Series comparison

Nothing much exciting here, but it's 37 patches worth...

thanks
-- PMM

The following changes since commit e64a62df378a746c0b257105959613c9f8122e59:

Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-040320-1' into staging (2020-03-05 12:13:51 +0000)

are available in the Git repository at:

https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20200305

for you to fetch changes up to 597d61a3b1f94c53a3aaa77671697c0c5f797dbf:

target/arm: Clean address for DC ZVA (2020-03-05 16:09:21 +0000)

----------------------------------------------------------------
 * versal: Implement ADMA
 * Implement (trivially) ARMv8.2-TTCNP
 * hw/arm/smmu-common: a fix to smmu_find_smmu_pcibus
 * Remove unnecessary endianness-handling on some boards
 * Avoid minor memory leaks from timer_new in some devices
 * Honour more of the HCR_EL2 trap bits
 * Complain rather than ignoring bad command line options for cubieboard
 * Honour TBI for DC ZVA and exception return

----------------------------------------------------------------
Edgar E. Iglesias (2):
      hw/arm: versal: Add support for the LPD ADMAs
      hw/arm: versal: Generate xlnx-versal-virt zdma FDT nodes

Eric Auger (1):
      hw/arm/smmu-common: a fix to smmu_find_smmu_pcibus

Niek Linnenbank (4):
      hw/arm/cubieboard: use ARM Cortex-A8 as the default CPU in machine definition
      hw/arm/cubieboard: restrict allowed CPU type to ARM Cortex-A8
      hw/arm/cubieboard: restrict allowed RAM size to 512MiB and 1GiB
      hw/arm/cubieboard: report error when using unsupported -bios argument

Pan Nengyuan (4):
      hw/arm/pxa2xx: move timer_new from init() into realize() to avoid memleaks
      hw/arm/spitz: move timer_new from init() into realize() to avoid memleaks
      hw/arm/strongarm: move timer_new from init() into realize() to avoid memleaks
      hw/timer/cadence_ttc: move timer_new from init() into realize() to avoid memleaks

Peter Maydell (1):
      target/arm: Implement (trivially) ARMv8.2-TTCNP

Philippe Mathieu-Daudé (6):
      hw/arm/smmu-common: Simplify smmu_find_smmu_pcibus() logic
      hw/arm/gumstix: Simplify since the machines are little-endian only
      hw/arm/mainstone: Simplify since the machines are little-endian only
      hw/arm/omap_sx1: Simplify since the machines are little-endian only
      hw/arm/z2: Simplify since the machines are little-endian only
      hw/arm/musicpal: Simplify since the machines are little-endian only

Richard Henderson (19):
      target/arm: Improve masking of HCR/HCR2 RES0 bits
      target/arm: Add HCR_EL2 bit definitions from ARMv8.6
      target/arm: Disable has_el2 and has_el3 for user-only
      target/arm: Remove EL2 and EL3 setup from user-only
      target/arm: Improve masking in arm_hcr_el2_eff
      target/arm: Honor the HCR_EL2.{TVM,TRVM} bits
      target/arm: Honor the HCR_EL2.TSW bit
      target/arm: Honor the HCR_EL2.TACR bit
      target/arm: Honor the HCR_EL2.TPCP bit
      target/arm: Honor the HCR_EL2.TPU bit
      target/arm: Honor the HCR_EL2.TTLB bit
      tests/tcg/aarch64: Add newline in pauth-1 printf
      target/arm: Replicate TBI/TBID bits for single range regimes
      target/arm: Optimize cpu_mmu_index
      target/arm: Introduce core_to_aa64_mmu_idx
      target/arm: Apply TBI to ESR_ELx in helper_exception_return
      target/arm: Move helper_dc_zva to helper-a64.c
      target/arm: Use DEF_HELPER_FLAGS for helper_dc_zva
      target/arm: Clean address for DC ZVA

From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Add support for the Versal LPD ADMAs.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/hw/arm/xlnx-versal.h |  6 ++++++
 hw/arm/xlnx-versal.c         | 24 ++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h
index XXXXXXX..XXXXXXX 100644
--- a/include/hw/arm/xlnx-versal.h
+++ b/include/hw/arm/xlnx-versal.h
@@ -XXX,XX +XXX,XX @@
 #define XLNX_VERSAL_NR_ACPUS   2
 #define XLNX_VERSAL_NR_UARTS   2
 #define XLNX_VERSAL_NR_GEMS    2
+#define XLNX_VERSAL_NR_ADMAS   8
 #define XLNX_VERSAL_NR_IRQS    192
 
 typedef struct Versal {
@@ -XXX,XX +XXX,XX @@ typedef struct Versal {
         struct {
             SysBusDevice *uart[XLNX_VERSAL_NR_UARTS];
             SysBusDevice *gem[XLNX_VERSAL_NR_GEMS];
+            SysBusDevice *adma[XLNX_VERSAL_NR_ADMAS];
         } iou;
     } lpd;
 
@@ -XXX,XX +XXX,XX @@ typedef struct Versal {
 #define VERSAL_GEM0_WAKE_IRQ_0     57
 #define VERSAL_GEM1_IRQ_0          58
 #define VERSAL_GEM1_WAKE_IRQ_0     59
+#define VERSAL_ADMA_IRQ_0          60
 
 /* Architecturally reserved IRQs suitable for virtualization.  */
 #define VERSAL_RSVD_IRQ_FIRST 111
@@ -XXX,XX +XXX,XX @@ typedef struct Versal {
 #define MM_GEM1                     0xff0d0000U
 #define MM_GEM1_SIZE                0x10000
 
+#define MM_ADMA_CH0                 0xffa80000U
+#define MM_ADMA_CH0_SIZE            0x10000
+
 #define MM_OCM                      0xfffc0000U
 #define MM_OCM_SIZE                 0x40000
 
diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -XXX,XX +XXX,XX @@ static void versal_create_gems(Versal *s, qemu_irq *pic)
     }
 }
 
+static void versal_create_admas(Versal *s, qemu_irq *pic)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(s->lpd.iou.adma); i++) {
+        char *name = g_strdup_printf("adma%d", i);
+        DeviceState *dev;
+        MemoryRegion *mr;
+
+        dev = qdev_create(NULL, "xlnx.zdma");
+        s->lpd.iou.adma[i] = SYS_BUS_DEVICE(dev);
+        object_property_add_child(OBJECT(s), name, OBJECT(dev), &error_fatal);
+        qdev_init_nofail(dev);
+
+        mr = sysbus_mmio_get_region(s->lpd.iou.adma[i], 0);
+        memory_region_add_subregion(&s->mr_ps,
+                                    MM_ADMA_CH0 + i * MM_ADMA_CH0_SIZE, mr);
+
+        sysbus_connect_irq(s->lpd.iou.adma[i], 0, pic[VERSAL_ADMA_IRQ_0 + i]);
+        g_free(name);
+    }
+}
+
 /* This takes the board allocated linear DDR memory and creates aliases
  * for each split DDR range/aperture on the Versal address map.
  */
@@ -XXX,XX +XXX,XX @@ static void versal_realize(DeviceState *dev, Error **errp)
     versal_create_apu_gic(s, pic);
     versal_create_uarts(s, pic);
     versal_create_gems(s, pic);
+    versal_create_admas(s, pic);
     versal_map_ddr(s);
     versal_unimp(s);
 
-- 
2.20.1

From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

Generate xlnx-versal-virt zdma FDT nodes.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Reviewed-by: KONRAD Frederic <frederic.konrad@adacore.com>
Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/xlnx-versal-virt.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -XXX,XX +XXX,XX @@ static void fdt_add_gem_nodes(VersalVirt *s)
     }
 }
 
+static void fdt_add_zdma_nodes(VersalVirt *s)
+{
+    const char clocknames[] = "clk_main\0clk_apb";
+    const char compat[] = "xlnx,zynqmp-dma-1.0";
+    int i;
+
+    for (i = XLNX_VERSAL_NR_ADMAS - 1; i >= 0; i--) {
+        uint64_t addr = MM_ADMA_CH0 + MM_ADMA_CH0_SIZE * i;
+        char *name = g_strdup_printf("/dma@%" PRIx64, addr);
+
+        qemu_fdt_add_subnode(s->fdt, name);
+
+        qemu_fdt_setprop_cell(s->fdt, name, "xlnx,bus-width", 64);
+        qemu_fdt_setprop_cells(s->fdt, name, "clocks",
+                               s->phandle.clk_25Mhz, s->phandle.clk_25Mhz);
+        qemu_fdt_setprop(s->fdt, name, "clock-names",
+                         clocknames, sizeof(clocknames));
+        qemu_fdt_setprop_cells(s->fdt, name, "interrupts",
+                               GIC_FDT_IRQ_TYPE_SPI, VERSAL_ADMA_IRQ_0 + i,
+                               GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+        qemu_fdt_setprop_sized_cells(s->fdt, name, "reg",
+                                     2, addr, 2, 0x1000);
+        qemu_fdt_setprop(s->fdt, name, "compatible", compat, sizeof(compat));
+        g_free(name);
+    }
+}
+
 static void fdt_nop_memory_nodes(void *fdt, Error **errp)
 {
     Error *err = NULL;
@@ -XXX,XX +XXX,XX @@ static void versal_virt_init(MachineState *machine)
     fdt_add_uart_nodes(s);
     fdt_add_gic_nodes(s);
     fdt_add_timer_nodes(s);
+    fdt_add_zdma_nodes(s);
     fdt_add_cpu_nodes(s, psci_conduit);
     fdt_add_clk_node(s, "/clk125", 125000000, s->phandle.clk_125Mhz);
     fdt_add_clk_node(s, "/clk25", 25000000, s->phandle.clk_25Mhz);
-- 
2.20.1

The ARMv8.2-TTCNP extension allows an implementation to optimize by
sharing TLB entries between multiple cores, provided that software
declares that it's ready to deal with this by setting a CnP bit in
the TTBRn_ELx.  It is mandatory from ARMv8.2 onward.

For QEMU's TLB implementation, sharing TLB entries between different
cores would not really benefit us and would be a lot of work to
implement.  So we implement this extension in the "trivial" manner:
we allow the guest to set and read back the CnP bit, but don't change
our behaviour (this is an architecturally valid implementation
choice).

