Another lump of target-arm patches. I still have some patches in my to-review queue, but this is a big enough set that I wanted to send it out. thanks -- PMM The following changes since commit 04bb7fe2bf55bdf66d5b7a5a719b40bbb4048178: Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180208' into staging (2018-02-08 17:41:15 +0000) are available in the Git repository at: git://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20180209 for you to fetch changes up to bbba7757bacc9f890a3f028d328b4b429dbe78ec: hw/core/generic-loader: Allow PC to be set on command line (2018-02-09 10:55:40 +0000) ---------------------------------------------------------------- target-arm queue: * Support M profile derived exceptions on exception entry and exit * Implement AArch64 v8.2 crypto insns (SHA-512, SHA-3, SM3, SM4) * Implement working i.MX6 SD controller * Various devices preparatory to i.MX7 support * Preparatory patches for SVE emulation * v8M: Fix bug in implementation of 'TT' insn * Give useful error if user tries to use userspace GICv3 with KVM ---------------------------------------------------------------- Andrey Smirnov (10): sdhci: Add i.MX specific subtype of SDHCI hw: i.MX: Convert i.MX6 to use TYPE_IMX_USDHC i.MX: Add code to emulate i.MX7 CCM, PMU and ANALOG IP blocks i.MX: Add code to emulate i.MX2 watchdog IP block i.MX: Add code to emulate i.MX7 SNVS IP-block i.MX: Add code to emulate GPCv2 IP block i.MX: Add i.MX7 GPT variant i.MX: Add implementation of i.MX7 GPR IP block usb: Add basic code to emulate Chipidea USB IP hw/arm: Move virt's PSCI DT fixup code to arm/boot.c Ard Biesheuvel (5): target/arm: implement SHA-512 instructions target/arm: implement SHA-3 instructions target/arm: implement SM3 instructions target/arm: implement SM4 instructions target/arm: enable user-mode SHA-3, SM3, SM4 and SHA-512 instruction support Christoffer Dall (1): target/arm/kvm: gic: Prevent creating userspace GICv3 with KVM Peter Maydell (9): target/arm: Add armv7m_nvic_set_pending_derived() target/arm: Split "get pending exception info" from "acknowledge it" target/arm: Add ignore_stackfaults argument to v7m_exception_taken() target/arm: Make v7M exception entry stack push check MPU target/arm: Make v7m_push_callee_stack() honour MPU target/arm: Make exception vector loads honour the SAU target/arm: Handle exceptions during exception stack pop target/arm/translate.c: Fix missing 'break' for TT insns hw/core/generic-loader: Allow PC to be set on command line Richard Henderson (5): target/arm: Expand vector registers for SVE target/arm: Add predicate registers for SVE target/arm: Add SVE to migration state target/arm: Add ZCR_ELx target/arm: Add SVE state to TB->FLAGS hw/intc/Makefile.objs | 2 +- hw/misc/Makefile.objs | 4 + hw/usb/Makefile.objs | 1 + hw/sd/sdhci-internal.h | 23 ++ include/hw/intc/imx_gpcv2.h | 22 ++ include/hw/misc/imx2_wdt.h | 33 +++ include/hw/misc/imx7_ccm.h | 139 +++++++++++ include/hw/misc/imx7_gpr.h | 28 +++ include/hw/misc/imx7_snvs.h | 35 +++ include/hw/sd/sdhci.h | 13 ++ include/hw/timer/imx_gpt.h | 1 + include/hw/usb/chipidea.h | 16 ++ target/arm/cpu.h | 120 ++++++++-- target/arm/helper.h | 12 + target/arm/kvm_arm.h | 4 + target/arm/translate.h | 2 + hw/arm/boot.c | 65 ++++++ hw/arm/fsl-imx6.c | 2 +- hw/arm/virt.c | 61 ----- hw/core/generic-loader.c | 2 +- hw/intc/armv7m_nvic.c | 98 +++++++- hw/intc/imx_gpcv2.c | 125 ++++++++++ hw/misc/imx2_wdt.c | 89 +++++++ hw/misc/imx7_ccm.c | 277 ++++++++++++++++++++++ hw/misc/imx7_gpr.c | 124 ++++++++++ hw/misc/imx7_snvs.c | 83 +++++++ hw/sd/sdhci.c | 230 ++++++++++++++++++- hw/timer/imx_gpt.c | 25 ++ hw/usb/chipidea.c | 176 ++++++++++++++ linux-user/elfload.c | 19 ++ target/arm/cpu64.c | 4 + target/arm/crypto_helper.c | 277 +++++++++++++++++++++- target/arm/helper.c | 548 +++++++++++++++++++++++++++++++++++++------- target/arm/machine.c | 88 ++++++- target/arm/translate-a64.c | 350 +++++++++++++++++++++++++++- target/arm/translate.c | 8 +- hw/intc/trace-events | 5 +- hw/misc/trace-events | 4 + 38 files changed, 2928 insertions(+), 187 deletions(-) create mode 100644 include/hw/intc/imx_gpcv2.h create mode 100644 include/hw/misc/imx2_wdt.h create mode 100644 include/hw/misc/imx7_ccm.h create mode 100644 include/hw/misc/imx7_gpr.h create mode 100644 include/hw/misc/imx7_snvs.h create mode 100644 include/hw/usb/chipidea.h create mode 100644 hw/intc/imx_gpcv2.c create mode 100644 hw/misc/imx2_wdt.c create mode 100644 hw/misc/imx7_ccm.c create mode 100644 hw/misc/imx7_gpr.c create mode 100644 hw/misc/imx7_snvs.c create mode 100644 hw/usb/chipidea.c In order to support derived exceptions (exceptions generated in the course of trying to take an exception), we need to be able to handle prioritizing whether to take the original exception or the derived exception. We do this by introducing a new function armv7m_nvic_set_pending_derived() which the exception-taking code in helper.c will call when a derived exception occurs. Derived exceptions are dealt with mostly like normal pending exceptions, so we share the implementation with the armv7m_nvic_set_pending() function. Note that the way we structure this is significantly different from the v8M Arm ARM pseudocode: that does all the prioritization logic in the DerivedLateArrival() function, whereas we choose to let the existing "identify highest priority exception" logic do the prioritization for us. The effect is the same, though. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 1517324542-6607-2-git-send-email-peter.maydell@linaro.org --- target/arm/cpu.h | 13 ++++++++++ hw/intc/armv7m_nvic.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++-- hw/intc/trace-events | 2 +- 3 files changed, 80 insertions(+), 3 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ static inline bool armv7m_nvic_can_take_pending_exception(void *opaque) * of architecturally banked exceptions. */ void armv7m_nvic_set_pending(void *opaque, int irq, bool secure); +/** + * armv7m_nvic_set_pending_derived: mark this derived exception as pending + * @opaque: the NVIC + * @irq: the exception number to mark pending + * @secure: false for non-banked exceptions or for the nonsecure + * version of a banked exception, true for the secure version of a banked + * exception. + * + * Similar to armv7m_nvic_set_pending(), but specifically for derived + * exceptions (exceptions generated in the course of trying to take + * a different exception). + */ +void armv7m_nvic_set_pending_derived(void *opaque, int irq, bool secure); /** * armv7m_nvic_acknowledge_irq: make highest priority pending exception active * @opaque: the NVIC diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static void armv7m_nvic_clear_pending(void *opaque, int irq, bool secure) } } -void armv7m_nvic_set_pending(void *opaque, int irq, bool secure) +static void do_armv7m_nvic_set_pending(void *opaque, int irq, bool secure, + bool derived) { + /* Pend an exception, including possibly escalating it to HardFault. + * + * This function handles both "normal" pending of interrupts and + * exceptions, and also derived exceptions (ones which occur as + * a result of trying to take some other exception). + * + * If derived == true, the caller guarantees that we are part way through + * trying to take an exception (but have not yet called + * armv7m_nvic_acknowledge_irq() to make it active), and so: + * - s->vectpending is the "original exception" we were trying to take + * - irq is the "derived exception" + * - nvic_exec_prio(s) gives the priority before exception entry + * Here we handle the prioritization logic which the pseudocode puts + * in the DerivedLateArrival() function. + */ + NVICState *s = (NVICState *)opaque; bool banked = exc_is_banked(irq); VecInfo *vec; @@ -XXX,XX +XXX,XX @@ void armv7m_nvic_set_pending(void *opaque, int irq, bool secure) vec = (banked && secure) ? &s->sec_vectors[irq] : &s->vectors[irq]; - trace_nvic_set_pending(irq, secure, vec->enabled, vec->prio); + trace_nvic_set_pending(irq, secure, derived, vec->enabled, vec->prio); + + if (derived) { + /* Derived exceptions are always synchronous. */ + assert(irq >= ARMV7M_EXCP_HARD && irq < ARMV7M_EXCP_PENDSV); + + if (irq == ARMV7M_EXCP_DEBUG && + exc_group_prio(s, vec->prio, secure) >= nvic_exec_prio(s)) { + /* DebugMonitorFault, but its priority is lower than the + * preempted exception priority: just ignore it. + */ + return; + } + + if (irq == ARMV7M_EXCP_HARD && vec->prio >= s->vectpending_prio) { + /* If this is a terminal exception (one which means we cannot + * take the original exception, like a failure to read its + * vector table entry), then we must take the derived exception. + * If the derived exception can't take priority over the + * original exception, then we go into Lockup. + * + * For QEMU, we rely on the fact that a derived exception is + * terminal if and only if it's reported to us as HardFault, + * which saves having to have an extra argument is_terminal + * that we'd only use in one place. + */ + cpu_abort(&s->cpu->parent_obj, + "Lockup: can't take terminal derived exception " + "(original exception priority %d)\n", + s->vectpending_prio); + } + /* We now continue with the same code as for a normal pending + * exception, which will cause us to pend the derived exception. + * We'll then take either the original or the derived exception + * based on which is higher priority by the usual mechanism + * for selecting the highest priority pending interrupt. + */ + } if (irq >= ARMV7M_EXCP_HARD && irq < ARMV7M_EXCP_PENDSV) { /* If a synchronous exception is pending then it may be @@ -XXX,XX +XXX,XX @@ void armv7m_nvic_set_pending(void *opaque, int irq, bool secure) } } +void armv7m_nvic_set_pending(void *opaque, int irq, bool secure) +{ + do_armv7m_nvic_set_pending(opaque, irq, secure, false); +} + +void armv7m_nvic_set_pending_derived(void *opaque, int irq, bool secure) +{ + do_armv7m_nvic_set_pending(opaque, irq, secure, true); +} + /* Make pending IRQ active. */ bool armv7m_nvic_acknowledge_irq(void *opaque) { diff --git a/hw/intc/trace-events b/hw/intc/trace-events index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -XXX,XX +XXX,XX @@ nvic_set_prio(int irq, bool secure, uint8_t prio) "NVIC set irq %d secure-bank % nvic_irq_update(int vectpending, int pendprio, int exception_prio, int level) "NVIC vectpending %d pending prio %d exception_prio %d: setting irq line to %d" nvic_escalate_prio(int irq, int irqprio, int runprio) "NVIC escalating irq %d to HardFault: insufficient priority %d >= %d" nvic_escalate_disabled(int irq) "NVIC escalating irq %d to HardFault: disabled" -nvic_set_pending(int irq, bool secure, int en, int prio) "NVIC set pending irq %d secure-bank %d (enabled: %d priority %d)" +nvic_set_pending(int irq, bool secure, bool derived, int en, int prio) "NVIC set pending irq %d secure-bank %d derived %d (enabled: %d priority %d)" nvic_clear_pending(int irq, bool secure, int en, int prio) "NVIC clear pending irq %d secure-bank %d (enabled: %d priority %d)" nvic_set_pending_level(int irq) "NVIC set pending: irq %d higher prio than vectpending: setting irq line to 1" nvic_acknowledge_irq(int irq, int prio, bool targets_secure) "NVIC acknowledge IRQ: %d now active (prio %d targets_secure %d)" -- 2.16.1 Currently armv7m_nvic_acknowledge_irq() does three things: * make the current highest priority pending interrupt active * return a bool indicating whether that interrupt is targeting Secure or NonSecure state * implicitly tell the caller which is the highest priority pending interrupt by setting env->v7m.exception We need to split these jobs, because v7m_exception_taken() needs to know whether the pending interrupt targets Secure so it can choose to stack callee-saves registers or not, but it must not make the interrupt active until after it has done that stacking, in case the stacking causes a derived exception. Similarly, it needs to know the number of the pending interrupt so it can read the correct vector table entry before the interrupt is made active, because vector table reads might also cause a derived exception. Create a new armv7m_nvic_get_pending_irq_info() function which simply returns information about the highest priority pending interrupt, and use it to rearrange the v7m_exception_taken() code so we don't acknowledge the exception until we've done all the things which could possibly cause a derived exception. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 1517324542-6607-3-git-send-email-peter.maydell@linaro.org --- target/arm/cpu.h | 19 ++++++++++++++++--- hw/intc/armv7m_nvic.c | 30 +++++++++++++++++++++++------- target/arm/helper.c | 16 ++++++++++++---- hw/intc/trace-events | 3 ++- 4 files changed, 53 insertions(+), 15 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ void armv7m_nvic_set_pending(void *opaque, int irq, bool secure); * a different exception). */ void armv7m_nvic_set_pending_derived(void *opaque, int irq, bool secure); +/** + * armv7m_nvic_get_pending_irq_info: return highest priority pending + * exception, and whether it targets Secure state + * @opaque: the NVIC + * @pirq: set to pending exception number + * @ptargets_secure: set to whether pending exception targets Secure + * + * This function writes the number of the highest priority pending + * exception (the one which would be made active by + * armv7m_nvic_acknowledge_irq()) to @pirq, and sets @ptargets_secure + * to true if the current highest priority pending exception should + * be taken to Secure state, false for NS. + */ +void armv7m_nvic_get_pending_irq_info(void *opaque, int *pirq, + bool *ptargets_secure); /** * armv7m_nvic_acknowledge_irq: make highest priority pending exception active * @opaque: the NVIC @@ -XXX,XX +XXX,XX @@ void armv7m_nvic_set_pending_derived(void *opaque, int irq, bool secure); * Move the current highest priority pending exception from the pending * state to the active state, and update v7m.exception to indicate that * it is the exception currently being handled. - * - * Returns: true if exception should be taken to Secure state, false for NS */ -bool armv7m_nvic_acknowledge_irq(void *opaque); +void armv7m_nvic_acknowledge_irq(void *opaque); /** * armv7m_nvic_complete_irq: complete specified interrupt or exception * @opaque: the NVIC diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ void armv7m_nvic_set_pending_derived(void *opaque, int irq, bool secure) } /* Make pending IRQ active. */ -bool armv7m_nvic_acknowledge_irq(void *opaque) +void armv7m_nvic_acknowledge_irq(void *opaque) { NVICState *s = (NVICState *)opaque; CPUARMState *env = &s->cpu->env; const int pending = s->vectpending; const int running = nvic_exec_prio(s); VecInfo *vec; - bool targets_secure; assert(pending > ARMV7M_EXCP_RESET && pending < s->num_irq); if (s->vectpending_is_s_banked) { vec = &s->sec_vectors[pending]; - targets_secure = true; } else { vec = &s->vectors[pending]; - targets_secure = !exc_is_banked(s->vectpending) && - exc_targets_secure(s, s->vectpending); } assert(vec->enabled); @@ -XXX,XX +XXX,XX @@ bool armv7m_nvic_acknowledge_irq(void *opaque) assert(s->vectpending_prio < running); - trace_nvic_acknowledge_irq(pending, s->vectpending_prio, targets_secure); + trace_nvic_acknowledge_irq(pending, s->vectpending_prio); vec->active = 1; vec->pending = 0; @@ -XXX,XX +XXX,XX @@ bool armv7m_nvic_acknowledge_irq(void *opaque) write_v7m_exception(env, s->vectpending); nvic_irq_update(s); +} + +void armv7m_nvic_get_pending_irq_info(void *opaque, + int *pirq, bool *ptargets_secure) +{ + NVICState *s = (NVICState *)opaque; + const int pending = s->vectpending; + bool targets_secure; + + assert(pending > ARMV7M_EXCP_RESET && pending < s->num_irq); + + if (s->vectpending_is_s_banked) { + targets_secure = true; + } else { + targets_secure = !exc_is_banked(pending) && + exc_targets_secure(s, pending); + } + + trace_nvic_get_pending_irq_info(pending, targets_secure); - return targets_secure; + *ptargets_secure = targets_secure; + *pirq = pending; } int armv7m_nvic_complete_irq(void *opaque, int irq, bool secure) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ static uint32_t *get_v7m_sp_ptr(CPUARMState *env, bool secure, bool threadmode, } } -static uint32_t arm_v7m_load_vector(ARMCPU *cpu, bool targets_secure) +static uint32_t arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure) { CPUState *cs = CPU(cpu); CPUARMState *env = &cpu->env; MemTxResult result; - hwaddr vec = env->v7m.vecbase[targets_secure] + env->v7m.exception * 4; + hwaddr vec = env->v7m.vecbase[targets_secure] + exc * 4; uint32_t addr; addr = address_space_ldl(cs->as, vec, @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) CPUARMState *env = &cpu->env; uint32_t addr; bool targets_secure; + int exc; - targets_secure = armv7m_nvic_acknowledge_irq(env->nvic); + armv7m_nvic_get_pending_irq_info(env->nvic, &exc, &targets_secure); if (arm_feature(env, ARM_FEATURE_V8)) { if (arm_feature(env, ARM_FEATURE_M_SECURITY) && @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) } } + addr = arm_v7m_load_vector(cpu, exc, targets_secure); + + /* Now we've done everything that might cause a derived exception + * we can go ahead and activate whichever exception we're going to + * take (which might now be the derived exception). + */ + armv7m_nvic_acknowledge_irq(env->nvic); + /* Switch to target security state -- must do this before writing SPSEL */ switch_v7m_security_state(env, targets_secure); write_v7m_control_spsel(env, 0); @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) /* Clear IT bits */ env->condexec_bits = 0; env->regs[14] = lr; - addr = arm_v7m_load_vector(cpu, targets_secure); env->regs[15] = addr & 0xfffffffe; env->thumb = addr & 1; } diff --git a/hw/intc/trace-events b/hw/intc/trace-events index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -XXX,XX +XXX,XX @@ nvic_escalate_disabled(int irq) "NVIC escalating irq %d to HardFault: disabled" nvic_set_pending(int irq, bool secure, bool derived, int en, int prio) "NVIC set pending irq %d secure-bank %d derived %d (enabled: %d priority %d)" nvic_clear_pending(int irq, bool secure, int en, int prio) "NVIC clear pending irq %d secure-bank %d (enabled: %d priority %d)" nvic_set_pending_level(int irq) "NVIC set pending: irq %d higher prio than vectpending: setting irq line to 1" -nvic_acknowledge_irq(int irq, int prio, bool targets_secure) "NVIC acknowledge IRQ: %d now active (prio %d targets_secure %d)" +nvic_acknowledge_irq(int irq, int prio) "NVIC acknowledge IRQ: %d now active (prio %d)" +nvic_get_pending_irq_info(int irq, bool secure) "NVIC next IRQ %d: targets_secure: %d" nvic_complete_irq(int irq, bool secure) "NVIC complete IRQ %d (secure %d)" nvic_set_irq_level(int irq, int level) "NVIC external irq %d level set to %d" nvic_sysreg_read(uint64_t addr, uint32_t value, unsigned size) "NVIC sysreg read addr 0x%" PRIx64 " data 0x%" PRIx32 " size %u" -- 2.16.1 In the v8M architecture, if the process of taking an exception results in a further exception this is called a derived exception (for example, an MPU exception when writing the exception frame to memory). If the derived exception happens while pushing the initial stack frame, we must ignore any subsequent possible exception pushing the callee-saves registers. In preparation for making the stack writes check for exceptions, add a return value from v7m_push_stack() and a new parameter to v7m_exception_taken(), so that the former can tell the latter that it needs to ignore failures to write to the stack. We also plumb the argument through to v7m_push_callee_stack(), which is where the code to ignore the failures will be. (Note that the v8M ARM pseudocode structures this slightly differently: derived exceptions cause the attempt to process the original exception to be abandoned; then at the top level it calls DerivedLateArrival to prioritize the derived exception and call TakeException from there. We choose to let the NVIC do the prioritization and continue forward with a call to TakeException which will then take either the original or the derived exception. The effect is the same, but this structure works better for QEMU because we don't have a convenient top level place to do the abandon-and-retry logic.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 1517324542-6607-4-git-send-email-peter.maydell@linaro.org --- target/arm/helper.c | 35 +++++++++++++++++++++++------------ 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ static uint32_t arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure) return addr; } -static void v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain) +static void v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, + bool ignore_faults) { /* For v8M, push the callee-saves register part of the stack frame. * Compare the v8M pseudocode PushCalleeStack(). @@ -XXX,XX +XXX,XX @@ static void v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain) *frame_sp_p = frameptr; } -static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) +static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, + bool ignore_stackfaults) { /* Do the "take the exception" parts of exception entry, * but not the pushing of state to the stack. This is @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) */ if (lr & R_V7M_EXCRET_DCRS_MASK && !(dotailchain && (lr & R_V7M_EXCRET_ES_MASK))) { - v7m_push_callee_stack(cpu, lr, dotailchain); + v7m_push_callee_stack(cpu, lr, dotailchain, + ignore_stackfaults); } lr |= R_V7M_EXCRET_DCRS_MASK; } @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain) env->thumb = addr & 1; } -static void v7m_push_stack(ARMCPU *cpu) +static bool v7m_push_stack(ARMCPU *cpu) { /* Do the "set up stack frame" part of exception entry, * similar to pseudocode PushStack(). + * Return true if we generate a derived exception (and so + * should ignore further stack faults trying to process + * that derived exception.) */ CPUARMState *env = &cpu->env; uint32_t xpsr = xpsr_read(env); @@ -XXX,XX +XXX,XX @@ static void v7m_push_stack(ARMCPU *cpu) v7m_push(env, env->regs[2]); v7m_push(env, env->regs[1]); v7m_push(env, env->regs[0]); + + return false; } static void do_v7m_exception_exit(ARMCPU *cpu) @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) if (sfault) { env->v7m.sfsr |= R_V7M_SFSR_INVER_MASK; armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); - v7m_exception_taken(cpu, excret, true); + v7m_exception_taken(cpu, excret, true, false); qemu_log_mask(CPU_LOG_INT, "...taking SecureFault on existing " "stackframe: failed EXC_RETURN.ES validity check\n"); return; @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) */ env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); - v7m_exception_taken(cpu, excret, true); + v7m_exception_taken(cpu, excret, true, false); qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " "stackframe: failed exception return integrity check\n"); return; @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) /* Take a SecureFault on the current stack */ env->v7m.sfsr |= R_V7M_SFSR_INVIS_MASK; armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); - v7m_exception_taken(cpu, excret, true); + v7m_exception_taken(cpu, excret, true, false); qemu_log_mask(CPU_LOG_INT, "...taking SecureFault on existing " "stackframe: failed exception return integrity " "signature check\n"); @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; - v7m_exception_taken(cpu, excret, true); + v7m_exception_taken(cpu, excret, true, false); qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " "stackframe: failed exception return integrity " "check\n"); @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) /* Take an INVPC UsageFault by pushing the stack again; * we know we're v7M so this is never a Secure UsageFault. */ + bool ignore_stackfaults; + assert(!arm_feature(env, ARM_FEATURE_V8)); armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, false); env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVPC_MASK; - v7m_push_stack(cpu); - v7m_exception_taken(cpu, excret, false); + ignore_stackfaults = v7m_push_stack(cpu); + v7m_exception_taken(cpu, excret, false, ignore_stackfaults); qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on new stackframe: " "failed exception return integrity check\n"); return; @@ -XXX,XX +XXX,XX @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) ARMCPU *cpu = ARM_CPU(cs); CPUARMState *env = &cpu->env; uint32_t lr; + bool ignore_stackfaults; arm_log_exception(cs->exception_index); @@ -XXX,XX +XXX,XX @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) lr |= R_V7M_EXCRET_MODE_MASK; } - v7m_push_stack(cpu); - v7m_exception_taken(cpu, lr, false); + ignore_stackfaults = v7m_push_stack(cpu); + v7m_exception_taken(cpu, lr, false, ignore_stackfaults); qemu_log_mask(CPU_LOG_INT, "... as %d\n", env->v7m.exception); } -- 2.16.1 The memory writes done to push registers on the stack on exception entry in M profile CPUs are supposed to go via MPU permissions checks, which may cause us to take a derived exception instead of the original one of the MPU lookup fails. We were implementing these as always-succeeds direct writes to physical memory. Rewrite v7m_push_stack() to do the necessary checks. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 1517324542-6607-5-git-send-email-peter.maydell@linaro.org --- target/arm/helper.c | 103 ++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 87 insertions(+), 16 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, return target_el; } -static void v7m_push(CPUARMState *env, uint32_t val) +static bool v7m_stack_write(ARMCPU *cpu, uint32_t addr, uint32_t value, + ARMMMUIdx mmu_idx, bool ignfault) { - CPUState *cs = CPU(arm_env_get_cpu(env)); + CPUState *cs = CPU(cpu); + CPUARMState *env = &cpu->env; + MemTxAttrs attrs = {}; + MemTxResult txres; + target_ulong page_size; + hwaddr physaddr; + int prot; + ARMMMUFaultInfo fi; + bool secure = mmu_idx & ARM_MMU_IDX_M_S; + int exc; + bool exc_secure; - env->regs[13] -= 4; - stl_phys(cs->as, env->regs[13], val); + if (get_phys_addr(env, addr, MMU_DATA_STORE, mmu_idx, &physaddr, + &attrs, &prot, &page_size, &fi, NULL)) { + /* MPU/SAU lookup failed */ + if (fi.type == ARMFault_QEMU_SFault) { + qemu_log_mask(CPU_LOG_INT, + "...SecureFault with SFSR.AUVIOL during stacking\n"); + env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK | R_V7M_SFSR_SFARVALID_MASK; + env->v7m.sfar = addr; + exc = ARMV7M_EXCP_SECURE; + exc_secure = false; + } else { + qemu_log_mask(CPU_LOG_INT, "...MemManageFault with CFSR.MSTKERR\n"); + env->v7m.cfsr[secure] |= R_V7M_CFSR_MSTKERR_MASK; + exc = ARMV7M_EXCP_MEM; + exc_secure = secure; + } + goto pend_fault; + } + address_space_stl_le(arm_addressspace(cs, attrs), physaddr, value, + attrs, &txres); + if (txres != MEMTX_OK) { + /* BusFault trying to write the data */ + qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.STKERR\n"); + env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_STKERR_MASK; + exc = ARMV7M_EXCP_BUS; + exc_secure = false; + goto pend_fault; + } + return true; + +pend_fault: + /* By pending the exception at this point we are making + * the IMPDEF choice "overridden exceptions pended" (see the + * MergeExcInfo() pseudocode). The other choice would be to not + * pend them now and then make a choice about which to throw away + * later if we have two derived exceptions. + * The only case when we must not pend the exception but instead + * throw it away is if we are doing the push of the callee registers + * and we've already generated a derived exception. Even in this + * case we will still update the fault status registers. + */ + if (!ignfault) { + armv7m_nvic_set_pending_derived(env->nvic, exc, exc_secure); + } + return false; } /* Return true if we're using the process stack pointer (not the MSP) */ @@ -XXX,XX +XXX,XX @@ static bool v7m_push_stack(ARMCPU *cpu) * should ignore further stack faults trying to process * that derived exception.) */ + bool stacked_ok; CPUARMState *env = &cpu->env; uint32_t xpsr = xpsr_read(env); + uint32_t frameptr = env->regs[13]; + ARMMMUIdx mmu_idx = core_to_arm_mmu_idx(env, cpu_mmu_index(env, false)); /* Align stack pointer if the guest wants that */ - if ((env->regs[13] & 4) && + if ((frameptr & 4) && (env->v7m.ccr[env->v7m.secure] & R_V7M_CCR_STKALIGN_MASK)) { - env->regs[13] -= 4; + frameptr -= 4; xpsr |= XPSR_SPREALIGN; } - /* Switch to the handler mode. */ - v7m_push(env, xpsr); - v7m_push(env, env->regs[15]); - v7m_push(env, env->regs[14]); - v7m_push(env, env->regs[12]); - v7m_push(env, env->regs[3]); - v7m_push(env, env->regs[2]); - v7m_push(env, env->regs[1]); - v7m_push(env, env->regs[0]); - return false; + frameptr -= 0x20; + + /* Write as much of the stack frame as we can. If we fail a stack + * write this will result in a derived exception being pended + * (which may be taken in preference to the one we started with + * if it has higher priority). + */ + stacked_ok = + v7m_stack_write(cpu, frameptr, env->regs[0], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 4, env->regs[1], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 8, env->regs[2], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 12, env->regs[3], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 16, env->regs[12], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 20, env->regs[14], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 24, env->regs[15], mmu_idx, false) && + v7m_stack_write(cpu, frameptr + 28, xpsr, mmu_idx, false); + + /* Update SP regardless of whether any of the stack accesses failed. + * When we implement v8M stack limit checking then this attempt to + * update SP might also fail and result in a derived exception. + */ + env->regs[13] = frameptr; + + return !stacked_ok; } static void do_v7m_exception_exit(ARMCPU *cpu) -- 2.16.1 Make v7m_push_callee_stack() honour the MPU by using the new v7m_stack_write() function. We return a flag to indicate whether the pushes failed, which we can then use in v7m_exception_taken() to cause us to handle the derived exception correctly. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 1517324542-6607-6-git-send-email-peter.maydell@linaro.org --- target/arm/helper.c | 64 ++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 49 insertions(+), 15 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ static uint32_t arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure) return addr; } -static void v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, +static bool v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, bool ignore_faults) { /* For v8M, push the callee-saves register part of the stack frame. @@ -XXX,XX +XXX,XX @@ static void v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, * In the tailchaining case this may not be the current stack. */ CPUARMState *env = &cpu->env; - CPUState *cs = CPU(cpu); uint32_t *frame_sp_p; uint32_t frameptr; + ARMMMUIdx mmu_idx; + bool stacked_ok; if (dotailchain) { - frame_sp_p = get_v7m_sp_ptr(env, true, - lr & R_V7M_EXCRET_MODE_MASK, + bool mode = lr & R_V7M_EXCRET_MODE_MASK; + bool priv = !(env->v7m.control[M_REG_S] & R_V7M_CONTROL_NPRIV_MASK) || + !mode; + + mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, M_REG_S, priv); + frame_sp_p = get_v7m_sp_ptr(env, M_REG_S, mode, lr & R_V7M_EXCRET_SPSEL_MASK); } else { + mmu_idx = core_to_arm_mmu_idx(env, cpu_mmu_index(env, false)); frame_sp_p = &env->regs[13]; } frameptr = *frame_sp_p - 0x28; - stl_phys(cs->as, frameptr, 0xfefa125b); - stl_phys(cs->as, frameptr + 0x8, env->regs[4]); - stl_phys(cs->as, frameptr + 0xc, env->regs[5]); - stl_phys(cs->as, frameptr + 0x10, env->regs[6]); - stl_phys(cs->as, frameptr + 0x14, env->regs[7]); - stl_phys(cs->as, frameptr + 0x18, env->regs[8]); - stl_phys(cs->as, frameptr + 0x1c, env->regs[9]); - stl_phys(cs->as, frameptr + 0x20, env->regs[10]); - stl_phys(cs->as, frameptr + 0x24, env->regs[11]); + /* Write as much of the stack frame as we can. A write failure may + * cause us to pend a derived exception. + */ + stacked_ok = + v7m_stack_write(cpu, frameptr, 0xfefa125b, mmu_idx, ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x8, env->regs[4], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0xc, env->regs[5], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x10, env->regs[6], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x14, env->regs[7], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x18, env->regs[8], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x1c, env->regs[9], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x20, env->regs[10], mmu_idx, + ignore_faults) && + v7m_stack_write(cpu, frameptr + 0x24, env->regs[11], mmu_idx, + ignore_faults); + /* Update SP regardless of whether any of the stack accesses failed. + * When we implement v8M stack limit checking then this attempt to + * update SP might also fail and result in a derived exception. + */ *frame_sp_p = frameptr; + + return !stacked_ok; } static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, uint32_t addr; bool targets_secure; int exc; + bool push_failed = false; armv7m_nvic_get_pending_irq_info(env->nvic, &exc, &targets_secure); @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, */ if (lr & R_V7M_EXCRET_DCRS_MASK && !(dotailchain && (lr & R_V7M_EXCRET_ES_MASK))) { - v7m_push_callee_stack(cpu, lr, dotailchain, - ignore_stackfaults); + push_failed = v7m_push_callee_stack(cpu, lr, dotailchain, + ignore_stackfaults); } lr |= R_V7M_EXCRET_DCRS_MASK; } @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, } } + if (push_failed && !ignore_stackfaults) { + /* Derived exception on callee-saves register stacking: + * we might now want to take a different exception which + * targets a different security state, so try again from the top. + */ + v7m_exception_taken(cpu, lr, true, true); + return; + } + addr = arm_v7m_load_vector(cpu, exc, targets_secure); /* Now we've done everything that might cause a derived exception -- 2.16.1 Make the load of the exception vector from the vector table honour the SAU and any bus error on the load (possibly provoking a derived exception), rather than simply aborting if the load fails. