[PULL 00/16] riscv-to-apply queue
[PULL 0/3] riscv-to-apply queue
1
The following changes since commit c95bd5ff1660883d15ad6e0005e4c8571604f51a:
1
The following changes since commit b876e721f1c939f3e83ac85bd3c1c2821e12b3fa:
2
2
3
Merge remote-tracking branch 'remotes/philmd/tags/mips-fixes-20210322' into staging (2021-03-22 14:26:13 +0000)
3
Update version for v10.0.0-rc1 release (2025-03-25 13:58:14 -0400)
4
4
5
are available in the Git repository at:
5
are available in the Git repository at:
6
6
7
git@github.com:alistair23/qemu.git tags/pull-riscv-to-apply-20210322-2
7
https://github.com/alistair23/qemu.git tags/pull-riscv-to-apply-20250328
8
8
9
for you to fetch changes up to 9a27f69bd668d9d71674407badc412ce1231c7d5:
9
for you to fetch changes up to 897c68fb795cf03b89b6688a6f945d68a765c3e4:
10
10
11
target/riscv: Prevent lost illegal instruction exceptions (2021-03-22 21:54:40 -0400)
11
Revert "target/riscv/kvm: add missing KVM CSRs" (2025-03-28 16:50:25 +1000)
12
12
13
----------------------------------------------------------------
13
----------------------------------------------------------------
14
RISC-V PR for 6.0
14
Fifth RISC-V PR for 10.0
15
15
16
This PR includes:
16
* Add docs/specs/riscv-iommu.rst to MAINTAINERS
17
- Fix for vector CSR access
17
* Fix broken link to external risv iommu document
18
- Improvements to the Ibex UART device
18
* Revert scounteren and senvcfg to fixup older kernel boots
19
- PMP improvements and bug fixes
20
- Hypervisor extension bug fixes
21
- ramfb support for the virt machine
22
- Fast read support for SST flash
23
- Improvements to the microchip_pfsoc machine
24
19
25
----------------------------------------------------------------
20
----------------------------------------------------------------
26
Alexander Wagner (1):
21
Daniel Henrique Barboza (1):
27
hw/char: disable ibex uart receive if the buffer is full
22
Revert "target/riscv/kvm: add missing KVM CSRs"
28
23
29
Asherah Connor (2):
24
hemanshu.khilari.foss (2):
30
hw/riscv: Add fw_cfg support to virt
25
docs: Added docs/specs/riscv-iommu.rst in MAINTAINERS file.
31
hw/riscv: allow ramfb on virt
26
docs/specs/riscv-iommu: Fixed broken link to external risv iommu document
32
27
33
Bin Meng (3):
28
MAINTAINERS | 1 +
34
hw/block: m25p80: Support fast read for SST flashes
29
docs/specs/riscv-iommu.rst | 6 +++---
35
hw/riscv: microchip_pfsoc: Map EMMC/SD mux register
30
target/riscv/kvm/kvm-cpu.c | 6 ------
36
docs/system: riscv: Add documentation for 'microchip-icicle-kit' machine
31
3 files changed, 4 insertions(+), 9 deletions(-)
37
38
Frank Chang (1):
39
target/riscv: fix vs() to return proper error code
40
41
Georg Kotheimer (6):
42
target/riscv: Adjust privilege level for HLV(X)/HSV instructions
43
target/riscv: Make VSTIP and VSEIP read-only in hip
44
target/riscv: Use background registers also for MSTATUS_MPV
45
target/riscv: Fix read and write accesses to vsip and vsie
46
target/riscv: Add proper two-stage lookup exception detection
47
target/riscv: Prevent lost illegal instruction exceptions
48
49
Jim Shu (3):
50
target/riscv: propagate PMP permission to TLB page
51
target/riscv: add log of PMP permission checking
52
target/riscv: flush TLB pages if PMP permission has been changed
53
54
docs/system/riscv/microchip-icicle-kit.rst | 89 ++++++++++++++
55
docs/system/target-riscv.rst | 1 +
56
include/hw/char/ibex_uart.h | 4 +
57
include/hw/riscv/microchip_pfsoc.h | 1 +
58
include/hw/riscv/virt.h | 2 +
59
target/riscv/cpu.h | 4 +
60
target/riscv/pmp.h | 4 +-
61
hw/block/m25p80.c | 3 +
62
hw/char/ibex_uart.c | 23 +++-
63
hw/riscv/microchip_pfsoc.c | 6 +
64
hw/riscv/virt.c | 33 ++++++
65
target/riscv/cpu.c | 1 +
66
target/riscv/cpu_helper.c | 144 +++++++++++++++--------
67
target/riscv/csr.c | 77 +++++++------
68
target/riscv/pmp.c | 84 ++++++++++----
69
target/riscv/translate.c | 179 +----------------------------
70
hw/riscv/Kconfig | 1 +
71
17 files changed, 367 insertions(+), 289 deletions(-)
72
create mode 100644 docs/system/riscv/microchip-icicle-kit.rst
73
diff view generated by jsdifflib
[PULL 01/16] target/riscv: fix vs() to return proper error code
Deleted patch
1
From: Frank Chang <frank.chang@sifive.com>
2
1
3
vs() should return -RISCV_EXCP_ILLEGAL_INST instead of -1 if rvv feature
4
is not enabled.