The only code path which looks at the TTBRn_ELx values for the
long-descriptor format where the CnP bit is defined is already doing
enough masking to not get confused when the CnP bit at the bottom of
the register is set, so we can simply add a comment noting why we're
relying on that mask.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200225193822.18874-1-peter.maydell@linaro.org
---
 target/arm/cpu.c    | 1 +
 target/arm/cpu64.c  | 2 ++
 target/arm/helper.c | 4 ++++
 3 files changed, 7 insertions(+)

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_max_initfn(Object *obj)
             t = cpu->isar.id_mmfr4;
             t = FIELD_DP32(t, ID_MMFR4, HPDS, 1); /* AA32HPD */
             t = FIELD_DP32(t, ID_MMFR4, AC2, 1); /* ACTLR2, HACTLR2 */
+            t = FIELD_DP32(t, ID_MMFR4, CNP, 1); /* TTCNP */
             cpu->isar.id_mmfr4 = t;
         }
 #endif
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_max_initfn(Object *obj)
 
         t = cpu->isar.id_aa64mmfr2;
         t = FIELD_DP64(t, ID_AA64MMFR2, UAO, 1);
+        t = FIELD_DP64(t, ID_AA64MMFR2, CNP, 1); /* TTCNP */
         cpu->isar.id_aa64mmfr2 = t;
 
         /* Replicate the same data to the 32-bit id registers.  */
@@ -XXX,XX +XXX,XX @@ static void aarch64_max_initfn(Object *obj)
         u = cpu->isar.id_mmfr4;
         u = FIELD_DP32(u, ID_MMFR4, HPDS, 1); /* AA32HPD */
         u = FIELD_DP32(u, ID_MMFR4, AC2, 1); /* ACTLR2, HACTLR2 */
+        u = FIELD_DP32(t, ID_MMFR4, CNP, 1); /* TTCNP */
         cpu->isar.id_mmfr4 = u;
 
         u = cpu->isar.id_aa64dfr0;
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 bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
 
     /* Now we can extract the actual base address from the TTBR */
     descaddr = extract64(ttbr, 0, 48);
+    /*
+     * We rely on this masking to clear the RES0 bits at the bottom of the TTBR
+     * and also to mask out CnP (bit 0) which could validly be non-zero.
+     */
     descaddr &= ~indexmask;
 
     /* The address field in the descriptor goes up to bit 39 for ARMv7
-- 
2.20.1

From: Eric Auger <eric.auger@redhat.com>

Make sure a null SMMUPciBus is returned in case we were
not able to identify a pci bus matching the @bus_num.

This matches the fix done on intel iommu in commit:
a2e1cd41ccfe796529abfd1b6aeb1dd4393762a2

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <20200226172628.17449-1-eric.auger@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/smmu-common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/smmu-common.c
+++ b/hw/arm/smmu-common.c
@@ -XXX,XX +XXX,XX @@ SMMUPciBus *smmu_find_smmu_pcibus(SMMUState *s, uint8_t bus_num)
                 return smmu_pci_bus;
             }
         }
+        smmu_pci_bus = NULL;
     }
     return smmu_pci_bus;
 }
-- 
2.20.1

From: Philippe Mathieu-Daudé <philmd@redhat.com>

The smmu_find_smmu_pcibus() function was introduced (in commit
cac994ef43b) in a code format that could return an incorrect
pointer, which was then fixed by the previous commit.
We could have avoided this by writing the if() statement
differently. Do it now, in case this function is re-used.
The code is easier to review (harder to miss bugs).

Acked-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/smmu-common.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/smmu-common.c
+++ b/hw/arm/smmu-common.c
@@ -XXX,XX +XXX,XX @@ inline int smmu_ptw(SMMUTransCfg *cfg, dma_addr_t iova, IOMMUAccessFlags perm,
 SMMUPciBus *smmu_find_smmu_pcibus(SMMUState *s, uint8_t bus_num)
 {
     SMMUPciBus *smmu_pci_bus = s->smmu_pcibus_by_bus_num[bus_num];
+    GHashTableIter iter;
 
-    if (!smmu_pci_bus) {
-        GHashTableIter iter;
-
-        g_hash_table_iter_init(&iter, s->smmu_pcibus_by_busptr);
-        while (g_hash_table_iter_next(&iter, NULL, (void **)&smmu_pci_bus)) {
-            if (pci_bus_num(smmu_pci_bus->bus) == bus_num) {
-                s->smmu_pcibus_by_bus_num[bus_num] = smmu_pci_bus;
-                return smmu_pci_bus;
-            }
-        }
-        smmu_pci_bus = NULL;
+    if (smmu_pci_bus) {
+        return smmu_pci_bus;
     }
-    return smmu_pci_bus;
+
+    g_hash_table_iter_init(&iter, s->smmu_pcibus_by_busptr);
+    while (g_hash_table_iter_next(&iter, NULL, (void **)&smmu_pci_bus)) {
+        if (pci_bus_num(smmu_pci_bus->bus) == bus_num) {
+            s->smmu_pcibus_by_bus_num[bus_num] = smmu_pci_bus;
+            return smmu_pci_bus;
+        }
+    }
+
+    return NULL;
 }
 
 static AddressSpace *smmu_find_add_as(PCIBus *bus, void *opaque, int devfn)
-- 
2.20.1

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

As the Connex and Verdex machines only boot in little-endian,
we can simplify the code.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/gumstix.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/hw/arm/gumstix.c b/hw/arm/gumstix.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/gumstix.c
+++ b/hw/arm/gumstix.c
@@ -XXX,XX +XXX,XX @@ static void connex_init(MachineState *machine)
 {
     PXA2xxState *cpu;
     DriveInfo *dinfo;
-    int be;
     MemoryRegion *address_space_mem = get_system_memory();
 
     uint32_t connex_rom = 0x01000000;
@@ -XXX,XX +XXX,XX @@ static void connex_init(MachineState *machine)
         exit(1);
     }
 
-#ifdef TARGET_WORDS_BIGENDIAN
-    be = 1;
-#else
-    be = 0;
-#endif
     if (!pflash_cfi01_register(0x00000000, "connext.rom", connex_rom,
                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
-                               sector_len, 2, 0, 0, 0, 0, be)) {
+                               sector_len, 2, 0, 0, 0, 0, 0)) {
         error_report("Error registering flash memory");
         exit(1);
     }
@@ -XXX,XX +XXX,XX @@ static void verdex_init(MachineState *machine)
 {
     PXA2xxState *cpu;
     DriveInfo *dinfo;
-    int be;
     MemoryRegion *address_space_mem = get_system_memory();
 
     uint32_t verdex_rom = 0x02000000;
@@ -XXX,XX +XXX,XX @@ static void verdex_init(MachineState *machine)
         exit(1);
     }
 
-#ifdef TARGET_WORDS_BIGENDIAN
-    be = 1;
-#else
-    be = 0;
-#endif
     if (!pflash_cfi01_register(0x00000000, "verdex.rom", verdex_rom,
                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
-                               sector_len, 2, 0, 0, 0, 0, be)) {
+                               sector_len, 2, 0, 0, 0, 0, 0)) {
         error_report("Error registering flash memory");
         exit(1);
     }
-- 
2.20.1

From: Philippe Mathieu-Daudé <philmd@redhat.com>

We only build the little-endian softmmu configurations. Checking
for big endian is pointless, remove the unused code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/mainstone.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/hw/arm/mainstone.c b/hw/arm/mainstone.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/mainstone.c
+++ b/hw/arm/mainstone.c
@@ -XXX,XX +XXX,XX @@ static void mainstone_common_init(MemoryRegion *address_space_mem,
     DeviceState *mst_irq;
     DriveInfo *dinfo;
     int i;
-    int be;
     MemoryRegion *rom = g_new(MemoryRegion, 1);
 
     /* Setup CPU & memory */
@@ -XXX,XX +XXX,XX @@ static void mainstone_common_init(MemoryRegion *address_space_mem,
     memory_region_set_readonly(rom, true);
     memory_region_add_subregion(address_space_mem, 0, rom);
 
-#ifdef TARGET_WORDS_BIGENDIAN
-    be = 1;
-#else
-    be = 0;
-#endif
     /* There are two 32MiB flash devices on the board */
     for (i = 0; i < 2; i ++) {
         dinfo = drive_get(IF_PFLASH, 0, i);
@@ -XXX,XX +XXX,XX @@ static void mainstone_common_init(MemoryRegion *address_space_mem,
                                    i ? "mainstone.flash1" : "mainstone.flash0",
                                    MAINSTONE_FLASH,
                                    dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
-                                   sector_len, 4, 0, 0, 0, 0, be)) {
+                                   sector_len, 4, 0, 0, 0, 0, 0)) {
             error_report("Error registering flash memory");
             exit(1);
         }
-- 
2.20.1

From: Philippe Mathieu-Daudé <philmd@redhat.com>

We only build the little-endian softmmu configurations. Checking
for big endian is pointless, remove the unused code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/omap_sx1.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/hw/arm/omap_sx1.c b/hw/arm/omap_sx1.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/omap_sx1.c
+++ b/hw/arm/omap_sx1.c
@@ -XXX,XX +XXX,XX @@ static void sx1_init(MachineState *machine, const int version)
     DriveInfo *dinfo;
     int fl_idx;
     uint32_t flash_size = flash0_size;
-    int be;
 
     if (machine->ram_size != mc->default_ram_size) {
         char *sz = size_to_str(mc->default_ram_size);
@@ -XXX,XX +XXX,XX @@ static void sx1_init(MachineState *machine, const int version)
                                 OMAP_CS2_BASE, &cs[3]);
 
     fl_idx = 0;
-#ifdef TARGET_WORDS_BIGENDIAN
-    be = 1;
-#else
-    be = 0;
-#endif
-
     if ((dinfo = drive_get(IF_PFLASH, 0, fl_idx)) != NULL) {
         if (!pflash_cfi01_register(OMAP_CS0_BASE,
                                    "omap_sx1.flash0-1", flash_size,
                                    blk_by_legacy_dinfo(dinfo),
-                                   sector_size, 4, 0, 0, 0, 0, be)) {
+                                   sector_size, 4, 0, 0, 0, 0, 0)) {
             fprintf(stderr, "qemu: Error registering flash memory %d.\n",
                            fl_idx);
         }
@@ -XXX,XX +XXX,XX @@ static void sx1_init(MachineState *machine, const int version)
         if (!pflash_cfi01_register(OMAP_CS1_BASE,
                                    "omap_sx1.flash1-1", flash1_size,
                                    blk_by_legacy_dinfo(dinfo),
-                                   sector_size, 4, 0, 0, 0, 0, be)) {
+                                   sector_size, 4, 0, 0, 0, 0, 0)) {
             fprintf(stderr, "qemu: Error registering flash memory %d.\n",
                            fl_idx);
         }
-- 
2.20.1