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 1517324542-6607-7-git-send-email-peter.maydell@linaro.org --- target/arm/helper.c | 71 +++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 55 insertions(+), 16 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ static uint32_t *get_v7m_sp_ptr(CPUARMState *env, bool secure, bool threadmode, } } -static uint32_t arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure) +static bool arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure, + uint32_t *pvec) { CPUState *cs = CPU(cpu); CPUARMState *env = &cpu->env; MemTxResult result; - hwaddr vec = env->v7m.vecbase[targets_secure] + exc * 4; - uint32_t addr; + uint32_t addr = env->v7m.vecbase[targets_secure] + exc * 4; + uint32_t vector_entry; + MemTxAttrs attrs = {}; + ARMMMUIdx mmu_idx; + bool exc_secure; + + mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, targets_secure, true); - addr = address_space_ldl(cs->as, vec, - MEMTXATTRS_UNSPECIFIED, &result); + /* We don't do a get_phys_addr() here because the rules for vector + * loads are special: they always use the default memory map, and + * the default memory map permits reads from all addresses. + * Since there's no easy way to pass through to pmsav8_mpu_lookup() + * that we want this special case which would always say "yes", + * we just do the SAU lookup here followed by a direct physical load. + */ + attrs.secure = targets_secure; + attrs.user = false; + + if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { + V8M_SAttributes sattrs = {}; + + v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, &sattrs); + if (sattrs.ns) { + attrs.secure = false; + } else if (!targets_secure) { + /* NS access to S memory */ + goto load_fail; + } + } + + vector_entry = address_space_ldl(arm_addressspace(cs, attrs), addr, + attrs, &result); if (result != MEMTX_OK) { - /* Architecturally this should cause a HardFault setting HSFR.VECTTBL, - * which would then be immediately followed by our failing to load - * the entry vector for that HardFault, which is a Lockup case. - * Since we don't model Lockup, we just report this guest error - * via cpu_abort(). - */ - cpu_abort(cs, "Failed to read from %s exception vector table " - "entry %08x\n", targets_secure ? "secure" : "nonsecure", - (unsigned)vec); + goto load_fail; } - return addr; + *pvec = vector_entry; + return true; + +load_fail: + /* All vector table fetch fails are reported as HardFault, with + * HFSR.VECTTBL and .FORCED set. (FORCED is set because + * technically the underlying exception is a MemManage or BusFault + * that is escalated to HardFault.) This is a terminal exception, + * so we will either take the HardFault immediately or else enter + * lockup (the latter case is handled in armv7m_nvic_set_pending_derived()). + */ + exc_secure = targets_secure || + !(cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK); + env->v7m.hfsr |= R_V7M_HFSR_VECTTBL_MASK | R_V7M_HFSR_FORCED_MASK; + armv7m_nvic_set_pending_derived(env->nvic, ARMV7M_EXCP_HARD, exc_secure); + return false; } static bool v7m_push_callee_stack(ARMCPU *cpu, uint32_t lr, bool dotailchain, @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, return; } - addr = arm_v7m_load_vector(cpu, exc, targets_secure); + if (!arm_v7m_load_vector(cpu, exc, targets_secure, &addr)) { + /* Vector load failed: derived exception */ + v7m_exception_taken(cpu, lr, true, true); + return; + } /* Now we've done everything that might cause a derived exception * we can go ahead and activate whichever exception we're going to -- 2.16.1 Handle possible MPU faults, SAU faults or bus errors when popping register state off the stack during exception return. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 1517324542-6607-8-git-send-email-peter.maydell@linaro.org --- target/arm/helper.c | 115 ++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 94 insertions(+), 21 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ pend_fault: return false; } +static bool v7m_stack_read(ARMCPU *cpu, uint32_t *dest, uint32_t addr, + ARMMMUIdx mmu_idx) +{ + CPUState *cs = CPU(cpu); + CPUARMState *env = &cpu->env; + MemTxAttrs attrs = {}; + MemTxResult txres; + target_ulong page_size; + hwaddr physaddr; + int prot; + ARMMMUFaultInfo fi; + bool secure = mmu_idx & ARM_MMU_IDX_M_S; + int exc; + bool exc_secure; + uint32_t value; + + if (get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &physaddr, + &attrs, &prot, &page_size, &fi, NULL)) { + /* MPU/SAU lookup failed */ + if (fi.type == ARMFault_QEMU_SFault) { + qemu_log_mask(CPU_LOG_INT, + "...SecureFault with SFSR.AUVIOL during unstack\n"); + env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK | R_V7M_SFSR_SFARVALID_MASK; + env->v7m.sfar = addr; + exc = ARMV7M_EXCP_SECURE; + exc_secure = false; + } else { + qemu_log_mask(CPU_LOG_INT, + "...MemManageFault with CFSR.MUNSTKERR\n"); + env->v7m.cfsr[secure] |= R_V7M_CFSR_MUNSTKERR_MASK; + exc = ARMV7M_EXCP_MEM; + exc_secure = secure; + } + goto pend_fault; + } + + value = address_space_ldl(arm_addressspace(cs, attrs), physaddr, + attrs, &txres); + if (txres != MEMTX_OK) { + /* BusFault trying to read the data */ + qemu_log_mask(CPU_LOG_INT, "...BusFault with BFSR.UNSTKERR\n"); + env->v7m.cfsr[M_REG_NS] |= R_V7M_CFSR_UNSTKERR_MASK; + exc = ARMV7M_EXCP_BUS; + exc_secure = false; + goto pend_fault; + } + + *dest = value; + return true; + +pend_fault: + /* By pending the exception at this point we are making + * the IMPDEF choice "overridden exceptions pended" (see the + * MergeExcInfo() pseudocode). The other choice would be to not + * pend them now and then make a choice about which to throw away + * later if we have two derived exceptions. + */ + armv7m_nvic_set_pending(env->nvic, exc, exc_secure); + return false; +} + /* Return true if we're using the process stack pointer (not the MSP) */ static bool v7m_using_psp(CPUARMState *env) { @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) !return_to_handler, return_to_sp_process); uint32_t frameptr = *frame_sp_p; + bool pop_ok = true; + ARMMMUIdx mmu_idx; + + mmu_idx = arm_v7m_mmu_idx_for_secstate_and_priv(env, return_to_secure, + !return_to_handler); if (!QEMU_IS_ALIGNED(frameptr, 8) && arm_feature(env, ARM_FEATURE_V8)) { @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) return; } - env->regs[4] = ldl_phys(cs->as, frameptr + 0x8); - env->regs[5] = ldl_phys(cs->as, frameptr + 0xc); - env->regs[6] = ldl_phys(cs->as, frameptr + 0x10); - env->regs[7] = ldl_phys(cs->as, frameptr + 0x14); - env->regs[8] = ldl_phys(cs->as, frameptr + 0x18); - env->regs[9] = ldl_phys(cs->as, frameptr + 0x1c); - env->regs[10] = ldl_phys(cs->as, frameptr + 0x20); - env->regs[11] = ldl_phys(cs->as, frameptr + 0x24); + pop_ok = + v7m_stack_read(cpu, &env->regs[4], frameptr + 0x8, mmu_idx) && + v7m_stack_read(cpu, &env->regs[4], frameptr + 0x8, mmu_idx) && + v7m_stack_read(cpu, &env->regs[5], frameptr + 0xc, mmu_idx) && + v7m_stack_read(cpu, &env->regs[6], frameptr + 0x10, mmu_idx) && + v7m_stack_read(cpu, &env->regs[7], frameptr + 0x14, mmu_idx) && + v7m_stack_read(cpu, &env->regs[8], frameptr + 0x18, mmu_idx) && + v7m_stack_read(cpu, &env->regs[9], frameptr + 0x1c, mmu_idx) && + v7m_stack_read(cpu, &env->regs[10], frameptr + 0x20, mmu_idx) && + v7m_stack_read(cpu, &env->regs[11], frameptr + 0x24, mmu_idx); frameptr += 0x28; } - /* Pop registers. TODO: make these accesses use the correct - * attributes and address space (S/NS, priv/unpriv) and handle - * memory transaction failures. - */ - env->regs[0] = ldl_phys(cs->as, frameptr); - env->regs[1] = ldl_phys(cs->as, frameptr + 0x4); - env->regs[2] = ldl_phys(cs->as, frameptr + 0x8); - env->regs[3] = ldl_phys(cs->as, frameptr + 0xc); - env->regs[12] = ldl_phys(cs->as, frameptr + 0x10); - env->regs[14] = ldl_phys(cs->as, frameptr + 0x14); - env->regs[15] = ldl_phys(cs->as, frameptr + 0x18); + /* Pop registers */ + pop_ok = pop_ok && + v7m_stack_read(cpu, &env->regs[0], frameptr, mmu_idx) && + v7m_stack_read(cpu, &env->regs[1], frameptr + 0x4, mmu_idx) && + v7m_stack_read(cpu, &env->regs[2], frameptr + 0x8, mmu_idx) && + v7m_stack_read(cpu, &env->regs[3], frameptr + 0xc, mmu_idx) && + v7m_stack_read(cpu, &env->regs[12], frameptr + 0x10, mmu_idx) && + v7m_stack_read(cpu, &env->regs[14], frameptr + 0x14, mmu_idx) && + v7m_stack_read(cpu, &env->regs[15], frameptr + 0x18, mmu_idx) && + v7m_stack_read(cpu, &xpsr, frameptr + 0x1c, mmu_idx); + + if (!pop_ok) { + /* v7m_stack_read() pended a fault, so take it (as a tail + * chained exception on the same stack frame) + */ + v7m_exception_taken(cpu, excret, true, false); + return; + } /* Returning from an exception with a PC with bit 0 set is defined * behaviour on v8M (bit 0 is ignored), but for v7M it was specified @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) } } - xpsr = ldl_phys(cs->as, frameptr + 0x1c); - if (arm_feature(env, ARM_FEATURE_V8)) { /* For v8M we have to check whether the xPSR exception field * matches the EXCRET value for return to handler/thread -- 2.16.1 From: Ard Biesheuvel <ard.biesheuvel@linaro.org> This implements emulation of the new SHA-512 instructions that have been added as an optional extensions to the ARMv8 Crypto Extensions in ARM v8.2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 20180207111729.15737-2-ard.biesheuvel@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 1 + target/arm/helper.h | 5 +++ target/arm/crypto_helper.c | 90 ++++++++++++++++++++++++++++++++++++- target/arm/translate-a64.c | 110 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 205 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ enum arm_features { ARM_FEATURE_M_SECURITY, /* M profile Security Extension */ ARM_FEATURE_JAZELLE, /* has (trivial) Jazelle implementation */ ARM_FEATURE_SVE, /* has Scalable Vector Extension */ + ARM_FEATURE_V8_SHA512, /* implements SHA512 part of v8 Crypto Extensions */ }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_3(crypto_sha256h2, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) DEF_HELPER_FLAGS_2(crypto_sha256su0, TCG_CALL_NO_RWG, void, ptr, ptr) DEF_HELPER_FLAGS_3(crypto_sha256su1, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_3(crypto_sha512h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_3(crypto_sha512h2, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_2(crypto_sha512su0, TCG_CALL_NO_RWG, void, ptr, ptr) +DEF_HELPER_FLAGS_3(crypto_sha512su1, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) + DEF_HELPER_FLAGS_3(crc32, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_FLAGS_3(crc32c, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_2(dc_zva, void, env, i64) diff --git a/target/arm/crypto_helper.c b/target/arm/crypto_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/crypto_helper.c +++ b/target/arm/crypto_helper.c @@ -XXX,XX +XXX,XX @@ /* * crypto_helper.c - emulate v8 Crypto Extensions instructions * - * Copyright (C) 2013 - 2014 Linaro Ltd <ard.biesheuvel@linaro.org> + * Copyright (C) 2013 - 2018 Linaro Ltd <ard.biesheuvel@linaro.org> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -XXX,XX +XXX,XX @@ void HELPER(crypto_sha256su1)(void *vd, void *vn, void *vm) rd[0] = d.l[0]; rd[1] = d.l[1]; } + +/* + * The SHA-512 logical functions (same as above but using 64-bit operands) + */ + +static uint64_t cho512(uint64_t x, uint64_t y, uint64_t z) +{ + return (x & (y ^ z)) ^ z; +} + +static uint64_t maj512(uint64_t x, uint64_t y, uint64_t z) +{ + return (x & y) | ((x | y) & z); +} + +static uint64_t S0_512(uint64_t x) +{ + return ror64(x, 28) ^ ror64(x, 34) ^ ror64(x, 39); +} + +static uint64_t S1_512(uint64_t x) +{ + return ror64(x, 14) ^ ror64(x, 18) ^ ror64(x, 41); +} + +static uint64_t s0_512(uint64_t x) +{ + return ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7); +} + +static uint64_t s1_512(uint64_t x) +{ + return ror64(x, 19) ^ ror64(x, 61) ^ (x >> 6); +} + +void HELPER(crypto_sha512h)(void *vd, void *vn, void *vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + uint64_t d0 = rd[0]; + uint64_t d1 = rd[1]; + + d1 += S1_512(rm[1]) + cho512(rm[1], rn[0], rn[1]); + d0 += S1_512(d1 + rm[0]) + cho512(d1 + rm[0], rm[1], rn[0]); + + rd[0] = d0; + rd[1] = d1; +} + +void HELPER(crypto_sha512h2)(void *vd, void *vn, void *vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + uint64_t d0 = rd[0]; + uint64_t d1 = rd[1]; + + d1 += S0_512(rm[0]) + maj512(rn[0], rm[1], rm[0]); + d0 += S0_512(d1) + maj512(d1, rm[0], rm[1]); + + rd[0] = d0; + rd[1] = d1; +} + +void HELPER(crypto_sha512su0)(void *vd, void *vn) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t d0 = rd[0]; + uint64_t d1 = rd[1]; + + d0 += s0_512(rd[1]); + d1 += s0_512(rn[0]); + + rd[0] = d0; + rd[1] = d1; +} + +void HELPER(crypto_sha512su1)(void *vd, void *vn, void *vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + + rd[0] += s1_512(rn[0]) + rm[0]; + rd[1] += s1_512(rn[1]) + rm[1]; +} diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_crypto_two_reg_sha(DisasContext *s, uint32_t insn) tcg_temp_free_ptr(tcg_rn_ptr); } +/* Crypto three-reg SHA512 + * 31 21 20 16 15 14 13 12 11 10 9 5 4 0 + * +-----------------------+------+---+---+-----+--------+------+------+ + * | 1 1 0 0 1 1 1 0 0 1 1 | Rm | 1 | O | 0 0 | opcode | Rn | Rd | + * +-----------------------+------+---+---+-----+--------+------+------+ + */ +static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn) +{ + int opcode = extract32(insn, 10, 2); + int o = extract32(insn, 14, 1); + int rm = extract32(insn, 16, 5); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + int feature; + CryptoThreeOpFn *genfn; + + if (o == 0) { + switch (opcode) { + case 0: /* SHA512H */ + feature = ARM_FEATURE_V8_SHA512; + genfn = gen_helper_crypto_sha512h; + break; + case 1: /* SHA512H2 */ + feature = ARM_FEATURE_V8_SHA512; + genfn = gen_helper_crypto_sha512h2; + break; + case 2: /* SHA512SU1 */ + feature = ARM_FEATURE_V8_SHA512; + genfn = gen_helper_crypto_sha512su1; + break; + default: + unallocated_encoding(s); + return; + } + } else { + unallocated_encoding(s); + return; + } + + if (!arm_dc_feature(s, feature)) { + unallocated_encoding(s); + return; + } + + if (!fp_access_check(s)) { + return; + } + + if (genfn) { + TCGv_ptr tcg_rd_ptr, tcg_rn_ptr, tcg_rm_ptr; + + tcg_rd_ptr = vec_full_reg_ptr(s, rd); + tcg_rn_ptr = vec_full_reg_ptr(s, rn); + tcg_rm_ptr = vec_full_reg_ptr(s, rm); + + genfn(tcg_rd_ptr, tcg_rn_ptr, tcg_rm_ptr); + + tcg_temp_free_ptr(tcg_rd_ptr); + tcg_temp_free_ptr(tcg_rn_ptr); + tcg_temp_free_ptr(tcg_rm_ptr); + } else { + g_assert_not_reached(); + } +} + +/* Crypto two-reg SHA512 + * 31 12 11 10 9 5 4 0 + * +-----------------------------------------+--------+------+------+ + * | 1 1 0 0 1 1 1 0 1 1 0 0 0 0 0 0 1 0 0 0 | opcode | Rn | Rd | + * +-----------------------------------------+--------+------+------+ + */ +static void disas_crypto_two_reg_sha512(DisasContext *s, uint32_t insn) +{ + int opcode = extract32(insn, 10, 2); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + TCGv_ptr tcg_rd_ptr, tcg_rn_ptr; + int feature; + CryptoTwoOpFn *genfn; + + switch (opcode) { + case 0: /* SHA512SU0 */ + feature = ARM_FEATURE_V8_SHA512; + genfn = gen_helper_crypto_sha512su0; + break; + default: + unallocated_encoding(s); + return; + } + + if (!arm_dc_feature(s, feature)) { + unallocated_encoding(s); + return; + } + + if (!fp_access_check(s)) { + return; + } + + tcg_rd_ptr = vec_full_reg_ptr(s, rd); + tcg_rn_ptr = vec_full_reg_ptr(s, rn); + + genfn(tcg_rd_ptr, tcg_rn_ptr); + + tcg_temp_free_ptr(tcg_rd_ptr); + tcg_temp_free_ptr(tcg_rn_ptr); +} + /* C3.6 Data processing - SIMD, inc Crypto * * As the decode gets a little complex we are using a table based @@ -XXX,XX +XXX,XX @@ static const AArch64DecodeTable data_proc_simd[] = { { 0x4e280800, 0xff3e0c00, disas_crypto_aes }, { 0x5e000000, 0xff208c00, disas_crypto_three_reg_sha }, { 0x5e280800, 0xff3e0c00, disas_crypto_two_reg_sha }, + { 0xce608000, 0xffe0b000, disas_crypto_three_reg_sha512 }, + { 0xcec08000, 0xfffff000, disas_crypto_two_reg_sha512 }, { 0x00000000, 0x00000000, NULL } }; -- 2.16.1 From: Ard Biesheuvel <ard.biesheuvel@linaro.org> This implements emulation of the new SHA-3 instructions that have been added as an optional extensions to the ARMv8 Crypto Extensions in ARM v8.2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 20180207111729.15737-3-ard.biesheuvel@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 1 + target/arm/translate-a64.c | 148 +++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 145 insertions(+), 4 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ enum arm_features { ARM_FEATURE_JAZELLE, /* has (trivial) Jazelle implementation */ ARM_FEATURE_SVE, /* has Scalable Vector Extension */ ARM_FEATURE_V8_SHA512, /* implements SHA512 part of v8 Crypto Extensions */ + ARM_FEATURE_V8_SHA3, /* implements SHA3 part of v8 Crypto Extensions */ }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn) feature = ARM_FEATURE_V8_SHA512; genfn = gen_helper_crypto_sha512su1; break; - default: - unallocated_encoding(s); - return; + case 3: /* RAX1 */ + feature = ARM_FEATURE_V8_SHA3; + genfn = NULL; + break; } } else { unallocated_encoding(s); @@ -XXX,XX +XXX,XX @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn) tcg_temp_free_ptr(tcg_rn_ptr); tcg_temp_free_ptr(tcg_rm_ptr); } else { - g_assert_not_reached(); + TCGv_i64 tcg_op1, tcg_op2, tcg_res[2]; + int pass; + + tcg_op1 = tcg_temp_new_i64(); + tcg_op2 = tcg_temp_new_i64(); + tcg_res[0] = tcg_temp_new_i64(); + tcg_res[1] = tcg_temp_new_i64(); + + for (pass = 0; pass < 2; pass++) { + read_vec_element(s, tcg_op1, rn, pass, MO_64); + read_vec_element(s, tcg_op2, rm, pass, MO_64); + + tcg_gen_rotli_i64(tcg_res[pass], tcg_op2, 1); + tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1); + } + write_vec_element(s, tcg_res[0], rd, 0, MO_64); + write_vec_element(s, tcg_res[1], rd, 1, MO_64); + + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2); + tcg_temp_free_i64(tcg_res[0]); + tcg_temp_free_i64(tcg_res[1]); } } @@ -XXX,XX +XXX,XX @@ static void disas_crypto_two_reg_sha512(DisasContext *s, uint32_t insn) tcg_temp_free_ptr(tcg_rn_ptr); } +/* Crypto four-register + * 31 23 22 21 20 16 15 14 10 9 5 4 0 + * +-------------------+-----+------+---+------+------+------+ + * | 1 1 0 0 1 1 1 0 0 | Op0 | Rm | 0 | Ra | Rn | Rd | + * +-------------------+-----+------+---+------+------+------+ + */ +static void disas_crypto_four_reg(DisasContext *s, uint32_t insn) +{ + int op0 = extract32(insn, 21, 2); + int rm = extract32(insn, 16, 5); + int ra = extract32(insn, 10, 5); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + int feature; + + switch (op0) { + case 0: /* EOR3 */ + case 1: /* BCAX */ + feature = ARM_FEATURE_V8_SHA3; + break; + default: + unallocated_encoding(s); + return; + } + + if (!arm_dc_feature(s, feature)) { + unallocated_encoding(s); + return; + } + + if (!fp_access_check(s)) { + return; + } + + if (op0 < 2) { + TCGv_i64 tcg_op1, tcg_op2, tcg_op3, tcg_res[2]; + int pass; + + tcg_op1 = tcg_temp_new_i64(); + tcg_op2 = tcg_temp_new_i64(); + tcg_op3 = tcg_temp_new_i64(); + tcg_res[0] = tcg_temp_new_i64(); + tcg_res[1] = tcg_temp_new_i64(); + + for (pass = 0; pass < 2; pass++) { + read_vec_element(s, tcg_op1, rn, pass, MO_64); + read_vec_element(s, tcg_op2, rm, pass, MO_64); + read_vec_element(s, tcg_op3, ra, pass, MO_64); + + if (op0 == 0) { + /* EOR3 */ + tcg_gen_xor_i64(tcg_res[pass], tcg_op2, tcg_op3); + } else { + /* BCAX */ + tcg_gen_andc_i64(tcg_res[pass], tcg_op2, tcg_op3); + } + tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1); + } + write_vec_element(s, tcg_res[0], rd, 0, MO_64); + write_vec_element(s, tcg_res[1], rd, 1, MO_64); + + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2); + tcg_temp_free_i64(tcg_op3); + tcg_temp_free_i64(tcg_res[0]); + tcg_temp_free_i64(tcg_res[1]); + } else { + g_assert_not_reached(); + } +} + +/* Crypto XAR + * 31 21 20 16 15 10 9 5 4 0 + * +-----------------------+------+--------+------+------+ + * | 1 1 0 0 1 1 1 0 1 0 0 | Rm | imm6 | Rn | Rd | + * +-----------------------+------+--------+------+------+ + */ +static void disas_crypto_xar(DisasContext *s, uint32_t insn) +{ + int rm = extract32(insn, 16, 5); + int imm6 = extract32(insn, 10, 6); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + TCGv_i64 tcg_op1, tcg_op2, tcg_res[2]; + int pass; + + if (!arm_dc_feature(s, ARM_FEATURE_V8_SHA3)) { + unallocated_encoding(s); + return; + } + + if (!fp_access_check(s)) { + return; + } + + tcg_op1 = tcg_temp_new_i64(); + tcg_op2 = tcg_temp_new_i64(); + tcg_res[0] = tcg_temp_new_i64(); + tcg_res[1] = tcg_temp_new_i64(); + + for (pass = 0; pass < 2; pass++) { + read_vec_element(s, tcg_op1, rn, pass, MO_64); + read_vec_element(s, tcg_op2, rm, pass, MO_64); + + tcg_gen_xor_i64(tcg_res[pass], tcg_op1, tcg_op2); + tcg_gen_rotri_i64(tcg_res[pass], tcg_res[pass], imm6); + } + write_vec_element(s, tcg_res[0], rd, 0, MO_64); + write_vec_element(s, tcg_res[1], rd, 1, MO_64); + + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2); + tcg_temp_free_i64(tcg_res[0]); + tcg_temp_free_i64(tcg_res[1]); +} + /* C3.6 Data processing - SIMD, inc Crypto * * As the decode gets a little complex we are using a table based @@ -XXX,XX +XXX,XX @@ static const AArch64DecodeTable data_proc_simd[] = { { 0x5e280800, 0xff3e0c00, disas_crypto_two_reg_sha }, { 0xce608000, 0xffe0b000, disas_crypto_three_reg_sha512 }, { 0xcec08000, 0xfffff000, disas_crypto_two_reg_sha512 }, + { 0xce000000, 0xff808000, disas_crypto_four_reg }, + { 0xce800000, 0xffe00000, disas_crypto_xar }, { 0x00000000, 0x00000000, NULL } }; -- 2.16.1 From: Ard Biesheuvel <ard.biesheuvel@linaro.org> This implements emulation of the new SM3 instructions that have been added as an optional extension to the ARMv8 Crypto Extensions in ARM v8.2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 20180207111729.15737-4-ard.biesheuvel@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 1 + target/arm/helper.h | 4 ++ target/arm/crypto_helper.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++ target/arm/translate-a64.c | 88 ++++++++++++++++++++++++++++++++++++++++-- 4 files changed, 186 insertions(+), 3 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ enum arm_features { ARM_FEATURE_SVE, /* has Scalable Vector Extension */ ARM_FEATURE_V8_SHA512, /* implements SHA512 part of v8 Crypto Extensions */ ARM_FEATURE_V8_SHA3, /* implements SHA3 part of v8 Crypto Extensions */ + ARM_FEATURE_V8_SM3, /* implements SM3 part of v8 Crypto Extensions */ }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_3(crypto_sha512h2, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) DEF_HELPER_FLAGS_2(crypto_sha512su0, TCG_CALL_NO_RWG, void, ptr, ptr) DEF_HELPER_FLAGS_3(crypto_sha512su1, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_5(crypto_sm3tt, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32, i32) +DEF_HELPER_FLAGS_3(crypto_sm3partw1, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_3(crypto_sm3partw2, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) + DEF_HELPER_FLAGS_3(crc32, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_FLAGS_3(crc32c, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_2(dc_zva, void, env, i64) diff --git a/target/arm/crypto_helper.c b/target/arm/crypto_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/crypto_helper.c +++ b/target/arm/crypto_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(crypto_sha512su1)(void *vd, void *vn, void *vm) rd[0] += s1_512(rn[0]) + rm[0]; rd[1] += s1_512(rn[1]) + rm[1]; } + +void HELPER(crypto_sm3partw1)(void *vd, void *vn, void *vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + union CRYPTO_STATE d = { .l = { rd[0], rd[1] } }; + union CRYPTO_STATE n = { .l = { rn[0], rn[1] } }; + union CRYPTO_STATE m = { .l = { rm[0], rm[1] } }; + uint32_t t; + + t = CR_ST_WORD(d, 0) ^ CR_ST_WORD(n, 0) ^ ror32(CR_ST_WORD(m, 1), 17); + CR_ST_WORD(d, 0) = t ^ ror32(t, 17) ^ ror32(t, 9); + + t = CR_ST_WORD(d, 1) ^ CR_ST_WORD(n, 1) ^ ror32(CR_ST_WORD(m, 2), 17); + CR_ST_WORD(d, 1) = t ^ ror32(t, 17) ^ ror32(t, 9); + + t = CR_ST_WORD(d, 2) ^ CR_ST_WORD(n, 2) ^ ror32(CR_ST_WORD(m, 3), 17); + CR_ST_WORD(d, 2) = t ^ ror32(t, 17) ^ ror32(t, 9); + + t = CR_ST_WORD(d, 3) ^ CR_ST_WORD(n, 3) ^ ror32(CR_ST_WORD(d, 0), 17); + CR_ST_WORD(d, 3) = t ^ ror32(t, 17) ^ ror32(t, 9); + + rd[0] = d.l[0]; + rd[1] = d.l[1]; +} + +void HELPER(crypto_sm3partw2)(void *vd, void *vn, void *vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + union CRYPTO_STATE d = { .l = { rd[0], rd[1] } }; + union CRYPTO_STATE n = { .l = { rn[0], rn[1] } }; + union CRYPTO_STATE m = { .l = { rm[0], rm[1] } }; + uint32_t t = CR_ST_WORD(n, 0) ^ ror32(CR_ST_WORD(m, 0), 25); + + CR_ST_WORD(d, 0) ^= t; + CR_ST_WORD(d, 1) ^= CR_ST_WORD(n, 1) ^ ror32(CR_ST_WORD(m, 1), 25); + CR_ST_WORD(d, 2) ^= CR_ST_WORD(n, 2) ^ ror32(CR_ST_WORD(m, 2), 25); + CR_ST_WORD(d, 3) ^= CR_ST_WORD(n, 3) ^ ror32(CR_ST_WORD(m, 3), 25) ^ + ror32(t, 17) ^ ror32(t, 2) ^ ror32(t, 26); + + rd[0] = d.l[0]; + rd[1] = d.l[1]; +} + +void HELPER(crypto_sm3tt)(void *vd, void *vn, void *vm, uint32_t imm2, + uint32_t opcode) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + union CRYPTO_STATE d = { .l = { rd[0], rd[1] } }; + union CRYPTO_STATE n = { .l = { rn[0], rn[1] } }; + union CRYPTO_STATE m = { .l = { rm[0], rm[1] } }; + uint32_t t; + + assert(imm2 < 4); + + if (opcode == 0 || opcode == 2) { + /* SM3TT1A, SM3TT2A */ + t = par(CR_ST_WORD(d, 3), CR_ST_WORD(d, 2), CR_ST_WORD(d, 1)); + } else if (opcode == 1) { + /* SM3TT1B */ + t = maj(CR_ST_WORD(d, 3), CR_ST_WORD(d, 2), CR_ST_WORD(d, 1)); + } else if (opcode == 3) { + /* SM3TT2B */ + t = cho(CR_ST_WORD(d, 3), CR_ST_WORD(d, 2), CR_ST_WORD(d, 1)); + } else { + g_assert_not_reached(); + } + + t += CR_ST_WORD(d, 0) + CR_ST_WORD(m, imm2); + + CR_ST_WORD(d, 0) = CR_ST_WORD(d, 1); + + if (opcode < 2) { + /* SM3TT1A, SM3TT1B */ + t += CR_ST_WORD(n, 3) ^ ror32(CR_ST_WORD(d, 3), 20); + + CR_ST_WORD(d, 1) = ror32(CR_ST_WORD(d, 2), 23); + } else { + /* SM3TT2A, SM3TT2B */ + t += CR_ST_WORD(n, 3); + t ^= rol32(t, 9) ^ rol32(t, 17); + + CR_ST_WORD(d, 1) = ror32(CR_ST_WORD(d, 2), 13); + } + + CR_ST_WORD(d, 2) = CR_ST_WORD(d, 3); + CR_ST_WORD(d, 3) = t; + + rd[0] = d.l[0]; + rd[1] = d.l[1]; +} diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn) break; } } else { - unallocated_encoding(s); - return; + switch (opcode) { + case 0: /* SM3PARTW1 */ + feature = ARM_FEATURE_V8_SM3; + genfn = gen_helper_crypto_sm3partw1; + break; + case 1: /* SM3PARTW2 */ + feature = ARM_FEATURE_V8_SM3; + genfn = gen_helper_crypto_sm3partw2; + break; + default: + unallocated_encoding(s); + return; + } } if (!arm_dc_feature(s, feature)) { @@ -XXX,XX +XXX,XX @@ static void disas_crypto_four_reg(DisasContext *s, uint32_t insn) case 1: /* BCAX */ feature = ARM_FEATURE_V8_SHA3; break; + case 2: /* SM3SS1 */ + feature = ARM_FEATURE_V8_SM3; + break; default: unallocated_encoding(s); return; @@ -XXX,XX +XXX,XX @@ static void disas_crypto_four_reg(DisasContext *s, uint32_t insn) tcg_temp_free_i64(tcg_res[0]); tcg_temp_free_i64(tcg_res[1]); } else { - g_assert_not_reached(); + TCGv_i32 tcg_op1, tcg_op2, tcg_op3, tcg_res, tcg_zero; + + tcg_op1 = tcg_temp_new_i32(); + tcg_op2 = tcg_temp_new_i32(); + tcg_op3 = tcg_temp_new_i32(); + tcg_res = tcg_temp_new_i32(); + tcg_zero = tcg_const_i32(0); + + read_vec_element_i32(s, tcg_op1, rn, 3, MO_32); + read_vec_element_i32(s, tcg_op2, rm, 3, MO_32); + read_vec_element_i32(s, tcg_op3, ra, 3, MO_32); + + tcg_gen_rotri_i32(tcg_res, tcg_op1, 20); + tcg_gen_add_i32(tcg_res, tcg_res, tcg_op2); + tcg_gen_add_i32(tcg_res, tcg_res, tcg_op3); + tcg_gen_rotri_i32(tcg_res, tcg_res, 25); + + write_vec_element_i32(s, tcg_zero, rd, 0, MO_32); + write_vec_element_i32(s, tcg_zero, rd, 1, MO_32); + write_vec_element_i32(s, tcg_zero, rd, 2, MO_32); + write_vec_element_i32(s, tcg_res, rd, 3, MO_32); + + tcg_temp_free_i32(tcg_op1); + tcg_temp_free_i32(tcg_op2); + tcg_temp_free_i32(tcg_op3); + tcg_temp_free_i32(tcg_res); + tcg_temp_free_i32(tcg_zero); } } @@ -XXX,XX +XXX,XX @@ static void disas_crypto_xar(DisasContext *s, uint32_t insn) tcg_temp_free_i64(tcg_res[1]); } +/* Crypto three-reg imm2 + * 31 21 20 16 15 14 13 12 11 10 9 5 4 0 + * +-----------------------+------+-----+------+--------+------+------+ + * | 1 1 0 0 1 1 1 0 0 1 0 | Rm | 1 0 | imm2 | opcode | Rn | Rd | + * +-----------------------+------+-----+------+--------+------+------+ + */ +static void disas_crypto_three_reg_imm2(DisasContext *s, uint32_t insn) +{ + int opcode = extract32(insn, 10, 2); + int imm2 = extract32(insn, 12, 2); + int rm = extract32(insn, 16, 5); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + TCGv_ptr tcg_rd_ptr, tcg_rn_ptr, tcg_rm_ptr; + TCGv_i32 tcg_imm2, tcg_opcode; + + if (!arm_dc_feature(s, ARM_FEATURE_V8_SM3)) { + unallocated_encoding(s); + return; + } + + if (!fp_access_check(s)) { + return; + } + + tcg_rd_ptr = vec_full_reg_ptr(s, rd); + tcg_rn_ptr = vec_full_reg_ptr(s, rn); + tcg_rm_ptr = vec_full_reg_ptr(s, rm); + tcg_imm2 = tcg_const_i32(imm2); + tcg_opcode = tcg_const_i32(opcode); + + gen_helper_crypto_sm3tt(tcg_rd_ptr, tcg_rn_ptr, tcg_rm_ptr, tcg_imm2, + tcg_opcode); + + tcg_temp_free_ptr(tcg_rd_ptr); + tcg_temp_free_ptr(tcg_rn_ptr); + tcg_temp_free_ptr(tcg_rm_ptr); + tcg_temp_free_i32(tcg_imm2); + tcg_temp_free_i32(tcg_opcode); +} + /* C3.6 Data processing - SIMD, inc Crypto * * As the decode gets a little complex we are using a table based @@ -XXX,XX +XXX,XX @@ static const AArch64DecodeTable data_proc_simd[] = { { 0xcec08000, 0xfffff000, disas_crypto_two_reg_sha512 }, { 0xce000000, 0xff808000, disas_crypto_four_reg }, { 0xce800000, 0xffe00000, disas_crypto_xar }, + { 0xce408000, 0xffe0c000, disas_crypto_three_reg_imm2 }, { 0x00000000, 0x00000000, NULL } }; -- 2.16.1 From: Ard Biesheuvel <ard.biesheuvel@linaro.org> This implements emulation of the new SM4 instructions that have been added as an optional extension to the ARMv8 Crypto Extensions in ARM v8.2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 20180207111729.15737-5-ard.biesheuvel@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 1 + target/arm/helper.h | 3 ++ target/arm/crypto_helper.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++ target/arm/translate-a64.c | 8 ++++ 4 files changed, 103 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ enum arm_features { ARM_FEATURE_V8_SHA512, /* implements SHA512 part of v8 Crypto Extensions */ ARM_FEATURE_V8_SHA3, /* implements SHA3 part of v8 Crypto Extensions */ ARM_FEATURE_V8_SM3, /* implements SM3 part of v8 Crypto Extensions */ + ARM_FEATURE_V8_SM4, /* implements SM4 part of v8 Crypto Extensions */ }; static inline int arm_feature(CPUARMState *env, int feature) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(crypto_sm3tt, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32, i32) DEF_HELPER_FLAGS_3(crypto_sm3partw1, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) DEF_HELPER_FLAGS_3(crypto_sm3partw2, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) +DEF_HELPER_FLAGS_2(crypto_sm4e, TCG_CALL_NO_RWG, void, ptr, ptr) +DEF_HELPER_FLAGS_3(crypto_sm4ekey, TCG_CALL_NO_RWG, void, ptr, ptr, ptr) + DEF_HELPER_FLAGS_3(crc32, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_FLAGS_3(crc32c, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32) DEF_HELPER_2(dc_zva, void, env, i64) diff --git a/target/arm/crypto_helper.c b/target/arm/crypto_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/crypto_helper.c +++ b/target/arm/crypto_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(crypto_sm3tt)(void *vd, void *vn, void *vm, uint32_t imm2, rd[0] = d.l[0]; rd[1] = d.l[1]; } + +static uint8_t const sm4_sbox[] = { + 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, + 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05, + 0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, + 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, + 0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, + 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62, + 0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, + 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6, + 0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, + 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8, + 0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, + 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35, + 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, + 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87, + 0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, + 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e, + 0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, + 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1, + 0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, + 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3, + 0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, + 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f, + 0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, + 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51, + 0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, + 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8, + 0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, + 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0, + 0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, + 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84, + 0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, + 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48, +}; + +void HELPER(crypto_sm4e)(void *vd, void *vn) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + union CRYPTO_STATE d = { .l = { rd[0], rd[1] } }; + union CRYPTO_STATE n = { .l = { rn[0], rn[1] } }; + uint32_t t, i; + + for (i = 0; i < 4; i++) { + t = CR_ST_WORD(d, (i + 1) % 4) ^ + CR_ST_WORD(d, (i + 2) % 4) ^ + CR_ST_WORD(d, (i + 3) % 4) ^ + CR_ST_WORD(n, i); + + t = sm4_sbox[t & 0xff] | + sm4_sbox[(t >> 8) & 0xff] << 8 | + sm4_sbox[(t >> 16) & 0xff] << 16 | + sm4_sbox[(t >> 24) & 0xff] << 24; + + CR_ST_WORD(d, i) ^= t ^ rol32(t, 2) ^ rol32(t, 10) ^ rol32(t, 18) ^ + rol32(t, 24); + } + + rd[0] = d.l[0]; + rd[1] = d.l[1]; +} + +void HELPER(crypto_sm4ekey)(void *vd, void *vn, void* vm) +{ + uint64_t *rd = vd; + uint64_t *rn = vn; + uint64_t *rm = vm; + union CRYPTO_STATE d; + union CRYPTO_STATE n = { .l = { rn[0], rn[1] } }; + union CRYPTO_STATE m = { .l = { rm[0], rm[1] } }; + uint32_t t, i; + + d = n; + for (i = 0; i < 4; i++) { + t = CR_ST_WORD(d, (i + 1) % 4) ^ + CR_ST_WORD(d, (i + 2) % 4) ^ + CR_ST_WORD(d, (i + 3) % 4) ^ + CR_ST_WORD(m, i); + + t = sm4_sbox[t & 0xff] | + sm4_sbox[(t >> 8) & 0xff] << 8 | + sm4_sbox[(t >> 16) & 0xff] << 16 | + sm4_sbox[(t >> 24) & 0xff] << 24; + + CR_ST_WORD(d, i) ^= t ^ rol32(t, 13) ^ rol32(t, 23); + } + + rd[0] = d.l[0]; + rd[1] = d.l[1]; +} diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn) feature = ARM_FEATURE_V8_SM3; genfn = gen_helper_crypto_sm3partw2; break; + case 2: /* SM4EKEY */ + feature = ARM_FEATURE_V8_SM4; + genfn = gen_helper_crypto_sm4ekey; + break; default: unallocated_encoding(s); return; @@ -XXX,XX +XXX,XX @@ static void disas_crypto_two_reg_sha512(DisasContext *s, uint32_t insn) feature = ARM_FEATURE_V8_SHA512; genfn = gen_helper_crypto_sha512su0; break; + case 1: /* SM4E */ + feature = ARM_FEATURE_V8_SM4; + genfn = gen_helper_crypto_sm4e; + break; default: unallocated_encoding(s); return; -- 2.16.1 From: Ard Biesheuvel <ard.biesheuvel@linaro.org> Add support for the new ARMv8.2 SHA-3, SM3, SM4 and SHA-512 instructions to AArch64 user mode emulation. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Message-id: 20180207111729.15737-6-ard.biesheuvel@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- linux-user/elfload.c | 19 +++++++++++++++++++ target/arm/cpu64.c | 4 ++++ 2 files changed, 23 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index XXXXXXX..XXXXXXX 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -XXX,XX +XXX,XX @@ enum { ARM_HWCAP_A64_SHA1 = 1 << 5, ARM_HWCAP_A64_SHA2 = 1 << 6, ARM_HWCAP_A64_CRC32 = 1 << 7, + ARM_HWCAP_A64_ATOMICS = 1 << 8, + ARM_HWCAP_A64_FPHP = 1 << 9, + ARM_HWCAP_A64_ASIMDHP = 1 << 10, + ARM_HWCAP_A64_CPUID = 1 << 11, + ARM_HWCAP_A64_ASIMDRDM = 1 << 12, + ARM_HWCAP_A64_JSCVT = 1 << 13, + ARM_HWCAP_A64_FCMA = 1 << 14, + ARM_HWCAP_A64_LRCPC = 1 << 15, + ARM_HWCAP_A64_DCPOP = 1 << 16, + ARM_HWCAP_A64_SHA3 = 1 << 17, + ARM_HWCAP_A64_SM3 = 1 << 18, + ARM_HWCAP_A64_SM4 = 1 << 19, + ARM_HWCAP_A64_ASIMDDP = 1 << 20, + ARM_HWCAP_A64_SHA512 = 1 << 21, + ARM_HWCAP_A64_SVE = 1 << 22, }; #define ELF_HWCAP get_elf_hwcap() @@ -XXX,XX +XXX,XX @@ static uint32_t get_elf_hwcap(void) GET_FEATURE(ARM_FEATURE_V8_SHA1, ARM_HWCAP_A64_SHA1); GET_FEATURE(ARM_FEATURE_V8_SHA256, ARM_HWCAP_A64_SHA2); GET_FEATURE(ARM_FEATURE_CRC, ARM_HWCAP_A64_CRC32); + GET_FEATURE(ARM_FEATURE_V8_SHA3, ARM_HWCAP_A64_SHA3); + GET_FEATURE(ARM_FEATURE_V8_SM3, ARM_HWCAP_A64_SM3); + GET_FEATURE(ARM_FEATURE_V8_SM4, ARM_HWCAP_A64_SM4); + GET_FEATURE(ARM_FEATURE_V8_SHA512, ARM_HWCAP_A64_SHA512); #undef GET_FEATURE return hwcaps; diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -XXX,XX +XXX,XX @@ static void aarch64_any_initfn(Object *obj) set_feature(&cpu->env, ARM_FEATURE_V8_AES); set_feature(&cpu->env, ARM_FEATURE_V8_SHA1); set_feature(&cpu->env, ARM_FEATURE_V8_SHA256); + set_feature(&cpu->env, ARM_FEATURE_V8_SHA512); + set_feature(&cpu->env, ARM_FEATURE_V8_SHA3); + set_feature(&cpu->env, ARM_FEATURE_V8_SM3); + set_feature(&cpu->env, ARM_FEATURE_V8_SM4); set_feature(&cpu->env, ARM_FEATURE_V8_PMULL); set_feature(&cpu->env, ARM_FEATURE_CRC); cpu->ctr = 0x80038003; /* 32 byte I and D cacheline size, VIPT icache */ -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> IP block found on several generations of i.MX family does not use vanilla SDHCI implementation and it comes with a number of quirks. Introduce i.MX SDHCI subtype of SDHCI block to add code necessary to support unmodified Linux guest driver. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> [PMM: define and use ESDHC_UNDOCUMENTED_REG27] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/sd/sdhci-internal.h | 23 +++++ include/hw/sd/sdhci.h | 13 +++ hw/sd/sdhci.c | 230 ++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 265 insertions(+), 1 deletion(-) diff --git a/hw/sd/sdhci-internal.h b/hw/sd/sdhci-internal.h index XXXXXXX..XXXXXXX 100644 --- a/hw/sd/sdhci-internal.h +++ b/hw/sd/sdhci-internal.h @@ -XXX,XX +XXX,XX @@ /* R/W Host control Register 0x0 */ #define SDHC_HOSTCTL 0x28 +#define SDHC_CTRL_LED 0x01 #define SDHC_CTRL_DMA_CHECK_MASK 0x18 #define SDHC_CTRL_SDMA 0x00 #define SDHC_CTRL_ADMA1_32 0x08 #define SDHC_CTRL_ADMA2_32 0x10 #define SDHC_CTRL_ADMA2_64 0x18 #define SDHC_DMA_TYPE(x) ((x) & SDHC_CTRL_DMA_CHECK_MASK) +#define SDHC_CTRL_4BITBUS 0x02 +#define SDHC_CTRL_8BITBUS 0x20 +#define SDHC_CTRL_CDTEST_INS 0x40 +#define SDHC_CTRL_CDTEST_EN 0x80 + /* R/W Power Control Register 0x0 */ #define SDHC_PWRCON 0x29 @@ -XXX,XX +XXX,XX @@ enum { sdhc_gap_write = 2 /* SDHC stopped at block gap during write operation */ }; +extern const VMStateDescription sdhci_vmstate; + + +#define ESDHC_MIX_CTRL 0x48 +#define ESDHC_VENDOR_SPEC 0xc0 +#define ESDHC_DLL_CTRL 0x60 + +#define ESDHC_TUNING_CTRL 0xcc +#define ESDHC_TUNE_CTRL_STATUS 0x68 +#define ESDHC_WTMK_LVL 0x44 + +/* Undocumented register used by guests working around erratum ERR004536 */ +#define ESDHC_UNDOCUMENTED_REG27 0x6c + +#define ESDHC_CTRL_4BITBUS (0x1 << 1) +#define ESDHC_CTRL_8BITBUS (0x2 << 1) + #endif diff --git a/include/hw/sd/sdhci.h b/include/hw/sd/sdhci.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/sd/sdhci.h +++ b/include/hw/sd/sdhci.h @@ -XXX,XX +XXX,XX @@ typedef struct SDHCIState { AddressSpace sysbus_dma_as; AddressSpace *dma_as; MemoryRegion *dma_mr; + const MemoryRegionOps *io_ops; QEMUTimer *insert_timer; /* timer for 'changing' sd card. */ QEMUTimer *transfer_timer; @@ -XXX,XX +XXX,XX @@ typedef struct SDHCIState { /* Configurable properties */ bool pending_insert_quirk; /* Quirk for Raspberry Pi card insert int */ + uint32_t quirks; } SDHCIState; +/* + * Controller does not provide transfer-complete interrupt when not + * busy. + * + * NOTE: This definition is taken out of Linux kernel and so the + * original bit number is preserved + */ +#define SDHCI_QUIRK_NO_BUSY_IRQ BIT(14) + #define TYPE_PCI_SDHCI "sdhci-pci" #define PCI_SDHCI(obj) OBJECT_CHECK(SDHCIState, (obj), TYPE_PCI_SDHCI) @@ -XXX,XX +XXX,XX @@ typedef struct SDHCIState { #define SYSBUS_SDHCI(obj) \ OBJECT_CHECK(SDHCIState, (obj), TYPE_SYSBUS_SDHCI) +#define TYPE_IMX_USDHC "imx-usdhc" + #endif /* SDHCI_H */ diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index XXXXXXX..XXXXXXX 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -XXX,XX +XXX,XX @@ static void sdhci_send_command(SDHCIState *s) } } - if ((s->norintstsen & SDHC_NISEN_TRSCMP) && + if (!(s->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) && + (s->norintstsen & SDHC_NISEN_TRSCMP) && (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { s->norintsts |= SDHC_NIS_TRSCMP; } @@ -XXX,XX +XXX,XX @@ static void sdhci_initfn(SDHCIState *s) s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s); s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_data_transfer, s); + + s->io_ops = &sdhci_mmio_ops; } static void sdhci_uninitfn(SDHCIState *s) @@ -XXX,XX +XXX,XX @@ static void sdhci_sysbus_realize(DeviceState *dev, Error ** errp) } sysbus_init_irq(sbd, &s->irq); + + memory_region_init_io(&s->iomem, OBJECT(s), s->io_ops, s, "sdhci", + SDHC_REGISTERS_MAP_SIZE); + sysbus_init_mmio(sbd, &s->iomem); } @@ -XXX,XX +XXX,XX @@ static const TypeInfo sdhci_bus_info = { .class_init = sdhci_bus_class_init, }; +static uint64_t usdhc_read(void *opaque, hwaddr offset, unsigned size) +{ + SDHCIState *s = SYSBUS_SDHCI(opaque); + uint32_t ret; + uint16_t hostctl; + + switch (offset) { + default: + return sdhci_read(opaque, offset, size); + + case SDHC_HOSTCTL: + /* + * For a detailed explanation on the following bit + * manipulation code see comments in a similar part of + * usdhc_write() + */ + hostctl = SDHC_DMA_TYPE(s->hostctl) << (8 - 3); + + if (s->hostctl & SDHC_CTRL_8BITBUS) { + hostctl |= ESDHC_CTRL_8BITBUS; + } + + if (s->hostctl & SDHC_CTRL_4BITBUS) { + hostctl |= ESDHC_CTRL_4BITBUS; + } + + ret = hostctl; + ret |= (uint32_t)s->blkgap << 16; + ret |= (uint32_t)s->wakcon << 24; + + break; + + case ESDHC_DLL_CTRL: + case ESDHC_TUNE_CTRL_STATUS: + case ESDHC_UNDOCUMENTED_REG27: + case ESDHC_TUNING_CTRL: + case ESDHC_VENDOR_SPEC: + case ESDHC_MIX_CTRL: + case ESDHC_WTMK_LVL: + ret = 0; + break; + } + + return ret; +} + +static void +usdhc_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) +{ + SDHCIState *s = SYSBUS_SDHCI(opaque); + uint8_t hostctl; + uint32_t value = (uint32_t)val; + + switch (offset) { + case ESDHC_DLL_CTRL: + case ESDHC_TUNE_CTRL_STATUS: + case ESDHC_UNDOCUMENTED_REG27: + case ESDHC_TUNING_CTRL: + case ESDHC_WTMK_LVL: + case ESDHC_VENDOR_SPEC: + break; + + case SDHC_HOSTCTL: + /* + * Here's What ESDHCI has at offset 0x28 (SDHC_HOSTCTL) + * + * 7 6 5 4 3 2 1 0 + * |-----------+--------+--------+-----------+----------+---------| + * | Card | Card | Endian | DATA3 | Data | Led | + * | Detect | Detect | Mode | as Card | Transfer | Control | + * | Signal | Test | | Detection | Width | | + * | Selection | Level | | Pin | | | + * |-----------+--------+--------+-----------+----------+---------| + * + * and 0x29 + * + * 15 10 9 8 + * |----------+------| + * | Reserved | DMA | + * | | Sel. | + * | | | + * |----------+------| + * + * and here's what SDCHI spec expects those offsets to be: + * + * 0x28 (Host Control Register) + * + * 7 6 5 4 3 2 1 0 + * |--------+--------+----------+------+--------+----------+---------| + * | Card | Card | Extended | DMA | High | Data | LED | + * | Detect | Detect | Data | Sel. | Speed | Transfer | Control | + * | Signal | Test | Transfer | | Enable | Width | | + * | Sel. | Level | Width | | | | | + * |--------+--------+----------+------+--------+----------+---------| + * + * and 0x29 (Power Control Register) + * + * |----------------------------------| + * | Power Control Register | + * | | + * | Description omitted, | + * | since it has no analog in ESDHCI | + * | | + * |----------------------------------| + * + * Since offsets 0x2A and 0x2B should be compatible between + * both IP specs we only need to reconcile least 16-bit of the + * word we've been given. + */ + + /* + * First, save bits 7 6 and 0 since they are identical + */ + hostctl = value & (SDHC_CTRL_LED | + SDHC_CTRL_CDTEST_INS | + SDHC_CTRL_CDTEST_EN); + /* + * Second, split "Data Transfer Width" from bits 2 and 1 in to + * bits 5 and 1 + */ + if (value & ESDHC_CTRL_8BITBUS) { + hostctl |= SDHC_CTRL_8BITBUS; + } + + if (value & ESDHC_CTRL_4BITBUS) { + hostctl |= ESDHC_CTRL_4BITBUS; + } + + /* + * Third, move DMA select from bits 9 and 8 to bits 4 and 3 + */ + hostctl |= SDHC_DMA_TYPE(value >> (8 - 3)); + + /* + * Now place the corrected value into low 16-bit of the value + * we are going to give standard SDHCI write function + * + * NOTE: This transformation should be the inverse of what can + * be found in drivers/mmc/host/sdhci-esdhc-imx.c in Linux + * kernel + */ + value &= ~UINT16_MAX; + value |= hostctl; + value |= (uint16_t)s->pwrcon << 8; + + sdhci_write(opaque, offset, value, size); + break; + + case ESDHC_MIX_CTRL: + /* + * So, when SD/MMC stack in Linux tries to write to "Transfer + * Mode Register", ESDHC i.MX quirk code will translate it + * into a write to ESDHC_MIX_CTRL, so we do the opposite in + * order to get where we started + * + * Note that Auto CMD23 Enable bit is located in a wrong place + * on i.MX, but since it is not used by QEMU we do not care. + * + * We don't want to call sdhci_write(.., SDHC_TRNMOD, ...) + * here becuase it will result in a call to + * sdhci_send_command(s) which we don't want. + * + */ + s->trnmod = value & UINT16_MAX; + break; + case SDHC_TRNMOD: + /* + * Similar to above, but this time a write to "Command + * Register" will be translated into a 4-byte write to + * "Transfer Mode register" where lower 16-bit of value would + * be set to zero. So what we do is fill those bits with + * cached value from s->trnmod and let the SDHCI + * infrastructure handle the rest + */ + sdhci_write(opaque, offset, val | s->trnmod, size); + break; + case SDHC_BLKSIZE: + /* + * ESDHCI does not implement "Host SDMA Buffer Boundary", and + * Linux driver will try to zero this field out which will + * break the rest of SDHCI emulation. + * + * Linux defaults to maximum possible setting (512K boundary) + * and it seems to be the only option that i.MX IP implements, + * so we artificially set it to that value. + */ + val |= 0x7 << 12; + /* FALLTHROUGH */ + default: + sdhci_write(opaque, offset, val, size); + break; + } +} + + +static const MemoryRegionOps usdhc_mmio_ops = { + .read = usdhc_read, + .write = usdhc_write, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + .unaligned = false + }, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void imx_usdhc_init(Object *obj) +{ + SDHCIState *s = SYSBUS_SDHCI(obj); + + s->io_ops = &usdhc_mmio_ops; + s->quirks = SDHCI_QUIRK_NO_BUSY_IRQ; +} + +static const TypeInfo imx_usdhc_info = { + .name = TYPE_IMX_USDHC, + .parent = TYPE_SYSBUS_SDHCI, + .instance_init = imx_usdhc_init, +}; + static void sdhci_register_types(void) { type_register_static(&sdhci_pci_info); type_register_static(&sdhci_sysbus_info); type_register_static(&sdhci_bus_info); + type_register_static(&imx_usdhc_info); } type_init(sdhci_register_types) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Convert i.MX6 to use TYPE_IMX_USDHC since that's what real HW comes with. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/arm/fsl-imx6.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/fsl-imx6.c +++ b/hw/arm/fsl-imx6.c @@ -XXX,XX +XXX,XX @@ static void fsl_imx6_init(Object *obj) } for (i = 0; i < FSL_IMX6_NUM_ESDHCS; i++) { - object_initialize(&s->esdhc[i], sizeof(s->esdhc[i]), TYPE_SYSBUS_SDHCI); + object_initialize(&s->esdhc[i], sizeof(s->esdhc[i]), TYPE_IMX_USDHC); qdev_set_parent_bus(DEVICE(&s->esdhc[i]), sysbus_get_default()); snprintf(name, NAME_SIZE, "sdhc%d", i + 1); object_property_add_child(obj, name, OBJECT(&s->esdhc[i]), NULL); -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/Makefile.objs | 1 + include/hw/misc/imx7_ccm.h | 139 +++++++++++++++++++++++ hw/misc/imx7_ccm.c | 277 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 417 insertions(+) create mode 100644 include/hw/misc/imx7_ccm.h create mode 100644 hw/misc/imx7_ccm.c diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -XXX,XX +XXX,XX @@ obj-$(CONFIG_IMX) += imx31_ccm.o obj-$(CONFIG_IMX) += imx25_ccm.o obj-$(CONFIG_IMX) += imx6_ccm.o obj-$(CONFIG_IMX) += imx6_src.o +obj-$(CONFIG_IMX) += imx7_ccm.o obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o obj-$(CONFIG_MAINSTONE) += mst_fpga.o diff --git a/include/hw/misc/imx7_ccm.h b/include/hw/misc/imx7_ccm.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/misc/imx7_ccm.h @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2017, Impinj, Inc. + * + * i.MX7 CCM, PMU and ANALOG IP blocks emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX7_CCM_H +#define IMX7_CCM_H + +#include "hw/misc/imx_ccm.h" +#include "qemu/bitops.h" + +enum IMX7AnalogRegisters { + ANALOG_PLL_ARM, + ANALOG_PLL_ARM_SET, + ANALOG_PLL_ARM_CLR, + ANALOG_PLL_ARM_TOG, + ANALOG_PLL_DDR, + ANALOG_PLL_DDR_SET, + ANALOG_PLL_DDR_CLR, + ANALOG_PLL_DDR_TOG, + ANALOG_PLL_DDR_SS, + ANALOG_PLL_DDR_SS_SET, + ANALOG_PLL_DDR_SS_CLR, + ANALOG_PLL_DDR_SS_TOG, + ANALOG_PLL_DDR_NUM, + ANALOG_PLL_DDR_NUM_SET, + ANALOG_PLL_DDR_NUM_CLR, + ANALOG_PLL_DDR_NUM_TOG, + ANALOG_PLL_DDR_DENOM, + ANALOG_PLL_DDR_DENOM_SET, + ANALOG_PLL_DDR_DENOM_CLR, + ANALOG_PLL_DDR_DENOM_TOG, + ANALOG_PLL_480, + ANALOG_PLL_480_SET, + ANALOG_PLL_480_CLR, + ANALOG_PLL_480_TOG, + ANALOG_PLL_480A, + ANALOG_PLL_480A_SET, + ANALOG_PLL_480A_CLR, + ANALOG_PLL_480A_TOG, + ANALOG_PLL_480B, + ANALOG_PLL_480B_SET, + ANALOG_PLL_480B_CLR, + ANALOG_PLL_480B_TOG, + ANALOG_PLL_ENET, + ANALOG_PLL_ENET_SET, + ANALOG_PLL_ENET_CLR, + ANALOG_PLL_ENET_TOG, + ANALOG_PLL_AUDIO, + ANALOG_PLL_AUDIO_SET, + ANALOG_PLL_AUDIO_CLR, + ANALOG_PLL_AUDIO_TOG, + ANALOG_PLL_AUDIO_SS, + ANALOG_PLL_AUDIO_SS_SET, + ANALOG_PLL_AUDIO_SS_CLR, + ANALOG_PLL_AUDIO_SS_TOG, + ANALOG_PLL_AUDIO_NUM, + ANALOG_PLL_AUDIO_NUM_SET, + ANALOG_PLL_AUDIO_NUM_CLR, + ANALOG_PLL_AUDIO_NUM_TOG, + ANALOG_PLL_AUDIO_DENOM, + ANALOG_PLL_AUDIO_DENOM_SET, + ANALOG_PLL_AUDIO_DENOM_CLR, + ANALOG_PLL_AUDIO_DENOM_TOG, + ANALOG_PLL_VIDEO, + ANALOG_PLL_VIDEO_SET, + ANALOG_PLL_VIDEO_CLR, + ANALOG_PLL_VIDEO_TOG, + ANALOG_PLL_VIDEO_SS, + ANALOG_PLL_VIDEO_SS_SET, + ANALOG_PLL_VIDEO_SS_CLR, + ANALOG_PLL_VIDEO_SS_TOG, + ANALOG_PLL_VIDEO_NUM, + ANALOG_PLL_VIDEO_NUM_SET, + ANALOG_PLL_VIDEO_NUM_CLR, + ANALOG_PLL_VIDEO_NUM_TOG, + ANALOG_PLL_VIDEO_DENOM, + ANALOG_PLL_VIDEO_DENOM_SET, + ANALOG_PLL_VIDEO_DENOM_CLR, + ANALOG_PLL_VIDEO_DENOM_TOG, + ANALOG_PLL_MISC0, + ANALOG_PLL_MISC0_SET, + ANALOG_PLL_MISC0_CLR, + ANALOG_PLL_MISC0_TOG, + + ANALOG_DIGPROG = 0x800 / sizeof(uint32_t), + ANALOG_MAX, + + ANALOG_PLL_LOCK = BIT(31) +}; + +enum IMX7CCMRegisters { + CCM_MAX = 0xBE00 / sizeof(uint32_t) + 1, +}; + +enum IMX7PMURegisters { + PMU_MAX = 0x140 / sizeof(uint32_t), +}; + +#define TYPE_IMX7_CCM "imx7.ccm" +#define IMX7_CCM(obj) OBJECT_CHECK(IMX7CCMState, (obj), TYPE_IMX7_CCM) + +typedef struct IMX7CCMState { + /* <private> */ + IMXCCMState parent_obj; + + /* <public> */ + MemoryRegion iomem; + + uint32_t ccm[CCM_MAX]; +} IMX7CCMState; + + +#define TYPE_IMX7_ANALOG "imx7.analog" +#define IMX7_ANALOG(obj) OBJECT_CHECK(IMX7AnalogState, (obj), TYPE_IMX7_ANALOG) + +typedef struct IMX7AnalogState { + /* <private> */ + IMXCCMState parent_obj; + + /* <public> */ + struct { + MemoryRegion container; + MemoryRegion analog; + MemoryRegion digprog; + MemoryRegion pmu; + } mmio; + + uint32_t analog[ANALOG_MAX]; + uint32_t pmu[PMU_MAX]; +} IMX7AnalogState; + +#endif /* IMX7_CCM_H */ diff --git a/hw/misc/imx7_ccm.c b/hw/misc/imx7_ccm.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/misc/imx7_ccm.c @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2018, Impinj, Inc. + * + * i.MX7 CCM, PMU and ANALOG IP blocks emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" + +#include "hw/misc/imx7_ccm.h" + +static void imx7_analog_reset(DeviceState *dev) +{ + IMX7AnalogState *s = IMX7_ANALOG(dev); + + memset(s->pmu, 0, sizeof(s->pmu)); + memset(s->analog, 0, sizeof(s->analog)); + + s->analog[ANALOG_PLL_ARM] = 0x00002042; + s->analog[ANALOG_PLL_DDR] = 0x0060302c; + s->analog[ANALOG_PLL_DDR_SS] = 0x00000000; + s->analog[ANALOG_PLL_DDR_NUM] = 0x06aaac4d; + s->analog[ANALOG_PLL_DDR_DENOM] = 0x100003ec; + s->analog[ANALOG_PLL_480] = 0x00002000; + s->analog[ANALOG_PLL_480A] = 0x52605a56; + s->analog[ANALOG_PLL_480B] = 0x52525216; + s->analog[ANALOG_PLL_ENET] = 0x00001fc0; + s->analog[ANALOG_PLL_AUDIO] = 0x0001301b; + s->analog[ANALOG_PLL_AUDIO_SS] = 0x00000000; + s->analog[ANALOG_PLL_AUDIO_NUM] = 0x05f5e100; + s->analog[ANALOG_PLL_AUDIO_DENOM] = 0x2964619c; + s->analog[ANALOG_PLL_VIDEO] = 0x0008201b; + s->analog[ANALOG_PLL_VIDEO_SS] = 0x00000000; + s->analog[ANALOG_PLL_VIDEO_NUM] = 0x0000f699; + s->analog[ANALOG_PLL_VIDEO_DENOM] = 0x000f4240; + s->analog[ANALOG_PLL_MISC0] = 0x00000000; + + /* all PLLs need to be locked */ + s->analog[ANALOG_PLL_ARM] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_DDR] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_480] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_480A] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_480B] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_ENET] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_AUDIO] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_VIDEO] |= ANALOG_PLL_LOCK; + s->analog[ANALOG_PLL_MISC0] |= ANALOG_PLL_LOCK; + + /* + * Since I couldn't find any info about this in the reference + * manual the value of this register is based strictly on matching + * what Linux kernel expects it to be. + */ + s->analog[ANALOG_DIGPROG] = 0x720000; + /* + * Set revision to be 1.0 (Arbitrary choice, no particular + * reason). + */ + s->analog[ANALOG_DIGPROG] |= 0x000010; +} + +static void imx7_ccm_reset(DeviceState *dev) +{ + IMX7CCMState *s = IMX7_CCM(dev); + + memset(s->ccm, 0, sizeof(s->ccm)); +} + +#define CCM_INDEX(offset) (((offset) & ~(hwaddr)0xF) / sizeof(uint32_t)) +#define CCM_BITOP(offset) ((offset) & (hwaddr)0xF) + +enum { + CCM_BITOP_NONE = 0x00, + CCM_BITOP_SET = 0x04, + CCM_BITOP_CLR = 0x08, + CCM_BITOP_TOG = 0x0C, +}; + +static uint64_t imx7_set_clr_tog_read(void *opaque, hwaddr offset, + unsigned size) +{ + const uint32_t *mmio = opaque; + + return mmio[CCM_INDEX(offset)]; +} + +static void imx7_set_clr_tog_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ + const uint8_t bitop = CCM_BITOP(offset); + const uint32_t index = CCM_INDEX(offset); + uint32_t *mmio = opaque; + + switch (bitop) { + case CCM_BITOP_NONE: + mmio[index] = value; + break; + case CCM_BITOP_SET: + mmio[index] |= value; + break; + case CCM_BITOP_CLR: + mmio[index] &= ~value; + break; + case CCM_BITOP_TOG: + mmio[index] ^= value; + break; + }; +} + +static const struct MemoryRegionOps imx7_set_clr_tog_ops = { + .read = imx7_set_clr_tog_read, + .write = imx7_set_clr_tog_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the real + * device but in practice there is no reason for a guest to access + * this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static const struct MemoryRegionOps imx7_digprog_ops = { + .read = imx7_set_clr_tog_read, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx7_ccm_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMX7CCMState *s = IMX7_CCM(obj); + + memory_region_init_io(&s->iomem, + obj, + &imx7_set_clr_tog_ops, + s->ccm, + TYPE_IMX7_CCM ".ccm", + sizeof(s->ccm)); + + sysbus_init_mmio(sd, &s->iomem); +} + +static void imx7_analog_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMX7AnalogState *s = IMX7_ANALOG(obj); + + memory_region_init(&s->mmio.container, obj, TYPE_IMX7_ANALOG, + 0x10000); + + memory_region_init_io(&s->mmio.analog, + obj, + &imx7_set_clr_tog_ops, + s->analog, + TYPE_IMX7_ANALOG, + sizeof(s->analog)); + + memory_region_add_subregion(&s->mmio.container, + 0x60, &s->mmio.analog); + + memory_region_init_io(&s->mmio.pmu, + obj, + &imx7_set_clr_tog_ops, + s->pmu, + TYPE_IMX7_ANALOG ".pmu", + sizeof(s->pmu)); + + memory_region_add_subregion(&s->mmio.container, + 0x200, &s->mmio.pmu); + + memory_region_init_io(&s->mmio.digprog, + obj, + &imx7_digprog_ops, + &s->analog[ANALOG_DIGPROG], + TYPE_IMX7_ANALOG ".digprog", + sizeof(uint32_t)); + + memory_region_add_subregion_overlap(&s->mmio.container, + 0x800, &s->mmio.digprog, 10); + + + sysbus_init_mmio(sd, &s->mmio.container); +} + +static const VMStateDescription vmstate_imx7_ccm = { + .name = TYPE_IMX7_CCM, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(ccm, IMX7CCMState, CCM_MAX), + VMSTATE_END_OF_LIST() + }, +}; + +static uint32_t imx7_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock) +{ + /* + * This function is "consumed" by GPT emulation code, however on + * i.MX7 each GPT block can have their own clock root. This means + * that this functions needs somehow to know requester's identity + * and the way to pass it: be it via additional IMXClk constants + * or by adding another argument to this method needs to be + * figured out + */ + qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Not implemented\n", + TYPE_IMX7_CCM, __func__); + return 0; +} + +static void imx7_ccm_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + IMXCCMClass *ccm = IMX_CCM_CLASS(klass); + + dc->reset = imx7_ccm_reset; + dc->vmsd = &vmstate_imx7_ccm; + dc->desc = "i.MX7 Clock Control Module"; + + ccm->get_clock_frequency = imx7_ccm_get_clock_frequency; +} + +static const TypeInfo imx7_ccm_info = { + .name = TYPE_IMX7_CCM, + .parent = TYPE_IMX_CCM, + .instance_size = sizeof(IMX7CCMState), + .instance_init = imx7_ccm_init, + .class_init = imx7_ccm_class_init, +}; + +static const VMStateDescription vmstate_imx7_analog = { + .name = TYPE_IMX7_ANALOG, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(analog, IMX7AnalogState, ANALOG_MAX), + VMSTATE_UINT32_ARRAY(pmu, IMX7AnalogState, PMU_MAX), + VMSTATE_END_OF_LIST() + }, +}; + +static void imx7_analog_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = imx7_analog_reset; + dc->vmsd = &vmstate_imx7_analog; + dc->desc = "i.MX7 Analog Module"; +} + +static const TypeInfo imx7_analog_info = { + .name = TYPE_IMX7_ANALOG, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMX7AnalogState), + .instance_init = imx7_analog_init, + .class_init = imx7_analog_class_init, +}; + +static void imx7_ccm_register_type(void) +{ + type_register_static(&imx7_ccm_info); + type_register_static(&imx7_analog_info); +} +type_init(imx7_ccm_register_type) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add enough code to emulate i.MX2 watchdog IP block so it would be possible to reboot the machine running Linux Guest. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/Makefile.objs | 1 + include/hw/misc/imx2_wdt.h | 33 +++++++++++++++++ hw/misc/imx2_wdt.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 123 insertions(+) create mode 100644 include/hw/misc/imx2_wdt.h create mode 100644 hw/misc/imx2_wdt.c diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -XXX,XX +XXX,XX @@ obj-$(CONFIG_IMX) += imx25_ccm.o obj-$(CONFIG_IMX) += imx6_ccm.o obj-$(CONFIG_IMX) += imx6_src.o obj-$(CONFIG_IMX) += imx7_ccm.o +obj-$(CONFIG_IMX) += imx2_wdt.o obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o obj-$(CONFIG_MAINSTONE) += mst_fpga.o diff --git a/include/hw/misc/imx2_wdt.h b/include/hw/misc/imx2_wdt.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/misc/imx2_wdt.h @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2017, Impinj, Inc. + * + * i.MX2 Watchdog IP block + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX2_WDT_H +#define IMX2_WDT_H + +#include "hw/sysbus.h" + +#define TYPE_IMX2_WDT "imx2.wdt" +#define IMX2_WDT(obj) OBJECT_CHECK(IMX2WdtState, (obj), TYPE_IMX2_WDT) + +enum IMX2WdtRegisters { + IMX2_WDT_WCR = 0x0000, + IMX2_WDT_REG_NUM = 0x0008 / sizeof(uint16_t) + 1, +}; + + +typedef struct IMX2WdtState { + /* <private> */ + SysBusDevice parent_obj; + + MemoryRegion mmio; +} IMX2WdtState; + +#endif /* IMX7_SNVS_H */ diff --git a/hw/misc/imx2_wdt.c b/hw/misc/imx2_wdt.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/misc/imx2_wdt.c @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2018, Impinj, Inc. + * + * i.MX2 Watchdog IP block + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/bitops.h" +#include "sysemu/watchdog.h" + +#include "hw/misc/imx2_wdt.h" + +#define IMX2_WDT_WCR_WDA BIT(5) /* -> External Reset WDOG_B */ +#define IMX2_WDT_WCR_SRS BIT(4) /* -> Software Reset Signal */ + +static uint64_t imx2_wdt_read(void *opaque, hwaddr addr, + unsigned int size) +{ + return 0; +} + +static void imx2_wdt_write(void *opaque, hwaddr addr, + uint64_t value, unsigned int size) +{ + if (addr == IMX2_WDT_WCR && + (value & (IMX2_WDT_WCR_WDA | IMX2_WDT_WCR_SRS))) { + watchdog_perform_action(); + } +} + +static const MemoryRegionOps imx2_wdt_ops = { + .read = imx2_wdt_read, + .write = imx2_wdt_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the + * real device but in practice there is no reason for a guest + * to access this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx2_wdt_realize(DeviceState *dev, Error **errp) +{ + IMX2WdtState *s = IMX2_WDT(dev); + + memory_region_init_io(&s->mmio, OBJECT(dev), + &imx2_wdt_ops, s, + TYPE_IMX2_WDT".mmio", + IMX2_WDT_REG_NUM * sizeof(uint16_t)); + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio); +} + +static void imx2_wdt_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = imx2_wdt_realize; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); +} + +static const TypeInfo imx2_wdt_info = { + .name = TYPE_IMX2_WDT, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMX2WdtState), + .class_init = imx2_wdt_class_init, +}; + +static WatchdogTimerModel model = { + .wdt_name = "imx2-watchdog", + .wdt_description = "i.MX2 Watchdog", +}; + +static void imx2_wdt_register_type(void) +{ + watchdog_add_model(&model); + type_register_static(&imx2_wdt_info); +} +type_init(imx2_wdt_register_type) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add code to emulate SNVS IP-block. Currently only the bits needed to be able to emulate machine shutdown are implemented. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/Makefile.objs | 1 + include/hw/misc/imx7_snvs.h | 35 +++++++++++++++++++ hw/misc/imx7_snvs.c | 83 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 include/hw/misc/imx7_snvs.h create mode 100644 hw/misc/imx7_snvs.c diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -XXX,XX +XXX,XX @@ obj-$(CONFIG_IMX) += imx6_ccm.o obj-$(CONFIG_IMX) += imx6_src.o obj-$(CONFIG_IMX) += imx7_ccm.o obj-$(CONFIG_IMX) += imx2_wdt.o +obj-$(CONFIG_IMX) += imx7_snvs.o obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o obj-$(CONFIG_MAINSTONE) += mst_fpga.o diff --git a/include/hw/misc/imx7_snvs.h b/include/hw/misc/imx7_snvs.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/misc/imx7_snvs.h @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2017, Impinj, Inc. + * + * i.MX7 SNVS block emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX7_SNVS_H +#define IMX7_SNVS_H + +#include "qemu/bitops.h" +#include "hw/sysbus.h" + + +enum IMX7SNVSRegisters { + SNVS_LPCR = 0x38, + SNVS_LPCR_TOP = BIT(6), + SNVS_LPCR_DP_EN = BIT(5) +}; + +#define TYPE_IMX7_SNVS "imx7.snvs" +#define IMX7_SNVS(obj) OBJECT_CHECK(IMX7SNVSState, (obj), TYPE_IMX7_SNVS) + +typedef struct IMX7SNVSState { + /* <private> */ + SysBusDevice parent_obj; + + MemoryRegion mmio; +} IMX7SNVSState; + +#endif /* IMX7_SNVS_H */ diff --git a/hw/misc/imx7_snvs.c b/hw/misc/imx7_snvs.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/misc/imx7_snvs.c @@ -XXX,XX +XXX,XX @@ +/* + * IMX7 Secure Non-Volatile Storage + * + * Copyright (c) 2018, Impinj, Inc. + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + * Bare minimum emulation code needed to support being able to shut + * down linux guest gracefully. + */ + +#include "qemu/osdep.h" +#include "hw/misc/imx7_snvs.h" +#include "qemu/log.h" +#include "sysemu/sysemu.h" + +static uint64_t imx7_snvs_read(void *opaque, hwaddr offset, unsigned size) +{ + return 0; +} + +static void imx7_snvs_write(void *opaque, hwaddr offset, + uint64_t v, unsigned size) +{ + const uint32_t value = v; + const uint32_t mask = SNVS_LPCR_TOP | SNVS_LPCR_DP_EN; + + if (offset == SNVS_LPCR && ((value & mask) == mask)) { + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } +} + +static const struct MemoryRegionOps imx7_snvs_ops = { + .read = imx7_snvs_read, + .write = imx7_snvs_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the real + * device but in practice there is no reason for a guest to access + * this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx7_snvs_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMX7SNVSState *s = IMX7_SNVS(obj); + + memory_region_init_io(&s->mmio, obj, &imx7_snvs_ops, s, + TYPE_IMX7_SNVS, 0x1000); + + sysbus_init_mmio(sd, &s->mmio); +} + +static void imx7_snvs_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "i.MX7 Secure Non-Volatile Storage Module"; +} + +static const TypeInfo imx7_snvs_info = { + .name = TYPE_IMX7_SNVS, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMX7SNVSState), + .instance_init = imx7_snvs_init, + .class_init = imx7_snvs_class_init, +}; + +static void imx7_snvs_register_type(void) +{ + type_register_static(&imx7_snvs_info); +} +type_init(imx7_snvs_register_type) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/intc/Makefile.objs | 2 +- include/hw/intc/imx_gpcv2.h | 22 ++++++++ hw/intc/imx_gpcv2.c | 125 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 148 insertions(+), 1 deletion(-) create mode 100644 include/hw/intc/imx_gpcv2.h create mode 100644 hw/intc/imx_gpcv2.c diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/Makefile.objs +++ b/hw/intc/Makefile.objs @@ -XXX,XX +XXX,XX @@ common-obj-$(CONFIG_XILINX) += xilinx_intc.o common-obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-pmu-iomod-intc.o common-obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp-ipi.o common-obj-$(CONFIG_ETRAXFS) += etraxfs_pic.o -common-obj-$(CONFIG_IMX) += imx_avic.o +common-obj-$(CONFIG_IMX) += imx_avic.o imx_gpcv2.o common-obj-$(CONFIG_LM32) += lm32_pic.o common-obj-$(CONFIG_REALVIEW) += realview_gic.o common-obj-$(CONFIG_SLAVIO) += slavio_intctl.o diff --git a/include/hw/intc/imx_gpcv2.h b/include/hw/intc/imx_gpcv2.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/intc/imx_gpcv2.h @@ -XXX,XX +XXX,XX @@ +#ifndef IMX_GPCV2_H +#define IMX_GPCV2_H + +#include "hw/sysbus.h" + +enum IMXGPCv2Registers { + GPC_NUM = 0xE00 / sizeof(uint32_t), +}; + +typedef struct IMXGPCv2State { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion iomem; + uint32_t regs[GPC_NUM]; +} IMXGPCv2State; + +#define TYPE_IMX_GPCV2 "imx-gpcv2" +#define IMX_GPCV2(obj) OBJECT_CHECK(IMXGPCv2State, (obj), TYPE_IMX_GPCV2) + +#endif /* IMX_GPCV2_H */ diff --git a/hw/intc/imx_gpcv2.c b/hw/intc/imx_gpcv2.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/intc/imx_gpcv2.c @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2018, Impinj, Inc. + * + * i.MX7 GPCv2 block emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/intc/imx_gpcv2.h" +#include "qemu/log.h" + +#define GPC_PU_PGC_SW_PUP_REQ 0x0f8 +#define GPC_PU_PGC_SW_PDN_REQ 0x104 + +#define USB_HSIC_PHY_SW_Pxx_REQ BIT(4) +#define USB_OTG2_PHY_SW_Pxx_REQ BIT(3) +#define USB_OTG1_PHY_SW_Pxx_REQ BIT(2) +#define PCIE_PHY_SW_Pxx_REQ BIT(1) +#define MIPI_PHY_SW_Pxx_REQ BIT(0) + + +static void imx_gpcv2_reset(DeviceState *dev) +{ + IMXGPCv2State *s = IMX_GPCV2(dev); + + memset(s->regs, 0, sizeof(s->regs)); +} + +static uint64_t imx_gpcv2_read(void *opaque, hwaddr offset, + unsigned size) +{ + IMXGPCv2State *s = opaque; + + return s->regs[offset / sizeof(uint32_t)]; +} + +static void imx_gpcv2_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ + IMXGPCv2State *s = opaque; + const size_t idx = offset / sizeof(uint32_t); + + s->regs[idx] = value; + + /* + * Real HW will clear those bits once as a way to indicate that + * power up request is complete + */ + if (offset == GPC_PU_PGC_SW_PUP_REQ || + offset == GPC_PU_PGC_SW_PDN_REQ) { + s->regs[idx] &= ~(USB_HSIC_PHY_SW_Pxx_REQ | + USB_OTG2_PHY_SW_Pxx_REQ | + USB_OTG1_PHY_SW_Pxx_REQ | + PCIE_PHY_SW_Pxx_REQ | + MIPI_PHY_SW_Pxx_REQ); + } +} + +static const struct MemoryRegionOps imx_gpcv2_ops = { + .read = imx_gpcv2_read, + .write = imx_gpcv2_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the real + * device but in practice there is no reason for a guest to access + * this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx_gpcv2_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMXGPCv2State *s = IMX_GPCV2(obj); + + memory_region_init_io(&s->iomem, + obj, + &imx_gpcv2_ops, + s, + TYPE_IMX_GPCV2 ".iomem", + sizeof(s->regs)); + sysbus_init_mmio(sd, &s->iomem); +} + +static const VMStateDescription vmstate_imx_gpcv2 = { + .name = TYPE_IMX_GPCV2, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, IMXGPCv2State, GPC_NUM), + VMSTATE_END_OF_LIST() + }, +}; + +static void imx_gpcv2_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = imx_gpcv2_reset; + dc->vmsd = &vmstate_imx_gpcv2; + dc->desc = "i.MX GPCv2 Module"; +} + +static const TypeInfo imx_gpcv2_info = { + .name = TYPE_IMX_GPCV2, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMXGPCv2State), + .instance_init = imx_gpcv2_init, + .class_init = imx_gpcv2_class_init, +}; + +static void imx_gpcv2_register_type(void) +{ + type_register_static(&imx_gpcv2_info); +} +type_init(imx_gpcv2_register_type) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/timer/imx_gpt.h | 1 + hw/timer/imx_gpt.c | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/include/hw/timer/imx_gpt.h b/include/hw/timer/imx_gpt.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/timer/imx_gpt.h +++ b/include/hw/timer/imx_gpt.h @@ -XXX,XX +XXX,XX @@ #define TYPE_IMX25_GPT "imx25.gpt" #define TYPE_IMX31_GPT "imx31.gpt" #define TYPE_IMX6_GPT "imx6.gpt" +#define TYPE_IMX7_GPT "imx7.gpt" #define TYPE_IMX_GPT TYPE_IMX25_GPT diff --git a/hw/timer/imx_gpt.c b/hw/timer/imx_gpt.c index XXXXXXX..XXXXXXX 100644 --- a/hw/timer/imx_gpt.c +++ b/hw/timer/imx_gpt.c @@ -XXX,XX +XXX,XX @@ static const IMXClk imx6_gpt_clocks[] = { CLK_HIGH, /* 111 reference clock */ }; +static const IMXClk imx7_gpt_clocks[] = { + CLK_NONE, /* 000 No clock source */ + CLK_IPG, /* 001 ipg_clk, 532MHz*/ + CLK_IPG_HIGH, /* 010 ipg_clk_highfreq */ + CLK_EXT, /* 011 External clock */ + CLK_32k, /* 100 ipg_clk_32k */ + CLK_HIGH, /* 101 reference clock */ + CLK_NONE, /* 110 not defined */ + CLK_NONE, /* 111 not defined */ +}; + static void imx_gpt_set_freq(IMXGPTState *s) { uint32_t clksrc = extract32(s->cr, GPT_CR_CLKSRC_SHIFT, 3); @@ -XXX,XX +XXX,XX @@ static void imx6_gpt_init(Object *obj) s->clocks = imx6_gpt_clocks; } +static void imx7_gpt_init(Object *obj) +{ + IMXGPTState *s = IMX_GPT(obj); + + s->clocks = imx7_gpt_clocks; +} + static const TypeInfo imx25_gpt_info = { .name = TYPE_IMX25_GPT, .parent = TYPE_SYS_BUS_DEVICE, @@ -XXX,XX +XXX,XX @@ static const TypeInfo imx6_gpt_info = { .instance_init = imx6_gpt_init, }; +static const TypeInfo imx7_gpt_info = { + .name = TYPE_IMX7_GPT, + .parent = TYPE_IMX25_GPT, + .instance_init = imx7_gpt_init, +}; + static void imx_gpt_register_types(void) { type_register_static(&imx25_gpt_info); type_register_static(&imx31_gpt_info); type_register_static(&imx6_gpt_info); + type_register_static(&imx7_gpt_info); } type_init(imx_gpt_register_types) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add minimal code needed to allow upstream Linux guest to boot. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/Makefile.objs | 1 + include/hw/misc/imx7_gpr.h | 28 ++++++++++ hw/misc/imx7_gpr.c | 124 +++++++++++++++++++++++++++++++++++++++++++++ hw/misc/trace-events | 4 ++ 4 files changed, 157 insertions(+) create mode 100644 include/hw/misc/imx7_gpr.h create mode 100644 hw/misc/imx7_gpr.c diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -XXX,XX +XXX,XX @@ obj-$(CONFIG_IMX) += imx6_src.o obj-$(CONFIG_IMX) += imx7_ccm.o obj-$(CONFIG_IMX) += imx2_wdt.o obj-$(CONFIG_IMX) += imx7_snvs.o +obj-$(CONFIG_IMX) += imx7_gpr.o obj-$(CONFIG_MILKYMIST) += milkymist-hpdmc.o obj-$(CONFIG_MILKYMIST) += milkymist-pfpu.o obj-$(CONFIG_MAINSTONE) += mst_fpga.o diff --git a/include/hw/misc/imx7_gpr.h b/include/hw/misc/imx7_gpr.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/misc/imx7_gpr.h @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2017, Impinj, Inc. + * + * i.MX7 GPR IP block emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX7_GPR_H +#define IMX7_GPR_H + +#include "qemu/bitops.h" +#include "hw/sysbus.h" + +#define TYPE_IMX7_GPR "imx7.gpr" +#define IMX7_GPR(obj) OBJECT_CHECK(IMX7GPRState, (obj), TYPE_IMX7_GPR) + +typedef struct IMX7GPRState { + /* <private> */ + SysBusDevice parent_obj; + + MemoryRegion mmio; +} IMX7GPRState; + +#endif /* IMX7_GPR_H */ diff --git a/hw/misc/imx7_gpr.c b/hw/misc/imx7_gpr.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/misc/imx7_gpr.c @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2018, Impinj, Inc. + * + * i.MX7 GPR IP block emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + * Bare minimum emulation code needed to support being able to shut + * down linux guest gracefully. + */ + +#include "qemu/osdep.h" +#include "hw/misc/imx7_gpr.h" +#include "qemu/log.h" +#include "sysemu/sysemu.h" + +#include "trace.h" + +enum IMX7GPRRegisters { + IOMUXC_GPR0 = 0x00, + IOMUXC_GPR1 = 0x04, + IOMUXC_GPR2 = 0x08, + IOMUXC_GPR3 = 0x0c, + IOMUXC_GPR4 = 0x10, + IOMUXC_GPR5 = 0x14, + IOMUXC_GPR6 = 0x18, + IOMUXC_GPR7 = 0x1c, + IOMUXC_GPR8 = 0x20, + IOMUXC_GPR9 = 0x24, + IOMUXC_GPR10 = 0x28, + IOMUXC_GPR11 = 0x2c, + IOMUXC_GPR12 = 0x30, + IOMUXC_GPR13 = 0x34, + IOMUXC_GPR14 = 0x38, + IOMUXC_GPR15 = 0x3c, + IOMUXC_GPR16 = 0x40, + IOMUXC_GPR17 = 0x44, + IOMUXC_GPR18 = 0x48, + IOMUXC_GPR19 = 0x4c, + IOMUXC_GPR20 = 0x50, + IOMUXC_GPR21 = 0x54, + IOMUXC_GPR22 = 0x58, +}; + +#define IMX7D_GPR1_IRQ_MASK BIT(12) +#define IMX7D_GPR1_ENET1_TX_CLK_SEL_MASK BIT(13) +#define IMX7D_GPR1_ENET2_TX_CLK_SEL_MASK BIT(14) +#define IMX7D_GPR1_ENET_TX_CLK_SEL_MASK (0x3 << 13) +#define IMX7D_GPR1_ENET1_CLK_DIR_MASK BIT(17) +#define IMX7D_GPR1_ENET2_CLK_DIR_MASK BIT(18) +#define IMX7D_GPR1_ENET_CLK_DIR_MASK (0x3 << 17) + +#define IMX7D_GPR5_CSI_MUX_CONTROL_MIPI BIT(4) +#define IMX7D_GPR12_PCIE_PHY_REFCLK_SEL BIT(5) +#define IMX7D_GPR22_PCIE_PHY_PLL_LOCKED BIT(31) + + +static uint64_t imx7_gpr_read(void *opaque, hwaddr offset, unsigned size) +{ + trace_imx7_gpr_read(offset); + + if (offset == IOMUXC_GPR22) { + return IMX7D_GPR22_PCIE_PHY_PLL_LOCKED; + } + + return 0; +} + +static void imx7_gpr_write(void *opaque, hwaddr offset, + uint64_t v, unsigned size) +{ + trace_imx7_gpr_write(offset, v); +} + +static const struct MemoryRegionOps imx7_gpr_ops = { + .read = imx7_gpr_read, + .write = imx7_gpr_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the + * real device but in practice there is no reason for a guest + * to access this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void imx7_gpr_init(Object *obj) +{ + SysBusDevice *sd = SYS_BUS_DEVICE(obj); + IMX7GPRState *s = IMX7_GPR(obj); + + memory_region_init_io(&s->mmio, obj, &imx7_gpr_ops, s, + TYPE_IMX7_GPR, 64 * 1024); + sysbus_init_mmio(sd, &s->mmio); +} + +static void imx7_gpr_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->desc = "i.MX7 General Purpose Registers Module"; +} + +static const TypeInfo imx7_gpr_info = { + .name = TYPE_IMX7_GPR, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IMX7GPRState), + .instance_init = imx7_gpr_init, + .class_init = imx7_gpr_class_init, +}; + +static void imx7_gpr_register_type(void) +{ + type_register_static(&imx7_gpr_info); +} +type_init(imx7_gpr_register_type) diff --git a/hw/misc/trace-events b/hw/misc/trace-events index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/trace-events +++ b/hw/misc/trace-events @@ -XXX,XX +XXX,XX @@ mps2_scc_cfg_read(unsigned function, unsigned device, uint32_t value) "MPS2 SCC msf2_sysreg_write(uint64_t offset, uint32_t val, uint32_t prev) "msf2-sysreg write: addr 0x%08" HWADDR_PRIx " data 0x%" PRIx32 " prev 0x%" PRIx32 msf2_sysreg_read(uint64_t offset, uint32_t val) "msf2-sysreg read: addr 0x%08" HWADDR_PRIx " data 0x%08" PRIx32 msf2_sysreg_write_pll_status(void) "Invalid write to read only PLL status register" + +#hw/misc/imx7_gpr.c +imx7_gpr_read(uint64_t offset) "addr 0x%08" HWADDR_PRIx +imx7_gpr_write(uint64_t offset, uint64_t value) "addr 0x%08" HWADDR_PRIx "value 0x%08" HWADDR_PRIx -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Add code to emulate Chipidea USB IP (used in i.MX SoCs). Tested to work against: -usb -drive if=none,id=stick,file=usb.img,format=raw -device \ usb-storage,bus=usb-bus.0,drive=stick Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/usb/Makefile.objs | 1 + include/hw/usb/chipidea.h | 16 +++++ hw/usb/chipidea.c | 176 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 193 insertions(+) create mode 100644 include/hw/usb/chipidea.h create mode 100644 hw/usb/chipidea.c diff --git a/hw/usb/Makefile.objs b/hw/usb/Makefile.objs index XXXXXXX..XXXXXXX 100644 --- a/hw/usb/Makefile.objs +++ b/hw/usb/Makefile.objs @@ -XXX,XX +XXX,XX @@ common-obj-$(CONFIG_USB_XHCI_NEC) += hcd-xhci-nec.o common-obj-$(CONFIG_USB_MUSB) += hcd-musb.o obj-$(CONFIG_TUSB6010) += tusb6010.o +obj-$(CONFIG_IMX) += chipidea.o # emulated usb devices common-obj-$(CONFIG_USB) += dev-hub.o diff --git a/include/hw/usb/chipidea.h b/include/hw/usb/chipidea.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/usb/chipidea.h @@ -XXX,XX +XXX,XX @@ +#ifndef CHIPIDEA_H +#define CHIPIDEA_H + +#include "hw/usb/hcd-ehci.h" + +typedef struct ChipideaState { + /*< private >*/ + EHCISysBusState parent_obj; + + MemoryRegion iomem[3]; +} ChipideaState; + +#define TYPE_CHIPIDEA "usb-chipidea" +#define CHIPIDEA(obj) OBJECT_CHECK(ChipideaState, (obj), TYPE_CHIPIDEA) + +#endif /* CHIPIDEA_H */ diff --git a/hw/usb/chipidea.c b/hw/usb/chipidea.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/usb/chipidea.c @@ -XXX,XX +XXX,XX @@ +/* + * Copyright (c) 2018, Impinj, Inc. + * + * Chipidea USB block emulation code + * + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/usb/hcd-ehci.h" +#include "hw/usb/chipidea.h" +#include "qemu/log.h" + +enum { + CHIPIDEA_USBx_DCIVERSION = 0x000, + CHIPIDEA_USBx_DCCPARAMS = 0x004, + CHIPIDEA_USBx_DCCPARAMS_HC = BIT(8), +}; + +static uint64_t chipidea_read(void *opaque, hwaddr offset, + unsigned size) +{ + return 0; +} + +static void chipidea_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ +} + +static const struct MemoryRegionOps chipidea_ops = { + .read = chipidea_read, + .write = chipidea_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the + * real device but in practice there is no reason for a guest + * to access this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static uint64_t chipidea_dc_read(void *opaque, hwaddr offset, + unsigned size) +{ + switch (offset) { + case CHIPIDEA_USBx_DCIVERSION: + return 0x1; + case CHIPIDEA_USBx_DCCPARAMS: + /* + * Real hardware (at least i.MX7) will also report the + * controller as "Device Capable" (and 8 supported endpoints), + * but there doesn't seem to be much point in doing so, since + * we don't emulate that part. + */ + return CHIPIDEA_USBx_DCCPARAMS_HC; + } + + return 0; +} + +static void chipidea_dc_write(void *opaque, hwaddr offset, + uint64_t value, unsigned size) +{ +} + +static const struct MemoryRegionOps chipidea_dc_ops = { + .read = chipidea_dc_read, + .write = chipidea_dc_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .impl = { + /* + * Our device would not work correctly if the guest was doing + * unaligned access. This might not be a limitation on the real + * device but in practice there is no reason for a guest to access + * this device unaligned. + */ + .min_access_size = 4, + .max_access_size = 4, + .unaligned = false, + }, +}; + +static void chipidea_init(Object *obj) +{ + EHCIState *ehci = &SYS_BUS_EHCI(obj)->ehci; + ChipideaState *ci = CHIPIDEA(obj); + int i; + + for (i = 0; i < ARRAY_SIZE(ci->iomem); i++) { + const struct { + const char *name; + hwaddr offset; + uint64_t size; + const struct MemoryRegionOps *ops; + } regions[ARRAY_SIZE(ci->iomem)] = { + /* + * Registers located between offsets 0x000 and 0xFC + */ + { + .name = TYPE_CHIPIDEA ".misc", + .offset = 0x000, + .size = 0x100, + .ops = &chipidea_ops, + }, + /* + * Registers located between offsets 0x1A4 and 0x1DC + */ + { + .name = TYPE_CHIPIDEA ".endpoints", + .offset = 0x1A4, + .size = 0x1DC - 0x1A4 + 4, + .ops = &chipidea_ops, + }, + /* + * USB_x_DCIVERSION and USB_x_DCCPARAMS + */ + { + .name = TYPE_CHIPIDEA ".dc", + .offset = 0x120, + .size = 8, + .ops = &chipidea_dc_ops, + }, + }; + + memory_region_init_io(&ci->iomem[i], + obj, + regions[i].ops, + ci, + regions[i].name, + regions[i].size); + + memory_region_add_subregion(&ehci->mem, + regions[i].offset, + &ci->iomem[i]); + } +} + +static void chipidea_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(klass); + + /* + * Offsets used were taken from i.MX7Dual Applications Processor + * Reference Manual, Rev 0.1, p. 3177, Table 11-59 + */ + sec->capsbase = 0x100; + sec->opregbase = 0x140; + sec->portnr = 1; + + set_bit(DEVICE_CATEGORY_USB, dc->categories); + dc->desc = "Chipidea USB Module"; +} + +static const TypeInfo chipidea_info = { + .name = TYPE_CHIPIDEA, + .parent = TYPE_SYS_BUS_EHCI, + .instance_size = sizeof(ChipideaState), + .instance_init = chipidea_init, + .class_init = chipidea_class_init, +}; + +static void chipidea_register_type(void) +{ + type_register_static(&chipidea_info); +} +type_init(chipidea_register_type) -- 2.16.1 From: Andrey Smirnov <andrew.smirnov@gmail.com> Move virt's PSCI DT fixup code to arm/boot.c and set this fixup to happen automatically for every board that doesn't mark "psci-conduit" as disabled. This way emulated boards other than "virt" that rely on PSIC for SMP could benefit from that code. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/arm/boot.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/arm/virt.c | 61 ------------------------------------------------------- 2 files changed, 65 insertions(+), 61 deletions(-) diff --git a/hw/arm/boot.c b/hw/arm/boot.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -XXX,XX +XXX,XX @@ static void set_kernel_args_old(const struct arm_boot_info *info) } } +static void fdt_add_psci_node(void *fdt) +{ + uint32_t cpu_suspend_fn; + uint32_t cpu_off_fn; + uint32_t cpu_on_fn; + uint32_t migrate_fn; + ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0)); + const char *psci_method; + int64_t psci_conduit; + + psci_conduit = object_property_get_int(OBJECT(armcpu), + "psci-conduit", + &error_abort); + switch (psci_conduit) { + case QEMU_PSCI_CONDUIT_DISABLED: + return; + case QEMU_PSCI_CONDUIT_HVC: + psci_method = "hvc"; + break; + case QEMU_PSCI_CONDUIT_SMC: + psci_method = "smc"; + break; + default: + g_assert_not_reached(); + } + + qemu_fdt_add_subnode(fdt, "/psci"); + if (armcpu->psci_version == 2) { + const char comp[] = "arm,psci-0.2\0arm,psci"; + qemu_fdt_setprop(fdt, "/psci", "compatible", comp, sizeof(comp)); + + cpu_off_fn = QEMU_PSCI_0_2_FN_CPU_OFF; + if (arm_feature(&armcpu->env, ARM_FEATURE_AARCH64)) { + cpu_suspend_fn = QEMU_PSCI_0_2_FN64_CPU_SUSPEND; + cpu_on_fn = QEMU_PSCI_0_2_FN64_CPU_ON; + migrate_fn = QEMU_PSCI_0_2_FN64_MIGRATE; + } else { + cpu_suspend_fn = QEMU_PSCI_0_2_FN_CPU_SUSPEND; + cpu_on_fn = QEMU_PSCI_0_2_FN_CPU_ON; + migrate_fn = QEMU_PSCI_0_2_FN_MIGRATE; + } + } else { + qemu_fdt_setprop_string(fdt, "/psci", "compatible", "arm,psci"); + + cpu_suspend_fn = QEMU_PSCI_0_1_FN_CPU_SUSPEND; + cpu_off_fn = QEMU_PSCI_0_1_FN_CPU_OFF; + cpu_on_fn = QEMU_PSCI_0_1_FN_CPU_ON; + migrate_fn = QEMU_PSCI_0_1_FN_MIGRATE; + } + + /* We adopt the PSCI spec's nomenclature, and use 'conduit' to refer + * to the instruction that should be used to invoke PSCI functions. + * However, the device tree binding uses 'method' instead, so that is + * what we should use here. + */ + qemu_fdt_setprop_string(fdt, "/psci", "method", psci_method); + + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_suspend", cpu_suspend_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_off", cpu_off_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_on", cpu_on_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn); +} + /** * load_dtb() - load a device tree binary image into memory * @addr: the address to load the image at @@ -XXX,XX +XXX,XX @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo, } } + fdt_add_psci_node(fdt); + if (binfo->modify_dtb) { binfo->modify_dtb(binfo, fdt); } diff --git a/hw/arm/virt.c b/hw/arm/virt.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -XXX,XX +XXX,XX @@ static void create_fdt(VirtMachineState *vms) } } -static void fdt_add_psci_node(const VirtMachineState *vms) -{ - uint32_t cpu_suspend_fn; - uint32_t cpu_off_fn; - uint32_t cpu_on_fn; - uint32_t migrate_fn; - void *fdt = vms->fdt; - ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0)); - const char *psci_method; - - switch (vms->psci_conduit) { - case QEMU_PSCI_CONDUIT_DISABLED: - return; - case QEMU_PSCI_CONDUIT_HVC: - psci_method = "hvc"; - break; - case QEMU_PSCI_CONDUIT_SMC: - psci_method = "smc"; - break; - default: - g_assert_not_reached(); - } - - qemu_fdt_add_subnode(fdt, "/psci"); - if (armcpu->psci_version == 2) { - const char comp[] = "arm,psci-0.2\0arm,psci"; - qemu_fdt_setprop(fdt, "/psci", "compatible", comp, sizeof(comp)); - - cpu_off_fn = QEMU_PSCI_0_2_FN_CPU_OFF; - if (arm_feature(&armcpu->env, ARM_FEATURE_AARCH64)) { - cpu_suspend_fn = QEMU_PSCI_0_2_FN64_CPU_SUSPEND; - cpu_on_fn = QEMU_PSCI_0_2_FN64_CPU_ON; - migrate_fn = QEMU_PSCI_0_2_FN64_MIGRATE; - } else { - cpu_suspend_fn = QEMU_PSCI_0_2_FN_CPU_SUSPEND; - cpu_on_fn = QEMU_PSCI_0_2_FN_CPU_ON; - migrate_fn = QEMU_PSCI_0_2_FN_MIGRATE; - } - } else { - qemu_fdt_setprop_string(fdt, "/psci", "compatible", "arm,psci"); - - cpu_suspend_fn = QEMU_PSCI_0_1_FN_CPU_SUSPEND; - cpu_off_fn = QEMU_PSCI_0_1_FN_CPU_OFF; - cpu_on_fn = QEMU_PSCI_0_1_FN_CPU_ON; - migrate_fn = QEMU_PSCI_0_1_FN_MIGRATE; - } - - /* We adopt the PSCI spec's nomenclature, and use 'conduit' to refer - * to the instruction that should be used to invoke PSCI functions. - * However, the device tree binding uses 'method' instead, so that is - * what we should use here. - */ - qemu_fdt_setprop_string(fdt, "/psci", "method", psci_method); - - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_suspend", cpu_suspend_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_off", cpu_off_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_on", cpu_on_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn); -} - static void fdt_add_timer_nodes(const VirtMachineState *vms) { /* On real hardware these interrupts are level-triggered. @@ -XXX,XX +XXX,XX @@ static void machvirt_init(MachineState *machine) } fdt_add_timer_nodes(vms); fdt_add_cpu_nodes(vms); - fdt_add_psci_node(vms); memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram", machine->ram_size); -- 2.16.1 From: Richard Henderson <richard.henderson@linaro.org> Change vfp.regs as a uint64_t to vfp.zregs as an ARMVectorReg. The previous patches have made the change in representation relatively painless. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20180123035349.24538-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 59 +++++++++++++++++++++++++++++++--------------- target/arm/machine.c | 35 ++++++++++++++++++++++++++- target/arm/translate-a64.c | 8 +++---- target/arm/translate.c | 7 +++--- 4 files changed, 81 insertions(+), 28 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ typedef struct { uint32_t base_mask; } TCR; +/* Define a maximum sized vector register. + * For 32-bit, this is a 128-bit NEON/AdvSIMD register. + * For 64-bit, this is a 2048-bit SVE register. + * + * Note that the mapping between S, D, and Q views of the register bank + * differs between AArch64 and AArch32. + * In AArch32: + * Qn = regs[n].d[1]:regs[n].d[0] + * Dn = regs[n / 2].d[n & 1] + * Sn = regs[n / 4].d[n % 4 / 2], + * bits 31..0 for even n, and bits 63..32 for odd n + * (and regs[16] to regs[31] are inaccessible) + * In AArch64: + * Zn = regs[n].d[*] + * Qn = regs[n].d[1]:regs[n].d[0] + * Dn = regs[n].d[0] + * Sn = regs[n].d[0] bits 31..0 + * + * This corresponds to the architecturally defined mapping between + * the two execution states, and means we do not need to explicitly + * map these registers when changing states. + * + * Align the data for use with TCG host vector operations. + */ + +#ifdef TARGET_AARCH64 +# define ARM_MAX_VQ 16 +#else +# define ARM_MAX_VQ 1 +#endif + +typedef struct ARMVectorReg { + uint64_t d[2 * ARM_MAX_VQ] QEMU_ALIGNED(16); +} ARMVectorReg; + + typedef struct CPUARMState { /* Regs for current mode. */ uint32_t regs[16]; @@ -XXX,XX +XXX,XX @@ typedef struct CPUARMState { /* VFP coprocessor state. */ struct { - /* VFP/Neon register state. Note that the mapping between S, D and Q - * views of the register bank differs between AArch64 and AArch32: - * In AArch32: - * Qn = regs[2n+1]:regs[2n] - * Dn = regs[n] - * Sn = regs[n/2] bits 31..0 for even n, and bits 63..32 for odd n - * (and regs[32] to regs[63] are inaccessible) - * In AArch64: - * Qn = regs[2n+1]:regs[2n] - * Dn = regs[2n] - * Sn = regs[2n] bits 31..0 - * This corresponds to the architecturally defined mapping between - * the two execution states, and means we do not need to explicitly - * map these registers when changing states. - */ - uint64_t regs[64] QEMU_ALIGNED(16); + ARMVectorReg zregs[32]; uint32_t xregs[16]; /* We store these fpcsr fields separately for convenience. */ @@ -XXX,XX +XXX,XX @@ static inline void *arm_get_el_change_hook_opaque(ARMCPU *cpu) */ static inline uint64_t *aa32_vfp_dreg(CPUARMState *env, unsigned regno) { - return &env->vfp.regs[regno]; + return &env->vfp.zregs[regno >> 1].d[regno & 1]; } /** @@ -XXX,XX +XXX,XX @@ static inline uint64_t *aa32_vfp_dreg(CPUARMState *env, unsigned regno) */ static inline uint64_t *aa32_vfp_qreg(CPUARMState *env, unsigned regno) { - return &env->vfp.regs[2 * regno]; + return &env->vfp.zregs[regno].d[0]; } /** @@ -XXX,XX +XXX,XX @@ static inline uint64_t *aa32_vfp_qreg(CPUARMState *env, unsigned regno) */ static inline uint64_t *aa64_vfp_qreg(CPUARMState *env, unsigned regno) { - return &env->vfp.regs[2 * regno]; + return &env->vfp.zregs[regno].d[0]; } #endif diff --git a/target/arm/machine.c b/target/arm/machine.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/machine.c +++ b/target/arm/machine.c @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_vfp = { .minimum_version_id = 3, .needed = vfp_needed, .fields = (VMStateField[]) { - VMSTATE_UINT64_ARRAY(env.vfp.regs, ARMCPU, 64), + /* For compatibility, store Qn out of Zn here. */ + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[0].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[1].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[2].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[3].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[4].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[5].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[6].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[7].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[8].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[9].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[10].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[11].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[12].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[13].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[14].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[15].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[16].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[17].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[18].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[19].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[20].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[21].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[22].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[23].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[24].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[25].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[26].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[27].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[28].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[29].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[30].d, ARMCPU, 0, 2), + VMSTATE_UINT64_SUB_ARRAY(env.vfp.zregs[31].d, ARMCPU, 0, 2), + /* The xregs array is a little awkward because element 1 (FPSCR) * requires a specific accessor, so we have to split it up in * the vmstate: diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static inline int vec_reg_offset(DisasContext *s, int regno, { int offs = 0; #ifdef HOST_WORDS_BIGENDIAN - /* This is complicated slightly because vfp.regs[2n] is - * still the low half and vfp.regs[2n+1] the high half + /* This is complicated slightly because vfp.zregs[n].d[0] is + * still the low half and vfp.zregs[n].d[1] the high half * of the 128 bit vector, even on big endian systems. * Calculate the offset assuming a fully bigendian 128 bits, * then XOR to account for the order of the two 64 bit halves. @@ -XXX,XX +XXX,XX @@ static inline int vec_reg_offset(DisasContext *s, int regno, #else offs += element * (1 << size); #endif - offs += offsetof(CPUARMState, vfp.regs[regno * 2]); + offs += offsetof(CPUARMState, vfp.zregs[regno]); assert_fp_access_checked(s); return offs; } @@ -XXX,XX +XXX,XX @@ static inline int vec_reg_offset(DisasContext *s, int regno, static inline int vec_full_reg_offset(DisasContext *s, int regno) { assert_fp_access_checked(s); - return offsetof(CPUARMState, vfp.regs[regno * 2]); + return offsetof(CPUARMState, vfp.zregs[regno]); } /* Return a newly allocated pointer to the vector register. */ diff --git a/target/arm/translate.c b/target/arm/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -XXX,XX +XXX,XX @@ static inline void gen_vfp_st(DisasContext *s, int dp, TCGv_i32 addr) } } -static inline long -vfp_reg_offset (int dp, int reg) +static inline long vfp_reg_offset(bool dp, unsigned reg) { if (dp) { - return offsetof(CPUARMState, vfp.regs[reg]); + return offsetof(CPUARMState, vfp.zregs[reg >> 1].d[reg & 1]); } else { - long ofs = offsetof(CPUARMState, vfp.regs[reg >> 1]); + long ofs = offsetof(CPUARMState, vfp.zregs[reg >> 2].d[(reg >> 1) & 1]); if (reg & 1) { ofs += offsetof(CPU_DoubleU, l.upper); } else { -- 2.16.1 From: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20180123035349.24538-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ typedef struct ARMVectorReg { uint64_t d[2 * ARM_MAX_VQ] QEMU_ALIGNED(16); } ARMVectorReg; +/* In AArch32 mode, predicate registers do not exist at all. */ +#ifdef TARGET_AARCH64 +typedef struct ARMPredicateReg { + uint64_t p[2 * ARM_MAX_VQ / 8] QEMU_ALIGNED(16); +} ARMPredicateReg; +#endif + typedef struct CPUARMState { /* Regs for current mode. */ @@ -XXX,XX +XXX,XX @@ typedef struct CPUARMState { struct { ARMVectorReg zregs[32]; +#ifdef TARGET_AARCH64 + /* Store FFR as pregs[16] to make it easier to treat as any other. */ + ARMPredicateReg pregs[17]; +#endif + uint32_t xregs[16]; /* We store these fpcsr fields separately for convenience. */ int vec_len; -- 2.16.1 From: Richard Henderson <richard.henderson@linaro.org> Save the high parts of the Zregs and all of the Pregs. The ZCR_ELx registers are migrated via the CP mechanism. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20180123035349.24538-4-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/machine.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/target/arm/machine.c b/target/arm/machine.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/machine.c +++ b/target/arm/machine.c @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_iwmmxt = { } }; +#ifdef TARGET_AARCH64 +/* The expression ARM_MAX_VQ - 2 is 0 for pure AArch32 build, + * and ARMPredicateReg is actively empty. This triggers errors + * in the expansion of the VMSTATE macros. + */ + +static bool sve_needed(void *opaque) +{ + ARMCPU *cpu = opaque; + CPUARMState *env = &cpu->env; + + return arm_feature(env, ARM_FEATURE_SVE); +} + +/* The first two words of each Zreg is stored in VFP state. */ +static const VMStateDescription vmstate_zreg_hi_reg = { + .name = "cpu/sve/zreg_hi", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT64_SUB_ARRAY(d, ARMVectorReg, 2, ARM_MAX_VQ - 2), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_preg_reg = { + .name = "cpu/sve/preg", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT64_ARRAY(p, ARMPredicateReg, 2 * ARM_MAX_VQ / 8), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_sve = { + .name = "cpu/sve", + .version_id = 1, + .minimum_version_id = 1, + .needed = sve_needed, + .fields = (VMStateField[]) { + VMSTATE_STRUCT_ARRAY(env.vfp.zregs, ARMCPU, 32, 0, + vmstate_zreg_hi_reg, ARMVectorReg), + VMSTATE_STRUCT_ARRAY(env.vfp.pregs, ARMCPU, 17, 0, + vmstate_preg_reg, ARMPredicateReg), + VMSTATE_END_OF_LIST() + } +}; +#endif /* AARCH64 */ + static bool m_needed(void *opaque) { ARMCPU *cpu = opaque; @@ -XXX,XX +XXX,XX @@ const VMStateDescription vmstate_arm_cpu = { &vmstate_pmsav7, &vmstate_pmsav8, &vmstate_m_security, +#ifdef TARGET_AARCH64 + &vmstate_sve, +#endif NULL } }; -- 2.16.1 From: Richard Henderson <richard.henderson@linaro.org> Define ZCR_EL[1-3]. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20180123035349.24538-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 5 ++ target/arm/helper.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ typedef struct CPUARMState { */ float_status fp_status; float_status standard_fp_status; + + /* ZCR_EL[1-3] */ + uint64_t zcr_el[4]; } vfp; uint64_t exclusive_addr; uint64_t exclusive_val; @@ -XXX,XX +XXX,XX @@ void pmccntr_sync(CPUARMState *env); #define CPTR_TCPAC (1U << 31) #define CPTR_TTA (1U << 20) #define CPTR_TFP (1U << 10) +#define CPTR_TZ (1U << 8) /* CPTR_EL2 */ +#define CPTR_EZ (1U << 8) /* CPTR_EL3 */ #define MDCR_EPMAD (1U << 21) #define MDCR_EDAD (1U << 20) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo debug_lpae_cp_reginfo[] = { REGINFO_SENTINEL }; +/* Return the exception level to which SVE-disabled exceptions should + * be taken, or 0 if SVE is enabled. + */ +static int sve_exception_el(CPUARMState *env) +{ +#ifndef CONFIG_USER_ONLY + unsigned current_el = arm_current_el(env); + + /* The CPACR.ZEN controls traps to EL1: + * 0, 2 : trap EL0 and EL1 accesses + * 1 : trap only EL0 accesses + * 3 : trap no accesses + */ + switch (extract32(env->cp15.cpacr_el1, 16, 2)) { + default: + if (current_el <= 1) { + /* Trap to PL1, which might be EL1 or EL3 */ + if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) { + return 3; + } + return 1; + } + break; + case 1: + if (current_el == 0) { + return 1; + } + break; + case 3: + break; + } + + /* Similarly for CPACR.FPEN, after having checked ZEN. */ + switch (extract32(env->cp15.cpacr_el1, 20, 2)) { + default: + if (current_el <= 1) { + if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) { + return 3; + } + return 1; + } + break; + case 1: + if (current_el == 0) { + return 1; + } + break; + case 3: + break; + } + + /* CPTR_EL2. Check both TZ and TFP. */ + if (current_el <= 2 + && (env->cp15.cptr_el[2] & (CPTR_TFP | CPTR_TZ)) + && !arm_is_secure_below_el3(env)) { + return 2; + } + + /* CPTR_EL3. Check both EZ and TFP. */ + if (!(env->cp15.cptr_el[3] & CPTR_EZ) + || (env->cp15.cptr_el[3] & CPTR_TFP)) { + return 3; + } +#endif + return 0; +} + +static CPAccessResult zcr_access(CPUARMState *env, const ARMCPRegInfo *ri, + bool isread) +{ + switch (sve_exception_el(env)) { + case 3: + return CP_ACCESS_TRAP_EL3; + case 2: + return CP_ACCESS_TRAP_EL2; + case 1: + return CP_ACCESS_TRAP; + } + return CP_ACCESS_OK; +} + +static void zcr_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + /* Bits other than [3:0] are RAZ/WI. */ + raw_write(env, ri, value & 0xf); +} + +static const ARMCPRegInfo zcr_el1_reginfo = { + .name = "ZCR_EL1", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 2, .opc2 = 0, + .access = PL1_RW, .accessfn = zcr_access, .type = ARM_CP_64BIT, + .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[1]), + .writefn = zcr_write, .raw_writefn = raw_write +}; + +static const ARMCPRegInfo zcr_el2_reginfo = { + .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, + .access = PL2_RW, .accessfn = zcr_access, .type = ARM_CP_64BIT, + .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[2]), + .writefn = zcr_write, .raw_writefn = raw_write +}; + +static const ARMCPRegInfo zcr_no_el2_reginfo = { + .name = "ZCR_EL2", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 2, .opc2 = 0, + .access = PL2_RW, .type = ARM_CP_64BIT, + .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore +}; + +static const ARMCPRegInfo zcr_el3_reginfo = { + .name = "ZCR_EL3", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 2, .opc2 = 0, + .access = PL3_RW, .accessfn = zcr_access, .type = ARM_CP_64BIT, + .fieldoffset = offsetof(CPUARMState, vfp.zcr_el[3]), + .writefn = zcr_write, .raw_writefn = raw_write +}; + void hw_watchpoint_update(ARMCPU *cpu, int n) { CPUARMState *env = &cpu->env; @@ -XXX,XX +XXX,XX @@ void register_cp_regs_for_features(ARMCPU *cpu) } define_one_arm_cp_reg(cpu, &sctlr); } + + if (arm_feature(env, ARM_FEATURE_SVE)) { + define_one_arm_cp_reg(cpu, &zcr_el1_reginfo); + if (arm_feature(env, ARM_FEATURE_EL2)) { + define_one_arm_cp_reg(cpu, &zcr_el2_reginfo); + } else { + define_one_arm_cp_reg(cpu, &zcr_no_el2_reginfo); + } + if (arm_feature(env, ARM_FEATURE_EL3)) { + define_one_arm_cp_reg(cpu, &zcr_el3_reginfo); + } + } } void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu) -- 2.16.1 From: Richard Henderson <richard.henderson@linaro.org> Add both SVE exception state and vector length. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20180123035349.24538-6-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 8 ++++++++ target/arm/translate.h | 2 ++ target/arm/helper.c | 25 ++++++++++++++++++++++++- target/arm/translate-a64.c | 2 ++ 4 files changed, 36 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env) #define ARM_TBFLAG_TBI0_MASK (0x1ull << ARM_TBFLAG_TBI0_SHIFT) #define ARM_TBFLAG_TBI1_SHIFT 1 /* TBI1 for EL0/1 */ #define ARM_TBFLAG_TBI1_MASK (0x1ull << ARM_TBFLAG_TBI1_SHIFT) +#define ARM_TBFLAG_SVEEXC_EL_SHIFT 2 +#define ARM_TBFLAG_SVEEXC_EL_MASK (0x3 << ARM_TBFLAG_SVEEXC_EL_SHIFT) +#define ARM_TBFLAG_ZCR_LEN_SHIFT 4 +#define ARM_TBFLAG_ZCR_LEN_MASK (0xf << ARM_TBFLAG_ZCR_LEN_SHIFT) /* some convenience accessor macros */ #define ARM_TBFLAG_AARCH64_STATE(F) \ @@ -XXX,XX +XXX,XX @@ static inline bool arm_cpu_data_is_big_endian(CPUARMState *env) (((F) & ARM_TBFLAG_TBI0_MASK) >> ARM_TBFLAG_TBI0_SHIFT) #define ARM_TBFLAG_TBI1(F) \ (((F) & ARM_TBFLAG_TBI1_MASK) >> ARM_TBFLAG_TBI1_SHIFT) +#define ARM_TBFLAG_SVEEXC_EL(F) \ + (((F) & ARM_TBFLAG_SVEEXC_EL_MASK) >> ARM_TBFLAG_SVEEXC_EL_SHIFT) +#define ARM_TBFLAG_ZCR_LEN(F) \ + (((F) & ARM_TBFLAG_ZCR_LEN_MASK) >> ARM_TBFLAG_ZCR_LEN_SHIFT) static inline bool bswap_code(bool sctlr_b) { diff --git a/target/arm/translate.h b/target/arm/translate.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -XXX,XX +XXX,XX @@ typedef struct DisasContext { bool tbi1; /* TBI1 for EL0/1, not used for EL2/3 */ bool ns; /* Use non-secure CPREG bank on access */ int fp_excp_el; /* FP exception EL or 0 if enabled */ + int sve_excp_el; /* SVE exception EL or 0 if enabled */ + int sve_len; /* SVE vector length in bytes */ /* Flag indicating that exceptions from secure mode are routed to EL3. */ bool secure_routed_to_el3; bool vfp_enabled; /* FP enabled via FPSCR.EN */ diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc, target_ulong *cs_base, uint32_t *pflags) { ARMMMUIdx mmu_idx = core_to_arm_mmu_idx(env, cpu_mmu_index(env, false)); + int fp_el = fp_exception_el(env); uint32_t flags; if (is_a64(env)) { + int sve_el = sve_exception_el(env); + uint32_t zcr_len; + *pc = env->pc; flags = ARM_TBFLAG_AARCH64_STATE_MASK; /* Get control bits for tagged addresses */ flags |= (arm_regime_tbi0(env, mmu_idx) << ARM_TBFLAG_TBI0_SHIFT); flags |= (arm_regime_tbi1(env, mmu_idx) << ARM_TBFLAG_TBI1_SHIFT); + flags |= sve_el << ARM_TBFLAG_SVEEXC_EL_SHIFT; + + /* If SVE is disabled, but FP is enabled, + then the effective len is 0. */ + if (sve_el != 0 && fp_el == 0) { + zcr_len = 0; + } else { + int current_el = arm_current_el(env); + + zcr_len = env->vfp.zcr_el[current_el <= 1 ? 1 : current_el]; + zcr_len &= 0xf; + if (current_el < 2 && arm_feature(env, ARM_FEATURE_EL2)) { + zcr_len = MIN(zcr_len, 0xf & (uint32_t)env->vfp.zcr_el[2]); + } + if (current_el < 3 && arm_feature(env, ARM_FEATURE_EL3)) { + zcr_len = MIN(zcr_len, 0xf & (uint32_t)env->vfp.zcr_el[3]); + } + } + flags |= zcr_len << ARM_TBFLAG_ZCR_LEN_SHIFT; } else { *pc = env->regs[15]; flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT) @@ -XXX,XX +XXX,XX @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc, if (arm_cpu_data_is_big_endian(env)) { flags |= ARM_TBFLAG_BE_DATA_MASK; } - flags |= fp_exception_el(env) << ARM_TBFLAG_FPEXC_EL_SHIFT; + flags |= fp_el << ARM_TBFLAG_FPEXC_EL_SHIFT; if (arm_v7m_is_handler_mode(env)) { flags |= ARM_TBFLAG_HANDLER_MASK; diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase, dc->user = (dc->current_el == 0); #endif dc->fp_excp_el = ARM_TBFLAG_FPEXC_EL(dc->base.tb->flags); + dc->sve_excp_el = ARM_TBFLAG_SVEEXC_EL(dc->base.tb->flags); + dc->sve_len = (ARM_TBFLAG_ZCR_LEN(dc->base.tb->flags) + 1) * 16; dc->vec_len = 0; dc->vec_stride = 0; dc->cp_regs = arm_cpu->cp_regs; -- 2.16.1 From: Christoffer Dall <christoffer.dall@linaro.org> KVM doesn't support emulating a GICv3 in userspace, only GICv2. We currently attempt this anyway, and as a result a KVM guest doesn't receive interrupts and the user is left wondering why. Report an error to the user if this particular combination is requested. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180201205307.30343-1-christoffer.dall@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/kvm_arm.