From: Philippe Mathieu-Daudé <philmd@redhat.com>

We only build the little-endian softmmu configurations. Checking
for big endian is pointless, remove the unused code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/z2.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/hw/arm/z2.c b/hw/arm/z2.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/z2.c
+++ b/hw/arm/z2.c
@@ -XXX,XX +XXX,XX @@ static void z2_init(MachineState *machine)
     uint32_t sector_len = 0x10000;
     PXA2xxState *mpu;
     DriveInfo *dinfo;
-    int be;
     void *z2_lcd;
     I2CBus *bus;
     DeviceState *wm;
@@ -XXX,XX +XXX,XX @@ static void z2_init(MachineState *machine)
     /* Setup CPU & memory */
     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type);
 
-#ifdef TARGET_WORDS_BIGENDIAN
-    be = 1;
-#else
-    be = 0;
-#endif
     dinfo = drive_get(IF_PFLASH, 0, 0);
     if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE,
                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
-                               sector_len, 4, 0, 0, 0, 0, be)) {
+                               sector_len, 4, 0, 0, 0, 0, 0)) {
         error_report("Error registering flash memory");
         exit(1);
     }
-- 
2.20.1

From: Philippe Mathieu-Daudé <philmd@redhat.com>

We only build the little-endian softmmu configurations. Checking
for big endian is pointless, remove the unused code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/musicpal.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -XXX,XX +XXX,XX @@ static void musicpal_init(MachineState *machine)
          * 0xFF800000 (if there is 8 MB flash). So remap flash access if the
          * image is smaller than 32 MB.
          */
-#ifdef TARGET_WORDS_BIGENDIAN
-        pflash_cfi02_register(0x100000000ULL - MP_FLASH_SIZE_MAX,
-                              "musicpal.flash", flash_size,
-                              blk, 0x10000,
-                              MP_FLASH_SIZE_MAX / flash_size,
-                              2, 0x00BF, 0x236D, 0x0000, 0x0000,
-                              0x5555, 0x2AAA, 1);
-#else
         pflash_cfi02_register(0x100000000ULL - MP_FLASH_SIZE_MAX,
                               "musicpal.flash", flash_size,
                               blk, 0x10000,
                               MP_FLASH_SIZE_MAX / flash_size,
                               2, 0x00BF, 0x236D, 0x0000, 0x0000,
                               0x5555, 0x2AAA, 0);
-#endif
-
     }
     sysbus_create_simple(TYPE_MV88W8618_FLASHCFG, MP_FLASHCFG_BASE, NULL);
 
-- 
2.20.1

From: Pan Nengyuan <pannengyuan@huawei.com>

There are some memleaks when we call 'device_list_properties'. This patch move timer_new from init into realize to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-id: 20200227025055.14341-3-pannengyuan@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/pxa2xx.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -XXX,XX +XXX,XX @@ static void pxa2xx_rtc_init(Object *obj)
     s->last_rtcpicr = 0;
     s->last_hz = s->last_sw = s->last_pi = qemu_clock_get_ms(rtc_clock);
 
+    sysbus_init_irq(dev, &s->rtc_irq);
+
+    memory_region_init_io(&s->iomem, obj, &pxa2xx_rtc_ops, s,
+                          "pxa2xx-rtc", 0x10000);
+    sysbus_init_mmio(dev, &s->iomem);
+}
+
+static void pxa2xx_rtc_realize(DeviceState *dev, Error **errp)
+{
+    PXA2xxRTCState *s = PXA2XX_RTC(dev);
     s->rtc_hz    = timer_new_ms(rtc_clock, pxa2xx_rtc_hz_tick,    s);
     s->rtc_rdal1 = timer_new_ms(rtc_clock, pxa2xx_rtc_rdal1_tick, s);
     s->rtc_rdal2 = timer_new_ms(rtc_clock, pxa2xx_rtc_rdal2_tick, s);
     s->rtc_swal1 = timer_new_ms(rtc_clock, pxa2xx_rtc_swal1_tick, s);
     s->rtc_swal2 = timer_new_ms(rtc_clock, pxa2xx_rtc_swal2_tick, s);
     s->rtc_pi    = timer_new_ms(rtc_clock, pxa2xx_rtc_pi_tick,    s);
-
-    sysbus_init_irq(dev, &s->rtc_irq);
-
-    memory_region_init_io(&s->iomem, obj, &pxa2xx_rtc_ops, s,
-                          "pxa2xx-rtc", 0x10000);
-    sysbus_init_mmio(dev, &s->iomem);
 }
 
 static int pxa2xx_rtc_pre_save(void *opaque)
@@ -XXX,XX +XXX,XX @@ static void pxa2xx_rtc_sysbus_class_init(ObjectClass *klass, void *data)
 
     dc->desc = "PXA2xx RTC Controller";
     dc->vmsd = &vmstate_pxa2xx_rtc_regs;
+    dc->realize = pxa2xx_rtc_realize;
 }
 
 static const TypeInfo pxa2xx_rtc_sysbus_info = {
-- 
2.20.1

From: Pan Nengyuan <pannengyuan@huawei.com>

There are some memleaks when we call 'device_list_properties'. This patch move timer_new from init into realize to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-id: 20200227025055.14341-4-pannengyuan@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/spitz.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -XXX,XX +XXX,XX @@ static void spitz_keyboard_init(Object *obj)
 
     spitz_keyboard_pre_map(s);
 
-    s->kbdtimer = timer_new_ns(QEMU_CLOCK_VIRTUAL, spitz_keyboard_tick, s);
     qdev_init_gpio_in(dev, spitz_keyboard_strobe, SPITZ_KEY_STROBE_NUM);
     qdev_init_gpio_out(dev, s->sense, SPITZ_KEY_SENSE_NUM);
 }
 
+static void spitz_keyboard_realize(DeviceState *dev, Error **errp)
+{
+    SpitzKeyboardState *s = SPITZ_KEYBOARD(dev);
+    s->kbdtimer = timer_new_ns(QEMU_CLOCK_VIRTUAL, spitz_keyboard_tick, s);
+}
+
 /* LCD backlight controller */
 
 #define LCDTG_RESCTL	0x00
@@ -XXX,XX +XXX,XX @@ static void spitz_keyboard_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     dc->vmsd = &vmstate_spitz_kbd;
+    dc->realize = spitz_keyboard_realize;
 }
 
 static const TypeInfo spitz_keyboard_info = {
-- 
2.20.1

From: Pan Nengyuan <pannengyuan@huawei.com>

There are some memleaks when we call 'device_list_properties'. This patch move timer_new from init into realize to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-id: 20200227025055.14341-5-pannengyuan@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/strongarm.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/hw/arm/strongarm.c b/hw/arm/strongarm.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/strongarm.c
+++ b/hw/arm/strongarm.c
@@ -XXX,XX +XXX,XX @@ static void strongarm_rtc_init(Object *obj)
     s->last_rcnr = (uint32_t) mktimegm(&tm);
     s->last_hz = qemu_clock_get_ms(rtc_clock);
 
-    s->rtc_alarm = timer_new_ms(rtc_clock, strongarm_rtc_alarm_tick, s);
-    s->rtc_hz = timer_new_ms(rtc_clock, strongarm_rtc_hz_tick, s);
-
     sysbus_init_irq(dev, &s->rtc_irq);
     sysbus_init_irq(dev, &s->rtc_hz_irq);
 
@@ -XXX,XX +XXX,XX @@ static void strongarm_rtc_init(Object *obj)
     sysbus_init_mmio(dev, &s->iomem);
 }
 
+static void strongarm_rtc_realize(DeviceState *dev, Error **errp)
+{
+    StrongARMRTCState *s = STRONGARM_RTC(dev);
+    s->rtc_alarm = timer_new_ms(rtc_clock, strongarm_rtc_alarm_tick, s);
+    s->rtc_hz = timer_new_ms(rtc_clock, strongarm_rtc_hz_tick, s);
+}
+
 static int strongarm_rtc_pre_save(void *opaque)
 {
     StrongARMRTCState *s = opaque;
@@ -XXX,XX +XXX,XX @@ static void strongarm_rtc_sysbus_class_init(ObjectClass *klass, void *data)
 
     dc->desc = "StrongARM RTC Controller";
     dc->vmsd = &vmstate_strongarm_rtc_regs;
+    dc->realize = strongarm_rtc_realize;
 }
 
 static const TypeInfo strongarm_rtc_sysbus_info = {
@@ -XXX,XX +XXX,XX @@ static void strongarm_uart_init(Object *obj)
                           "uart", 0x10000);
     sysbus_init_mmio(dev, &s->iomem);
     sysbus_init_irq(dev, &s->irq);
-
-    s->rx_timeout_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, strongarm_uart_rx_to, s);
-    s->tx_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, strongarm_uart_tx, s);
 }
 
 static void strongarm_uart_realize(DeviceState *dev, Error **errp)
 {
     StrongARMUARTState *s = STRONGARM_UART(dev);
 
+    s->rx_timeout_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
+                                       strongarm_uart_rx_to,
+                                       s);
+    s->tx_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, strongarm_uart_tx, s);
     qemu_chr_fe_set_handlers(&s->chr,
                              strongarm_uart_can_receive,
                              strongarm_uart_receive,
-- 
2.20.1

From: Pan Nengyuan <pannengyuan@huawei.com>

There are some memleaks when we call 'device_list_properties'. This patch move timer_new from init into realize to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200227025055.14341-7-pannengyuan@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/timer/cadence_ttc.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/hw/timer/cadence_ttc.c b/hw/timer/cadence_ttc.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/timer/cadence_ttc.c
+++ b/hw/timer/cadence_ttc.c
@@ -XXX,XX +XXX,XX @@ static void cadence_timer_init(uint32_t freq, CadenceTimerState *s)
 static void cadence_ttc_init(Object *obj)
 {
     CadenceTTCState *s = CADENCE_TTC(obj);
-    int i;
-
-    for (i = 0; i < 3; ++i) {
-        cadence_timer_init(133000000, &s->timer[i]);
-        sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->timer[i].irq);
-    }
 
     memory_region_init_io(&s->iomem, obj, &cadence_ttc_ops, s,
                           "timer", 0x1000);
     sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem);
 }
 
+static void cadence_ttc_realize(DeviceState *dev, Error **errp)
+{
+    CadenceTTCState *s = CADENCE_TTC(dev);
+    int i;
+
+    for (i = 0; i < 3; ++i) {
+        cadence_timer_init(133000000, &s->timer[i]);
+        sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->timer[i].irq);
+    }
+}
+
 static int cadence_timer_pre_save(void *opaque)
 {
     cadence_timer_sync((CadenceTimerState *)opaque);
@@ -XXX,XX +XXX,XX @@ static void cadence_ttc_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     dc->vmsd = &vmstate_cadence_ttc;
+    dc->realize = cadence_ttc_realize;
 }
 
 static const TypeInfo cadence_ttc_info = {
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

Don't merely start with v8.0, handle v7VE as well.  Ensure that writes
from aarch32 mode do not change bits in the other half of the register.
Protect reads of aa64 id registers with ARM_FEATURE_AARCH64.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 38 +++++++++++++++++++++++++-------------
 1 file changed, 25 insertions(+), 13 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 const ARMCPRegInfo el3_no_el2_v8_cp_reginfo[] = {
     REGINFO_SENTINEL
 };
 
-static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
+static void do_hcr_write(CPUARMState *env, uint64_t value, uint64_t valid_mask)
 {
     ARMCPU *cpu = env_archcpu(env);
-    /* Begin with bits defined in base ARMv8.0.  */
-    uint64_t valid_mask = MAKE_64BIT_MASK(0, 34);
+
+    if (arm_feature(env, ARM_FEATURE_V8)) {
+        valid_mask |= MAKE_64BIT_MASK(0, 34);  /* ARMv8.0 */
+    } else {
+        valid_mask |= MAKE_64BIT_MASK(0, 28);  /* ARMv7VE */
+    }
 
     if (arm_feature(env, ARM_FEATURE_EL3)) {
         valid_mask &= ~HCR_HCD;
@@ -XXX,XX +XXX,XX @@ static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
          */
         valid_mask &= ~HCR_TSC;
     }
-    if (cpu_isar_feature(aa64_vh, cpu)) {
-        valid_mask |= HCR_E2H;
-    }
-    if (cpu_isar_feature(aa64_lor, cpu)) {
-        valid_mask |= HCR_TLOR;
-    }
-    if (cpu_isar_feature(aa64_pauth, cpu)) {
-        valid_mask |= HCR_API | HCR_APK;
+
+    if (arm_feature(env, ARM_FEATURE_AARCH64)) {
+        if (cpu_isar_feature(aa64_vh, cpu)) {
+            valid_mask |= HCR_E2H;
+        }
+        if (cpu_isar_feature(aa64_lor, cpu)) {
+            valid_mask |= HCR_TLOR;
+        }
+        if (cpu_isar_feature(aa64_pauth, cpu)) {
+            valid_mask |= HCR_API | HCR_APK;
+        }
     }
 
     /* Clear RES0 bits.  */
@@ -XXX,XX +XXX,XX @@ static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
     arm_cpu_update_vfiq(cpu);
 }
 
+static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
+{
+    do_hcr_write(env, value, 0);
+}
+
 static void hcr_writehigh(CPUARMState *env, const ARMCPRegInfo *ri,
                           uint64_t value)
 {
     /* Handle HCR2 write, i.e. write to high half of HCR_EL2 */
     value = deposit64(env->cp15.hcr_el2, 32, 32, value);
-    hcr_write(env, NULL, value);
+    do_hcr_write(env, value, MAKE_64BIT_MASK(0, 32));
 }
 
 static void hcr_writelow(CPUARMState *env, const ARMCPRegInfo *ri,
@@ -XXX,XX +XXX,XX @@ static void hcr_writelow(CPUARMState *env, const ARMCPRegInfo *ri,
 {
     /* Handle HCR write, i.e. write to low half of HCR_EL2 */
     value = deposit64(env->cp15.hcr_el2, 0, 32, value);
-    hcr_write(env, NULL, value);
+    do_hcr_write(env, value, MAKE_64BIT_MASK(32, 32));
 }
 
 /*
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.h | 7 +++++++
 1 file changed, 7 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 @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
 #define HCR_TERR      (1ULL << 36)
 #define HCR_TEA       (1ULL << 37)
 #define HCR_MIOCNCE   (1ULL << 38)
+/* RES0 bit 39 */
 #define HCR_APK       (1ULL << 40)
 #define HCR_API       (1ULL << 41)
 #define HCR_NV        (1ULL << 42)
@@ -XXX,XX +XXX,XX @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
 #define HCR_NV2       (1ULL << 45)
 #define HCR_FWB       (1ULL << 46)
 #define HCR_FIEN      (1ULL << 47)
+/* RES0 bit 48 */
 #define HCR_TID4      (1ULL << 49)
 #define HCR_TICAB     (1ULL << 50)
+#define HCR_AMVOFFEN  (1ULL << 51)
 #define HCR_TOCU      (1ULL << 52)
+#define HCR_ENSCXT    (1ULL << 53)
 #define HCR_TTLBIS    (1ULL << 54)
 #define HCR_TTLBOS    (1ULL << 55)
 #define HCR_ATA       (1ULL << 56)
 #define HCR_DCT       (1ULL << 57)
+#define HCR_TID5      (1ULL << 58)
+#define HCR_TWEDEN    (1ULL << 59)
+#define HCR_TWEDEL    MAKE_64BIT_MASK(60, 4)
 
 #define SCR_NS                (1U << 0)
 #define SCR_IRQ               (1U << 1)
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

In arm_cpu_reset, we configure many system registers so that user-only
behaves as it should with a minimum of ifdefs.  However, we do not set
all of the system registers as required for a cpu with EL2 and EL3.

Disabling EL2 and EL3 mean that we will not look at those registers,
which means that we don't have to worry about configuring them.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

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 Property arm_cpu_reset_hivecs_property =
 static Property arm_cpu_rvbar_property =
             DEFINE_PROP_UINT64("rvbar", ARMCPU, rvbar, 0);
 
+#ifndef CONFIG_USER_ONLY
 static Property arm_cpu_has_el2_property =
             DEFINE_PROP_BOOL("has_el2", ARMCPU, has_el2, true);
 
 static Property arm_cpu_has_el3_property =
             DEFINE_PROP_BOOL("has_el3", ARMCPU, has_el3, true);
+#endif
 
 static Property arm_cpu_cfgend_property =
             DEFINE_PROP_BOOL("cfgend", ARMCPU, cfgend, false);
@@ -XXX,XX +XXX,XX @@ void arm_cpu_post_init(Object *obj)
         qdev_property_add_static(DEVICE(obj), &arm_cpu_rvbar_property);
     }
 
+#ifndef CONFIG_USER_ONLY
     if (arm_feature(&cpu->env, ARM_FEATURE_EL3)) {
         /* Add the has_el3 state CPU property only if EL3 is allowed.  This will
          * prevent "has_el3" from existing on CPUs which cannot support EL3.
          */
         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el3_property);
 
-#ifndef CONFIG_USER_ONLY
         object_property_add_link(obj, "secure-memory",
                                  TYPE_MEMORY_REGION,
                                  (Object **)&cpu->secure_memory,
                                  qdev_prop_allow_set_link_before_realize,
                                  OBJ_PROP_LINK_STRONG,
                                  &error_abort);
-#endif
     }
 
     if (arm_feature(&cpu->env, ARM_FEATURE_EL2)) {
         qdev_property_add_static(DEVICE(obj), &arm_cpu_has_el2_property);
     }
+#endif
 
     if (arm_feature(&cpu->env, ARM_FEATURE_PMU)) {
         cpu->has_pmu = true;
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

We have disabled EL2 and EL3 for user-only, which means that these
registers "don't exist" and should not be set.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-5-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.c | 6 ------
 1 file changed, 6 deletions(-)

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(CPUState *s)
         /* Enable all PAC keys.  */
         env->cp15.sctlr_el[1] |= (SCTLR_EnIA | SCTLR_EnIB |
                                   SCTLR_EnDA | SCTLR_EnDB);
-        /* Enable all PAC instructions */
-        env->cp15.hcr_el2 |= HCR_API;
-        env->cp15.scr_el3 |= SCR_API;
         /* and to the FP/Neon instructions */
         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3);
         /* and to the SVE instructions */
         env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 16, 2, 3);
-        env->cp15.cptr_el[3] |= CPTR_EZ;
         /* with maximum vector length */
         env->vfp.zcr_el[1] = cpu_isar_feature(aa64_sve, cpu) ?
                              cpu->sve_max_vq - 1 : 0;
-        env->vfp.zcr_el[2] = env->vfp.zcr_el[1];
-        env->vfp.zcr_el[3] = env->vfp.zcr_el[1];
         /*
          * Enable TBI0 and TBI1.  While the real kernel only enables TBI0,
          * turning on both here will produce smaller code and otherwise
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

Update the {TGE,E2H} == '11' masking to ARMv8.6.
If EL2 is configured for aarch32, disable all of
the bits that are RES0 in aarch32 mode.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 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 @@ uint64_t arm_hcr_el2_eff(CPUARMState *env)
          * Since the v8.4 language applies to the entire register, and
          * appears to be backward compatible, use that.
          */
-        ret = 0;
-    } else if (ret & HCR_TGE) {
-        /* These bits are up-to-date as of ARMv8.4.  */
+        return 0;
+    }
+
+    /*
+     * For a cpu that supports both aarch64 and aarch32, we can set bits
+     * in HCR_EL2 (e.g. via EL3) that are RES0 when we enter EL2 as aa32.
+     * Ignore all of the bits in HCR+HCR2 that are not valid for aarch32.
+     */
+    if (!arm_el_is_aa64(env, 2)) {
+        uint64_t aa32_valid;
+
+        /*
+         * These bits are up-to-date as of ARMv8.6.
+         * For HCR, it's easiest to list just the 2 bits that are invalid.
+         * For HCR2, list those that are valid.
+         */
+        aa32_valid = MAKE_64BIT_MASK(0, 32) & ~(HCR_RW | HCR_TDZ);
+        aa32_valid |= (HCR_CD | HCR_ID | HCR_TERR | HCR_TEA | HCR_MIOCNCE |
+                       HCR_TID4 | HCR_TICAB | HCR_TOCU | HCR_TTLBIS);
+        ret &= aa32_valid;
+    }
+
+    if (ret & HCR_TGE) {
+        /* These bits are up-to-date as of ARMv8.6.  */
         if (ret & HCR_E2H) {
             ret &= ~(HCR_VM | HCR_FMO | HCR_IMO | HCR_AMO |
                      HCR_BSU_MASK | HCR_DC | HCR_TWI | HCR_TWE |
                      HCR_TID0 | HCR_TID2 | HCR_TPCP | HCR_TPU |
-                     HCR_TDZ | HCR_CD | HCR_ID | HCR_MIOCNCE);
+                     HCR_TDZ | HCR_CD | HCR_ID | HCR_MIOCNCE |
+                     HCR_TID4 | HCR_TICAB | HCR_TOCU | HCR_ENSCXT |
+                     HCR_TTLBIS | HCR_TTLBOS | HCR_TID5);
         } else {
             ret |= HCR_FMO | HCR_IMO | HCR_AMO;
         }
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

These bits trap EL1 access to various virtual memory controls.