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/kvm_arm.h +++ b/target/arm/kvm_arm.h @@ -XXX,XX +XXX,XX @@ static inline const char *gicv3_class_name(void) exit(1); #endif } else { + if (kvm_enabled()) { + error_report("Userspace GICv3 is not supported with KVM"); + exit(1); + } return "arm-gicv3"; } } -- 2.16.1 The code where we added the TT instruction was accidentally missing a 'break', which meant that after generating the code to execute the TT we would fall through to 'goto illegal_op' and generate code to take an UNDEF insn. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180206103941.13985-1-peter.maydell@linaro.org --- target/arm/translate.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/arm/translate.c b/target/arm/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -XXX,XX +XXX,XX @@ static void disas_thumb2_insn(DisasContext *s, uint32_t insn) tcg_temp_free_i32(addr); tcg_temp_free_i32(op); store_reg(s, rd, ttresp); + break; } goto illegal_op; } -- 2.16.1 The documentation for the generic loader claims that you can set the PC for a CPU with an option of the form -device loader,cpu-num=0,addr=0x10000004 However if you try this QEMU complains: cpu_num must be specified when setting a program counter This is because we were testing against 0 rather than CPU_NONE. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180205150426.20542-1-peter.maydell@linaro.org --- hw/core/generic-loader.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/core/generic-loader.c b/hw/core/generic-loader.c index XXXXXXX..XXXXXXX 100644 --- a/hw/core/generic-loader.c +++ b/hw/core/generic-loader.c @@ -XXX,XX +XXX,XX @@ static void generic_loader_realize(DeviceState *dev, Error **errp) error_setg(errp, "data can not be specified when setting a " "program counter"); return; - } else if (!s->cpu_num) { + } else if (s->cpu_num == CPU_NONE) { error_setg(errp, "cpu_num must be specified when setting a " "program counter"); return; -- 2.16.1 First pullreq for 6.0: mostly my v8.1M work, plus some other bits and pieces. (I still have a lot of stuff in my to-review folder, which I may or may not get to before the Christmas break...) thanks -- PMM The following changes since commit 5e7b204dbfae9a562fc73684986f936b97f63877: Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging (2020-12-09 20:08:54 +0000) are available in the Git repository at: https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20201210 for you to fetch changes up to 71f916be1c7e9ede0e37d9cabc781b5a9e8638ff: hw/arm/armv7m: Correct typo in QOM object name (2020-12-10 11:44:56 +0000) ---------------------------------------------------------------- target-arm queue: * hw/arm/smmuv3: Fix up L1STD_SPAN decoding * xlnx-zynqmp: Support Xilinx ZynqMP CAN controllers * sbsa-ref: allow to use Cortex-A53/57/72 cpus * Various minor code cleanups * hw/intc/armv7m_nvic: Make all of system PPB range be RAZWI/BusFault * Implement more pieces of ARMv8.1M support ---------------------------------------------------------------- Alex Chen (4): i.MX25: Fix bad printf format specifiers i.MX31: Fix bad printf format specifiers i.MX6: Fix bad printf format specifiers i.MX6ul: Fix bad printf format specifiers Havard Skinnemoen (1): tests/qtest/npcm7xx_rng-test: dump random data on failure Kunkun Jiang (1): hw/arm/smmuv3: Fix up L1STD_SPAN decoding Marcin Juszkiewicz (1): sbsa-ref: allow to use Cortex-A53/57/72 cpus Peter Maydell (25): hw/intc/armv7m_nvic: Make all of system PPB range be RAZWI/BusFault target/arm: Implement v8.1M PXN extension target/arm: Don't clobber ID_PFR1.Security on M-profile cores target/arm: Implement VSCCLRM insn target/arm: Implement CLRM instruction target/arm: Enforce M-profile VMRS/VMSR register restrictions target/arm: Refactor M-profile VMSR/VMRS handling target/arm: Move general-use constant expanders up in translate.c target/arm: Implement VLDR/VSTR system register target/arm: Implement M-profile FPSCR_nzcvqc target/arm: Use new FPCR_NZCV_MASK constant target/arm: Factor out preserve-fp-state from full_vfp_access_check() target/arm: Implement FPCXT_S fp system register hw/intc/armv7m_nvic: Update FPDSCR masking for v8.1M target/arm: For v8.1M, always clear R0-R3, R12, APSR, EPSR on exception entry target/arm: In v8.1M, don't set HFSR.FORCED on vector table fetch failures target/arm: Implement v8.1M REVIDR register target/arm: Implement new v8.1M NOCP check for exception return target/arm: Implement new v8.1M VLLDM and VLSTM encodings hw/intc/armv7m_nvic: Support v8.1M CCR.TRD bit target/arm: Implement CCR_S.TRD behaviour for SG insns hw/intc/armv7m_nvic: Fix "return from inactive handler" check target/arm: Implement M-profile "minimal RAS implementation" hw/intc/armv7m_nvic: Implement read/write for RAS register block hw/arm/armv7m: Correct typo in QOM object name Vikram Garhwal (4): hw/net/can: Introduce Xilinx ZynqMP CAN controller xlnx-zynqmp: Connect Xilinx ZynqMP CAN controllers tests/qtest: Introduce tests for Xilinx ZynqMP CAN controller MAINTAINERS: Add maintainer entry for Xilinx ZynqMP CAN controller meson.build | 1 + hw/arm/smmuv3-internal.h | 2 +- hw/net/can/trace.h | 1 + include/hw/arm/xlnx-zynqmp.h | 8 + include/hw/intc/armv7m_nvic.h | 2 + include/hw/net/xlnx-zynqmp-can.h | 78 +++ target/arm/cpu.h | 46 ++ target/arm/m-nocp.decode | 10 +- target/arm/t32.decode | 10 +- target/arm/vfp.decode | 14 + hw/arm/armv7m.c | 4 +- hw/arm/sbsa-ref.c | 23 +- hw/arm/xlnx-zcu102.c | 20 + hw/arm/xlnx-zynqmp.c | 34 ++ hw/intc/armv7m_nvic.c | 246 ++++++-- hw/misc/imx25_ccm.c | 12 +- hw/misc/imx31_ccm.c | 14 +- hw/misc/imx6_ccm.c | 20 +- hw/misc/imx6_src.c | 2 +- hw/misc/imx6ul_ccm.c | 4 +- hw/misc/imx_ccm.c | 4 +- hw/net/can/xlnx-zynqmp-can.c | 1161 ++++++++++++++++++++++++++++++++++++++ target/arm/cpu.c | 5 +- target/arm/helper.c | 7 +- target/arm/m_helper.c | 130 ++++- target/arm/translate.c | 105 +++- tests/qtest/npcm7xx_rng-test.c | 12 + tests/qtest/xlnx-can-test.c | 360 ++++++++++++ MAINTAINERS | 8 + hw/Kconfig | 1 + hw/net/can/meson.build | 1 + hw/net/can/trace-events | 9 + target/arm/translate-vfp.c.inc | 511 ++++++++++++++++- tests/qtest/meson.build | 1 + 34 files changed, 2713 insertions(+), 153 deletions(-) create mode 100644 hw/net/can/trace.h create mode 100644 include/hw/net/xlnx-zynqmp-can.h create mode 100644 hw/net/can/xlnx-zynqmp-can.c create mode 100644 tests/qtest/xlnx-can-test.c create mode 100644 hw/net/can/trace-events From: Kunkun Jiang <jiangkunkun@huawei.com> Accroding to the SMMUv3 spec, the SPAN field of Level1 Stream Table Descriptor is 5 bits([4:0]). Fixes: 9bde7f0674f(hw/arm/smmuv3: Implement translate callback) Signed-off-by: Kunkun Jiang <jiangkunkun@huawei.com> Message-id: 20201124023711.1184-1-jiangkunkun@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/arm/smmuv3-internal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/smmuv3-internal.h +++ b/hw/arm/smmuv3-internal.h @@ -XXX,XX +XXX,XX @@ static inline uint64_t l1std_l2ptr(STEDesc *desc) return hi << 32 | lo; } -#define L1STD_SPAN(stm) (extract32((stm)->word[0], 0, 4)) +#define L1STD_SPAN(stm) (extract32((stm)->word[0], 0, 5)) #endif -- 2.20.1 From: Vikram Garhwal <fnu.vikram@xilinx.com> The Xilinx ZynqMP CAN controller is developed based on SocketCAN, QEMU CAN bus implementation. Bus connection and socketCAN connection for each CAN module can be set through command lines. Example for using single CAN: -object can-bus,id=canbus0 \ -machine xlnx-zcu102.canbus0=canbus0 \ -object can-host-socketcan,id=socketcan0,if=vcan0,canbus=canbus0 Example for connecting both CAN to same virtual CAN on host machine: -object can-bus,id=canbus0 -object can-bus,id=canbus1 \ -machine xlnx-zcu102.canbus0=canbus0 \ -machine xlnx-zcu102.canbus1=canbus1 \ -object can-host-socketcan,id=socketcan0,if=vcan0,canbus=canbus0 \ -object can-host-socketcan,id=socketcan1,if=vcan0,canbus=canbus1 To create virtual CAN on the host machine, please check the QEMU CAN docs: https://github.com/qemu/qemu/blob/master/docs/can.txt Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com> Message-id: 1605728926-352690-2-git-send-email-fnu.vikram@xilinx.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- meson.build | 1 + hw/net/can/trace.h | 1 + include/hw/net/xlnx-zynqmp-can.h | 78 ++ hw/net/can/xlnx-zynqmp-can.c | 1161 ++++++++++++++++++++++++++++++ hw/Kconfig | 1 + hw/net/can/meson.build | 1 + hw/net/can/trace-events | 9 + 7 files changed, 1252 insertions(+) create mode 100644 hw/net/can/trace.h create mode 100644 include/hw/net/xlnx-zynqmp-can.h create mode 100644 hw/net/can/xlnx-zynqmp-can.c create mode 100644 hw/net/can/trace-events diff --git a/meson.build b/meson.build index XXXXXXX..XXXXXXX 100644 --- a/meson.build +++ b/meson.build @@ -XXX,XX +XXX,XX @@ if have_system 'hw/misc', 'hw/misc/macio', 'hw/net', + 'hw/net/can', 'hw/nvram', 'hw/pci', 'hw/pci-host', diff --git a/hw/net/can/trace.h b/hw/net/can/trace.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/net/can/trace.h @@ -0,0 +1 @@ +#include "trace/trace-hw_net_can.h" diff --git a/include/hw/net/xlnx-zynqmp-can.h b/include/hw/net/xlnx-zynqmp-can.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/net/xlnx-zynqmp-can.h @@ -XXX,XX +XXX,XX @@ +/* + * QEMU model of the Xilinx ZynqMP CAN controller. + * + * Copyright (c) 2020 Xilinx Inc. + * + * Written-by: Vikram Garhwal<fnu.vikram@xilinx.com> + * + * Based on QEMU CAN Device emulation implemented by Jin Yang, Deniz Eren and + * Pavel Pisa. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef XLNX_ZYNQMP_CAN_H +#define XLNX_ZYNQMP_CAN_H + +#include "hw/register.h" +#include "net/can_emu.h" +#include "net/can_host.h" +#include "qemu/fifo32.h" +#include "hw/ptimer.h" +#include "hw/qdev-clock.h" + +#define TYPE_XLNX_ZYNQMP_CAN "xlnx.zynqmp-can" + +#define XLNX_ZYNQMP_CAN(obj) \ + OBJECT_CHECK(XlnxZynqMPCANState, (obj), TYPE_XLNX_ZYNQMP_CAN) + +#define MAX_CAN_CTRLS 2 +#define XLNX_ZYNQMP_CAN_R_MAX (0x84 / 4) +#define MAILBOX_CAPACITY 64 +#define CAN_TIMER_MAX 0XFFFFUL +#define CAN_DEFAULT_CLOCK (24 * 1000 * 1000) + +/* Each CAN_FRAME will have 4 * 32bit size. */ +#define CAN_FRAME_SIZE 4 +#define RXFIFO_SIZE (MAILBOX_CAPACITY * CAN_FRAME_SIZE) + +typedef struct XlnxZynqMPCANState { + SysBusDevice parent_obj; + MemoryRegion iomem; + + qemu_irq irq; + + CanBusClientState bus_client; + CanBusState *canbus; + + struct { + uint32_t ext_clk_freq; + } cfg; + + RegisterInfo reg_info[XLNX_ZYNQMP_CAN_R_MAX]; + uint32_t regs[XLNX_ZYNQMP_CAN_R_MAX]; + + Fifo32 rx_fifo; + Fifo32 tx_fifo; + Fifo32 txhpb_fifo; + + ptimer_state *can_timer; +} XlnxZynqMPCANState; + +#endif diff --git a/hw/net/can/xlnx-zynqmp-can.c b/hw/net/can/xlnx-zynqmp-can.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/net/can/xlnx-zynqmp-can.c @@ -XXX,XX +XXX,XX @@ +/* + * QEMU model of the Xilinx ZynqMP CAN controller. + * This implementation is based on the following datasheet: + * https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf + * + * Copyright (c) 2020 Xilinx Inc. + * + * Written-by: Vikram Garhwal<fnu.vikram@xilinx.com> + * + * Based on QEMU CAN Device emulation implemented by Jin Yang, Deniz Eren and + * Pavel Pisa + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "hw/register.h" +#include "hw/irq.h" +#include "qapi/error.h" +#include "qemu/bitops.h" +#include "qemu/log.h" +#include "qemu/cutils.h" +#include "sysemu/sysemu.h" +#include "migration/vmstate.h" +#include "hw/qdev-properties.h" +#include "net/can_emu.h" +#include "net/can_host.h" +#include "qemu/event_notifier.h" +#include "qom/object_interfaces.h" +#include "hw/net/xlnx-zynqmp-can.h" +#include "trace.h" + +#ifndef XLNX_ZYNQMP_CAN_ERR_DEBUG +#define XLNX_ZYNQMP_CAN_ERR_DEBUG 0 +#endif + +#define MAX_DLC 8 +#undef ERROR + +REG32(SOFTWARE_RESET_REGISTER, 0x0) + FIELD(SOFTWARE_RESET_REGISTER, CEN, 1, 1) + FIELD(SOFTWARE_RESET_REGISTER, SRST, 0, 1) +REG32(MODE_SELECT_REGISTER, 0x4) + FIELD(MODE_SELECT_REGISTER, SNOOP, 2, 1) + FIELD(MODE_SELECT_REGISTER, LBACK, 1, 1) + FIELD(MODE_SELECT_REGISTER, SLEEP, 0, 1) +REG32(ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER, 0x8) + FIELD(ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER, BRP, 0, 8) +REG32(ARBITRATION_PHASE_BIT_TIMING_REGISTER, 0xc) + FIELD(ARBITRATION_PHASE_BIT_TIMING_REGISTER, SJW, 7, 2) + FIELD(ARBITRATION_PHASE_BIT_TIMING_REGISTER, TS2, 4, 3) + FIELD(ARBITRATION_PHASE_BIT_TIMING_REGISTER, TS1, 0, 4) +REG32(ERROR_COUNTER_REGISTER, 0x10) + FIELD(ERROR_COUNTER_REGISTER, REC, 8, 8) + FIELD(ERROR_COUNTER_REGISTER, TEC, 0, 8) +REG32(ERROR_STATUS_REGISTER, 0x14) + FIELD(ERROR_STATUS_REGISTER, ACKER, 4, 1) + FIELD(ERROR_STATUS_REGISTER, BERR, 3, 1) + FIELD(ERROR_STATUS_REGISTER, STER, 2, 1) + FIELD(ERROR_STATUS_REGISTER, FMER, 1, 1) + FIELD(ERROR_STATUS_REGISTER, CRCER, 0, 1) +REG32(STATUS_REGISTER, 0x18) + FIELD(STATUS_REGISTER, SNOOP, 12, 1) + FIELD(STATUS_REGISTER, ACFBSY, 11, 1) + FIELD(STATUS_REGISTER, TXFLL, 10, 1) + FIELD(STATUS_REGISTER, TXBFLL, 9, 1) + FIELD(STATUS_REGISTER, ESTAT, 7, 2) + FIELD(STATUS_REGISTER, ERRWRN, 6, 1) + FIELD(STATUS_REGISTER, BBSY, 5, 1) + FIELD(STATUS_REGISTER, BIDLE, 4, 1) + FIELD(STATUS_REGISTER, NORMAL, 3, 1) + FIELD(STATUS_REGISTER, SLEEP, 2, 1) + FIELD(STATUS_REGISTER, LBACK, 1, 1) + FIELD(STATUS_REGISTER, CONFIG, 0, 1) +REG32(INTERRUPT_STATUS_REGISTER, 0x1c) + FIELD(INTERRUPT_STATUS_REGISTER, TXFEMP, 14, 1) + FIELD(INTERRUPT_STATUS_REGISTER, TXFWMEMP, 13, 1) + FIELD(INTERRUPT_STATUS_REGISTER, RXFWMFLL, 12, 1) + FIELD(INTERRUPT_STATUS_REGISTER, WKUP, 11, 1) + FIELD(INTERRUPT_STATUS_REGISTER, SLP, 10, 1) + FIELD(INTERRUPT_STATUS_REGISTER, BSOFF, 9, 1) + FIELD(INTERRUPT_STATUS_REGISTER, ERROR, 8, 1) + FIELD(INTERRUPT_STATUS_REGISTER, RXNEMP, 7, 1) + FIELD(INTERRUPT_STATUS_REGISTER, RXOFLW, 6, 1) + FIELD(INTERRUPT_STATUS_REGISTER, RXUFLW, 5, 1) + FIELD(INTERRUPT_STATUS_REGISTER, RXOK, 4, 1) + FIELD(INTERRUPT_STATUS_REGISTER, TXBFLL, 3, 1) + FIELD(INTERRUPT_STATUS_REGISTER, TXFLL, 2, 1) + FIELD(INTERRUPT_STATUS_REGISTER, TXOK, 1, 1) + FIELD(INTERRUPT_STATUS_REGISTER, ARBLST, 0, 1) +REG32(INTERRUPT_ENABLE_REGISTER, 0x20) + FIELD(INTERRUPT_ENABLE_REGISTER, ETXFEMP, 14, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ETXFWMEMP, 13, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ERXFWMFLL, 12, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, EWKUP, 11, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ESLP, 10, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, EBSOFF, 9, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, EERROR, 8, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ERXNEMP, 7, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ERXOFLW, 6, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ERXUFLW, 5, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ERXOK, 4, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ETXBFLL, 3, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ETXFLL, 2, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, ETXOK, 1, 1) + FIELD(INTERRUPT_ENABLE_REGISTER, EARBLST, 0, 1) +REG32(INTERRUPT_CLEAR_REGISTER, 0x24) + FIELD(INTERRUPT_CLEAR_REGISTER, CTXFEMP, 14, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CTXFWMEMP, 13, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CRXFWMFLL, 12, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CWKUP, 11, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CSLP, 10, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CBSOFF, 9, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CERROR, 8, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CRXNEMP, 7, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CRXOFLW, 6, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CRXUFLW, 5, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CRXOK, 4, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CTXBFLL, 3, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CTXFLL, 2, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CTXOK, 1, 1) + FIELD(INTERRUPT_CLEAR_REGISTER, CARBLST, 0, 1) +REG32(TIMESTAMP_REGISTER, 0x28) + FIELD(TIMESTAMP_REGISTER, CTS, 0, 1) +REG32(WIR, 0x2c) + FIELD(WIR, EW, 8, 8) + FIELD(WIR, FW, 0, 8) +REG32(TXFIFO_ID, 0x30) + FIELD(TXFIFO_ID, IDH, 21, 11) + FIELD(TXFIFO_ID, SRRRTR, 20, 1) + FIELD(TXFIFO_ID, IDE, 19, 1) + FIELD(TXFIFO_ID, IDL, 1, 18) + FIELD(TXFIFO_ID, RTR, 0, 1) +REG32(TXFIFO_DLC, 0x34) + FIELD(TXFIFO_DLC, DLC, 28, 4) +REG32(TXFIFO_DATA1, 0x38) + FIELD(TXFIFO_DATA1, DB0, 24, 8) + FIELD(TXFIFO_DATA1, DB1, 16, 8) + FIELD(TXFIFO_DATA1, DB2, 8, 8) + FIELD(TXFIFO_DATA1, DB3, 0, 8) +REG32(TXFIFO_DATA2, 0x3c) + FIELD(TXFIFO_DATA2, DB4, 24, 8) + FIELD(TXFIFO_DATA2, DB5, 16, 8) + FIELD(TXFIFO_DATA2, DB6, 8, 8) + FIELD(TXFIFO_DATA2, DB7, 0, 8) +REG32(TXHPB_ID, 0x40) + FIELD(TXHPB_ID, IDH, 21, 11) + FIELD(TXHPB_ID, SRRRTR, 20, 1) + FIELD(TXHPB_ID, IDE, 19, 1) + FIELD(TXHPB_ID, IDL, 1, 18) + FIELD(TXHPB_ID, RTR, 0, 1) +REG32(TXHPB_DLC, 0x44) + FIELD(TXHPB_DLC, DLC, 28, 4) +REG32(TXHPB_DATA1, 0x48) + FIELD(TXHPB_DATA1, DB0, 24, 8) + FIELD(TXHPB_DATA1, DB1, 16, 8) + FIELD(TXHPB_DATA1, DB2, 8, 8) + FIELD(TXHPB_DATA1, DB3, 0, 8) +REG32(TXHPB_DATA2, 0x4c) + FIELD(TXHPB_DATA2, DB4, 24, 8) + FIELD(TXHPB_DATA2, DB5, 16, 8) + FIELD(TXHPB_DATA2, DB6, 8, 8) + FIELD(TXHPB_DATA2, DB7, 0, 8) +REG32(RXFIFO_ID, 0x50) + FIELD(RXFIFO_ID, IDH, 21, 11) + FIELD(RXFIFO_ID, SRRRTR, 20, 1) + FIELD(RXFIFO_ID, IDE, 19, 1) + FIELD(RXFIFO_ID, IDL, 1, 18) + FIELD(RXFIFO_ID, RTR, 0, 1) +REG32(RXFIFO_DLC, 0x54) + FIELD(RXFIFO_DLC, DLC, 28, 4) + FIELD(RXFIFO_DLC, RXT, 0, 16) +REG32(RXFIFO_DATA1, 0x58) + FIELD(RXFIFO_DATA1, DB0, 24, 8) + FIELD(RXFIFO_DATA1, DB1, 16, 8) + FIELD(RXFIFO_DATA1, DB2, 8, 8) + FIELD(RXFIFO_DATA1, DB3, 0, 8) +REG32(RXFIFO_DATA2, 0x5c) + FIELD(RXFIFO_DATA2, DB4, 24, 8) + FIELD(RXFIFO_DATA2, DB5, 16, 8) + FIELD(RXFIFO_DATA2, DB6, 8, 8) + FIELD(RXFIFO_DATA2, DB7, 0, 8) +REG32(AFR, 0x60) + FIELD(AFR, UAF4, 3, 1) + FIELD(AFR, UAF3, 2, 1) + FIELD(AFR, UAF2, 1, 1) + FIELD(AFR, UAF1, 0, 1) +REG32(AFMR1, 0x64) + FIELD(AFMR1, AMIDH, 21, 11) + FIELD(AFMR1, AMSRR, 20, 1) + FIELD(AFMR1, AMIDE, 19, 1) + FIELD(AFMR1, AMIDL, 1, 18) + FIELD(AFMR1, AMRTR, 0, 1) +REG32(AFIR1, 0x68) + FIELD(AFIR1, AIIDH, 21, 11) + FIELD(AFIR1, AISRR, 20, 1) + FIELD(AFIR1, AIIDE, 19, 1) + FIELD(AFIR1, AIIDL, 1, 18) + FIELD(AFIR1, AIRTR, 0, 1) +REG32(AFMR2, 0x6c) + FIELD(AFMR2, AMIDH, 21, 11) + FIELD(AFMR2, AMSRR, 20, 1) + FIELD(AFMR2, AMIDE, 19, 1) + FIELD(AFMR2, AMIDL, 1, 18) + FIELD(AFMR2, AMRTR, 0, 1) +REG32(AFIR2, 0x70) + FIELD(AFIR2, AIIDH, 21, 11) + FIELD(AFIR2, AISRR, 20, 1) + FIELD(AFIR2, AIIDE, 19, 1) + FIELD(AFIR2, AIIDL, 1, 18) + FIELD(AFIR2, AIRTR, 0, 1) +REG32(AFMR3, 0x74) + FIELD(AFMR3, AMIDH, 21, 11) + FIELD(AFMR3, AMSRR, 20, 1) + FIELD(AFMR3, AMIDE, 19, 1) + FIELD(AFMR3, AMIDL, 1, 18) + FIELD(AFMR3, AMRTR, 0, 1) +REG32(AFIR3, 0x78) + FIELD(AFIR3, AIIDH, 21, 11) + FIELD(AFIR3, AISRR, 20, 1) + FIELD(AFIR3, AIIDE, 19, 1) + FIELD(AFIR3, AIIDL, 1, 18) + FIELD(AFIR3, AIRTR, 0, 1) +REG32(AFMR4, 0x7c) + FIELD(AFMR4, AMIDH, 21, 11) + FIELD(AFMR4, AMSRR, 20, 1) + FIELD(AFMR4, AMIDE, 19, 1) + FIELD(AFMR4, AMIDL, 1, 18) + FIELD(AFMR4, AMRTR, 0, 1) +REG32(AFIR4, 0x80) + FIELD(AFIR4, AIIDH, 21, 11) + FIELD(AFIR4, AISRR, 20, 1) + FIELD(AFIR4, AIIDE, 19, 1) + FIELD(AFIR4, AIIDL, 1, 18) + FIELD(AFIR4, AIRTR, 0, 1) + +static void can_update_irq(XlnxZynqMPCANState *s) +{ + uint32_t irq; + + /* Watermark register interrupts. */ + if ((fifo32_num_free(&s->tx_fifo) / CAN_FRAME_SIZE) > + ARRAY_FIELD_EX32(s->regs, WIR, EW)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXFWMEMP, 1); + } + + if ((fifo32_num_used(&s->rx_fifo) / CAN_FRAME_SIZE) > + ARRAY_FIELD_EX32(s->regs, WIR, FW)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXFWMFLL, 1); + } + + /* RX Interrupts. */ + if (fifo32_num_used(&s->rx_fifo) >= CAN_FRAME_SIZE) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXNEMP, 1); + } + + /* TX interrupts. */ + if (fifo32_is_empty(&s->tx_fifo)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXFEMP, 1); + } + + if (fifo32_is_full(&s->tx_fifo)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXFLL, 1); + } + + if (fifo32_is_full(&s->txhpb_fifo)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXBFLL, 1); + } + + irq = s->regs[R_INTERRUPT_STATUS_REGISTER]; + irq &= s->regs[R_INTERRUPT_ENABLE_REGISTER]; + + trace_xlnx_can_update_irq(s->regs[R_INTERRUPT_STATUS_REGISTER], + s->regs[R_INTERRUPT_ENABLE_REGISTER], irq); + qemu_set_irq(s->irq, irq); +} + +static void can_ier_post_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + can_update_irq(s); +} + +static uint64_t can_icr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + s->regs[R_INTERRUPT_STATUS_REGISTER] &= ~val; + can_update_irq(s); + + return 0; +} + +static void can_config_reset(XlnxZynqMPCANState *s) +{ + /* Reset all the configuration registers. */ + register_reset(&s->reg_info[R_SOFTWARE_RESET_REGISTER]); + register_reset(&s->reg_info[R_MODE_SELECT_REGISTER]); + register_reset( + &s->reg_info[R_ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER]); + register_reset(&s->reg_info[R_ARBITRATION_PHASE_BIT_TIMING_REGISTER]); + register_reset(&s->reg_info[R_STATUS_REGISTER]); + register_reset(&s->reg_info[R_INTERRUPT_STATUS_REGISTER]); + register_reset(&s->reg_info[R_INTERRUPT_ENABLE_REGISTER]); + register_reset(&s->reg_info[R_INTERRUPT_CLEAR_REGISTER]); + register_reset(&s->reg_info[R_WIR]); +} + +static void can_config_mode(XlnxZynqMPCANState *s) +{ + register_reset(&s->reg_info[R_ERROR_COUNTER_REGISTER]); + register_reset(&s->reg_info[R_ERROR_STATUS_REGISTER]); + + /* Put XlnxZynqMPCAN in configuration mode. */ + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, CONFIG, 1); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, WKUP, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, SLP, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, BSOFF, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, ERROR, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOFLW, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOK, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXOK, 0); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, ARBLST, 0); + + can_update_irq(s); +} + +static void update_status_register_mode_bits(XlnxZynqMPCANState *s) +{ + bool sleep_status = ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SLEEP); + bool sleep_mode = ARRAY_FIELD_EX32(s->regs, MODE_SELECT_REGISTER, SLEEP); + /* Wake up interrupt bit. */ + bool wakeup_irq_val = sleep_status && (sleep_mode == 0); + /* Sleep interrupt bit. */ + bool sleep_irq_val = sleep_mode && (sleep_status == 0); + + /* Clear previous core mode status bits. */ + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, LBACK, 0); + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, SLEEP, 0); + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, SNOOP, 0); + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, NORMAL, 0); + + /* set current mode bit and generate irqs accordingly. */ + if (ARRAY_FIELD_EX32(s->regs, MODE_SELECT_REGISTER, LBACK)) { + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, LBACK, 1); + } else if (ARRAY_FIELD_EX32(s->regs, MODE_SELECT_REGISTER, SLEEP)) { + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, SLEEP, 1); + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, SLP, + sleep_irq_val); + } else if (ARRAY_FIELD_EX32(s->regs, MODE_SELECT_REGISTER, SNOOP)) { + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, SNOOP, 1); + } else { + /* + * If all bits are zero then XlnxZynqMPCAN is set in normal mode. + */ + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, NORMAL, 1); + /* Set wakeup interrupt bit. */ + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, WKUP, + wakeup_irq_val); + } + + can_update_irq(s); +} + +static void can_exit_sleep_mode(XlnxZynqMPCANState *s) +{ + ARRAY_FIELD_DP32(s->regs, MODE_SELECT_REGISTER, SLEEP, 0); + update_status_register_mode_bits(s); +} + +static void generate_frame(qemu_can_frame *frame, uint32_t *data) +{ + frame->can_id = data[0]; + frame->can_dlc = FIELD_EX32(data[1], TXFIFO_DLC, DLC); + + frame->data[0] = FIELD_EX32(data[2], TXFIFO_DATA1, DB3); + frame->data[1] = FIELD_EX32(data[2], TXFIFO_DATA1, DB2); + frame->data[2] = FIELD_EX32(data[2], TXFIFO_DATA1, DB1); + frame->data[3] = FIELD_EX32(data[2], TXFIFO_DATA1, DB0); + + frame->data[4] = FIELD_EX32(data[3], TXFIFO_DATA2, DB7); + frame->data[5] = FIELD_EX32(data[3], TXFIFO_DATA2, DB6); + frame->data[6] = FIELD_EX32(data[3], TXFIFO_DATA2, DB5); + frame->data[7] = FIELD_EX32(data[3], TXFIFO_DATA2, DB4); +} + +static bool tx_ready_check(XlnxZynqMPCANState *s) +{ + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, SRST)) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to transfer data while" + " data while controller is in reset mode.\n", + path); + return false; + } + + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN) == 0) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to transfer" + " data while controller is in configuration mode. Reset" + " the core so operations can start fresh.\n", + path); + return false; + } + + if (ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SNOOP)) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to transfer" + " data while controller is in SNOOP MODE.\n", + path); + return false; + } + + return true; +} + +static void transfer_fifo(XlnxZynqMPCANState *s, Fifo32 *fifo) +{ + qemu_can_frame frame; + uint32_t data[CAN_FRAME_SIZE]; + int i; + bool can_tx = tx_ready_check(s); + + if (!can_tx) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Controller is not enabled for data" + " transfer.\n", path); + can_update_irq(s); + return; + } + + while (!fifo32_is_empty(fifo)) { + for (i = 0; i < CAN_FRAME_SIZE; i++) { + data[i] = fifo32_pop(fifo); + } + + if (ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, LBACK)) { + /* + * Controller is in loopback. In Loopback mode, the CAN core + * transmits a recessive bitstream on to the XlnxZynqMPCAN Bus. + * Any message transmitted is looped back to the RX line and + * acknowledged. The XlnxZynqMPCAN core receives any message + * that it transmits. + */ + if (fifo32_is_full(&s->rx_fifo)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOFLW, 1); + } else { + for (i = 0; i < CAN_FRAME_SIZE; i++) { + fifo32_push(&s->rx_fifo, data[i]); + } + + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOK, 1); + } + } else { + /* Normal mode Tx. */ + generate_frame(&frame, data); + + trace_xlnx_can_tx_data(frame.can_id, frame.can_dlc, + frame.data[0], frame.data[1], + frame.data[2], frame.data[3], + frame.data[4], frame.data[5], + frame.data[6], frame.data[7]); + can_bus_client_send(&s->bus_client, &frame, 1); + } + } + + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, TXOK, 1); + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, TXBFLL, 0); + + if (ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SLEEP)) { + can_exit_sleep_mode(s); + } + + can_update_irq(s); +} + +static uint64_t can_srr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + ARRAY_FIELD_DP32(s->regs, SOFTWARE_RESET_REGISTER, CEN, + FIELD_EX32(val, SOFTWARE_RESET_REGISTER, CEN)); + + if (FIELD_EX32(val, SOFTWARE_RESET_REGISTER, SRST)) { + trace_xlnx_can_reset(val); + + /* First, core will do software reset then will enter in config mode. */ + can_config_reset(s); + } + + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN) == 0) { + can_config_mode(s); + } else { + /* + * Leave config mode. Now XlnxZynqMPCAN core will enter normal, + * sleep, snoop or loopback mode depending upon LBACK, SLEEP, SNOOP + * register states. + */ + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, CONFIG, 0); + + ptimer_transaction_begin(s->can_timer); + ptimer_set_count(s->can_timer, 0); + ptimer_transaction_commit(s->can_timer); + + /* XlnxZynqMPCAN is out of config mode. It will send pending data. */ + transfer_fifo(s, &s->txhpb_fifo); + transfer_fifo(s, &s->tx_fifo); + } + + update_status_register_mode_bits(s); + + return s->regs[R_SOFTWARE_RESET_REGISTER]; +} + +static uint64_t can_msr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + uint8_t multi_mode; + + /* + * Multiple mode set check. This is done to make sure user doesn't set + * multiple modes. + */ + multi_mode = FIELD_EX32(val, MODE_SELECT_REGISTER, LBACK) + + FIELD_EX32(val, MODE_SELECT_REGISTER, SLEEP) + + FIELD_EX32(val, MODE_SELECT_REGISTER, SNOOP); + + if (multi_mode > 1) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to config" + " several modes simultaneously. One mode will be selected" + " according to their priority: LBACK > SLEEP > SNOOP.\n", + path); + } + + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN) == 0) { + /* We are in configuration mode, any mode can be selected. */ + s->regs[R_MODE_SELECT_REGISTER] = val; + } else { + bool sleep_mode_bit = FIELD_EX32(val, MODE_SELECT_REGISTER, SLEEP); + + ARRAY_FIELD_DP32(s->regs, MODE_SELECT_REGISTER, SLEEP, sleep_mode_bit); + + if (FIELD_EX32(val, MODE_SELECT_REGISTER, LBACK)) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to set" + " LBACK mode without setting CEN bit as 0.\n", + path); + } else if (FIELD_EX32(val, MODE_SELECT_REGISTER, SNOOP)) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Attempting to set" + " SNOOP mode without setting CEN bit as 0.\n", + path); + } + + update_status_register_mode_bits(s); + } + + return s->regs[R_MODE_SELECT_REGISTER]; +} + +static uint64_t can_brpr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + /* Only allow writes when in config mode. */ + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN)) { + return s->regs[R_ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER]; + } + + return val; +} + +static uint64_t can_btr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + /* Only allow writes when in config mode. */ + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN)) { + return s->regs[R_ARBITRATION_PHASE_BIT_TIMING_REGISTER]; + } + + return val; +} + +static uint64_t can_tcr_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + if (FIELD_EX32(val, TIMESTAMP_REGISTER, CTS)) { + ptimer_transaction_begin(s->can_timer); + ptimer_set_count(s->can_timer, 0); + ptimer_transaction_commit(s->can_timer); + } + + return 0; +} + +static void update_rx_fifo(XlnxZynqMPCANState *s, const qemu_can_frame *frame) +{ + bool filter_pass = false; + uint16_t timestamp = 0; + + /* If no filter is enabled. Message will be stored in FIFO. */ + if (!((ARRAY_FIELD_EX32(s->regs, AFR, UAF1)) | + (ARRAY_FIELD_EX32(s->regs, AFR, UAF2)) | + (ARRAY_FIELD_EX32(s->regs, AFR, UAF3)) | + (ARRAY_FIELD_EX32(s->regs, AFR, UAF4)))) { + filter_pass = true; + } + + /* + * Messages that pass any of the acceptance filters will be stored in + * the RX FIFO. + */ + if (ARRAY_FIELD_EX32(s->regs, AFR, UAF1)) { + uint32_t id_masked = s->regs[R_AFMR1] & frame->can_id; + uint32_t filter_id_masked = s->regs[R_AFMR1] & s->regs[R_AFIR1]; + + if (filter_id_masked == id_masked) { + filter_pass = true; + } + } + + if (ARRAY_FIELD_EX32(s->regs, AFR, UAF2)) { + uint32_t id_masked = s->regs[R_AFMR2] & frame->can_id; + uint32_t filter_id_masked = s->regs[R_AFMR2] & s->regs[R_AFIR2]; + + if (filter_id_masked == id_masked) { + filter_pass = true; + } + } + + if (ARRAY_FIELD_EX32(s->regs, AFR, UAF3)) { + uint32_t id_masked = s->regs[R_AFMR3] & frame->can_id; + uint32_t filter_id_masked = s->regs[R_AFMR3] & s->regs[R_AFIR3]; + + if (filter_id_masked == id_masked) { + filter_pass = true; + } + } + + if (ARRAY_FIELD_EX32(s->regs, AFR, UAF4)) { + uint32_t id_masked = s->regs[R_AFMR4] & frame->can_id; + uint32_t filter_id_masked = s->regs[R_AFMR4] & s->regs[R_AFIR4]; + + if (filter_id_masked == id_masked) { + filter_pass = true; + } + } + + if (!filter_pass) { + trace_xlnx_can_rx_fifo_filter_reject(frame->can_id, frame->can_dlc); + return; + } + + /* Store the message in fifo if it passed through any of the filters. */ + if (filter_pass && frame->can_dlc <= MAX_DLC) { + + if (fifo32_is_full(&s->rx_fifo)) { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOFLW, 1); + } else { + timestamp = CAN_TIMER_MAX - ptimer_get_count(s->can_timer); + + fifo32_push(&s->rx_fifo, frame->can_id); + + fifo32_push(&s->rx_fifo, deposit32(0, R_RXFIFO_DLC_DLC_SHIFT, + R_RXFIFO_DLC_DLC_LENGTH, + frame->can_dlc) | + deposit32(0, R_RXFIFO_DLC_RXT_SHIFT, + R_RXFIFO_DLC_RXT_LENGTH, + timestamp)); + + /* First 32 bit of the data. */ + fifo32_push(&s->rx_fifo, deposit32(0, R_TXFIFO_DATA1_DB3_SHIFT, + R_TXFIFO_DATA1_DB3_LENGTH, + frame->data[0]) | + deposit32(0, R_TXFIFO_DATA1_DB2_SHIFT, + R_TXFIFO_DATA1_DB2_LENGTH, + frame->data[1]) | + deposit32(0, R_TXFIFO_DATA1_DB1_SHIFT, + R_TXFIFO_DATA1_DB1_LENGTH, + frame->data[2]) | + deposit32(0, R_TXFIFO_DATA1_DB0_SHIFT, + R_TXFIFO_DATA1_DB0_LENGTH, + frame->data[3])); + /* Last 32 bit of the data. */ + fifo32_push(&s->rx_fifo, deposit32(0, R_TXFIFO_DATA2_DB7_SHIFT, + R_TXFIFO_DATA2_DB7_LENGTH, + frame->data[4]) | + deposit32(0, R_TXFIFO_DATA2_DB6_SHIFT, + R_TXFIFO_DATA2_DB6_LENGTH, + frame->data[5]) | + deposit32(0, R_TXFIFO_DATA2_DB5_SHIFT, + R_TXFIFO_DATA2_DB5_LENGTH, + frame->data[6]) | + deposit32(0, R_TXFIFO_DATA2_DB4_SHIFT, + R_TXFIFO_DATA2_DB4_LENGTH, + frame->data[7])); + + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXOK, 1); + trace_xlnx_can_rx_data(frame->can_id, frame->can_dlc, + frame->data[0], frame->data[1], + frame->data[2], frame->data[3], + frame->data[4], frame->data[5], + frame->data[6], frame->data[7]); + } + + can_update_irq(s); + } +} + +static uint64_t can_rxfifo_pre_read(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + if (!fifo32_is_empty(&s->rx_fifo)) { + val = fifo32_pop(&s->rx_fifo); + } else { + ARRAY_FIELD_DP32(s->regs, INTERRUPT_STATUS_REGISTER, RXUFLW, 1); + } + + can_update_irq(s); + return val; +} + +static void can_filter_enable_post_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + if (ARRAY_FIELD_EX32(s->regs, AFR, UAF1) && + ARRAY_FIELD_EX32(s->regs, AFR, UAF2) && + ARRAY_FIELD_EX32(s->regs, AFR, UAF3) && + ARRAY_FIELD_EX32(s->regs, AFR, UAF4)) { + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, ACFBSY, 1); + } else { + ARRAY_FIELD_DP32(s->regs, STATUS_REGISTER, ACFBSY, 0); + } +} + +static uint64_t can_filter_mask_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + uint32_t reg_idx = (reg->access->addr) / 4; + uint32_t filter_number = (reg_idx - R_AFMR1) / 2; + + /* modify an acceptance filter, the corresponding UAF bit should be '0'. */ + if (!(s->regs[R_AFR] & (1 << filter_number))) { + s->regs[reg_idx] = val; + + trace_xlnx_can_filter_mask_pre_write(filter_number, s->regs[reg_idx]); + } else { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Acceptance filter %d" + " mask is not set as corresponding UAF bit is not 0.\n", + path, filter_number + 1); + } + + return s->regs[reg_idx]; +} + +static uint64_t can_filter_id_pre_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + uint32_t reg_idx = (reg->access->addr) / 4; + uint32_t filter_number = (reg_idx - R_AFIR1) / 2; + + if (!(s->regs[R_AFR] & (1 << filter_number))) { + s->regs[reg_idx] = val; + + trace_xlnx_can_filter_id_pre_write(filter_number, s->regs[reg_idx]); + } else { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Acceptance filter %d" + " id is not set as corresponding UAF bit is not 0.