Buglink: https://bugs.launchpad.net/bugs/1855072
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 82 ++++++++++++++++++++++++++++++---------------
 1 file changed, 55 insertions(+), 27 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 CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri,
     return CP_ACCESS_OK;
 }
 
+/* Check for traps from EL1 due to HCR_EL2.TVM and HCR_EL2.TRVM.  */
+static CPAccessResult access_tvm_trvm(CPUARMState *env, const ARMCPRegInfo *ri,
+                                      bool isread)
+{
+    if (arm_current_el(env) == 1) {
+        uint64_t trap = isread ? HCR_TRVM : HCR_TVM;
+        if (arm_hcr_el2_eff(env) & trap) {
+            return CP_ACCESS_TRAP_EL2;
+        }
+    }
+    return CP_ACCESS_OK;
+}
+
 static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
 {
     ARMCPU *cpu = env_archcpu(env);
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo cp_reginfo[] = {
      */
     { .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
-      .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .secure = ARM_CP_SECSTATE_NS,
       .fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]),
       .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
     { .name = "CONTEXTIDR_S", .state = ARM_CP_STATE_AA32,
       .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
-      .access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .secure = ARM_CP_SECSTATE_S,
       .fieldoffset = offsetof(CPUARMState, cp15.contextidr_s),
       .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
     REGINFO_SENTINEL
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo not_v8_cp_reginfo[] = {
     /* MMU Domain access control / MPU write buffer control */
     { .name = "DACR",
       .cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY,
-      .access = PL1_RW, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm, .resetvalue = 0,
       .writefn = dacr_write, .raw_writefn = raw_write,
       .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
                              offsetoflow32(CPUARMState, cp15.dacr_ns) } },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v6_cp_reginfo[] = {
     { .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5,
       .access = PL0_W, .type = ARM_CP_NOP },
     { .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2,
-      .access = PL1_RW,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s),
                              offsetof(CPUARMState, cp15.ifar_ns) },
       .resetvalue = 0, },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
      */
     { .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0,
-      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_CONST, .resetvalue = 0 },
     { .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1,
-      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_CONST, .resetvalue = 0 },
     /* MAIR can just read-as-written because we don't implement caches
      * and so don't need to care about memory attributes.
      */
     { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
-      .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
       .resetvalue = 0 },
     { .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0,
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
       * handled in the field definitions.
       */
     { .name = "MAIR0", .state = ARM_CP_STATE_AA32,
-      .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW,
+      .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s),
                              offsetof(CPUARMState, cp15.mair0_ns) },
       .resetfn = arm_cp_reset_ignore },
     { .name = "MAIR1", .state = ARM_CP_STATE_AA32,
-      .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW,
+      .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s),
                              offsetof(CPUARMState, cp15.mair1_ns) },
       .resetfn = arm_cp_reset_ignore },
@@ -XXX,XX +XXX,XX @@ static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
 
 static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = {
     { .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
-      .access = PL1_RW, .type = ARM_CP_ALIAS,
+      .access = PL1_RW, .accessfn = access_tvm_trvm, .type = ARM_CP_ALIAS,
       .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dfsr_s),
                              offsetoflow32(CPUARMState, cp15.dfsr_ns) }, },
     { .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
-      .access = PL1_RW, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm, .resetvalue = 0,
       .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.ifsr_s),
                              offsetoflow32(CPUARMState, cp15.ifsr_ns) } },
     { .name = "DFAR", .cp = 15, .opc1 = 0, .crn = 6, .crm = 0, .opc2 = 0,
-      .access = PL1_RW, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm, .resetvalue = 0,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.dfar_s),
                              offsetof(CPUARMState, cp15.dfar_ns) } },
     { .name = "FAR_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0,
-      .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]),
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]),
       .resetvalue = 0, },
     REGINFO_SENTINEL
 };
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = {
 static const ARMCPRegInfo vmsa_cp_reginfo[] = {
     { .name = "ESR_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .crn = 5, .crm = 2, .opc1 = 0, .opc2 = 0,
-      .access = PL1_RW,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
       .fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, },
     { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
-      .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .writefn = vmsa_ttbr_write, .resetvalue = 0,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
                              offsetof(CPUARMState, cp15.ttbr0_ns) } },
     { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
-      .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .writefn = vmsa_ttbr_write, .resetvalue = 0,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
                              offsetof(CPUARMState, cp15.ttbr1_ns) } },
     { .name = "TCR_EL1", .state = ARM_CP_STATE_AA64,
       .opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
-      .access = PL1_RW, .writefn = vmsa_tcr_el12_write,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .writefn = vmsa_tcr_el12_write,
       .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write,
       .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[1]) },
     { .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
-      .access = PL1_RW, .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write,
       .raw_writefn = vmsa_ttbcr_raw_write,
       .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tcr_el[3]),
                              offsetoflow32(CPUARMState, cp15.tcr_el[1])} },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo vmsa_cp_reginfo[] = {
  */
 static const ARMCPRegInfo ttbcr2_reginfo = {
     .name = "TTBCR2", .cp = 15, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 3,
-    .access = PL1_RW, .type = ARM_CP_ALIAS,
+    .access = PL1_RW, .accessfn = access_tvm_trvm,
+    .type = ARM_CP_ALIAS,
     .bank_fieldoffsets = { offsetofhigh32(CPUARMState, cp15.tcr_el[3]),
                            offsetofhigh32(CPUARMState, cp15.tcr_el[1]) },
 };
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo lpae_cp_reginfo[] = {
     /* NOP AMAIR0/1 */
     { .name = "AMAIR0", .state = ARM_CP_STATE_BOTH,
       .opc0 = 3, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 0,
-      .access = PL1_RW, .type = ARM_CP_CONST,
-      .resetvalue = 0 },
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_CONST, .resetvalue = 0 },
     /* AMAIR1 is mapped to AMAIR_EL1[63:32] */
     { .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1,
-      .access = PL1_RW, .type = ARM_CP_CONST,
-      .resetvalue = 0 },
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_CONST, .resetvalue = 0 },
     { .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0,
       .access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s),
                              offsetof(CPUARMState, cp15.par_ns)} },
     { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
-      .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_64BIT | ARM_CP_ALIAS,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
                              offsetof(CPUARMState, cp15.ttbr0_ns) },
       .writefn = vmsa_ttbr_write, },
     { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1,
-      .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
+      .access = PL1_RW, .accessfn = access_tvm_trvm,
+      .type = ARM_CP_64BIT | ARM_CP_ALIAS,
       .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
                              offsetof(CPUARMState, cp15.ttbr1_ns) },
       .writefn = vmsa_ttbr_write, },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
       .type = ARM_CP_NOP, .access = PL1_W },
     /* MMU Domain access control / MPU write buffer control */
     { .name = "DACR", .cp = 15, .opc1 = 0, .crn = 3, .crm = 0, .opc2 = 0,
-      .access = PL1_RW, .resetvalue = 0,
+      .access = PL1_RW, .accessfn = access_tvm_trvm, .resetvalue = 0,
       .writefn = dacr_write, .raw_writefn = raw_write,
       .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
                              offsetoflow32(CPUARMState, cp15.dacr_ns) } },
@@ -XXX,XX +XXX,XX @@ void register_cp_regs_for_features(ARMCPU *cpu)
         ARMCPRegInfo sctlr = {
             .name = "SCTLR", .state = ARM_CP_STATE_BOTH,
             .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0,
-            .access = PL1_RW,
+            .access = PL1_RW, .accessfn = access_tvm_trvm,
             .bank_fieldoffsets = { offsetof(CPUARMState, cp15.sctlr_s),
                                    offsetof(CPUARMState, cp15.sctlr_ns) },
             .writefn = sctlr_write, .resetvalue = cpu->reset_sctlr,
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

These bits trap EL1 access to set/way cache maintenance insns.

Buglink: https://bugs.launchpad.net/bugs/1863685
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

From: Richard Henderson <richard.henderson@linaro.org>

This bit traps EL1 access to the auxiliary control registers.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

From: Richard Henderson <richard.henderson@linaro.org>

This bit traps EL1 access to cache maintenance insns that operate
to the point of coherency or persistence.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 39 +++++++++++++++++++++++++++++++--------
 1 file changed, 31 insertions(+), 8 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 CPAccessResult aa64_cacheop_access(CPUARMState *env,
     return CP_ACCESS_OK;
 }
 
+static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env,
+                                              const ARMCPRegInfo *ri,
+                                              bool isread)
+{
+    /* Cache invalidate/clean to Point of Coherency or Persistence...  */
+    switch (arm_current_el(env)) {
+    case 0:
+        /* ... EL0 must UNDEF unless SCTLR_EL1.UCI is set.  */
+        if (!(arm_sctlr(env, 0) & SCTLR_UCI)) {
+            return CP_ACCESS_TRAP;
+        }
+        /* fall through */
+    case 1:
+        /* ... EL1 must trap to EL2 if HCR_EL2.TPCP is set.  */
+        if (arm_hcr_el2_eff(env) & HCR_TPCP) {
+            return CP_ACCESS_TRAP_EL2;
+        }
+        break;
+    }
+    return CP_ACCESS_OK;
+}
+
 /* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions
  * Page D4-1736 (DDI0487A.b)
  */
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
       .accessfn = aa64_cacheop_access },
     { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
-      .access = PL1_W, .type = ARM_CP_NOP },
+      .access = PL1_W, .accessfn = aa64_cacheop_poc_access,
+      .type = ARM_CP_NOP },
     { .name = "DC_ISW", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
       .access = PL1_W, .accessfn = access_tsw, .type = ARM_CP_NOP },
     { .name = "DC_CVAC", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 10, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NOP,
-      .accessfn = aa64_cacheop_access },
+      .accessfn = aa64_cacheop_poc_access },
     { .name = "DC_CSW", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
       .access = PL1_W, .accessfn = access_tsw, .type = ARM_CP_NOP },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NOP,
-      .accessfn = aa64_cacheop_access },
+      .accessfn = aa64_cacheop_poc_access },
     { .name = "DC_CISW", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
       .access = PL1_W, .accessfn = access_tsw, .type = ARM_CP_NOP },
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7,
       .type = ARM_CP_NOP, .access = PL1_W },
     { .name = "DCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_poc_access },
     { .name = "DCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
       .type = ARM_CP_NOP, .access = PL1_W, .accessfn = access_tsw },
     { .name = "DCCMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 1,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_poc_access },
     { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
       .type = ARM_CP_NOP, .access = PL1_W, .accessfn = access_tsw },
     { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1,
       .type = ARM_CP_NOP, .access = PL1_W },
     { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_poc_access },
     { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
       .type = ARM_CP_NOP, .access = PL1_W, .accessfn = access_tsw },
     /* MMU Domain access control / MPU write buffer control */
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo dcpop_reg[] = {
     { .name = "DC_CVAP", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 12, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END,
-      .accessfn = aa64_cacheop_access, .writefn = dccvap_writefn },
+      .accessfn = aa64_cacheop_poc_access, .writefn = dccvap_writefn },
     REGINFO_SENTINEL
 };
 
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo dcpodp_reg[] = {
     { .name = "DC_CVADP", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 13, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END,
-      .accessfn = aa64_cacheop_access, .writefn = dccvap_writefn },
+      .accessfn = aa64_cacheop_poc_access, .writefn = dccvap_writefn },
     REGINFO_SENTINEL
 };
 #endif /*CONFIG_USER_ONLY*/
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

This bit traps EL1 access to cache maintenance insns that operate
to the point of unification.  There are no longer any references to
plain aa64_cacheop_access, so remove it.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 53 +++++++++++++++++++++++++++------------------
 1 file changed, 32 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 @@ static const ARMCPRegInfo uao_reginfo = {
     .readfn = aa64_uao_read, .writefn = aa64_uao_write
 };
 
-static CPAccessResult aa64_cacheop_access(CPUARMState *env,
-                                          const ARMCPRegInfo *ri,
-                                          bool isread)
-{
-    /* Cache invalidate/clean: NOP, but EL0 must UNDEF unless
-     * SCTLR_EL1.UCI is set.
-     */
-    if (arm_current_el(env) == 0 && !(arm_sctlr(env, 0) & SCTLR_UCI)) {
-        return CP_ACCESS_TRAP;
-    }
-    return CP_ACCESS_OK;
-}
-
 static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env,
                                               const ARMCPRegInfo *ri,
                                               bool isread)
@@ -XXX,XX +XXX,XX @@ static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env,
     return CP_ACCESS_OK;
 }
 
+static CPAccessResult aa64_cacheop_pou_access(CPUARMState *env,
+                                              const ARMCPRegInfo *ri,
+                                              bool isread)
+{
+    /* Cache invalidate/clean to Point of Unification... */
+    switch (arm_current_el(env)) {
+    case 0:
+        /* ... EL0 must UNDEF unless SCTLR_EL1.UCI is set.  */
+        if (!(arm_sctlr(env, 0) & SCTLR_UCI)) {
+            return CP_ACCESS_TRAP;
+        }
+        /* fall through */
+    case 1:
+        /* ... EL1 must trap to EL2 if HCR_EL2.TPU is set.  */
+        if (arm_hcr_el2_eff(env) & HCR_TPU) {
+            return CP_ACCESS_TRAP_EL2;
+        }
+        break;
+    }
+    return CP_ACCESS_OK;
+}
+
 /* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions
  * Page D4-1736 (DDI0487A.b)
  */
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     /* Cache ops: all NOPs since we don't emulate caches */
     { .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
-      .access = PL1_W, .type = ARM_CP_NOP },
+      .access = PL1_W, .type = ARM_CP_NOP,
+      .accessfn = aa64_cacheop_pou_access },
     { .name = "IC_IALLU", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
-      .access = PL1_W, .type = ARM_CP_NOP },
+      .access = PL1_W, .type = ARM_CP_NOP,
+      .accessfn = aa64_cacheop_pou_access },
     { .name = "IC_IVAU", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NOP,
-      .accessfn = aa64_cacheop_access },
+      .accessfn = aa64_cacheop_pou_access },
     { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
       .access = PL1_W, .accessfn = aa64_cacheop_poc_access,
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     { .name = "DC_CVAU", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NOP,
-      .accessfn = aa64_cacheop_access },
+      .accessfn = aa64_cacheop_pou_access },
     { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1,
       .access = PL0_W, .type = ARM_CP_NOP,
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
       .writefn = tlbiipas2_is_write },
     /* 32 bit cache operations */
     { .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
     { .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6,
       .type = ARM_CP_NOP, .access = PL1_W },
     { .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
     { .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
     { .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6,
       .type = ARM_CP_NOP, .access = PL1_W },
     { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7,
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
       .type = ARM_CP_NOP, .access = PL1_W, .accessfn = access_tsw },
     { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1,
-      .type = ARM_CP_NOP, .access = PL1_W },
+      .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
     { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1,
       .type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_poc_access },
     { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

This bit traps EL1 access to tlb maintenance insns.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 85 +++++++++++++++++++++++++++++----------------
 1 file changed, 55 insertions(+), 30 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 CPAccessResult access_tacr(CPUARMState *env, const ARMCPRegInfo *ri,
     return CP_ACCESS_OK;
 }
 
+/* Check for traps from EL1 due to HCR_EL2.TTLB. */
+static CPAccessResult access_ttlb(CPUARMState *env, const ARMCPRegInfo *ri,
+                                  bool isread)
+{
+    if (arm_current_el(env) == 1 && (arm_hcr_el2_eff(env) & HCR_TTLB)) {
+        return CP_ACCESS_TRAP_EL2;
+    }
+    return CP_ACCESS_OK;
+}
+
 static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
 {
     ARMCPU *cpu = env_archcpu(env);
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
       .type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read },
     /* 32 bit ITLB invalidates */
     { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiall_write },
     { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_write },
     { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiasid_write },
     /* 32 bit DTLB invalidates */
     { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiall_write },
     { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_write },
     { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiasid_write },
     /* 32 bit TLB invalidates */
     { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiall_write },
     { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_write },
     { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiasid_write },
     { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimvaa_write },
     REGINFO_SENTINEL
 };
 
 static const ARMCPRegInfo v7mp_cp_reginfo[] = {
     /* 32 bit TLB invalidates, Inner Shareable */
     { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbiall_is_write },
     { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_is_write },
     { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
-      .type = ARM_CP_NO_RAW, .access = PL1_W,
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
       .writefn = tlbiasid_is_write },
     { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
-      .type = ARM_CP_NO_RAW, .access = PL1_W,
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
       .writefn = tlbimvaa_is_write },
     REGINFO_SENTINEL
 };
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
     /* TLBI operations */
     { .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vmalle1is_write },
     { .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1is_write },
     { .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vmalle1is_write },
     { .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1is_write },
     { .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1is_write },
     { .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1is_write },
     { .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vmalle1_write },
     { .name = "TLBI_VAE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1_write },
     { .name = "TLBI_ASIDE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vmalle1_write },
     { .name = "TLBI_VAAE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1_write },
     { .name = "TLBI_VALE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1_write },
     { .name = "TLBI_VAALE1", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
-      .access = PL1_W, .type = ARM_CP_NO_RAW,
+      .access = PL1_W, .accessfn = access_ttlb, .type = ARM_CP_NO_RAW,
       .writefn = tlbi_aa64_vae1_write },
     { .name = "TLBI_IPAS2E1IS", .state = ARM_CP_STATE_AA64,
       .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1,
@@ -XXX,XX +XXX,XX @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
 #endif
     /* TLB invalidate last level of translation table walk */
     { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_is_write },
     { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
-      .type = ARM_CP_NO_RAW, .access = PL1_W,
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
       .writefn = tlbimvaa_is_write },
     { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimva_write },
     { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
-      .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
+      .type = ARM_CP_NO_RAW, .access = PL1_W, .accessfn = access_ttlb,
+      .writefn = tlbimvaa_write },
     { .name = "TLBIMVALH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5,
       .type = ARM_CP_NO_RAW, .access = PL2_W,
       .writefn = tlbimva_hyp_write },
-- 
2.20.1

From: Niek Linnenbank <nieklinnenbank@gmail.com>

The Cubieboard is a singleboard computer with an Allwinner A10 System-on-Chip [1].
As documented in the Allwinner A10 User Manual V1.5 [2], the SoC has an ARM
Cortex-A8 processor. Currently the Cubieboard machine definition specifies the
ARM Cortex-A9 in its description and as the default CPU.

This patch corrects the Cubieboard machine definition to use the ARM Cortex-A8.

The only user-visible effect is that our textual description of the
machine was wrong, because hw/arm/allwinner-a10.c always creates a
Cortex-A8 CPU regardless of the default value in the MachineClass struct.

[1] http://docs.cubieboard.org/products/start#cubieboard1
 [2] https://linux-sunxi.org/File:Allwinner_A10_User_manual_V1.5.pdf

Fixes: 8a863c8120994981a099
Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200227220149.6845-2-nieklinnenbank@gmail.com
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[note in commit message that the bug didn't have much visible effect]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/cubieboard.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -XXX,XX +XXX,XX @@ static void cubieboard_init(MachineState *machine)
 
 static void cubieboard_machine_init(MachineClass *mc)
 {
-    mc->desc = "cubietech cubieboard (Cortex-A9)";
-    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
+    mc->desc = "cubietech cubieboard (Cortex-A8)";
+    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
     mc->init = cubieboard_init;
     mc->block_default_type = IF_IDE;
     mc->units_per_default_bus = 1;
-- 
2.20.1

From: Niek Linnenbank <nieklinnenbank@gmail.com>

The Cubieboard has an ARM Cortex-A8.  Instead of simply ignoring a
bogus -cpu option provided by the user, give them an error message so
they know their command line is wrong.

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200227220149.6845-3-nieklinnenbank@gmail.com
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweaked commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/cubieboard.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -XXX,XX +XXX,XX @@ static struct arm_boot_info cubieboard_binfo = {
 
 static void cubieboard_init(MachineState *machine)
 {
-    AwA10State *a10 = AW_A10(object_new(TYPE_AW_A10));
+    AwA10State *a10;
     Error *err = NULL;
 
+    /* Only allow Cortex-A8 for this board */
+    if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) {
+        error_report("This board can only be used with cortex-a8 CPU");
+        exit(1);
+    }
+
+    a10 = AW_A10(object_new(TYPE_AW_A10));
+
     object_property_set_int(OBJECT(&a10->emac), 1, "phy-addr", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't set phy address: ");
-- 
2.20.1

From: Niek Linnenbank <nieklinnenbank@gmail.com>

The Cubieboard contains either 512MiB or 1GiB of onboard RAM [1].
Prevent changing RAM to a different size which could break user programs.