\n", + path, filter_number + 1); + } + + return s->regs[reg_idx]; +} + +static void can_tx_post_write(RegisterInfo *reg, uint64_t val) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(reg->opaque); + + bool is_txhpb = reg->access->addr > A_TXFIFO_DATA2; + + bool initiate_transfer = (reg->access->addr == A_TXFIFO_DATA2) || + (reg->access->addr == A_TXHPB_DATA2); + + Fifo32 *f = is_txhpb ? &s->txhpb_fifo : &s->tx_fifo; + + if (!fifo32_is_full(f)) { + fifo32_push(f, val); + } else { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: TX FIFO is full.\n", path); + } + + /* Initiate the message send if TX register is written. */ + if (initiate_transfer && + ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN)) { + transfer_fifo(s, f); + } + + can_update_irq(s); +} + +static const RegisterAccessInfo can_regs_info[] = { + { .name = "SOFTWARE_RESET_REGISTER", + .addr = A_SOFTWARE_RESET_REGISTER, + .rsvd = 0xfffffffc, + .pre_write = can_srr_pre_write, + },{ .name = "MODE_SELECT_REGISTER", + .addr = A_MODE_SELECT_REGISTER, + .rsvd = 0xfffffff8, + .pre_write = can_msr_pre_write, + },{ .name = "ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER", + .addr = A_ARBITRATION_PHASE_BAUD_RATE_PRESCALER_REGISTER, + .rsvd = 0xffffff00, + .pre_write = can_brpr_pre_write, + },{ .name = "ARBITRATION_PHASE_BIT_TIMING_REGISTER", + .addr = A_ARBITRATION_PHASE_BIT_TIMING_REGISTER, + .rsvd = 0xfffffe00, + .pre_write = can_btr_pre_write, + },{ .name = "ERROR_COUNTER_REGISTER", + .addr = A_ERROR_COUNTER_REGISTER, + .rsvd = 0xffff0000, + .ro = 0xffffffff, + },{ .name = "ERROR_STATUS_REGISTER", + .addr = A_ERROR_STATUS_REGISTER, + .rsvd = 0xffffffe0, + .w1c = 0x1f, + },{ .name = "STATUS_REGISTER", .addr = A_STATUS_REGISTER, + .reset = 0x1, + .rsvd = 0xffffe000, + .ro = 0x1fff, + },{ .name = "INTERRUPT_STATUS_REGISTER", + .addr = A_INTERRUPT_STATUS_REGISTER, + .reset = 0x6000, + .rsvd = 0xffff8000, + .ro = 0x7fff, + },{ .name = "INTERRUPT_ENABLE_REGISTER", + .addr = A_INTERRUPT_ENABLE_REGISTER, + .rsvd = 0xffff8000, + .post_write = can_ier_post_write, + },{ .name = "INTERRUPT_CLEAR_REGISTER", + .addr = A_INTERRUPT_CLEAR_REGISTER, + .rsvd = 0xffff8000, + .pre_write = can_icr_pre_write, + },{ .name = "TIMESTAMP_REGISTER", + .addr = A_TIMESTAMP_REGISTER, + .rsvd = 0xfffffffe, + .pre_write = can_tcr_pre_write, + },{ .name = "WIR", .addr = A_WIR, + .reset = 0x3f3f, + .rsvd = 0xffff0000, + },{ .name = "TXFIFO_ID", .addr = A_TXFIFO_ID, + .post_write = can_tx_post_write, + },{ .name = "TXFIFO_DLC", .addr = A_TXFIFO_DLC, + .rsvd = 0xfffffff, + .post_write = can_tx_post_write, + },{ .name = "TXFIFO_DATA1", .addr = A_TXFIFO_DATA1, + .post_write = can_tx_post_write, + },{ .name = "TXFIFO_DATA2", .addr = A_TXFIFO_DATA2, + .post_write = can_tx_post_write, + },{ .name = "TXHPB_ID", .addr = A_TXHPB_ID, + .post_write = can_tx_post_write, + },{ .name = "TXHPB_DLC", .addr = A_TXHPB_DLC, + .rsvd = 0xfffffff, + .post_write = can_tx_post_write, + },{ .name = "TXHPB_DATA1", .addr = A_TXHPB_DATA1, + .post_write = can_tx_post_write, + },{ .name = "TXHPB_DATA2", .addr = A_TXHPB_DATA2, + .post_write = can_tx_post_write, + },{ .name = "RXFIFO_ID", .addr = A_RXFIFO_ID, + .ro = 0xffffffff, + .post_read = can_rxfifo_pre_read, + },{ .name = "RXFIFO_DLC", .addr = A_RXFIFO_DLC, + .rsvd = 0xfff0000, + .post_read = can_rxfifo_pre_read, + },{ .name = "RXFIFO_DATA1", .addr = A_RXFIFO_DATA1, + .post_read = can_rxfifo_pre_read, + },{ .name = "RXFIFO_DATA2", .addr = A_RXFIFO_DATA2, + .post_read = can_rxfifo_pre_read, + },{ .name = "AFR", .addr = A_AFR, + .rsvd = 0xfffffff0, + .post_write = can_filter_enable_post_write, + },{ .name = "AFMR1", .addr = A_AFMR1, + .pre_write = can_filter_mask_pre_write, + },{ .name = "AFIR1", .addr = A_AFIR1, + .pre_write = can_filter_id_pre_write, + },{ .name = "AFMR2", .addr = A_AFMR2, + .pre_write = can_filter_mask_pre_write, + },{ .name = "AFIR2", .addr = A_AFIR2, + .pre_write = can_filter_id_pre_write, + },{ .name = "AFMR3", .addr = A_AFMR3, + .pre_write = can_filter_mask_pre_write, + },{ .name = "AFIR3", .addr = A_AFIR3, + .pre_write = can_filter_id_pre_write, + },{ .name = "AFMR4", .addr = A_AFMR4, + .pre_write = can_filter_mask_pre_write, + },{ .name = "AFIR4", .addr = A_AFIR4, + .pre_write = can_filter_id_pre_write, + } +}; + +static void xlnx_zynqmp_can_ptimer_cb(void *opaque) +{ + /* No action required on the timer rollover. */ +} + +static const MemoryRegionOps can_ops = { + .read = register_read_memory, + .write = register_write_memory, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static void xlnx_zynqmp_can_reset_init(Object *obj, ResetType type) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(obj); + unsigned int i; + + for (i = R_RXFIFO_ID; i < ARRAY_SIZE(s->reg_info); ++i) { + register_reset(&s->reg_info[i]); + } + + ptimer_transaction_begin(s->can_timer); + ptimer_set_count(s->can_timer, 0); + ptimer_transaction_commit(s->can_timer); +} + +static void xlnx_zynqmp_can_reset_hold(Object *obj) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(obj); + unsigned int i; + + for (i = 0; i < R_RXFIFO_ID; ++i) { + register_reset(&s->reg_info[i]); + } + + /* + * Reset FIFOs when CAN model is reset. This will clear the fifo writes + * done by post_write which gets called from register_reset function, + * post_write handle will not be able to trigger tx because CAN will be + * disabled when software_reset_register is cleared first. + */ + fifo32_reset(&s->rx_fifo); + fifo32_reset(&s->tx_fifo); + fifo32_reset(&s->txhpb_fifo); +} + +static bool xlnx_zynqmp_can_can_receive(CanBusClientState *client) +{ + XlnxZynqMPCANState *s = container_of(client, XlnxZynqMPCANState, + bus_client); + + if (ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, SRST)) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Controller is in reset state.\n", + path); + return false; + } + + if ((ARRAY_FIELD_EX32(s->regs, SOFTWARE_RESET_REGISTER, CEN)) == 0) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Controller is disabled. Incoming" + " messages will be discarded.\n", path); + return false; + } + + return true; +} + +static ssize_t xlnx_zynqmp_can_receive(CanBusClientState *client, + const qemu_can_frame *buf, size_t buf_size) { + XlnxZynqMPCANState *s = container_of(client, XlnxZynqMPCANState, + bus_client); + const qemu_can_frame *frame = buf; + + if (buf_size <= 0) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + qemu_log_mask(LOG_GUEST_ERROR, "%s: Error in the data received.\n", + path); + return 0; + } + + if (ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SNOOP)) { + /* Snoop Mode: Just keep the data. no response back. */ + update_rx_fifo(s, frame); + } else if ((ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SLEEP))) { + /* + * XlnxZynqMPCAN is in sleep mode. Any data on bus will bring it to wake + * up state. + */ + can_exit_sleep_mode(s); + update_rx_fifo(s, frame); + } else if ((ARRAY_FIELD_EX32(s->regs, STATUS_REGISTER, SLEEP)) == 0) { + update_rx_fifo(s, frame); + } else { + /* + * XlnxZynqMPCAN will not participate in normal bus communication + * and will not receive any messages transmitted by other CAN nodes. + */ + trace_xlnx_can_rx_discard(s->regs[R_STATUS_REGISTER]); + } + + return 1; +} + +static CanBusClientInfo can_xilinx_bus_client_info = { + .can_receive = xlnx_zynqmp_can_can_receive, + .receive = xlnx_zynqmp_can_receive, +}; + +static int xlnx_zynqmp_can_connect_to_bus(XlnxZynqMPCANState *s, + CanBusState *bus) +{ + s->bus_client.info = &can_xilinx_bus_client_info; + + if (can_bus_insert_client(bus, &s->bus_client) < 0) { + return -1; + } + return 0; +} + +static void xlnx_zynqmp_can_realize(DeviceState *dev, Error **errp) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(dev); + + if (s->canbus) { + if (xlnx_zynqmp_can_connect_to_bus(s, s->canbus) < 0) { + g_autofree char *path = object_get_canonical_path(OBJECT(s)); + + error_setg(errp, "%s: xlnx_zynqmp_can_connect_to_bus" + " failed.", path); + return; + } + } + + /* Create RX FIFO, TXFIFO, TXHPB storage. */ + fifo32_create(&s->rx_fifo, RXFIFO_SIZE); + fifo32_create(&s->tx_fifo, RXFIFO_SIZE); + fifo32_create(&s->txhpb_fifo, CAN_FRAME_SIZE); + + /* Allocate a new timer. */ + s->can_timer = ptimer_init(xlnx_zynqmp_can_ptimer_cb, s, + PTIMER_POLICY_DEFAULT); + + ptimer_transaction_begin(s->can_timer); + + ptimer_set_freq(s->can_timer, s->cfg.ext_clk_freq); + ptimer_set_limit(s->can_timer, CAN_TIMER_MAX, 1); + ptimer_run(s->can_timer, 0); + ptimer_transaction_commit(s->can_timer); +} + +static void xlnx_zynqmp_can_init(Object *obj) +{ + XlnxZynqMPCANState *s = XLNX_ZYNQMP_CAN(obj); + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + + RegisterInfoArray *reg_array; + + memory_region_init(&s->iomem, obj, TYPE_XLNX_ZYNQMP_CAN, + XLNX_ZYNQMP_CAN_R_MAX * 4); + reg_array = register_init_block32(DEVICE(obj), can_regs_info, + ARRAY_SIZE(can_regs_info), + s->reg_info, s->regs, + &can_ops, + XLNX_ZYNQMP_CAN_ERR_DEBUG, + XLNX_ZYNQMP_CAN_R_MAX * 4); + + memory_region_add_subregion(&s->iomem, 0x00, &reg_array->mem); + sysbus_init_mmio(sbd, &s->iomem); + sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq); +} + +static const VMStateDescription vmstate_can = { + .name = TYPE_XLNX_ZYNQMP_CAN, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_FIFO32(rx_fifo, XlnxZynqMPCANState), + VMSTATE_FIFO32(tx_fifo, XlnxZynqMPCANState), + VMSTATE_FIFO32(txhpb_fifo, XlnxZynqMPCANState), + VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPCANState, XLNX_ZYNQMP_CAN_R_MAX), + VMSTATE_PTIMER(can_timer, XlnxZynqMPCANState), + VMSTATE_END_OF_LIST(), + } +}; + +static Property xlnx_zynqmp_can_properties[] = { + DEFINE_PROP_UINT32("ext_clk_freq", XlnxZynqMPCANState, cfg.ext_clk_freq, + CAN_DEFAULT_CLOCK), + DEFINE_PROP_LINK("canbus", XlnxZynqMPCANState, canbus, TYPE_CAN_BUS, + CanBusState *), + DEFINE_PROP_END_OF_LIST(), +}; + +static void xlnx_zynqmp_can_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ResettableClass *rc = RESETTABLE_CLASS(klass); + + rc->phases.enter = xlnx_zynqmp_can_reset_init; + rc->phases.hold = xlnx_zynqmp_can_reset_hold; + dc->realize = xlnx_zynqmp_can_realize; + device_class_set_props(dc, xlnx_zynqmp_can_properties); + dc->vmsd = &vmstate_can; +} + +static const TypeInfo can_info = { + .name = TYPE_XLNX_ZYNQMP_CAN, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(XlnxZynqMPCANState), + .class_init = xlnx_zynqmp_can_class_init, + .instance_init = xlnx_zynqmp_can_init, +}; + +static void can_register_types(void) +{ + type_register_static(&can_info); +} + +type_init(can_register_types) diff --git a/hw/Kconfig b/hw/Kconfig index XXXXXXX..XXXXXXX 100644 --- a/hw/Kconfig +++ b/hw/Kconfig @@ -XXX,XX +XXX,XX @@ config XILINX_AXI config XLNX_ZYNQMP bool select REGISTER + select CAN_BUS diff --git a/hw/net/can/meson.build b/hw/net/can/meson.build index XXXXXXX..XXXXXXX 100644 --- a/hw/net/can/meson.build +++ b/hw/net/can/meson.build @@ -XXX,XX +XXX,XX @@ softmmu_ss.add(when: 'CONFIG_CAN_PCI', if_true: files('can_pcm3680_pci.c')) softmmu_ss.add(when: 'CONFIG_CAN_PCI', if_true: files('can_mioe3680_pci.c')) softmmu_ss.add(when: 'CONFIG_CAN_CTUCANFD', if_true: files('ctucan_core.c')) softmmu_ss.add(when: 'CONFIG_CAN_CTUCANFD_PCI', if_true: files('ctucan_pci.c')) +softmmu_ss.add(when: 'CONFIG_XLNX_ZYNQMP', if_true: files('xlnx-zynqmp-can.c')) diff --git a/hw/net/can/trace-events b/hw/net/can/trace-events new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/net/can/trace-events @@ -XXX,XX +XXX,XX @@ +# xlnx-zynqmp-can.c +xlnx_can_update_irq(uint32_t isr, uint32_t ier, uint32_t irq) "ISR: 0x%08x IER: 0x%08x IRQ: 0x%08x" +xlnx_can_reset(uint32_t val) "Resetting controller with value = 0x%08x" +xlnx_can_rx_fifo_filter_reject(uint32_t id, uint8_t dlc) "Frame: ID: 0x%08x DLC: 0x%02x" +xlnx_can_filter_id_pre_write(uint8_t filter_num, uint32_t value) "Filter%d ID: 0x%08x" +xlnx_can_filter_mask_pre_write(uint8_t filter_num, uint32_t value) "Filter%d MASK: 0x%08x" +xlnx_can_tx_data(uint32_t id, uint8_t dlc, uint8_t db0, uint8_t db1, uint8_t db2, uint8_t db3, uint8_t db4, uint8_t db5, uint8_t db6, uint8_t db7) "Frame: ID: 0x%08x DLC: 0x%02x DATA: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x" +xlnx_can_rx_data(uint32_t id, uint32_t dlc, uint8_t db0, uint8_t db1, uint8_t db2, uint8_t db3, uint8_t db4, uint8_t db5, uint8_t db6, uint8_t db7) "Frame: ID: 0x%08x DLC: 0x%02x DATA: 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x" +xlnx_can_rx_discard(uint32_t status) "Controller is not enabled for bus communication. Status Register: 0x%08x" -- 2.20.1 From: Vikram Garhwal <fnu.vikram@xilinx.com> Connect CAN0 and CAN1 on the ZynqMP. Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com> Message-id: 1605728926-352690-3-git-send-email-fnu.vikram@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/arm/xlnx-zynqmp.h | 8 ++++++++ hw/arm/xlnx-zcu102.c | 20 ++++++++++++++++++++ hw/arm/xlnx-zynqmp.c | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+) diff --git a/include/hw/arm/xlnx-zynqmp.h b/include/hw/arm/xlnx-zynqmp.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/arm/xlnx-zynqmp.h +++ b/include/hw/arm/xlnx-zynqmp.h @@ -XXX,XX +XXX,XX @@ #include "hw/intc/arm_gic.h" #include "hw/net/cadence_gem.h" #include "hw/char/cadence_uart.h" +#include "hw/net/xlnx-zynqmp-can.h" #include "hw/ide/ahci.h" #include "hw/sd/sdhci.h" #include "hw/ssi/xilinx_spips.h" @@ -XXX,XX +XXX,XX @@ #include "hw/cpu/cluster.h" #include "target/arm/cpu.h" #include "qom/object.h" +#include "net/can_emu.h" #define TYPE_XLNX_ZYNQMP "xlnx,zynqmp" OBJECT_DECLARE_SIMPLE_TYPE(XlnxZynqMPState, XLNX_ZYNQMP) @@ -XXX,XX +XXX,XX @@ OBJECT_DECLARE_SIMPLE_TYPE(XlnxZynqMPState, XLNX_ZYNQMP) #define XLNX_ZYNQMP_NUM_RPU_CPUS 2 #define XLNX_ZYNQMP_NUM_GEMS 4 #define XLNX_ZYNQMP_NUM_UARTS 2 +#define XLNX_ZYNQMP_NUM_CAN 2 +#define XLNX_ZYNQMP_CAN_REF_CLK (24 * 1000 * 1000) #define XLNX_ZYNQMP_NUM_SDHCI 2 #define XLNX_ZYNQMP_NUM_SPIS 2 #define XLNX_ZYNQMP_NUM_GDMA_CH 8 @@ -XXX,XX +XXX,XX @@ struct XlnxZynqMPState { CadenceGEMState gem[XLNX_ZYNQMP_NUM_GEMS]; CadenceUARTState uart[XLNX_ZYNQMP_NUM_UARTS]; + XlnxZynqMPCANState can[XLNX_ZYNQMP_NUM_CAN]; SysbusAHCIState sata; SDHCIState sdhci[XLNX_ZYNQMP_NUM_SDHCI]; XilinxSPIPS spi[XLNX_ZYNQMP_NUM_SPIS]; @@ -XXX,XX +XXX,XX @@ struct XlnxZynqMPState { bool virt; /* Has the RPU subsystem? */ bool has_rpu; + + /* CAN bus. */ + CanBusState *canbus[XLNX_ZYNQMP_NUM_CAN]; }; #endif diff --git a/hw/arm/xlnx-zcu102.c b/hw/arm/xlnx-zcu102.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/xlnx-zcu102.c +++ b/hw/arm/xlnx-zcu102.c @@ -XXX,XX +XXX,XX @@ #include "sysemu/qtest.h" #include "sysemu/device_tree.h" #include "qom/object.h" +#include "net/can_emu.h" struct XlnxZCU102 { MachineState parent_obj; @@ -XXX,XX +XXX,XX @@ struct XlnxZCU102 { bool secure; bool virt; + CanBusState *canbus[XLNX_ZYNQMP_NUM_CAN]; + struct arm_boot_info binfo; }; @@ -XXX,XX +XXX,XX @@ static void xlnx_zcu102_init(MachineState *machine) object_property_set_bool(OBJECT(&s->soc), "virtualization", s->virt, &error_fatal); + for (i = 0; i < XLNX_ZYNQMP_NUM_CAN; i++) { + gchar *bus_name = g_strdup_printf("canbus%d", i); + + object_property_set_link(OBJECT(&s->soc), bus_name, + OBJECT(s->canbus[i]), &error_fatal); + g_free(bus_name); + } + qdev_realize(DEVICE(&s->soc), NULL, &error_fatal); /* Create and plug in the SD cards */ @@ -XXX,XX +XXX,XX @@ static void xlnx_zcu102_machine_instance_init(Object *obj) s->secure = false; /* Default to virt (EL2) being disabled */ s->virt = false; + object_property_add_link(obj, "xlnx-zcu102.canbus0", TYPE_CAN_BUS, + (Object **)&s->canbus[0], + object_property_allow_set_link, + 0); + + object_property_add_link(obj, "xlnx-zcu102.canbus1", TYPE_CAN_BUS, + (Object **)&s->canbus[1], + object_property_allow_set_link, + 0); } static void xlnx_zcu102_machine_class_init(ObjectClass *oc, void *data) diff --git a/hw/arm/xlnx-zynqmp.c b/hw/arm/xlnx-zynqmp.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/xlnx-zynqmp.c +++ b/hw/arm/xlnx-zynqmp.c @@ -XXX,XX +XXX,XX @@ static const int uart_intr[XLNX_ZYNQMP_NUM_UARTS] = { 21, 22, }; +static const uint64_t can_addr[XLNX_ZYNQMP_NUM_CAN] = { + 0xFF060000, 0xFF070000, +}; + +static const int can_intr[XLNX_ZYNQMP_NUM_CAN] = { + 23, 24, +}; + static const uint64_t sdhci_addr[XLNX_ZYNQMP_NUM_SDHCI] = { 0xFF160000, 0xFF170000, }; @@ -XXX,XX +XXX,XX @@ static void xlnx_zynqmp_init(Object *obj) TYPE_CADENCE_UART); } + for (i = 0; i < XLNX_ZYNQMP_NUM_CAN; i++) { + object_initialize_child(obj, "can[*]", &s->can[i], + TYPE_XLNX_ZYNQMP_CAN); + } + object_initialize_child(obj, "sata", &s->sata, TYPE_SYSBUS_AHCI); for (i = 0; i < XLNX_ZYNQMP_NUM_SDHCI; i++) { @@ -XXX,XX +XXX,XX @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp) gic_spi[uart_intr[i]]); } + for (i = 0; i < XLNX_ZYNQMP_NUM_CAN; i++) { + object_property_set_int(OBJECT(&s->can[i]), "ext_clk_freq", + XLNX_ZYNQMP_CAN_REF_CLK, &error_abort); + + object_property_set_link(OBJECT(&s->can[i]), "canbus", + OBJECT(s->canbus[i]), &error_fatal); + + sysbus_realize(SYS_BUS_DEVICE(&s->can[i]), &err); + if (err) { + error_propagate(errp, err); + return; + } + sysbus_mmio_map(SYS_BUS_DEVICE(&s->can[i]), 0, can_addr[i]); + sysbus_connect_irq(SYS_BUS_DEVICE(&s->can[i]), 0, + gic_spi[can_intr[i]]); + } + object_property_set_int(OBJECT(&s->sata), "num-ports", SATA_NUM_PORTS, &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->sata), errp)) { @@ -XXX,XX +XXX,XX @@ static Property xlnx_zynqmp_props[] = { DEFINE_PROP_BOOL("has_rpu", XlnxZynqMPState, has_rpu, false), DEFINE_PROP_LINK("ddr-ram", XlnxZynqMPState, ddr_ram, TYPE_MEMORY_REGION, MemoryRegion *), + DEFINE_PROP_LINK("canbus0", XlnxZynqMPState, canbus[0], TYPE_CAN_BUS, + CanBusState *), + DEFINE_PROP_LINK("canbus1", XlnxZynqMPState, canbus[1], TYPE_CAN_BUS, + CanBusState *), DEFINE_PROP_END_OF_LIST() }; -- 2.20.1 From: Vikram Garhwal <fnu.vikram@xilinx.com> The QTests perform five tests on the Xilinx ZynqMP CAN controller: Tests the CAN controller in loopback, sleep and snoop mode. Tests filtering of incoming CAN messages. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com> Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com> Message-id: 1605728926-352690-4-git-send-email-fnu.vikram@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- tests/qtest/xlnx-can-test.c | 360 ++++++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 1 + 2 files changed, 361 insertions(+) create mode 100644 tests/qtest/xlnx-can-test.c diff --git a/tests/qtest/xlnx-can-test.c b/tests/qtest/xlnx-can-test.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/tests/qtest/xlnx-can-test.c @@ -XXX,XX +XXX,XX @@ +/* + * QTests for the Xilinx ZynqMP CAN controller. + * + * Copyright (c) 2020 Xilinx Inc. + * + * Written-by: Vikram Garhwal<fnu.vikram@xilinx.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "libqos/libqtest.h" + +/* Base address. */ +#define CAN0_BASE_ADDR 0xFF060000 +#define CAN1_BASE_ADDR 0xFF070000 + +/* Register addresses. */ +#define R_SRR_OFFSET 0x00 +#define R_MSR_OFFSET 0x04 +#define R_SR_OFFSET 0x18 +#define R_ISR_OFFSET 0x1C +#define R_ICR_OFFSET 0x24 +#define R_TXID_OFFSET 0x30 +#define R_TXDLC_OFFSET 0x34 +#define R_TXDATA1_OFFSET 0x38 +#define R_TXDATA2_OFFSET 0x3C +#define R_RXID_OFFSET 0x50 +#define R_RXDLC_OFFSET 0x54 +#define R_RXDATA1_OFFSET 0x58 +#define R_RXDATA2_OFFSET 0x5C +#define R_AFR 0x60 +#define R_AFMR1 0x64 +#define R_AFIR1 0x68 +#define R_AFMR2 0x6C +#define R_AFIR2 0x70 +#define R_AFMR3 0x74 +#define R_AFIR3 0x78 +#define R_AFMR4 0x7C +#define R_AFIR4 0x80 + +/* CAN modes. */ +#define CONFIG_MODE 0x00 +#define NORMAL_MODE 0x00 +#define LOOPBACK_MODE 0x02 +#define SNOOP_MODE 0x04 +#define SLEEP_MODE 0x01 +#define ENABLE_CAN (1 << 1) +#define STATUS_NORMAL_MODE (1 << 3) +#define STATUS_LOOPBACK_MODE (1 << 1) +#define STATUS_SNOOP_MODE (1 << 12) +#define STATUS_SLEEP_MODE (1 << 2) +#define ISR_TXOK (1 << 1) +#define ISR_RXOK (1 << 4) + +static void match_rx_tx_data(const uint32_t *buf_tx, const uint32_t *buf_rx, + uint8_t can_timestamp) +{ + uint16_t size = 0; + uint8_t len = 4; + + while (size < len) { + if (R_RXID_OFFSET + 4 * size == R_RXDLC_OFFSET) { + g_assert_cmpint(buf_rx[size], ==, buf_tx[size] + can_timestamp); + } else { + g_assert_cmpint(buf_rx[size], ==, buf_tx[size]); + } + + size++; + } +} + +static void read_data(QTestState *qts, uint64_t can_base_addr, uint32_t *buf_rx) +{ + uint32_t int_status; + + /* Read the interrupt on CAN rx. */ + int_status = qtest_readl(qts, can_base_addr + R_ISR_OFFSET) & ISR_RXOK; + + g_assert_cmpint(int_status, ==, ISR_RXOK); + + /* Read the RX register data for CAN. */ + buf_rx[0] = qtest_readl(qts, can_base_addr + R_RXID_OFFSET); + buf_rx[1] = qtest_readl(qts, can_base_addr + R_RXDLC_OFFSET); + buf_rx[2] = qtest_readl(qts, can_base_addr + R_RXDATA1_OFFSET); + buf_rx[3] = qtest_readl(qts, can_base_addr + R_RXDATA2_OFFSET); + + /* Clear the RX interrupt. */ + qtest_writel(qts, CAN1_BASE_ADDR + R_ICR_OFFSET, ISR_RXOK); +} + +static void send_data(QTestState *qts, uint64_t can_base_addr, + const uint32_t *buf_tx) +{ + uint32_t int_status; + + /* Write the TX register data for CAN. */ + qtest_writel(qts, can_base_addr + R_TXID_OFFSET, buf_tx[0]); + qtest_writel(qts, can_base_addr + R_TXDLC_OFFSET, buf_tx[1]); + qtest_writel(qts, can_base_addr + R_TXDATA1_OFFSET, buf_tx[2]); + qtest_writel(qts, can_base_addr + R_TXDATA2_OFFSET, buf_tx[3]); + + /* Read the interrupt on CAN for tx. */ + int_status = qtest_readl(qts, can_base_addr + R_ISR_OFFSET) & ISR_TXOK; + + g_assert_cmpint(int_status, ==, ISR_TXOK); + + /* Clear the interrupt for tx. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_ICR_OFFSET, ISR_TXOK); +} + +/* + * This test will be transferring data from CAN0 and CAN1 through canbus. CAN0 + * initiate the data transfer to can-bus, CAN1 receives the data. Test compares + * the data sent from CAN0 with received on CAN1. + */ +static void test_can_bus(void) +{ + const uint32_t buf_tx[4] = { 0xFF, 0x80000000, 0x12345678, 0x87654321 }; + uint32_t buf_rx[4] = { 0x00, 0x00, 0x00, 0x00 }; + uint32_t status = 0; + uint8_t can_timestamp = 1; + + QTestState *qts = qtest_init("-machine xlnx-zcu102" + " -object can-bus,id=canbus0" + " -machine xlnx-zcu102.canbus0=canbus0" + " -machine xlnx-zcu102.canbus1=canbus0" + ); + + /* Configure the CAN0 and CAN1. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN0_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN1_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + + /* Check here if CAN0 and CAN1 are in normal mode. */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + status = qtest_readl(qts, CAN1_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + send_data(qts, CAN0_BASE_ADDR, buf_tx); + + read_data(qts, CAN1_BASE_ADDR, buf_rx); + match_rx_tx_data(buf_tx, buf_rx, can_timestamp); + + qtest_quit(qts); +} + +/* + * This test is performing loopback mode on CAN0 and CAN1. Data sent from TX of + * each CAN0 and CAN1 are compared with RX register data for respective CAN. + */ +static void test_can_loopback(void) +{ + uint32_t buf_tx[4] = { 0xFF, 0x80000000, 0x12345678, 0x87654321 }; + uint32_t buf_rx[4] = { 0x00, 0x00, 0x00, 0x00 }; + uint32_t status = 0; + + QTestState *qts = qtest_init("-machine xlnx-zcu102" + " -object can-bus,id=canbus0" + " -machine xlnx-zcu102.canbus0=canbus0" + " -machine xlnx-zcu102.canbus1=canbus0" + ); + + /* Configure the CAN0 in loopback mode. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, CONFIG_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_MSR_OFFSET, LOOPBACK_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + + /* Check here if CAN0 is set in loopback mode. */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + + g_assert_cmpint(status, ==, STATUS_LOOPBACK_MODE); + + send_data(qts, CAN0_BASE_ADDR, buf_tx); + read_data(qts, CAN0_BASE_ADDR, buf_rx); + match_rx_tx_data(buf_tx, buf_rx, 0); + + /* Configure the CAN1 in loopback mode. */ + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, CONFIG_MODE); + qtest_writel(qts, CAN1_BASE_ADDR + R_MSR_OFFSET, LOOPBACK_MODE); + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + + /* Check here if CAN1 is set in loopback mode. */ + status = qtest_readl(qts, CAN1_BASE_ADDR + R_SR_OFFSET); + + g_assert_cmpint(status, ==, STATUS_LOOPBACK_MODE); + + send_data(qts, CAN1_BASE_ADDR, buf_tx); + read_data(qts, CAN1_BASE_ADDR, buf_rx); + match_rx_tx_data(buf_tx, buf_rx, 0); + + qtest_quit(qts); +} + +/* + * Enable filters for CAN1. This will filter incoming messages with ID. In this + * test message will pass through filter 2. + */ +static void test_can_filter(void) +{ + uint32_t buf_tx[4] = { 0x14, 0x80000000, 0x12345678, 0x87654321 }; + uint32_t buf_rx[4] = { 0x00, 0x00, 0x00, 0x00 }; + uint32_t status = 0; + uint8_t can_timestamp = 1; + + QTestState *qts = qtest_init("-machine xlnx-zcu102" + " -object can-bus,id=canbus0" + " -machine xlnx-zcu102.canbus0=canbus0" + " -machine xlnx-zcu102.canbus1=canbus0" + ); + + /* Configure the CAN0 and CAN1. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN0_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN1_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + + /* Check here if CAN0 and CAN1 are in normal mode. */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + status = qtest_readl(qts, CAN1_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + /* Set filter for CAN1 for incoming messages. */ + qtest_writel(qts, CAN1_BASE_ADDR + R_AFR, 0x0); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFMR1, 0xF7); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFIR1, 0x121F); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFMR2, 0x5431); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFIR2, 0x14); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFMR3, 0x1234); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFIR3, 0x5431); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFMR4, 0xFFF); + qtest_writel(qts, CAN1_BASE_ADDR + R_AFIR4, 0x1234); + + qtest_writel(qts, CAN1_BASE_ADDR + R_AFR, 0xF); + + send_data(qts, CAN0_BASE_ADDR, buf_tx); + + read_data(qts, CAN1_BASE_ADDR, buf_rx); + match_rx_tx_data(buf_tx, buf_rx, can_timestamp); + + qtest_quit(qts); +} + +/* Testing sleep mode on CAN0 while CAN1 is in normal mode. */ +static void test_can_sleepmode(void) +{ + uint32_t buf_tx[4] = { 0x14, 0x80000000, 0x12345678, 0x87654321 }; + uint32_t buf_rx[4] = { 0x00, 0x00, 0x00, 0x00 }; + uint32_t status = 0; + uint8_t can_timestamp = 1; + + QTestState *qts = qtest_init("-machine xlnx-zcu102" + " -object can-bus,id=canbus0" + " -machine xlnx-zcu102.canbus0=canbus0" + " -machine xlnx-zcu102.canbus1=canbus0" + ); + + /* Configure the CAN0. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, CONFIG_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_MSR_OFFSET, SLEEP_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN1_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + + /* Check here if CAN0 is in SLEEP mode and CAN1 in normal mode. */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_SLEEP_MODE); + + status = qtest_readl(qts, CAN1_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + send_data(qts, CAN1_BASE_ADDR, buf_tx); + + /* + * Once CAN1 sends data on can-bus. CAN0 should exit sleep mode. + * Check the CAN0 status now. It should exit the sleep mode and receive the + * incoming data. + */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + read_data(qts, CAN0_BASE_ADDR, buf_rx); + + match_rx_tx_data(buf_tx, buf_rx, can_timestamp); + + qtest_quit(qts); +} + +/* Testing Snoop mode on CAN0 while CAN1 is in normal mode. */ +static void test_can_snoopmode(void) +{ + uint32_t buf_tx[4] = { 0x14, 0x80000000, 0x12345678, 0x87654321 }; + uint32_t buf_rx[4] = { 0x00, 0x00, 0x00, 0x00 }; + uint32_t status = 0; + uint8_t can_timestamp = 1; + + QTestState *qts = qtest_init("-machine xlnx-zcu102" + " -object can-bus,id=canbus0" + " -machine xlnx-zcu102.canbus0=canbus0" + " -machine xlnx-zcu102.canbus1=canbus0" + ); + + /* Configure the CAN0. */ + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, CONFIG_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_MSR_OFFSET, SNOOP_MODE); + qtest_writel(qts, CAN0_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + + qtest_writel(qts, CAN1_BASE_ADDR + R_SRR_OFFSET, ENABLE_CAN); + qtest_writel(qts, CAN1_BASE_ADDR + R_MSR_OFFSET, NORMAL_MODE); + + /* Check here if CAN0 is in SNOOP mode and CAN1 in normal mode. */ + status = qtest_readl(qts, CAN0_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_SNOOP_MODE); + + status = qtest_readl(qts, CAN1_BASE_ADDR + R_SR_OFFSET); + g_assert_cmpint(status, ==, STATUS_NORMAL_MODE); + + send_data(qts, CAN1_BASE_ADDR, buf_tx); + + read_data(qts, CAN0_BASE_ADDR, buf_rx); + + match_rx_tx_data(buf_tx, buf_rx, can_timestamp); + + qtest_quit(qts); +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + + qtest_add_func("/net/can/can_bus", test_can_bus); + qtest_add_func("/net/can/can_loopback", test_can_loopback); + qtest_add_func("/net/can/can_filter", test_can_filter); + qtest_add_func("/net/can/can_test_snoopmode", test_can_snoopmode); + qtest_add_func("/net/can/can_test_sleepmode", test_can_sleepmode); + + return g_test_run(); +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -XXX,XX +XXX,XX @@ qtests_aarch64 = \ ['arm-cpu-features', 'numa-test', 'boot-serial-test', + 'xlnx-can-test', 'migration-test'] qtests_s390x = \ -- 2.20.1 From: Vikram Garhwal <fnu.vikram@xilinx.com> Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com> Message-id: 1605728926-352690-5-git-send-email-fnu.vikram@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index XXXXXXX..XXXXXXX 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -XXX,XX +XXX,XX @@ F: hw/net/opencores_eth.c Devices ------- +Xilinx CAN +M: Vikram Garhwal <fnu.vikram@xilinx.com> +M: Francisco Iglesias <francisco.iglesias@xilinx.com> +S: Maintained +F: hw/net/can/xlnx-* +F: include/hw/net/xlnx-* +F: tests/qtest/xlnx-can-test* + EDU M: Jiri Slaby <jslaby@suse.cz> S: Maintained -- 2.20.1 From: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> Trusted Firmware now supports A72 on sbsa-ref by default [1] so enable it for QEMU as well. A53 was already enabled there. 1. https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/7117 Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201120141705.246690-1-marcin.juszkiewicz@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/arm/sbsa-ref.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/sbsa-ref.c +++ b/hw/arm/sbsa-ref.c @@ -XXX,XX +XXX,XX @@ static const int sbsa_ref_irqmap[] = { [SBSA_GWDT] = 16, }; +static const char * const valid_cpus[] = { + ARM_CPU_TYPE_NAME("cortex-a53"), + ARM_CPU_TYPE_NAME("cortex-a57"), + ARM_CPU_TYPE_NAME("cortex-a72"), +}; + +static bool cpu_type_valid(const char *cpu) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(valid_cpus); i++) { + if (strcmp(cpu, valid_cpus[i]) == 0) { + return true; + } + } + return false; +} + static uint64_t sbsa_ref_cpu_mp_affinity(SBSAMachineState *sms, int idx) { uint8_t clustersz = ARM_DEFAULT_CPUS_PER_CLUSTER; @@ -XXX,XX +XXX,XX @@ static void sbsa_ref_init(MachineState *machine) const CPUArchIdList *possible_cpus; int n, sbsa_max_cpus; - if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a57"))) { - error_report("sbsa-ref: CPU type other than the built-in " - "cortex-a57 not supported"); + if (!cpu_type_valid(machine->cpu_type)) { + error_report("mach-virt: CPU type %s not supported", machine->cpu_type); exit(1); } -- 2.20.1 From: Havard Skinnemoen <hskinnemoen@google.com> Dump the collected random data after a randomness test failure. Note that this relies on the test having called g_test_set_nonfatal_assertions() so we don't abort immediately on the assertion failure. Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: minor commit message tweak] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- tests/qtest/npcm7xx_rng-test.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tests/qtest/npcm7xx_rng-test.c b/tests/qtest/npcm7xx_rng-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/npcm7xx_rng-test.c +++ b/tests/qtest/npcm7xx_rng-test.c @@ -XXX,XX +XXX,XX @@ #include "libqtest-single.h" #include "qemu/bitops.h" +#include "qemu-common.h" #define RNG_BASE_ADDR 0xf000b000 @@ -XXX,XX +XXX,XX @@ /* Number of bits to collect for randomness tests. */ #define TEST_INPUT_BITS (128) +static void dump_buf_if_failed(const uint8_t *buf, size_t size) +{ + if (g_test_failed()) { + qemu_hexdump(stderr, "", buf, size); + } +} + static void rng_writeb(unsigned int offset, uint8_t value) { writeb(RNG_BASE_ADDR + offset, value); @@ -XXX,XX +XXX,XX @@ static void test_continuous_monobit(void) } g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01); + dump_buf_if_failed(buf, sizeof(buf)); } /* @@ -XXX,XX +XXX,XX @@ static void test_continuous_runs(void) } g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01); + dump_buf_if_failed(buf.c, sizeof(buf)); } /* @@ -XXX,XX +XXX,XX @@ static void test_first_byte_monobit(void) } g_assert_cmpfloat(calc_monobit_p(buf, sizeof(buf)), >, 0.01); + dump_buf_if_failed(buf, sizeof(buf)); } /* @@ -XXX,XX +XXX,XX @@ static void test_first_byte_runs(void) } g_assert_cmpfloat(calc_runs_p(buf.l, sizeof(buf) * BITS_PER_BYTE), >, 0.01); + dump_buf_if_failed(buf.c, sizeof(buf)); } int main(int argc, char **argv) -- 2.20.1 From: Alex Chen <alex.chen@huawei.com> We should use printf format specifier "%u" instead of "%d" for argument of type "unsigned int". Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Alex Chen <alex.chen@huawei.com> Message-id: 20201126111109.112238-2-alex.chen@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/imx25_ccm.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/misc/imx25_ccm.c b/hw/misc/imx25_ccm.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx25_ccm.c +++ b/hw/misc/imx25_ccm.c @@ -XXX,XX +XXX,XX @@ static const char *imx25_ccm_reg_name(uint32_t reg) case IMX25_CCM_LPIMR1_REG: return "lpimr1"; default: - sprintf(unknown, "[%d ?]", reg); + sprintf(unknown, "[%u ?]", reg); return unknown; } } @@ -XXX,XX +XXX,XX @@ static uint32_t imx25_ccm_get_mpll_clk(IMXCCMState *dev) freq = imx_ccm_calc_pll(s->reg[IMX25_CCM_MPCTL_REG], CKIH_FREQ); } - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx25_ccm_get_mcu_clk(IMXCCMState *dev) freq = freq / (1 + EXTRACT(s->reg[IMX25_CCM_CCTL_REG], ARM_CLK_DIV)); - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx25_ccm_get_ahb_clk(IMXCCMState *dev) freq = imx25_ccm_get_mcu_clk(dev) / (1 + EXTRACT(s->reg[IMX25_CCM_CCTL_REG], AHB_CLK_DIV)); - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx25_ccm_get_ipg_clk(IMXCCMState *dev) freq = imx25_ccm_get_ahb_clk(dev) / 2; - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx25_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock) break; } - DPRINTF("Clock = %d) = %d\n", clock, freq); + DPRINTF("Clock = %d) = %u\n", clock, freq); return freq; } -- 2.20.1 From: Alex Chen <alex.chen@huawei.com> We should use printf format specifier "%u" instead of "%d" for argument of type "unsigned int". Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Alex Chen <alex.chen@huawei.com> Message-id: 20201126111109.112238-3-alex.chen@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/imx31_ccm.c | 14 +++++++------- hw/misc/imx_ccm.c | 4 ++-- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/hw/misc/imx31_ccm.c b/hw/misc/imx31_ccm.