[1] http://linux-sunxi.org/Cubieboard

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200227220149.6845-4-nieklinnenbank@gmail.com
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/cubieboard.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -XXX,XX +XXX,XX @@ static void cubieboard_init(MachineState *machine)
     AwA10State *a10;
     Error *err = NULL;
 
+    /* This board has fixed size RAM (512MiB or 1GiB) */
+    if (machine->ram_size != 512 * MiB &&
+        machine->ram_size != 1 * GiB) {
+        error_report("This machine can only be used with 512MiB or 1GiB RAM");
+        exit(1);
+    }
+
     /* Only allow Cortex-A8 for this board */
     if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) {
         error_report("This board can only be used with cortex-a8 CPU");
@@ -XXX,XX +XXX,XX @@ static void cubieboard_machine_init(MachineClass *mc)
 {
     mc->desc = "cubietech cubieboard (Cortex-A8)";
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
+    mc->default_ram_size = 1 * GiB;
     mc->init = cubieboard_init;
     mc->block_default_type = IF_IDE;
     mc->units_per_default_bus = 1;
-- 
2.20.1

From: Niek Linnenbank <nieklinnenbank@gmail.com>

The Cubieboard machine does not support the -bios argument.
Report an error when -bios is used and exit immediately.

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200227220149.6845-5-nieklinnenbank@gmail.com
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/cubieboard.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index XXXXXXX..XXXXXXX 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -XXX,XX +XXX,XX @@
 #include "exec/address-spaces.h"
 #include "qapi/error.h"
 #include "cpu.h"
+#include "sysemu/sysemu.h"
 #include "hw/sysbus.h"
 #include "hw/boards.h"
 #include "hw/arm/allwinner-a10.h"
@@ -XXX,XX +XXX,XX @@ static void cubieboard_init(MachineState *machine)
     AwA10State *a10;
     Error *err = NULL;
 
+    /* BIOS is not supported by this board */
+    if (bios_name) {
+        error_report("BIOS not supported for this machine");
+        exit(1);
+    }
+
     /* This board has fixed size RAM (512MiB or 1GiB) */
     if (machine->ram_size != 512 * MiB &&
         machine->ram_size != 1 * GiB) {
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

Replicate the single TBI bit from TCR_EL2 and TCR_EL3 so that
we can unconditionally use pointer bit 55 to index into our
composite TBI1:TBI0 field.

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 int aa64_va_parameter_tbi(uint64_t tcr, ARMMMUIdx mmu_idx)
     } else if (mmu_idx == ARMMMUIdx_Stage2) {
         return 0; /* VTCR_EL2 */
     } else {
-        return extract32(tcr, 20, 1);
+        /* Replicate the single TBI bit so we always have 2 bits.  */
+        return extract32(tcr, 20, 1) * 3;
     }
 }
 
@@ -XXX,XX +XXX,XX @@ static int aa64_va_parameter_tbid(uint64_t tcr, ARMMMUIdx mmu_idx)
     } else if (mmu_idx == ARMMMUIdx_Stage2) {
         return 0; /* VTCR_EL2 */
     } else {
-        return extract32(tcr, 29, 1);
+        /* Replicate the single TBID bit so we always have 2 bits.  */
+        return extract32(tcr, 29, 1) * 3;
     }
 }
 
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

We now cache the core mmu_idx in env->hflags.  Rather than recompute
from scratch, extract the field.  All of the uses of cpu_mmu_index
within target/arm are within helpers, and env->hflags is always stable
within a translation block from whence helpers are called.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200302175829.2183-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.h    | 23 +++++++++++++----------
 target/arm/helper.c |  5 -----
 2 files changed, 13 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 @@ typedef enum ARMMMUIdxBit {
 
 #define MMU_USER_IDX 0
 
-/**
- * cpu_mmu_index:
- * @env: The cpu environment
- * @ifetch: True for code access, false for data access.
- *
- * Return the core mmu index for the current translation regime.
- * This function is used by generic TCG code paths.
- */
-int cpu_mmu_index(CPUARMState *env, bool ifetch);
-
 /* Indexes used when registering address spaces with cpu_address_space_init */
 typedef enum ARMASIdx {
     ARMASIdx_NS = 0,
@@ -XXX,XX +XXX,XX @@ FIELD(TBFLAG_A64, BTYPE, 10, 2)         /* Not cached. */
 FIELD(TBFLAG_A64, TBID, 12, 2)
 FIELD(TBFLAG_A64, UNPRIV, 14, 1)
 
+/**
+ * cpu_mmu_index:
+ * @env: The cpu environment
+ * @ifetch: True for code access, false for data access.
+ *
+ * Return the core mmu index for the current translation regime.
+ * This function is used by generic TCG code paths.
+ */
+static inline int cpu_mmu_index(CPUARMState *env, bool ifetch)
+{
+    return FIELD_EX32(env->hflags, TBFLAG_ANY, MMUIDX);
+}
+
 static inline bool bswap_code(bool sctlr_b)
 {
 #ifdef CONFIG_USER_ONLY
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 @@ ARMMMUIdx arm_mmu_idx(CPUARMState *env)
     return arm_mmu_idx_el(env, arm_current_el(env));
 }
 
-int cpu_mmu_index(CPUARMState *env, bool ifetch)
-{
-    return arm_to_core_mmu_idx(arm_mmu_idx(env));
-}
-
 #ifndef CONFIG_USER_ONLY
 ARMMMUIdx arm_stage1_mmu_idx(CPUARMState *env)
 {
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

If by context we know that we're in AArch64 mode, we need not
test for M-profile when reconstructing the full ARMMMUIdx.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200302175829.2183-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/internals.h     | 6 ++++++
 target/arm/translate-a64.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/target/arm/internals.h b/target/arm/internals.h
index XXXXXXX..XXXXXXX 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -XXX,XX +XXX,XX @@ static inline ARMMMUIdx core_to_arm_mmu_idx(CPUARMState *env, int mmu_idx)
     }
 }
 
+static inline ARMMMUIdx core_to_aa64_mmu_idx(int mmu_idx)
+{
+    /* AArch64 is always a-profile. */
+    return mmu_idx | ARM_MMU_IDX_A;
+}
+
 int arm_mmu_idx_to_el(ARMMMUIdx mmu_idx);
 
 /*
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 aarch64_tr_init_disas_context(DisasContextBase *dcbase,
     dc->condexec_mask = 0;
     dc->condexec_cond = 0;
     core_mmu_idx = FIELD_EX32(tb_flags, TBFLAG_ANY, MMUIDX);
-    dc->mmu_idx = core_to_arm_mmu_idx(env, core_mmu_idx);
+    dc->mmu_idx = core_to_aa64_mmu_idx(core_mmu_idx);
     dc->tbii = FIELD_EX32(tb_flags, TBFLAG_A64, TBII);
     dc->tbid = FIELD_EX32(tb_flags, TBFLAG_A64, TBID);
     dc->current_el = arm_mmu_idx_to_el(dc->mmu_idx);
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

We missed this case within AArch64.ExceptionReturn.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200302175829.2183-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-a64.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c
index XXXXXXX..XXXXXXX 100644
--- a/target/arm/helper-a64.c
+++ b/target/arm/helper-a64.c
@@ -XXX,XX +XXX,XX @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc)
                       "AArch32 EL%d PC 0x%" PRIx32 "\n",
                       cur_el, new_el, env->regs[15]);
     } else {
+        int tbii;
+
         env->aarch64 = 1;
         spsr &= aarch64_pstate_valid_mask(&env_archcpu(env)->isar);
         pstate_write(env, spsr);
@@ -XXX,XX +XXX,XX @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc)
             env->pstate &= ~PSTATE_SS;
         }
         aarch64_restore_sp(env, new_el);
-        env->pc = new_pc;
         helper_rebuild_hflags_a64(env, new_el);
+
+        /*
+         * Apply TBI to the exception return address.  We had to delay this
+         * until after we selected the new EL, so that we could select the
+         * correct TBI+TBID bits.  This is made easier by waiting until after
+         * the hflags rebuild, since we can pull the composite TBII field
+         * from there.
+         */
+        tbii = FIELD_EX32(env->hflags, TBFLAG_A64, TBII);
+        if ((tbii >> extract64(new_pc, 55, 1)) & 1) {
+            /* TBI is enabled. */
+            int core_mmu_idx = cpu_mmu_index(env, false);
+            if (regime_has_2_ranges(core_to_aa64_mmu_idx(core_mmu_idx))) {
+                new_pc = sextract64(new_pc, 0, 56);
+            } else {
+                new_pc = extract64(new_pc, 0, 56);
+            }
+        }
+        env->pc = new_pc;
+
         qemu_log_mask(CPU_LOG_INT, "Exception return from AArch64 EL%d to "
                       "AArch64 EL%d PC 0x%" PRIx64 "\n",
                       cur_el, new_el, env->pc);
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

This is an aarch64-only function.  Move it out of the shared file.
This patch is code movement only.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200302175829.2183-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-a64.h |  1 +
 target/arm/helper.h     |  1 -
 target/arm/helper-a64.c | 91 ++++++++++++++++++++++++++++++++++++++++
 target/arm/op_helper.c  | 93 -----------------------------------------
 4 files changed, 92 insertions(+), 94 deletions(-)

diff --git a/target/arm/helper-a64.h b/target/arm/helper-a64.h
index XXXXXXX..XXXXXXX 100644
--- a/target/arm/helper-a64.h
+++ b/target/arm/helper-a64.h
@@ -XXX,XX +XXX,XX @@ DEF_HELPER_2(advsimd_f16touinth, i32, f16, ptr)
 DEF_HELPER_2(sqrt_f16, f16, f16, ptr)
 
 DEF_HELPER_2(exception_return, void, env, i64)
+DEF_HELPER_2(dc_zva, void, env, i64)
 
 DEF_HELPER_FLAGS_3(pacia, TCG_CALL_NO_WG, i64, env, i64, i64)
 DEF_HELPER_FLAGS_3(pacib, TCG_CALL_NO_WG, i64, env, i64, i64)
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_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)
 
 DEF_HELPER_FLAGS_5(gvec_qrdmlah_s16, TCG_CALL_NO_RWG,
                    void, ptr, ptr, ptr, ptr, i32)
diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c
index XXXXXXX..XXXXXXX 100644
--- a/target/arm/helper-a64.c
+++ b/target/arm/helper-a64.c
@@ -XXX,XX +XXX,XX @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "cpu.h"
 #include "exec/gdbstub.h"
 #include "exec/helper-proto.h"
@@ -XXX,XX +XXX,XX @@ uint32_t HELPER(sqrt_f16)(uint32_t a, void *fpstp)
     return float16_sqrt(a, s);
 }
 
+void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in)
+{
+    /*
+     * Implement DC ZVA, which zeroes a fixed-length block of memory.
+     * Note that we do not implement the (architecturally mandated)
+     * alignment fault for attempts to use this on Device memory
+     * (which matches the usual QEMU behaviour of not implementing either
+     * alignment faults or any memory attribute handling).
+     */
 
+    ARMCPU *cpu = env_archcpu(env);
+    uint64_t blocklen = 4 << cpu->dcz_blocksize;
+    uint64_t vaddr = vaddr_in & ~(blocklen - 1);
+
+#ifndef CONFIG_USER_ONLY
+    {
+        /*
+         * Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than
+         * the block size so we might have to do more than one TLB lookup.
+         * We know that in fact for any v8 CPU the page size is at least 4K
+         * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only
+         * 1K as an artefact of legacy v5 subpage support being present in the
+         * same QEMU executable. So in practice the hostaddr[] array has
+         * two entries, given the current setting of TARGET_PAGE_BITS_MIN.
+         */
+        int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE);
+        void *hostaddr[DIV_ROUND_UP(2 * KiB, 1 << TARGET_PAGE_BITS_MIN)];
+        int try, i;
+        unsigned mmu_idx = cpu_mmu_index(env, false);
+        TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx);
+
+        assert(maxidx <= ARRAY_SIZE(hostaddr));
+
+        for (try = 0; try < 2; try++) {
+
+            for (i = 0; i < maxidx; i++) {
+                hostaddr[i] = tlb_vaddr_to_host(env,
+                                                vaddr + TARGET_PAGE_SIZE * i,
+                                                1, mmu_idx);
+                if (!hostaddr[i]) {
+                    break;
+                }
+            }
+            if (i == maxidx) {
+                /*
+                 * If it's all in the TLB it's fair game for just writing to;
+                 * we know we don't need to update dirty status, etc.
+                 */
+                for (i = 0; i < maxidx - 1; i++) {
+                    memset(hostaddr[i], 0, TARGET_PAGE_SIZE);
+                }
+                memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE));
+                return;
+            }
+            /*
+             * OK, try a store and see if we can populate the tlb. This
+             * might cause an exception if the memory isn't writable,
+             * in which case we will longjmp out of here. We must for
+             * this purpose use the actual register value passed to us
+             * so that we get the fault address right.
+             */
+            helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETPC());
+            /* Now we can populate the other TLB entries, if any */
+            for (i = 0; i < maxidx; i++) {
+                uint64_t va = vaddr + TARGET_PAGE_SIZE * i;
+                if (va != (vaddr_in & TARGET_PAGE_MASK)) {
+                    helper_ret_stb_mmu(env, va, 0, oi, GETPC());
+                }
+            }
+        }
+
+        /*
+         * Slow path (probably attempt to do this to an I/O device or
+         * similar, or clearing of a block of code we have translations
+         * cached for). Just do a series of byte writes as the architecture
+         * demands. It's not worth trying to use a cpu_physical_memory_map(),
+         * memset(), unmap() sequence here because:
+         *  + we'd need to account for the blocksize being larger than a page
+         *  + the direct-RAM access case is almost always going to be dealt
+         *    with in the fastpath code above, so there's no speed benefit
+         *  + we would have to deal with the map returning NULL because the
+         *    bounce buffer was in use
+         */
+        for (i = 0; i < blocklen; i++) {
+            helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETPC());
+        }
+    }
+#else
+    memset(g2h(vaddr), 0, blocklen);
+#endif
+}
diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c
index XXXXXXX..XXXXXXX 100644
--- a/target/arm/op_helper.c
+++ b/target/arm/op_helper.c
@@ -XXX,XX +XXX,XX @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "qemu/osdep.h"
-#include "qemu/units.h"
 #include "qemu/log.h"
 #include "qemu/main-loop.h"
 #include "cpu.h"
@@ -XXX,XX +XXX,XX @@ uint32_t HELPER(ror_cc)(CPUARMState *env, uint32_t x, uint32_t i)
         return ((uint32_t)x >> shift) | (x << (32 - shift));
     }
 }
-
-void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in)
-{
-    /*
-     * Implement DC ZVA, which zeroes a fixed-length block of memory.
-     * Note that we do not implement the (architecturally mandated)
-     * alignment fault for attempts to use this on Device memory
-     * (which matches the usual QEMU behaviour of not implementing either
-     * alignment faults or any memory attribute handling).
-     */
-
-    ARMCPU *cpu = env_archcpu(env);
-    uint64_t blocklen = 4 << cpu->dcz_blocksize;
-    uint64_t vaddr = vaddr_in & ~(blocklen - 1);
-
-#ifndef CONFIG_USER_ONLY
-    {
-        /*
-         * Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than
-         * the block size so we might have to do more than one TLB lookup.
-         * We know that in fact for any v8 CPU the page size is at least 4K
-         * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only
-         * 1K as an artefact of legacy v5 subpage support being present in the
-         * same QEMU executable. So in practice the hostaddr[] array has
-         * two entries, given the current setting of TARGET_PAGE_BITS_MIN.
-         */
-        int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE);
-        void *hostaddr[DIV_ROUND_UP(2 * KiB, 1 << TARGET_PAGE_BITS_MIN)];
-        int try, i;
-        unsigned mmu_idx = cpu_mmu_index(env, false);
-        TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx);
-
-        assert(maxidx <= ARRAY_SIZE(hostaddr));
-
-        for (try = 0; try < 2; try++) {
-
-            for (i = 0; i < maxidx; i++) {
-                hostaddr[i] = tlb_vaddr_to_host(env,
-                                                vaddr + TARGET_PAGE_SIZE * i,
-                                                1, mmu_idx);
-                if (!hostaddr[i]) {
-                    break;
-                }
-            }
-            if (i == maxidx) {
-                /*
-                 * If it's all in the TLB it's fair game for just writing to;
-                 * we know we don't need to update dirty status, etc.
-                 */
-                for (i = 0; i < maxidx - 1; i++) {
-                    memset(hostaddr[i], 0, TARGET_PAGE_SIZE);
-                }
-                memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE));
-                return;
-            }
-            /*
-             * OK, try a store and see if we can populate the tlb. This
-             * might cause an exception if the memory isn't writable,
-             * in which case we will longjmp out of here. We must for
-             * this purpose use the actual register value passed to us
-             * so that we get the fault address right.
-             */
-            helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETPC());
-            /* Now we can populate the other TLB entries, if any */
-            for (i = 0; i < maxidx; i++) {
-                uint64_t va = vaddr + TARGET_PAGE_SIZE * i;
-                if (va != (vaddr_in & TARGET_PAGE_MASK)) {
-                    helper_ret_stb_mmu(env, va, 0, oi, GETPC());
-                }
-            }
-        }
-
-        /*
-         * Slow path (probably attempt to do this to an I/O device or
-         * similar, or clearing of a block of code we have translations
-         * cached for). Just do a series of byte writes as the architecture
-         * demands. It's not worth trying to use a cpu_physical_memory_map(),
-         * memset(), unmap() sequence here because:
-         *  + we'd need to account for the blocksize being larger than a page
-         *  + the direct-RAM access case is almost always going to be dealt
-         *    with in the fastpath code above, so there's no speed benefit
-         *  + we would have to deal with the map returning NULL because the
-         *    bounce buffer was in use
-         */
-        for (i = 0; i < blocklen; i++) {
-            helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETPC());
-        }
-    }
-#else
-    memset(g2h(vaddr), 0, blocklen);
-#endif
-}
-- 
2.20.1

From: Richard Henderson <richard.henderson@linaro.org>

The function does not write registers, and only reads them by
implication via the exception path.

From: Richard Henderson <richard.henderson@linaro.org>

This data access was forgotten when we added support for cleaning
addresses of TBI information.

Fixes: 3a471103ac1823ba
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200302175829.2183-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/translate-a64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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 handle_sys(DisasContext *s, uint32_t insn, bool isread,
         return;
     case ARM_CP_DC_ZVA:
         /* Writes clear the aligned block of memory which rt points into. */
-        tcg_rt = cpu_reg(s, rt);
+        tcg_rt = clean_data_tbi(s, cpu_reg(s, rt));
         gen_helper_dc_zva(cpu_env, tcg_rt);
         return;
     default:
-- 
2.20.1

v3->v4: Windows headers define an INT type which clashed
with an enum value name in arm_gicv3_its.c...

The following changes since commit eae587e8e3694b1aceab23239493fb4c7e1a80f5:

Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2021-09-13' into staging (2021-09-13 11:00:30 +0100)

are available in the Git repository at:

https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20210913-3

for you to fetch changes up to 28e987a7e7edaa3ca7feeac65edca26145df8814:

hw/arm/mps2.c: Mark internal-only I2C buses as 'full' (2021-09-13 21:01:08 +0100)

----------------------------------------------------------------
target-arm queue:
 * mark MPS2/MPS3 board-internal i2c buses as 'full' so that command
   line user-created devices are not plugged into them
 * Take an exception if PSTATE.IL is set
 * Support an emulated ITS in the virt board
 * Add support for kudo-bmc board
 * Probe for KVM_CAP_ARM_VM_IPA_SIZE when creating scratch VM
 * cadence_uart: Fix clock handling issues that prevented
   u-boot from running

----------------------------------------------------------------
Bin Meng (6):
      hw/misc: zynq_slcr: Correctly compute output clocks in the reset exit phase
      hw/char: cadence_uart: Disable transmit when input clock is disabled
      hw/char: cadence_uart: Move clock/reset check to uart_can_receive()
      hw/char: cadence_uart: Convert to memop_with_attrs() ops
      hw/char: cadence_uart: Ignore access when unclocked or in reset for uart_{read, write}()
      hw/char: cadence_uart: Log a guest error when device is unclocked or in reset

Chris Rauer (1):
      hw/arm: Add support for kudo-bmc board.

Marc Zyngier (1):
      hw/arm/virt: KVM: Probe for KVM_CAP_ARM_VM_IPA_SIZE when creating scratch VM

Peter Maydell (5):
      target/arm: Take an exception if PSTATE.IL is set
      qdev: Support marking individual buses as 'full'
      hw/arm/mps2-tz.c: Add extra data parameter to MakeDevFn
      hw/arm/mps2-tz.c: Mark internal-only I2C buses as 'full'
      hw/arm/mps2.c: Mark internal-only I2C buses as 'full'

Richard Henderson (1):
      target/arm: Merge disas_a64_insn into aarch64_tr_translate_insn

Shashi Mallela (9):
      hw/intc: GICv3 ITS initial framework
      hw/intc: GICv3 ITS register definitions added
      hw/intc: GICv3 ITS command queue framework
      hw/intc: GICv3 ITS Command processing
      hw/intc: GICv3 ITS Feature enablement
      hw/intc: GICv3 redistributor ITS processing
      tests/data/acpi/virt: Add IORT files for ITS
      hw/arm/virt: add ITS support in virt GIC
      tests/data/acpi/virt: Update IORT files for ITS