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx31_ccm.c +++ b/hw/misc/imx31_ccm.c @@ -XXX,XX +XXX,XX @@ static const char *imx31_ccm_reg_name(uint32_t reg) case IMX31_CCM_PDR2_REG: return "PDR2"; default: - sprintf(unknown, "[%d ?]", reg); + sprintf(unknown, "[%u ?]", reg); return unknown; } } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_pll_ref_clk(IMXCCMState *dev) freq = CKIH_FREQ; } - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_mpll_clk(IMXCCMState *dev) freq = imx_ccm_calc_pll(s->reg[IMX31_CCM_MPCTL_REG], imx31_ccm_get_pll_ref_clk(dev)); - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_mcu_main_clk(IMXCCMState *dev) freq = imx31_ccm_get_mpll_clk(dev); } - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_hclk_clk(IMXCCMState *dev) freq = imx31_ccm_get_mcu_main_clk(dev) / (1 + EXTRACT(s->reg[IMX31_CCM_PDR0_REG], MAX)); - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_ipg_clk(IMXCCMState *dev) freq = imx31_ccm_get_hclk_clk(dev) / (1 + EXTRACT(s->reg[IMX31_CCM_PDR0_REG], IPG)); - DPRINTF("freq = %d\n", freq); + DPRINTF("freq = %u\n", freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx31_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock) break; } - DPRINTF("Clock = %d) = %d\n", clock, freq); + DPRINTF("Clock = %d) = %u\n", clock, freq); return freq; } diff --git a/hw/misc/imx_ccm.c b/hw/misc/imx_ccm.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx_ccm.c +++ b/hw/misc/imx_ccm.c @@ -XXX,XX +XXX,XX @@ uint32_t imx_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock) freq = klass->get_clock_frequency(dev, clock); } - DPRINTF("(clock = %d) = %d\n", clock, freq); + DPRINTF("(clock = %d) = %u\n", clock, freq); return freq; } @@ -XXX,XX +XXX,XX @@ uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq) freq = ((2 * (base_freq >> 10) * (mfi * mfd + mfn)) / (mfd * pd)) << 10; - DPRINTF("(pllreg = 0x%08x, base_freq = %d) = %d\n", pllreg, base_freq, + DPRINTF("(pllreg = 0x%08x, base_freq = %u) = %d\n", pllreg, base_freq, freq); return freq; -- 2.20.1 From: Alex Chen <alex.chen@huawei.com> We should use printf format specifier "%u" instead of "%d" for argument of type "unsigned int". Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Alex Chen <alex.chen@huawei.com> Message-id: 20201126111109.112238-4-alex.chen@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/imx6_ccm.c | 20 ++++++++++---------- hw/misc/imx6_src.c | 2 +- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/hw/misc/imx6_ccm.c b/hw/misc/imx6_ccm.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx6_ccm.c +++ b/hw/misc/imx6_ccm.c @@ -XXX,XX +XXX,XX @@ static const char *imx6_ccm_reg_name(uint32_t reg) case CCM_CMEOR: return "CMEOR"; default: - sprintf(unknown, "%d ?", reg); + sprintf(unknown, "%u ?", reg); return unknown; } } @@ -XXX,XX +XXX,XX @@ static const char *imx6_analog_reg_name(uint32_t reg) case USB_ANALOG_DIGPROG: return "USB_ANALOG_DIGPROG"; default: - sprintf(unknown, "%d ?", reg); + sprintf(unknown, "%u ?", reg); return unknown; } } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_analog_get_pll2_clk(IMX6CCMState *dev) freq *= 20; } - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_analog_get_pll2_pfd0_clk(IMX6CCMState *dev) freq = imx6_analog_get_pll2_clk(dev) * 18 / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD0_FRAC); - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_analog_get_pll2_pfd2_clk(IMX6CCMState *dev) freq = imx6_analog_get_pll2_clk(dev) * 18 / EXTRACT(dev->analog[CCM_ANALOG_PFD_528], PFD2_FRAC); - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_analog_get_periph_clk(IMX6CCMState *dev) break; } - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_ccm_get_ahb_clk(IMX6CCMState *dev) freq = imx6_analog_get_periph_clk(dev) / (1 + EXTRACT(dev->ccm[CCM_CBCDR], AHB_PODF)); - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_ccm_get_ipg_clk(IMX6CCMState *dev) freq = imx6_ccm_get_ahb_clk(dev) / (1 + EXTRACT(dev->ccm[CCM_CBCDR], IPG_PODF)); - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint64_t imx6_ccm_get_per_clk(IMX6CCMState *dev) freq = imx6_ccm_get_ipg_clk(dev) / (1 + EXTRACT(dev->ccm[CCM_CSCMR1], PERCLK_PODF)); - DPRINTF("freq = %d\n", (uint32_t)freq); + DPRINTF("freq = %u\n", (uint32_t)freq); return freq; } @@ -XXX,XX +XXX,XX @@ static uint32_t imx6_ccm_get_clock_frequency(IMXCCMState *dev, IMXClk clock) break; } - DPRINTF("Clock = %d) = %d\n", clock, freq); + DPRINTF("Clock = %d) = %u\n", clock, freq); return freq; } diff --git a/hw/misc/imx6_src.c b/hw/misc/imx6_src.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx6_src.c +++ b/hw/misc/imx6_src.c @@ -XXX,XX +XXX,XX @@ static const char *imx6_src_reg_name(uint32_t reg) case SRC_GPR10: return "SRC_GPR10"; default: - sprintf(unknown, "%d ?", reg); + sprintf(unknown, "%u ?", reg); return unknown; } } -- 2.20.1 From: Alex Chen <alex.chen@huawei.com> We should use printf format specifier "%u" instead of "%d" for argument of type "unsigned int". Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Alex Chen <alex.chen@huawei.com> Message-id: 20201126111109.112238-5-alex.chen@huawei.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/misc/imx6ul_ccm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/misc/imx6ul_ccm.c b/hw/misc/imx6ul_ccm.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/imx6ul_ccm.c +++ b/hw/misc/imx6ul_ccm.c @@ -XXX,XX +XXX,XX @@ static const char *imx6ul_ccm_reg_name(uint32_t reg) case CCM_CMEOR: return "CMEOR"; default: - sprintf(unknown, "%d ?", reg); + sprintf(unknown, "%u ?", reg); return unknown; } } @@ -XXX,XX +XXX,XX @@ static const char *imx6ul_analog_reg_name(uint32_t reg) case USB_ANALOG_DIGPROG: return "USB_ANALOG_DIGPROG"; default: - sprintf(unknown, "%d ?", reg); + sprintf(unknown, "%u ?", reg); return unknown; } } -- 2.20.1 For M-profile CPUs, the range from 0xe0000000 to 0xe00fffff is the Private Peripheral Bus range, which includes all of the memory mapped devices and registers that are part of the CPU itself, including the NVIC, systick timer, and debug and trace components like the Data Watchpoint and Trace unit (DWT). Within this large region, the range 0xe000e000 to 0xe000efff is the System Control Space (NVIC, system registers, systick) and 0xe002e000 to 0exe002efff is its Non-secure alias. The architecture is clear that within the SCS unimplemented registers should be RES0 for privileged accesses and generate BusFault for unprivileged accesses, and we currently implement this. It is less clear about how to handle accesses to unimplemented regions of the wider PPB. Unprivileged accesses should definitely cause BusFaults (R_DQQS), but the behaviour of privileged accesses is not given as a general rule. However, the register definitions of individual registers for components like the DWT all state that they are RES0 if the relevant component is not implemented, so the simplest way to provide that is to provide RAZ/WI for the whole range for privileged accesses. (The v7M Arm ARM does say that reserved registers should be UNK/SBZP.) Expand the container MemoryRegion that the NVIC exposes so that it covers the whole PPB space. This means: * moving the address that the ARMV7M device maps it to down by 0xe000 bytes * moving the off and the offsets within the container of all the subregions forward by 0xe000 bytes * adding a new default MemoryRegion that covers the whole container at a lower priority than anything else and which provides the RAZWI/BusFault behaviour Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-2-peter.maydell@linaro.org --- include/hw/intc/armv7m_nvic.h | 1 + hw/arm/armv7m.c | 2 +- hw/intc/armv7m_nvic.c | 78 ++++++++++++++++++++++++++++++----- 3 files changed, 69 insertions(+), 12 deletions(-) diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/intc/armv7m_nvic.h +++ b/include/hw/intc/armv7m_nvic.h @@ -XXX,XX +XXX,XX @@ struct NVICState { MemoryRegion systickmem; MemoryRegion systick_ns_mem; MemoryRegion container; + MemoryRegion defaultmem; uint32_t num_irq; qemu_irq excpout; diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/armv7m.c +++ b/hw/arm/armv7m.c @@ -XXX,XX +XXX,XX @@ static void armv7m_realize(DeviceState *dev, Error **errp) sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ)); - memory_region_add_subregion(&s->container, 0xe000e000, + memory_region_add_subregion(&s->container, 0xe0000000, sysbus_mmio_get_region(sbd, 0)); for (i = 0; i < ARRAY_SIZE(s->bitband); i++) { diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static const MemoryRegionOps nvic_systick_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; +/* + * Unassigned portions of the PPB space are RAZ/WI for privileged + * accesses, and fault for non-privileged accesses. + */ +static MemTxResult ppb_default_read(void *opaque, hwaddr addr, + uint64_t *data, unsigned size, + MemTxAttrs attrs) +{ + qemu_log_mask(LOG_UNIMP, "Read of unassigned area of PPB: offset 0x%x\n", + (uint32_t)addr); + if (attrs.user) { + return MEMTX_ERROR; + } + *data = 0; + return MEMTX_OK; +} + +static MemTxResult ppb_default_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size, + MemTxAttrs attrs) +{ + qemu_log_mask(LOG_UNIMP, "Write of unassigned area of PPB: offset 0x%x\n", + (uint32_t)addr); + if (attrs.user) { + return MEMTX_ERROR; + } + return MEMTX_OK; +} + +static const MemoryRegionOps ppb_default_ops = { + .read_with_attrs = ppb_default_read, + .write_with_attrs = ppb_default_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid.min_access_size = 1, + .valid.max_access_size = 8, +}; + static int nvic_post_load(void *opaque, int version_id) { NVICState *s = opaque; @@ -XXX,XX +XXX,XX @@ static void nvic_systick_trigger(void *opaque, int n, int level) static void armv7m_nvic_realize(DeviceState *dev, Error **errp) { NVICState *s = NVIC(dev); - int regionlen; /* The armv7m container object will have set our CPU pointer */ if (!s->cpu || !arm_feature(&s->cpu->env, ARM_FEATURE_M)) { @@ -XXX,XX +XXX,XX @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp) M_REG_S)); } - /* The NVIC and System Control Space (SCS) starts at 0xe000e000 + /* + * This device provides a single sysbus memory region which + * represents the whole of the "System PPB" space. This is the + * range from 0xe0000000 to 0xe00fffff and includes the NVIC, + * the System Control Space (system registers), the systick timer, + * and for CPUs with the Security extension an NS banked version + * of all of these. + * + * The default behaviour for unimplemented registers/ranges + * (for instance the Data Watchpoint and Trace unit at 0xe0001000) + * is to RAZ/WI for privileged access and BusFault for non-privileged + * access. + * + * The NVIC and System Control Space (SCS) starts at 0xe000e000 * and looks like this: * 0x004 - ICTR * 0x010 - 0xff - systick @@ -XXX,XX +XXX,XX @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp) * generally code determining which banked register to use should * use attrs.secure; code determining actual behaviour of the system * should use env->v7m.secure. + * + * The container covers the whole PPB space. Within it the priority + * of overlapping regions is: + * - default region (for RAZ/WI and BusFault) : -1 + * - system register regions : 0 + * - systick : 1 + * This is because the systick device is a small block of registers + * in the middle of the other system control registers. */ - regionlen = arm_feature(&s->cpu->env, ARM_FEATURE_V8) ? 0x21000 : 0x1000; - memory_region_init(&s->container, OBJECT(s), "nvic", regionlen); - /* The system register region goes at the bottom of the priority - * stack as it covers the whole page. - */ + memory_region_init(&s->container, OBJECT(s), "nvic", 0x100000); + memory_region_init_io(&s->defaultmem, OBJECT(s), &ppb_default_ops, s, + "nvic-default", 0x100000); + memory_region_add_subregion_overlap(&s->container, 0, &s->defaultmem, -1); memory_region_init_io(&s->sysregmem, OBJECT(s), &nvic_sysreg_ops, s, "nvic_sysregs", 0x1000); - memory_region_add_subregion(&s->container, 0, &s->sysregmem); + memory_region_add_subregion(&s->container, 0xe000, &s->sysregmem); memory_region_init_io(&s->systickmem, OBJECT(s), &nvic_systick_ops, s, "nvic_systick", 0xe0); - memory_region_add_subregion_overlap(&s->container, 0x10, + memory_region_add_subregion_overlap(&s->container, 0xe010, &s->systickmem, 1); if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) { memory_region_init_io(&s->sysreg_ns_mem, OBJECT(s), &nvic_sysreg_ns_ops, &s->sysregmem, "nvic_sysregs_ns", 0x1000); - memory_region_add_subregion(&s->container, 0x20000, &s->sysreg_ns_mem); + memory_region_add_subregion(&s->container, 0x2e000, &s->sysreg_ns_mem); memory_region_init_io(&s->systick_ns_mem, OBJECT(s), &nvic_sysreg_ns_ops, &s->systickmem, "nvic_systick_ns", 0xe0); - memory_region_add_subregion_overlap(&s->container, 0x20010, + memory_region_add_subregion_overlap(&s->container, 0x2e010, &s->systick_ns_mem, 1); } -- 2.20.1 In v8.1M the PXN architecture extension adds a new PXN bit to the MPU_RLAR registers, which forbids execution of code in the region from a privileged mode. This is another feature which is just in the generic "in v8.1M" set and has no ID register field indicating its presence. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-3-peter.maydell@linaro.org --- target/arm/helper.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -XXX,XX +XXX,XX @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address, } else { uint32_t ap = extract32(env->pmsav8.rbar[secure][matchregion], 1, 2); uint32_t xn = extract32(env->pmsav8.rbar[secure][matchregion], 0, 1); + bool pxn = false; + + if (arm_feature(env, ARM_FEATURE_V8_1M)) { + pxn = extract32(env->pmsav8.rlar[secure][matchregion], 4, 1); + } if (m_is_system_region(env, address)) { /* System space is always execute never */ @@ -XXX,XX +XXX,XX @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address, } *prot = simple_ap_to_rw_prot(env, mmu_idx, ap); - if (*prot && !xn) { + if (*prot && !xn && !(pxn && !is_user)) { *prot |= PAGE_EXEC; } /* We don't need to look the attribute up in the MAIR0/MAIR1 -- 2.20.1 In arm_cpu_realizefn() we check whether the board code disabled EL3 via the has_el3 CPU object property, which we create if the CPU starts with the ARM_FEATURE_EL3 feature bit. If it is disabled, then we turn off ARM_FEATURE_EL3 and also zero out the relevant fields in the ID_PFR1 and ID_AA64PFR0 registers. This codepath was incorrectly being taken for M-profile CPUs, which do not have an EL3 and don't set ARM_FEATURE_EL3, but which may have the M-profile Security extension and so should have non-zero values in the ID_PFR1.Security field. Restrict the handling of the feature flag to A/R-profile cores. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-4-peter.maydell@linaro.org --- target/arm/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) } } - if (!cpu->has_el3) { + if (!arm_feature(env, ARM_FEATURE_M) && !cpu->has_el3) { /* If the has_el3 CPU property is disabled then we need to disable the * feature. */ -- 2.20.1 Implement the v8.1M VSCCLRM insn, which zeros floating point registers if there is an active floating point context. This requires support in write_neon_element32() for the MO_32 element size, so add it. Because we want to use arm_gen_condlabel(), we need to move the definition of that function up in translate.c so it is before the #include of translate-vfp.c.inc. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-5-peter.maydell@linaro.org --- target/arm/cpu.h | 9 ++++ target/arm/m-nocp.decode | 8 +++- target/arm/translate.c | 21 +++++---- target/arm/translate-vfp.c.inc | 84 ++++++++++++++++++++++++++++++++++ 4 files changed, 111 insertions(+), 11 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa32_mprofile(const ARMISARegisters *id) return FIELD_EX32(id->id_pfr1, ID_PFR1, MPROGMOD) != 0; } +static inline bool isar_feature_aa32_m_sec_state(const ARMISARegisters *id) +{ + /* + * Return true if M-profile state handling insns + * (VSCCLRM, CLRM, FPCTX access insns) are implemented + */ + return FIELD_EX32(id->id_pfr1, ID_PFR1, SECURITY) >= 3; +} + static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id) { /* Sadly this is encoded differently for A-profile and M-profile */ diff --git a/target/arm/m-nocp.decode b/target/arm/m-nocp.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m-nocp.decode +++ b/target/arm/m-nocp.decode @@ -XXX,XX +XXX,XX @@ # If the coprocessor is not present or disabled then we will generate # the NOCP exception; otherwise we let the insn through to the main decode. +%vd_dp 22:1 12:4 +%vd_sp 12:4 22:1 + &nocp cp { # Special cases which do not take an early NOCP: VLLDM and VLSTM VLLDM_VLSTM 1110 1100 001 l:1 rn:4 0000 1010 0000 0000 - # TODO: VSCCLRM (new in v8.1M) is similar: - #VSCCLRM 1110 1100 1-01 1111 ---- 1011 ---- ---0 + # VSCCLRM (new in v8.1M) is similar: + VSCCLRM 1110 1100 1.01 1111 .... 1011 imm:7 0 vd=%vd_dp size=3 + VSCCLRM 1110 1100 1.01 1111 .... 1010 imm:8 vd=%vd_sp size=2 NOCP 111- 1110 ---- ---- ---- cp:4 ---- ---- &nocp NOCP 111- 110- ---- ---- ---- cp:4 ---- ---- &nocp diff --git a/target/arm/translate.c b/target/arm/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -XXX,XX +XXX,XX @@ void arm_translate_init(void) a64_translate_init(); } +/* Generate a label used for skipping this instruction */ +static void arm_gen_condlabel(DisasContext *s) +{ + if (!s->condjmp) { + s->condlabel = gen_new_label(); + s->condjmp = 1; + } +} + /* Flags for the disas_set_da_iss info argument: * lower bits hold the Rt register number, higher bits are flags. */ @@ -XXX,XX +XXX,XX @@ static void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop) long off = neon_element_offset(reg, ele, memop); switch (memop) { + case MO_32: + tcg_gen_st32_i64(src, cpu_env, off); + break; case MO_64: tcg_gen_st_i64(src, cpu_env, off); break; @@ -XXX,XX +XXX,XX @@ static void gen_srs(DisasContext *s, s->base.is_jmp = DISAS_UPDATE_EXIT; } -/* Generate a label used for skipping this instruction */ -static void arm_gen_condlabel(DisasContext *s) -{ - if (!s->condjmp) { - s->condlabel = gen_new_label(); - s->condjmp = 1; - } -} - /* Skip this instruction if the ARM condition is false */ static void arm_skip_unless(DisasContext *s, uint32_t cond) { diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool trans_VLLDM_VLSTM(DisasContext *s, arg_VLLDM_VLSTM *a) return true; } +static bool trans_VSCCLRM(DisasContext *s, arg_VSCCLRM *a) +{ + int btmreg, topreg; + TCGv_i64 zero; + TCGv_i32 aspen, sfpa; + + if (!dc_isar_feature(aa32_m_sec_state, s)) { + /* Before v8.1M, fall through in decode to NOCP check */ + return false; + } + + /* Explicitly UNDEF because this takes precedence over NOCP */ + if (!arm_dc_feature(s, ARM_FEATURE_M_MAIN) || !s->v8m_secure) { + unallocated_encoding(s); + return true; + } + + if (!dc_isar_feature(aa32_vfp_simd, s)) { + /* NOP if we have neither FP nor MVE */ + return true; + } + + /* + * If FPCCR.ASPEN != 0 && CONTROL_S.SFPA == 0 then there is no + * active floating point context so we must NOP (without doing + * any lazy state preservation or the NOCP check). + */ + aspen = load_cpu_field(v7m.fpccr[M_REG_S]); + sfpa = load_cpu_field(v7m.control[M_REG_S]); + tcg_gen_andi_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); + tcg_gen_xori_i32(aspen, aspen, R_V7M_FPCCR_ASPEN_MASK); + tcg_gen_andi_i32(sfpa, sfpa, R_V7M_CONTROL_SFPA_MASK); + tcg_gen_or_i32(sfpa, sfpa, aspen); + arm_gen_condlabel(s); + tcg_gen_brcondi_i32(TCG_COND_EQ, sfpa, 0, s->condlabel); + + if (s->fp_excp_el != 0) { + gen_exception_insn(s, s->pc_curr, EXCP_NOCP, + syn_uncategorized(), s->fp_excp_el); + return true; + } + + topreg = a->vd + a->imm - 1; + btmreg = a->vd; + + /* Convert to Sreg numbers if the insn specified in Dregs */ + if (a->size == 3) { + topreg = topreg * 2 + 1; + btmreg *= 2; + } + + if (topreg > 63 || (topreg > 31 && !(topreg & 1))) { + /* UNPREDICTABLE: we choose to undef */ + unallocated_encoding(s); + return true; + } + + /* Silently ignore requests to clear D16-D31 if they don't exist */ + if (topreg > 31 && !dc_isar_feature(aa32_simd_r32, s)) { + topreg = 31; + } + + if (!vfp_access_check(s)) { + return true; + } + + /* Zero the Sregs from btmreg to topreg inclusive. */ + zero = tcg_const_i64(0); + if (btmreg & 1) { + write_neon_element64(zero, btmreg >> 1, 1, MO_32); + btmreg++; + } + for (; btmreg + 1 <= topreg; btmreg += 2) { + write_neon_element64(zero, btmreg >> 1, 0, MO_64); + } + if (btmreg == topreg) { + write_neon_element64(zero, btmreg >> 1, 0, MO_32); + btmreg++; + } + assert(btmreg == topreg + 1); + /* TODO: when MVE is implemented, zero VPR here */ + return true; +} + static bool trans_NOCP(DisasContext *s, arg_nocp *a) { /* -- 2.20.1 In v8.1M the new CLRM instruction allows zeroing an arbitrary set of the general-purpose registers and APSR. Implement this. The encoding is a subset of the LDMIA T2 encoding, using what would be Rn=0b1111 (which UNDEFs for LDMIA). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-6-peter.maydell@linaro.org --- target/arm/t32.decode | 6 +++++- target/arm/translate.c | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+), 1 deletion(-) diff --git a/target/arm/t32.decode b/target/arm/t32.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/t32.decode +++ b/target/arm/t32.decode @@ -XXX,XX +XXX,XX @@ UXTAB 1111 1010 0101 .... 1111 .... 10.. .... @rrr_rot STM_t32 1110 1000 10.0 .... ................ @ldstm i=1 b=0 STM_t32 1110 1001 00.0 .... ................ @ldstm i=0 b=1 -LDM_t32 1110 1000 10.1 .... ................ @ldstm i=1 b=0 +{ + # Rn=15 UNDEFs for LDM; M-profile CLRM uses that encoding + CLRM 1110 1000 1001 1111 list:16 + LDM_t32 1110 1000 10.1 .... ................ @ldstm i=1 b=0 +} LDM_t32 1110 1001 00.1 .... ................ @ldstm i=0 b=1 &rfe !extern rn w pu diff --git a/target/arm/translate.c b/target/arm/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -XXX,XX +XXX,XX @@ static bool trans_LDM_t16(DisasContext *s, arg_ldst_block *a) return do_ldm(s, a, 1); } +static bool trans_CLRM(DisasContext *s, arg_CLRM *a) +{ + int i; + TCGv_i32 zero; + + if (!dc_isar_feature(aa32_m_sec_state, s)) { + return false; + } + + if (extract32(a->list, 13, 1)) { + return false; + } + + if (!a->list) { + /* UNPREDICTABLE; we choose to UNDEF */ + return false; + } + + zero = tcg_const_i32(0); + for (i = 0; i < 15; i++) { + if (extract32(a->list, i, 1)) { + /* Clear R[i] */ + tcg_gen_mov_i32(cpu_R[i], zero); + } + } + if (extract32(a->list, 15, 1)) { + /* + * Clear APSR (by calling the MSR helper with the same argument + * as for "MSR APSR_nzcvqg, Rn": mask = 0b1100, SYSM=0) + */ + TCGv_i32 maskreg = tcg_const_i32(0xc << 8); + gen_helper_v7m_msr(cpu_env, maskreg, zero); + tcg_temp_free_i32(maskreg); + } + tcg_temp_free_i32(zero); + return true; +} + /* * Branch, branch with link */ -- 2.20.1 For M-profile before v8.1M, the only valid register for VMSR/VMRS is the FPSCR. We have a comment that states this, but the actual logic to forbid accesses for any other register value is missing, so we would end up with A-profile style behaviour. Add the missing check. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-7-peter.maydell@linaro.org --- target/arm/translate-vfp.c.inc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool trans_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a) * Accesses to R15 are UNPREDICTABLE; we choose to undef. * (FPSCR -> r15 is a special case which writes to the PSR flags.) */ - if (a->rt == 15 && (!a->l || a->reg != ARM_VFP_FPSCR)) { + if (a->reg != ARM_VFP_FPSCR) { + return false; + } + if (a->rt == 15 && !a->l) { return false; } } -- 2.20.1 Currently M-profile borrows the A-profile code for VMSR and VMRS (access to the FP system registers), because all it needs to support is the FPSCR. In v8.1M things become significantly more complicated in two ways: * there are several new FP system registers; some have side effects on read, and one (FPCXT_NS) needs to avoid the usual vfp_access_check() and the "only if FPU implemented" check * all sysregs are now accessible both by VMRS/VMSR (which reads/writes a general purpose register) and also by VLDR/VSTR (which reads/writes them directly to memory) Refactor the structure of how we handle VMSR/VMRS to cope with this: * keep the M-profile code entirely separate from the A-profile code * abstract out the "read or write the general purpose register" part of the code into a loadfn or storefn function pointer, so we can reuse it for VLDR/VSTR. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-8-peter.maydell@linaro.org --- target/arm/cpu.h | 3 + target/arm/translate-vfp.c.inc | 182 ++++++++++++++++++++++++++++++--- 2 files changed, 171 insertions(+), 14 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ enum arm_cpu_mode { #define ARM_VFP_FPINST 9 #define ARM_VFP_FPINST2 10 +/* QEMU-internal value meaning "FPSCR, but we care only about NZCV" */ +#define QEMU_VFP_FPSCR_NZCV 0xffff + /* iwMMXt coprocessor control registers. */ #define ARM_IWMMXT_wCID 0 #define ARM_IWMMXT_wCon 1 diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool trans_VDUP(DisasContext *s, arg_VDUP *a) return true; } +/* + * M-profile provides two different sets of instructions that can + * access floating point system registers: VMSR/VMRS (which move + * to/from a general purpose register) and VLDR/VSTR sysreg (which + * move directly to/from memory). In some cases there are also side + * effects which must happen after any write to memory (which could + * cause an exception). So we implement the common logic for the + * sysreg access in gen_M_fp_sysreg_write() and gen_M_fp_sysreg_read(), + * which take pointers to callback functions which will perform the + * actual "read/write general purpose register" and "read/write + * memory" operations. + */ + +/* + * Emit code to store the sysreg to its final destination; frees the + * TCG temp 'value' it is passed. + */ +typedef void fp_sysreg_storefn(DisasContext *s, void *opaque, TCGv_i32 value); +/* + * Emit code to load the value to be copied to the sysreg; returns + * a new TCG temporary + */ +typedef TCGv_i32 fp_sysreg_loadfn(DisasContext *s, void *opaque); + +/* Common decode/access checks for fp sysreg read/write */ +typedef enum FPSysRegCheckResult { + FPSysRegCheckFailed, /* caller should return false */ + FPSysRegCheckDone, /* caller should return true */ + FPSysRegCheckContinue, /* caller should continue generating code */ +} FPSysRegCheckResult; + +static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) +{ + if (!dc_isar_feature(aa32_fpsp_v2, s)) { + return FPSysRegCheckFailed; + } + + switch (regno) { + case ARM_VFP_FPSCR: + case QEMU_VFP_FPSCR_NZCV: + break; + default: + return FPSysRegCheckFailed; + } + + if (!vfp_access_check(s)) { + return FPSysRegCheckDone; + } + + return FPSysRegCheckContinue; +} + +static bool gen_M_fp_sysreg_write(DisasContext *s, int regno, + + fp_sysreg_loadfn *loadfn, + void *opaque) +{ + /* Do a write to an M-profile floating point system register */ + TCGv_i32 tmp; + + switch (fp_sysreg_checks(s, regno)) { + case FPSysRegCheckFailed: + return false; + case FPSysRegCheckDone: + return true; + case FPSysRegCheckContinue: + break; + } + + switch (regno) { + case ARM_VFP_FPSCR: + tmp = loadfn(s, opaque); + gen_helper_vfp_set_fpscr(cpu_env, tmp); + tcg_temp_free_i32(tmp); + gen_lookup_tb(s); + break; + default: + g_assert_not_reached(); + } + return true; +} + +static bool gen_M_fp_sysreg_read(DisasContext *s, int regno, + fp_sysreg_storefn *storefn, + void *opaque) +{ + /* Do a read from an M-profile floating point system register */ + TCGv_i32 tmp; + + switch (fp_sysreg_checks(s, regno)) { + case FPSysRegCheckFailed: + return false; + case FPSysRegCheckDone: + return true; + case FPSysRegCheckContinue: + break; + } + + switch (regno) { + case ARM_VFP_FPSCR: + tmp = tcg_temp_new_i32(); + gen_helper_vfp_get_fpscr(tmp, cpu_env); + storefn(s, opaque, tmp); + break; + case QEMU_VFP_FPSCR_NZCV: + /* + * Read just NZCV; this is a special case to avoid the + * helper call for the "VMRS to CPSR.NZCV" insn. + */ + tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]); + tcg_gen_andi_i32(tmp, tmp, 0xf0000000); + storefn(s, opaque, tmp); + break; + default: + g_assert_not_reached(); + } + return true; +} + +static void fp_sysreg_to_gpr(DisasContext *s, void *opaque, TCGv_i32 value) +{ + arg_VMSR_VMRS *a = opaque; + + if (a->rt == 15) { + /* Set the 4 flag bits in the CPSR */ + gen_set_nzcv(value); + tcg_temp_free_i32(value); + } else { + store_reg(s, a->rt, value); + } +} + +static TCGv_i32 gpr_to_fp_sysreg(DisasContext *s, void *opaque) +{ + arg_VMSR_VMRS *a = opaque; + + return load_reg(s, a->rt); +} + +static bool gen_M_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a) +{ + /* + * Accesses to R15 are UNPREDICTABLE; we choose to undef. + * FPSCR -> r15 is a special case which writes to the PSR flags; + * set a->reg to a special value to tell gen_M_fp_sysreg_read() + * we only care about the top 4 bits of FPSCR there. + */ + if (a->rt == 15) { + if (a->l && a->reg == ARM_VFP_FPSCR) { + a->reg = QEMU_VFP_FPSCR_NZCV; + } else { + return false; + } + } + + if (a->l) { + /* VMRS, move FP system register to gp register */ + return gen_M_fp_sysreg_read(s, a->reg, fp_sysreg_to_gpr, a); + } else { + /* VMSR, move gp register to FP system register */ + return gen_M_fp_sysreg_write(s, a->reg, gpr_to_fp_sysreg, a); + } +} + static bool trans_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a) { TCGv_i32 tmp; bool ignore_vfp_enabled = false; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { - return false; + if (arm_dc_feature(s, ARM_FEATURE_M)) { + return gen_M_VMSR_VMRS(s, a); } - if (arm_dc_feature(s, ARM_FEATURE_M)) { - /* - * The only M-profile VFP vmrs/vmsr sysreg is FPSCR. - * Accesses to R15 are UNPREDICTABLE; we choose to undef. - * (FPSCR -> r15 is a special case which writes to the PSR flags.) - */ - if (a->reg != ARM_VFP_FPSCR) { - return false; - } - if (a->rt == 15 && !a->l) { - return false; - } + if (!dc_isar_feature(aa32_fpsp_v2, s)) { + return false; } switch (a->reg) { -- 2.20.1 The constant-expander functions like negate, plus_2, etc, are generally useful; move them up in translate.c so we can use them in the VFP/Neon decoders as well as in the A32/T32/T16 decoders. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-9-peter.maydell@linaro.org --- target/arm/translate.c | 46 +++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 21 deletions(-) diff --git a/target/arm/translate.c b/target/arm/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -XXX,XX +XXX,XX @@ static void arm_gen_condlabel(DisasContext *s) } } +/* + * Constant expanders for the decoders. + */ + +static int negate(DisasContext *s, int x) +{ + return -x; +} + +static int plus_2(DisasContext *s, int x) +{ + return x + 2; +} + +static int times_2(DisasContext *s, int x) +{ + return x * 2; +} + +static int times_4(DisasContext *s, int x) +{ + return x * 4; +} + /* Flags for the disas_set_da_iss info argument: * lower bits hold the Rt register number, higher bits are flags. */ @@ -XXX,XX +XXX,XX @@ static void arm_skip_unless(DisasContext *s, uint32_t cond) /* - * Constant expanders for the decoders. + * Constant expanders used by T16/T32 decode */ -static int negate(DisasContext *s, int x) -{ - return -x; -} - -static int plus_2(DisasContext *s, int x) -{ - return x + 2; -} - -static int times_2(DisasContext *s, int x) -{ - return x * 2; -} - -static int times_4(DisasContext *s, int x) -{ - return x * 4; -} - /* Return only the rotation part of T32ExpandImm. */ static int t32_expandimm_rot(DisasContext *s, int x) { -- 2.20.1 Implement the new-in-v8.1M VLDR/VSTR variants which directly read or write FP system registers to memory. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-10-peter.maydell@linaro.org --- target/arm/vfp.decode | 14 ++++++ target/arm/translate-vfp.c.inc | 91 ++++++++++++++++++++++++++++++++++ 2 files changed, 105 insertions(+) diff --git a/target/arm/vfp.decode b/target/arm/vfp.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vfp.decode +++ b/target/arm/vfp.decode @@ -XXX,XX +XXX,XX @@ VLDR_VSTR_hp ---- 1101 u:1 .0 l:1 rn:4 .... 1001 imm:8 vd=%vd_sp VLDR_VSTR_sp ---- 1101 u:1 .0 l:1 rn:4 .... 1010 imm:8 vd=%vd_sp VLDR_VSTR_dp ---- 1101 u:1 .0 l:1 rn:4 .... 1011 imm:8 vd=%vd_dp +# M-profile VLDR/VSTR to sysreg +%vldr_sysreg 22:1 13:3 +%imm7_0x4 0:7 !function=times_4 + +&vldr_sysreg rn reg imm a w p +@vldr_sysreg .... ... . a:1 . . . rn:4 ... . ... .. ....... \ + reg=%vldr_sysreg imm=%imm7_0x4 &vldr_sysreg + +# P=0 W=0 is SEE "Related encodings", so split into two patterns +VLDR_sysreg ---- 110 1 . . w:1 1 .... ... 0 111 11 ....... @vldr_sysreg p=1 +VLDR_sysreg ---- 110 0 . . 1 1 .... ... 0 111 11 ....... @vldr_sysreg p=0 w=1 +VSTR_sysreg ---- 110 1 . . w:1 0 .... ... 0 111 11 ....... @vldr_sysreg p=1 +VSTR_sysreg ---- 110 0 . . 1 0 .... ... 0 111 11 ....... @vldr_sysreg p=0 w=1 + # We split the load/store multiple up into two patterns to avoid # overlap with other insns in the "Advanced SIMD load/store and 64-bit move" # grouping: diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool trans_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a) return true; } +static void fp_sysreg_to_memory(DisasContext *s, void *opaque, TCGv_i32 value) +{ + arg_vldr_sysreg *a = opaque; + uint32_t offset = a->imm; + TCGv_i32 addr; + + if (!a->a) { + offset = - offset; + } + + addr = load_reg(s, a->rn); + if (a->p) { + tcg_gen_addi_i32(addr, addr, offset); + } + + if (s->v8m_stackcheck && a->rn == 13 && a->w) { + gen_helper_v8m_stackcheck(cpu_env, addr); + } + + gen_aa32_st_i32(s, value, addr, get_mem_index(s), + MO_UL | MO_ALIGN | s->be_data); + tcg_temp_free_i32(value); + + if (a->w) { + /* writeback */ + if (!a->p) { + tcg_gen_addi_i32(addr, addr, offset); + } + store_reg(s, a->rn, addr); + } else { + tcg_temp_free_i32(addr); + } +} + +static TCGv_i32 memory_to_fp_sysreg(DisasContext *s, void *opaque) +{ + arg_vldr_sysreg *a = opaque; + uint32_t offset = a->imm; + TCGv_i32 addr; + TCGv_i32 value = tcg_temp_new_i32(); + + if (!a->a) { + offset = - offset; + } + + addr = load_reg(s, a->rn); + if (a->p) { + tcg_gen_addi_i32(addr, addr, offset); + } + + if (s->v8m_stackcheck && a->rn == 13 && a->w) { + gen_helper_v8m_stackcheck(cpu_env, addr); + } + + gen_aa32_ld_i32(s, value, addr, get_mem_index(s), + MO_UL | MO_ALIGN | s->be_data); + + if (a->w) { + /* writeback */ + if (!a->p) { + tcg_gen_addi_i32(addr, addr, offset); + } + store_reg(s, a->rn, addr); + } else { + tcg_temp_free_i32(addr); + } + return value; +} + +static bool trans_VLDR_sysreg(DisasContext *s, arg_vldr_sysreg *a) +{ + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + if (a->rn == 15) { + return false; + } + return gen_M_fp_sysreg_write(s, a->reg, memory_to_fp_sysreg, a); +} + +static bool trans_VSTR_sysreg(DisasContext *s, arg_vldr_sysreg *a) +{ + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + if (a->rn == 15) { + return false; + } + return gen_M_fp_sysreg_read(s, a->reg, fp_sysreg_to_memory, a); +} + static bool trans_VMOV_half(DisasContext *s, arg_VMOV_single *a) { TCGv_i32 tmp; -- 2.20.1 v8.1M defines a new FP system register FPSCR_nzcvqc; this behaves like the existing FPSCR, except that it reads and writes only bits [31:27] of the FPSCR (the N, Z, C, V and QC flag bits). (Unlike the FPSCR, the special case for Rt=15 of writing the CPSR.NZCV is not permitted.) Implement the register. Since we don't yet implement MVE, we handle the QC bit as RES0, with todo comments for where we will need to add support later. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-11-peter.maydell@linaro.org --- target/arm/cpu.h | 13 +++++++++++++ target/arm/translate-vfp.c.inc | 27 +++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ void vfp_set_fpscr(CPUARMState *env, uint32_t val); #define FPCR_FZ (1 << 24) /* Flush-to-zero enable bit */ #define FPCR_DN (1 << 25) /* Default NaN enable bit */ #define FPCR_QC (1 << 27) /* Cumulative saturation bit */ +#define FPCR_V (1 << 28) /* FP overflow flag */ +#define FPCR_C (1 << 29) /* FP carry flag */ +#define FPCR_Z (1 << 30) /* FP zero flag */ +#define FPCR_N (1 << 31) /* FP negative flag */ + +#define FPCR_NZCV_MASK (FPCR_N | FPCR_Z | FPCR_C | FPCR_V) +#define FPCR_NZCVQC_MASK (FPCR_NZCV_MASK | FPCR_QC) static inline uint32_t vfp_get_fpsr(CPUARMState *env) { @@ -XXX,XX +XXX,XX @@ enum arm_cpu_mode { #define ARM_VFP_FPEXC 8 #define ARM_VFP_FPINST 9 #define ARM_VFP_FPINST2 10 +/* These ones are M-profile only */ +#define ARM_VFP_FPSCR_NZCVQC 2 +#define ARM_VFP_VPR 12 +#define ARM_VFP_P0 13 +#define ARM_VFP_FPCXT_NS 14 +#define ARM_VFP_FPCXT_S 15 /* QEMU-internal value meaning "FPSCR, but we care only about NZCV" */ #define QEMU_VFP_FPSCR_NZCV 0xffff diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) case ARM_VFP_FPSCR: case QEMU_VFP_FPSCR_NZCV: break; + case ARM_VFP_FPSCR_NZCVQC: + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + break; default: return FPSysRegCheckFailed; } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_write(DisasContext *s, int regno, tcg_temp_free_i32(tmp); gen_lookup_tb(s); break; + case ARM_VFP_FPSCR_NZCVQC: + { + TCGv_i32 fpscr; + tmp = loadfn(s, opaque); + /* + * TODO: when we implement MVE, write the QC bit. + * For non-MVE, QC is RES0. + */ + tcg_gen_andi_i32(tmp, tmp, FPCR_NZCV_MASK); + fpscr = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]); + tcg_gen_andi_i32(fpscr, fpscr, ~FPCR_NZCV_MASK); + tcg_gen_or_i32(fpscr, fpscr, tmp); + store_cpu_field(fpscr, vfp.xregs[ARM_VFP_FPSCR]); + tcg_temp_free_i32(tmp); + break; + } default: g_assert_not_reached(); } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_read(DisasContext *s, int regno, gen_helper_vfp_get_fpscr(tmp, cpu_env); storefn(s, opaque, tmp); break; + case ARM_VFP_FPSCR_NZCVQC: + /* + * TODO: MVE has a QC bit, which we probably won't store + * in the xregs[] field. For non-MVE, where QC is RES0, + * we can just fall through to the FPSCR_NZCV case. + */ case QEMU_VFP_FPSCR_NZCV: /* * Read just NZCV; this is a special case to avoid the -- 2.20.1 We defined a constant name for the mask of NZCV bits in the FPCR/FPSCR in the previous commit; use it in a couple of places in existing code, where we're masking out everything except NZCV for the "load to Rt=15 sets CPSR.NZCV" special case. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-12-peter.maydell@linaro.org --- target/arm/translate-vfp.c.inc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_read(DisasContext *s, int regno, * helper call for the "VMRS to CPSR.NZCV" insn. */ tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]); - tcg_gen_andi_i32(tmp, tmp, 0xf0000000); + tcg_gen_andi_i32(tmp, tmp, FPCR_NZCV_MASK); storefn(s, opaque, tmp); break; default: @@ -XXX,XX +XXX,XX @@ static bool trans_VMSR_VMRS(DisasContext *s, arg_VMSR_VMRS *a) case ARM_VFP_FPSCR: if (a->rt == 15) { tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]); - tcg_gen_andi_i32(tmp, tmp, 0xf0000000); + tcg_gen_andi_i32(tmp, tmp, FPCR_NZCV_MASK); } else { tmp = tcg_temp_new_i32(); gen_helper_vfp_get_fpscr(tmp, cpu_env); -- 2.20.1 Factor out the code which handles M-profile lazy FP state preservation from full_vfp_access_check(); accesses to the FPCXT_NS register are a special case which need to do just this part (corresponding in the pseudocode to the PreserveFPState() function), and not the full set of actions matching the pseudocode ExecuteFPCheck() which normal FP instructions need to do. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20201119215617.29887-13-peter.maydell@linaro.org --- target/arm/translate-vfp.c.inc | 45 ++++++++++++++++++++-------------- 1 file changed, 27 insertions(+), 18 deletions(-) diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static inline long vfp_f16_offset(unsigned reg, bool top) return offs; } +/* + * Generate code for M-profile lazy FP state preservation if needed; + * this corresponds to the pseudocode PreserveFPState() function. + */ +static void gen_preserve_fp_state(DisasContext *s) +{ + if (s->v7m_lspact) { + /* + * Lazy state saving affects external memory and also the NVIC, + * so we must mark it as an IO operation for icount (and cause + * this to be the last insn in the TB). + */ + if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { + s->base.is_jmp = DISAS_UPDATE_EXIT; + gen_io_start(); + } + gen_helper_v7m_preserve_fp_state(cpu_env); + /* + * If the preserve_fp_state helper doesn't throw an exception + * then it will clear LSPACT; we don't need to repeat this for + * any further FP insns in this TB. + */ + s->v7m_lspact = false; + } +} + /* * Check that VFP access is enabled. If it is, do the necessary * M-profile lazy-FP handling and then return true. @@ -XXX,XX +XXX,XX @@ static bool full_vfp_access_check(DisasContext *s, bool ignore_vfp_enabled) /* Handle M-profile lazy FP state mechanics */ /* Trigger lazy-state preservation if necessary */ - if (s->v7m_lspact) { - /* - * Lazy state saving affects external memory and also the NVIC, - * so we must mark it as an IO operation for icount (and cause - * this to be the last insn in the TB). - */ - if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) { - s->base.is_jmp = DISAS_UPDATE_EXIT; - gen_io_start(); - } - gen_helper_v7m_preserve_fp_state(cpu_env); - /* - * If the preserve_fp_state helper doesn't throw an exception - * then it will clear LSPACT; we don't need to repeat this for - * any further FP insns in this TB. - */ - s->v7m_lspact = false; - } + gen_preserve_fp_state(s); /* Update ownership of FP context: set FPCCR.S to match current state */ if (s->v8m_fpccr_s_wrong) { -- 2.20.1 Implement the new-in-v8.1M FPCXT_S floating point system register. This is for saving and restoring the secure floating point context, and it reads and writes bits [27:0] from the FPSCR and the CONTROL.SFPA bit in bit [31]. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-14-peter.maydell@linaro.org --- target/arm/translate-vfp.c.inc | 58 ++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) return false; } break; + case ARM_VFP_FPCXT_S: + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + if (!s->v8m_secure) { + return false; + } + break; default: return FPSysRegCheckFailed; } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_write(DisasContext *s, int regno, tcg_temp_free_i32(tmp); break; } + case ARM_VFP_FPCXT_S: + { + TCGv_i32 sfpa, control, fpscr; + /* Set FPSCR[27:0] and CONTROL.SFPA from value */ + tmp = loadfn(s, opaque); + sfpa = tcg_temp_new_i32(); + tcg_gen_shri_i32(sfpa, tmp, 31); + control = load_cpu_field(v7m.control[M_REG_S]); + tcg_gen_deposit_i32(control, control, sfpa, + R_V7M_CONTROL_SFPA_SHIFT, 1); + store_cpu_field(control, v7m.control[M_REG_S]); + fpscr = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]); + tcg_gen_andi_i32(fpscr, fpscr, FPCR_NZCV_MASK); + tcg_gen_andi_i32(tmp, tmp, ~FPCR_NZCV_MASK); + tcg_gen_or_i32(fpscr, fpscr, tmp); + store_cpu_field(fpscr, vfp.xregs[ARM_VFP_FPSCR]); + tcg_temp_free_i32(tmp); + tcg_temp_free_i32(sfpa); + break; + } default: g_assert_not_reached(); } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_read(DisasContext *s, int regno, tcg_gen_andi_i32(tmp, tmp, FPCR_NZCV_MASK); storefn(s, opaque, tmp); break; + case ARM_VFP_FPCXT_S: + { + TCGv_i32 control, sfpa, fpscr; + /* Bits [27:0] from FPSCR, bit [31] from CONTROL.SFPA */ + tmp = tcg_temp_new_i32(); + sfpa = tcg_temp_new_i32(); + gen_helper_vfp_get_fpscr(tmp, cpu_env); + tcg_gen_andi_i32(tmp, tmp, ~FPCR_NZCV_MASK); + control = load_cpu_field(v7m.control[M_REG_S]); + tcg_gen_andi_i32(sfpa, control, R_V7M_CONTROL_SFPA_MASK); + tcg_gen_shli_i32(sfpa, sfpa, 31 - R_V7M_CONTROL_SFPA_SHIFT); + tcg_gen_or_i32(tmp, tmp, sfpa); + tcg_temp_free_i32(sfpa); + /* + * Store result before updating FPSCR etc, in case + * it is a memory write which causes an exception. + */ + storefn(s, opaque, tmp); + /* + * Now we must reset FPSCR from FPDSCR_NS, and clear + * CONTROL.SFPA; so we'll end the TB here. + */ + tcg_gen_andi_i32(control, control, ~R_V7M_CONTROL_SFPA_MASK); + store_cpu_field(control, v7m.control[M_REG_S]); + fpscr = load_cpu_field(v7m.fpdscr[M_REG_NS]); + gen_helper_vfp_set_fpscr(cpu_env, fpscr); + tcg_temp_free_i32(fpscr); + gen_lookup_tb(s); + break; + } default: g_assert_not_reached(); } -- 2.20.1 The FPDSCR register has a similar layout to the FPSCR. In v8.1M it gains new fields FZ16 (if half-precision floating point is supported) and LTPSIZE (always reads as 4). Update the reset value and the code that handles writes to this register accordingly. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-16-peter.maydell@linaro.org --- target/arm/cpu.h | 5 +++++ hw/intc/armv7m_nvic.c | 9 ++++++++- target/arm/cpu.c | 3 +++ 3 files changed, 16 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ void vfp_set_fpscr(CPUARMState *env, uint32_t val); #define FPCR_IXE (1 << 12) /* Inexact exception trap enable */ #define FPCR_IDE (1 << 15) /* Input Denormal exception trap enable */ #define FPCR_FZ16 (1 << 19) /* ARMv8.2+, FP16 flush-to-zero */ +#define FPCR_RMODE_MASK (3 << 22) /* Rounding mode */ #define FPCR_FZ (1 << 24) /* Flush-to-zero enable bit */ #define FPCR_DN (1 << 25) /* Default NaN enable bit */ +#define FPCR_AHP (1 << 26) /* Alternative half-precision */ #define FPCR_QC (1 << 27) /* Cumulative saturation bit */ #define FPCR_V (1 << 28) /* FP overflow flag */ #define FPCR_C (1 << 29) /* FP carry flag */ #define FPCR_Z (1 << 30) /* FP zero flag */ #define FPCR_N (1 << 31) /* FP negative flag */ +#define FPCR_LTPSIZE_SHIFT 16 /* LTPSIZE, M-profile only */ +#define FPCR_LTPSIZE_MASK (7 << FPCR_LTPSIZE_SHIFT) + #define FPCR_NZCV_MASK (FPCR_N | FPCR_Z | FPCR_C | FPCR_V) #define FPCR_NZCVQC_MASK (FPCR_NZCV_MASK | FPCR_QC) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, break; case 0xf3c: /* FPDSCR */ if (cpu_isar_feature(aa32_vfp_simd, cpu)) { - value &= 0x07c00000; + uint32_t mask = FPCR_AHP | FPCR_DN | FPCR_FZ | FPCR_RMODE_MASK; + if (cpu_isar_feature(any_fp16, cpu)) { + mask |= FPCR_FZ16; + } + value &= mask; + if (cpu_isar_feature(aa32_lob, cpu)) { + value |= 4 << FPCR_LTPSIZE_SHIFT; + } cpu->env.v7m.fpdscr[attrs.secure] = value; } break; diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ static void arm_cpu_reset(DeviceState *dev) * always reset to 4. */ env->v7m.ltpsize = 4; + /* The LTPSIZE field in FPDSCR is constant and reads as 4. */ + env->v7m.fpdscr[M_REG_NS] = 4 << FPCR_LTPSIZE_SHIFT; + env->v7m.fpdscr[M_REG_S] = 4 << FPCR_LTPSIZE_SHIFT; } if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { -- 2.20.1 In v8.0M, on exception entry the registers R0-R3, R12, APSR and EPSR are zeroed for an exception taken to Non-secure state; for an exception taken to Secure state they become UNKNOWN, and we chose to leave them at their previous values. In v8.1M the behaviour is specified more tightly and these registers are always zeroed regardless of the security state that the exception targets (see rule R_KPZV). Implement this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-17-peter.maydell@linaro.org --- target/arm/m_helper.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m_helper.c +++ b/target/arm/m_helper.c @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, * Clear registers if necessary to prevent non-secure exception * code being able to see register values from secure code. * Where register values become architecturally UNKNOWN we leave - * them with their previous values. + * them with their previous values. v8.1M is tighter than v8.0M + * here and always zeroes the caller-saved registers regardless + * of the security state the exception is targeting. */ if (arm_feature(env, ARM_FEATURE_M_SECURITY)) { - if (!targets_secure) { + if (!targets_secure || arm_feature(env, ARM_FEATURE_V8_1M)) { /* * Always clear the caller-saved registers (they have been * pushed to the stack earlier in v7m_push_stack()). @@ -XXX,XX +XXX,XX @@ static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr, bool dotailchain, * v7m_push_callee_stack()). */ int i; + /* + * r4..r11 are callee-saves, zero only if background + * state was Secure (EXCRET.S == 1) and exception + * targets Non-secure state + */ + bool zero_callee_saves = !targets_secure && + (lr & R_V7M_EXCRET_S_MASK); for (i = 0; i < 13; i++) { - /* r4..r11 are callee-saves, zero only if EXCRET.S == 1 */ - if (i < 4 || i > 11 || (lr & R_V7M_EXCRET_S_MASK)) { + if (i < 4 || i > 11 || zero_callee_saves) { env->regs[i] = 0; } } -- 2.20.1 In v8.1M, vector table fetch failures don't set HFSR.FORCED (see rule R_LLRP). (In previous versions of the architecture this was either required or IMPDEF.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-18-peter.maydell@linaro.org --- target/arm/m_helper.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m_helper.c +++ b/target/arm/m_helper.c @@ -XXX,XX +XXX,XX @@ load_fail: * The HardFault is Secure if BFHFNMINS is 0 (meaning that all HFs are * secure); otherwise it targets the same security state as the * underlying exception. + * In v8.1M HardFaults from vector table fetch fails don't set FORCED. */ if (!(cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK)) { exc_secure = true; } - env->v7m.hfsr |= R_V7M_HFSR_VECTTBL_MASK | R_V7M_HFSR_FORCED_MASK; + env->v7m.hfsr |= R_V7M_HFSR_VECTTBL_MASK; + if (!arm_feature(env, ARM_FEATURE_V8_1M)) { + env->v7m.hfsr |= R_V7M_HFSR_FORCED_MASK; + } armv7m_nvic_set_pending_derived(env->nvic, ARMV7M_EXCP_HARD, exc_secure); return false; } -- 2.20.1 In v8.1M a REVIDR register is defined, which is at address 0xe00ecfc and is a read-only IMPDEF register providing implementation specific minor revision information, like the v8A REVIDR_EL1. Implement this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-19-peter.maydell@linaro.org --- hw/intc/armv7m_nvic.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs) } return val; } + case 0xcfc: + if (!arm_feature(&cpu->env, ARM_FEATURE_V8_1M)) { + goto bad_offset; + } + return cpu->revidr; case 0xd00: /* CPUID Base. */ return cpu->midr; case 0xd04: /* Interrupt Control State (ICSR) */ -- 2.20.1 In v8.1M a new exception return check is added which may cause a NOCP UsageFault (see rule R_XLTP): before we clear s0..s15 and the FPSCR we must check whether access to CP10 from the Security state of the returning exception is disabled; if it is then we must take a fault. (Note that for our implementation CPPWR is always RAZ/WI and so can never cause CP10 accesses to fail.) The other v8.1M change to this register-clearing code is that if MVE is implemented VPR must also be cleared, so add a TODO comment to that effect. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-20-peter.maydell@linaro.org --- target/arm/m_helper.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m_helper.c +++ b/target/arm/m_helper.c @@ -XXX,XX +XXX,XX @@ static void do_v7m_exception_exit(ARMCPU *cpu) v7m_exception_taken(cpu, excret, true, false); return; } else { - /* Clear s0..s15 and FPSCR */ + if (arm_feature(env, ARM_FEATURE_V8_1M)) { + /* v8.1M adds this NOCP check */ + bool nsacr_pass = exc_secure || + extract32(env->v7m.nsacr, 10, 1); + bool cpacr_pass = v7m_cpacr_pass(env, exc_secure, true); + if (!nsacr_pass) { + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, true); + env->v7m.cfsr[M_REG_S] |= R_V7M_CFSR_NOCP_MASK; + qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " + "stackframe: NSACR prevents clearing FPU registers\n"); + v7m_exception_taken(cpu, excret, true, false); + } else if (!cpacr_pass) { + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, + exc_secure); + env->v7m.cfsr[exc_secure] |= R_V7M_CFSR_NOCP_MASK; + qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing " + "stackframe: CPACR prevents clearing FPU registers\n"); + v7m_exception_taken(cpu, excret, true, false); + } + } + /* Clear s0..s15 and FPSCR; TODO also VPR when MVE is implemented */ int i; for (i = 0; i < 16; i += 2) { -- 2.20.1 v8.1M adds new encodings of VLLDM and VLSTM (where bit 7 is set). The only difference is that: * the old T1 encodings UNDEF if the implementation implements 32 Dregs (this is currently architecturally impossible for M-profile) * the new T2 encodings have the implementation-defined option to read from memory (discarding the data) or write UNKNOWN values to memory for the stack slots that would be D16-D31 We choose not to make those accesses, so for us the two instructions behave identically assuming they don't UNDEF. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-21-peter.maydell@linaro.org --- target/arm/m-nocp.decode | 2 +- target/arm/translate-vfp.c.inc | 25 +++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/target/arm/m-nocp.decode b/target/arm/m-nocp.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m-nocp.decode +++ b/target/arm/m-nocp.decode @@ -XXX,XX +XXX,XX @@ { # Special cases which do not take an early NOCP: VLLDM and VLSTM - VLLDM_VLSTM 1110 1100 001 l:1 rn:4 0000 1010 0000 0000 + VLLDM_VLSTM 1110 1100 001 l:1 rn:4 0000 1010 op:1 000 0000 # VSCCLRM (new in v8.1M) is similar: VSCCLRM 1110 1100 1.01 1111 .... 1011 imm:7 0 vd=%vd_dp size=3 VSCCLRM 1110 1100 1.01 1111 .... 1010 imm:8 vd=%vd_sp size=2 diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -XXX,XX +XXX,XX @@ static bool trans_VLLDM_VLSTM(DisasContext *s, arg_VLLDM_VLSTM *a) !arm_dc_feature(s, ARM_FEATURE_V8)) { return false; } + + if (a->op) { + /* + * T2 encoding ({D0-D31} reglist): v8.1M and up. We choose not + * to take the IMPDEF option to make memory accesses to the stack + * slots that correspond to the D16-D31 registers (discarding + * read data and writing UNKNOWN values), so for us the T2 + * encoding behaves identically to the T1 encoding. + */ + if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { + return false; + } + } else { + /* + * T1 encoding ({D0-D15} reglist); undef if we have 32 Dregs. + * This is currently architecturally impossible, but we add the + * check to stay in line with the pseudocode. Note that we must + * emit code for the UNDEF so it takes precedence over the NOCP. + */ + if (dc_isar_feature(aa32_simd_r32, s)) { + unallocated_encoding(s); + return true; + } + } + /* * If not secure, UNDEF. We must emit code for this * rather than returning false so that this takes -- 2.20.1 v8.1M introduces a new TRD flag in the CCR register, which enables checking for stack frame integrity signatures on SG instructions. This bit is not banked, and is always RAZ/WI to Non-secure code. Adjust the code for handling CCR reads and writes to handle this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-23-peter.maydell@linaro.org --- target/arm/cpu.h | 2 ++ hw/intc/armv7m_nvic.c | 26 ++++++++++++++++++-------- 2 files changed, 20 insertions(+), 8 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ FIELD(V7M_CCR, STKOFHFNMIGN, 10, 1) FIELD(V7M_CCR, DC, 16, 1) FIELD(V7M_CCR, IC, 17, 1) FIELD(V7M_CCR, BP, 18, 1) +FIELD(V7M_CCR, LOB, 19, 1) +FIELD(V7M_CCR, TRD, 20, 1) /* V7M SCR bits */ FIELD(V7M_SCR, SLEEPONEXIT, 1, 1) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs) } return cpu->env.v7m.scr[attrs.secure]; case 0xd14: /* Configuration Control. */ - /* The BFHFNMIGN bit is the only non-banked bit; we - * keep it in the non-secure copy of the register. + /* + * Non-banked bits: BFHFNMIGN (stored in the NS copy of the register) + * and TRD (stored in the S copy of the register) */ val = cpu->env.v7m.ccr[attrs.secure]; val |= cpu->env.v7m.ccr[M_REG_NS] & R_V7M_CCR_BFHFNMIGN_MASK; @@ -XXX,XX +XXX,XX @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, cpu->env.v7m.scr[attrs.secure] = value; break; case 0xd14: /* Configuration Control. */ + { + uint32_t mask; + if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) { goto bad_offset; } /* Enforce RAZ/WI on reserved and must-RAZ/WI bits */ - value &= (R_V7M_CCR_STKALIGN_MASK | - R_V7M_CCR_BFHFNMIGN_MASK | - R_V7M_CCR_DIV_0_TRP_MASK | - R_V7M_CCR_UNALIGN_TRP_MASK | - R_V7M_CCR_USERSETMPEND_MASK | - R_V7M_CCR_NONBASETHRDENA_MASK); + mask = R_V7M_CCR_STKALIGN_MASK | + R_V7M_CCR_BFHFNMIGN_MASK | + R_V7M_CCR_DIV_0_TRP_MASK | + R_V7M_CCR_UNALIGN_TRP_MASK | + R_V7M_CCR_USERSETMPEND_MASK | + R_V7M_CCR_NONBASETHRDENA_MASK; + if (arm_feature(&cpu->env, ARM_FEATURE_V8_1M) && attrs.secure) { + /* TRD is always RAZ/WI from NS */ + mask |= R_V7M_CCR_TRD_MASK; + } + value &= mask; if (arm_feature(&cpu->env, ARM_FEATURE_V8)) { /* v8M makes NONBASETHRDENA and STKALIGN be RES1 */ @@ -XXX,XX +XXX,XX @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, cpu->env.v7m.ccr[attrs.secure] = value; break; + } case 0xd24: /* System Handler Control and State (SHCSR) */ if (!arm_feature(&cpu->env, ARM_FEATURE_V7)) { goto bad_offset; -- 2.20.1 v8.1M introduces a new TRD flag in the CCR register, which enables checking for stack frame integrity signatures on SG instructions. Add the code in the SG insn implementation for the new behaviour. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-24-peter.maydell@linaro.org --- target/arm/m_helper.c | 86 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m_helper.c +++ b/target/arm/m_helper.c @@ -XXX,XX +XXX,XX @@ static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx, return true; } +static bool v7m_read_sg_stack_word(ARMCPU *cpu, ARMMMUIdx mmu_idx, + uint32_t addr, uint32_t *spdata) +{ + /* + * Read a word of data from the stack for the SG instruction, + * writing the value into *spdata. If the load succeeds, return + * true; otherwise pend an appropriate exception and return false. + * (We can't use data load helpers here that throw an exception + * because of the context we're called in, which is halfway through + * arm_v7m_cpu_do_interrupt().) + */ + CPUState *cs = CPU(cpu); + CPUARMState *env = &cpu->env; + MemTxAttrs attrs = {}; + MemTxResult txres; + target_ulong page_size; + hwaddr physaddr; + int prot; + ARMMMUFaultInfo fi = {}; + ARMCacheAttrs cacheattrs = {}; + uint32_t value; + + if (get_phys_addr(env, addr, MMU_DATA_LOAD, mmu_idx, &physaddr, + &attrs, &prot, &page_size, &fi, &cacheattrs)) { + /* MPU/SAU lookup failed */ + if (fi.type == ARMFault_QEMU_SFault) { + qemu_log_mask(CPU_LOG_INT, + "...SecureFault during stack word read\n"); + env->v7m.sfsr |= R_V7M_SFSR_AUVIOL_MASK | R_V7M_SFSR_SFARVALID_MASK; + env->v7m.sfar = addr; + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SECURE, false); + } else { + qemu_log_mask(CPU_LOG_INT, + "...MemManageFault during stack word read\n"); + env->v7m.cfsr[M_REG_S] |= R_V7M_CFSR_DACCVIOL_MASK | + R_V7M_CFSR_MMARVALID_MASK; + env->v7m.mmfar[M_REG_S] = addr; + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM, false); + } + return false; + } + value = address_space_ldl(arm_addressspace(cs, attrs), physaddr, + attrs, &txres); + if (txres != MEMTX_OK) { + /* BusFault trying to read the data */ + qemu_log_mask(CPU_LOG_INT, + "...BusFault during stack word read\n"); + env->v7m.cfsr[M_REG_NS] |= + (R_V7M_CFSR_PRECISERR_MASK | R_V7M_CFSR_BFARVALID_MASK); + env->v7m.bfar = addr; + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_BUS, false); + return false; + } + + *spdata = value; + return true; +} + static bool v7m_handle_execute_nsc(ARMCPU *cpu) { /* @@ -XXX,XX +XXX,XX @@ static bool v7m_handle_execute_nsc(ARMCPU *cpu) */ qemu_log_mask(CPU_LOG_INT, "...really an SG instruction at 0x%08" PRIx32 ", executing it\n", env->regs[15]); + + if (cpu_isar_feature(aa32_m_sec_state, cpu) && + !arm_v7m_is_handler_mode(env)) { + /* + * v8.1M exception stack frame integrity check. Note that we + * must perform the memory access even if CCR_S.TRD is zero + * and we aren't going to check what the data loaded is. + */ + uint32_t spdata, sp; + + /* + * We know we are currently NS, so the S stack pointers must be + * in other_ss_{psp,msp}, not in regs[13]/other_sp. + */ + sp = v7m_using_psp(env) ? env->v7m.other_ss_psp : env->v7m.other_ss_msp; + if (!v7m_read_sg_stack_word(cpu, mmu_idx, sp, &spdata)) { + /* Stack access failed and an exception has been pended */ + return false; + } + + if (env->v7m.ccr[M_REG_S] & R_V7M_CCR_TRD_MASK) { + if (((spdata & ~1) == 0xfefa125a) || + !(env->v7m.control[M_REG_S] & 1)) { + goto gen_invep; + } + } + } + env->regs[14] &= ~1; env->v7m.control[M_REG_S] &= ~R_V7M_CONTROL_SFPA_MASK; switch_v7m_security_state(env, true); -- 2.20.1 In commit 077d7449100d824a4 we added code to handle the v8M requirement that returns from NMI or HardFault forcibly deactivate those exceptions regardless of what interrupt the guest is trying to deactivate. Unfortunately this broke the handling of the "illegal exception return because the returning exception number is not active" check for those cases. In the pseudocode this test is done on the exception the guest asks to return from, but because our implementation was doing this in armv7m_nvic_complete_irq() after the new "deactivate NMI/HardFault regardless" code we ended up doing the test on the VecInfo for that exception instead, which usually meant failing to raise the illegal exception return fault. In the case for "configurable exception targeting the opposite security state" we detected the illegal-return case but went ahead and deactivated the VecInfo anyway, which is wrong because that is the VecInfo for the other security state. Rearrange the code so that we first identify the illegal return cases, then see if we really need to deactivate NMI or HardFault instead, and finally do the deactivation. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-25-peter.maydell@linaro.org --- hw/intc/armv7m_nvic.c | 59 +++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 27 deletions(-) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ int armv7m_nvic_complete_irq(void *opaque, int irq, bool secure) { NVICState *s = (NVICState *)opaque; VecInfo *vec = NULL; - int ret; + int ret = 0; assert(irq > ARMV7M_EXCP_RESET && irq < s->num_irq); + trace_nvic_complete_irq(irq, secure); + + if (secure && exc_is_banked(irq)) { + vec = &s->sec_vectors[irq]; + } else { + vec = &s->vectors[irq]; + } + + /* + * Identify illegal exception return cases. We can't immediately + * return at this point because we still need to deactivate + * (either this exception or NMI/HardFault) first. + */ + if (!exc_is_banked(irq) && exc_targets_secure(s, irq) != secure) { + /* + * Return from a configurable exception targeting the opposite + * security state from the one we're trying to complete it for. + * Clear vec because it's not really the VecInfo for this + * (irq, secstate) so we mustn't deactivate it. + */ + ret = -1; + vec = NULL; + } else if (!vec->active) { + /* Return from an inactive interrupt */ + ret = -1; + } else { + /* Legal return, we will return the RETTOBASE bit value to the caller */ + ret = nvic_rettobase(s); + } + /* * For negative priorities, v8M will forcibly deactivate the appropriate * NMI or HardFault regardless of what interrupt we're being asked to @@ -XXX,XX +XXX,XX @@ int armv7m_nvic_complete_irq(void *opaque, int irq, bool secure) } if (!vec) { - if (secure && exc_is_banked(irq)) { - vec = &s->sec_vectors[irq]; - } else { - vec = &s->vectors[irq]; - } - } - - trace_nvic_complete_irq(irq, secure); - - if (!vec->active) { - /* Tell the caller this was an illegal exception return */ - return -1; - } - - /* - * If this is a configurable exception and it is currently - * targeting the opposite security state from the one we're trying - * to complete it for, this counts as an illegal exception return. - * We still need to deactivate whatever vector the logic above has - * selected, though, as it might not be the same as the one for the - * requested exception number. - */ - if (!exc_is_banked(irq) && exc_targets_secure(s, irq) != secure) { - ret = -1; - } else { - ret = nvic_rettobase(s); + return ret; } vec->active = 0; -- 2.20.1 For v8.1M the architecture mandates that CPUs must provide at least the "minimal RAS implementation" from the Reliability, Availability and Serviceability extension. This consists of: * an ESB instruction which is a NOP -- since it is in the HINT space we need only add a comment * an RFSR register which will RAZ/WI * a RAZ/WI AIRCR.IESB bit -- the code which handles writes to AIRCR does not allow setting of RES0 bits, so we already treat this as RAZ/WI; add a comment noting that this is deliberate * minimal implementation of the RAS register block at 0xe0005000 -- this will be in a subsequent commit * setting the ID_PFR0.RAS field to 0b0010 -- we will do this when we add the Cortex-M55 CPU model Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-26-peter.maydell@linaro.org --- target/arm/cpu.h | 14 ++++++++++++++ target/arm/t32.decode | 4 ++++ hw/intc/armv7m_nvic.c | 13 +++++++++++++ 3 files changed, 31 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ FIELD(ID_MMFR4, LSM, 20, 4) FIELD(ID_MMFR4, CCIDX, 24, 4) FIELD(ID_MMFR4, EVT, 28, 4) +FIELD(ID_PFR0, STATE0, 0, 4) +FIELD(ID_PFR0, STATE1, 4, 4) +FIELD(ID_PFR0, STATE2, 8, 4) +FIELD(ID_PFR0, STATE3, 12, 4) +FIELD(ID_PFR0, CSV2, 16, 4) +FIELD(ID_PFR0, AMU, 20, 4) +FIELD(ID_PFR0, DIT, 24, 4) +FIELD(ID_PFR0, RAS, 28, 4) + FIELD(ID_PFR1, PROGMOD, 0, 4) FIELD(ID_PFR1, SECURITY, 4, 4) FIELD(ID_PFR1, MPROGMOD, 8, 4) @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa32_predinv(const ARMISARegisters *id) return FIELD_EX32(id->id_isar6, ID_ISAR6, SPECRES) != 0; } +static inline bool isar_feature_aa32_ras(const ARMISARegisters *id) +{ + return FIELD_EX32(id->id_pfr0, ID_PFR0, RAS) != 0; +} + static inline bool isar_feature_aa32_mprofile(const ARMISARegisters *id) { return FIELD_EX32(id->id_pfr1, ID_PFR1, MPROGMOD) != 0; diff --git a/target/arm/t32.decode b/target/arm/t32.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/t32.decode +++ b/target/arm/t32.decode @@ -XXX,XX +XXX,XX @@ CLZ 1111 1010 1011 ---- 1111 .... 1000 .... @rdm # SEV 1111 0011 1010 1111 1000 0000 0000 0100 # SEVL 1111 0011 1010 1111 1000 0000 0000 0101 + # For M-profile minimal-RAS ESB can be a NOP, which is the + # default behaviour since it is in the hint space. + # ESB 1111 0011 1010 1111 1000 0000 0001 0000 + # The canonical nop ends in 0000 0000, but the whole rest # of the space is "reserved hint, behaves as nop". NOP 1111 0011 1010 1111 1000 0000 ---- ---- diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs) return 0; } return cpu->env.v7m.sfar; + case 0xf04: /* RFSR */ + if (!cpu_isar_feature(aa32_ras, cpu)) { + goto bad_offset; + } + /* We provide minimal-RAS only: RFSR is RAZ/WI */ + return 0; case 0xf34: /* FPCCR */ if (!cpu_isar_feature(aa32_vfp_simd, cpu)) { return 0; @@ -XXX,XX +XXX,XX @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, R_V7M_AIRCR_PRIGROUP_SHIFT, R_V7M_AIRCR_PRIGROUP_LENGTH); } + /* AIRCR.IESB is RAZ/WI because we implement only minimal RAS */ if (attrs.secure) { /* These bits are only writable by secure */ cpu->env.v7m.aircr = value & @@ -XXX,XX +XXX,XX @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, } break; } + case 0xf04: /* RFSR */ + if (!cpu_isar_feature(aa32_ras, cpu)) { + goto bad_offset; + } + /* We provide minimal-RAS only: RFSR is RAZ/WI */ + break; case 0xf34: /* FPCCR */ if (cpu_isar_feature(aa32_vfp_simd, cpu)) { /* Not all bits here are banked. */ -- 2.20.1 The RAS feature has a block of memory-mapped registers at offset 0x5000 within the PPB. For a "minimal RAS" implementation we provide no error records and so the only registers that exist in the block are ERRIIDR and ERRDEVID. The "RAZ/WI for privileged, BusFault for nonprivileged" behaviour of the "nvic-default" region is actually valid for minimal-RAS, so the main benefit of providing an explicit implementation of the register block is more accurate LOG_UNIMP messages, and a framework for where we could add a real RAS implementation later if necessary. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-27-peter.maydell@linaro.org --- include/hw/intc/armv7m_nvic.h | 1 + hw/intc/armv7m_nvic.c | 56 +++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/intc/armv7m_nvic.h +++ b/include/hw/intc/armv7m_nvic.h @@ -XXX,XX +XXX,XX @@ struct NVICState { MemoryRegion sysreg_ns_mem; MemoryRegion systickmem; MemoryRegion systick_ns_mem; + MemoryRegion ras_mem; MemoryRegion container; MemoryRegion defaultmem; diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index XXXXXXX..XXXXXXX 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -XXX,XX +XXX,XX @@ static const MemoryRegionOps nvic_systick_ops = { .endianness = DEVICE_NATIVE_ENDIAN, }; + +static MemTxResult ras_read(void *opaque, hwaddr addr, + uint64_t *data, unsigned size, + MemTxAttrs attrs) +{ + if (attrs.user) { + return MEMTX_ERROR; + } + + switch (addr) { + case 0xe10: /* ERRIIDR */ + /* architect field = Arm; product/variant/revision 0 */ + *data = 0x43b; + break; + case 0xfc8: /* ERRDEVID */ + /* Minimal RAS: we implement 0 error record indexes */ + *data = 0; + break; + default: + qemu_log_mask(LOG_UNIMP, "Read RAS register offset 0x%x\n", + (uint32_t)addr); + *data = 0; + break; + } + return MEMTX_OK; +} + +static MemTxResult ras_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size, + MemTxAttrs attrs) +{ + if (attrs.user) { + return MEMTX_ERROR; + } + + switch (addr) { + default: + qemu_log_mask(LOG_UNIMP, "Write to RAS register offset 0x%x\n", + (uint32_t)addr); + break; + } + return MEMTX_OK; +} + +static const MemoryRegionOps ras_ops = { + .read_with_attrs = ras_read, + .write_with_attrs = ras_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + /* * Unassigned portions of the PPB space are RAZ/WI for privileged * accesses, and fault for non-privileged accesses. @@ -XXX,XX +XXX,XX @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp) &s->systick_ns_mem, 1); } + if (cpu_isar_feature(aa32_ras, s->cpu)) { + memory_region_init_io(&s->ras_mem, OBJECT(s), + &ras_ops, s, "nvic_ras", 0x1000); + memory_region_add_subregion(&s->container, 0x5000, &s->ras_mem); + } + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->container); } -- 2.20.1 Correct a typo in the name we give the NVIC object. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201119215617.29887-28-peter.maydell@linaro.org --- hw/arm/armv7m.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/armv7m.c +++ b/hw/arm/armv7m.c @@ -XXX,XX +XXX,XX @@ static void armv7m_instance_init(Object *obj) memory_region_init(&s->container, obj, "armv7m-container", UINT64_MAX); - object_initialize_child(obj, "nvnic", &s->nvic, TYPE_NVIC); + object_initialize_child(obj, "nvic", &s->nvic, TYPE_NVIC); object_property_add_alias(obj, "num-irq", OBJECT(&s->nvic), "num-irq"); -- 2.20.1