5
6
If -1 is returned, exception will be raised and cs->exception_index will
7
be set to the negative return value. The exception will then be treated
8
as an instruction access fault instead of illegal instruction fault.
9
10
Signed-off-by: Frank Chang <frank.chang@sifive.com>
11
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
12
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
13
Message-id: 20210223065935.20208-1-frank.chang@sifive.com
14
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
15
---
16
target/riscv/csr.c | 2 +-
17
1 file changed, 1 insertion(+), 1 deletion(-)
18
19
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
20
index XXXXXXX..XXXXXXX 100644
21
--- a/target/riscv/csr.c
22
+++ b/target/riscv/csr.c
23
@@ -XXX,XX +XXX,XX @@ static int vs(CPURISCVState *env, int csrno)
24
if (env->misa & RVV) {
25
return 0;
26
}
27
- return -1;
28
+ return -RISCV_EXCP_ILLEGAL_INST;
29
}
30
31
static int ctr(CPURISCVState *env, int csrno)
32
--
33
2.30.1
34
35
diff view generated by jsdifflib
[PULL 02/16] hw/char: disable ibex uart receive if the buffer is full
Deleted patch
1
From: Alexander Wagner <alexander.wagner@ulal.de>
2
1
3
Not disabling the UART leads to QEMU overwriting the UART receive buffer with
4
the newest received byte. The rx_level variable is added to allow the use of
5
the existing OpenTitan driver libraries.
6
7
Signed-off-by: Alexander Wagner <alexander.wagner@ulal.de>
8
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
9
Message-id: 20210309152130.13038-1-alexander.wagner@ulal.de
10
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
11
---
12
include/hw/char/ibex_uart.h | 4 ++++
13
hw/char/ibex_uart.c | 23 ++++++++++++++++++-----
14
2 files changed, 22 insertions(+), 5 deletions(-)
15
16
diff --git a/include/hw/char/ibex_uart.h b/include/hw/char/ibex_uart.h
17
index XXXXXXX..XXXXXXX 100644
18
--- a/include/hw/char/ibex_uart.h
19
+++ b/include/hw/char/ibex_uart.h
20
@@ -XXX,XX +XXX,XX @@ REG32(FIFO_CTRL, 0x1c)
21
FIELD(FIFO_CTRL, RXILVL, 2, 3)
22
FIELD(FIFO_CTRL, TXILVL, 5, 2)
23
REG32(FIFO_STATUS, 0x20)
24
+ FIELD(FIFO_STATUS, TXLVL, 0, 5)
25
+ FIELD(FIFO_STATUS, RXLVL, 16, 5)
26
REG32(OVRD, 0x24)
27
REG32(VAL, 0x28)
28
REG32(TIMEOUT_CTRL, 0x2c)
29
@@ -XXX,XX +XXX,XX @@ struct IbexUartState {
30
uint8_t tx_fifo[IBEX_UART_TX_FIFO_SIZE];
31
uint32_t tx_level;
32
33
+ uint32_t rx_level;
34
+
35
QEMUTimer *fifo_trigger_handle;
36
uint64_t char_tx_time;
37
38
diff --git a/hw/char/ibex_uart.c b/hw/char/ibex_uart.c
39
index XXXXXXX..XXXXXXX 100644
40
--- a/hw/char/ibex_uart.c
41
+++ b/hw/char/ibex_uart.c
42
@@ -XXX,XX +XXX,XX @@ static int ibex_uart_can_receive(void *opaque)
43
{
44
IbexUartState *s = opaque;
45
46
- if (s->uart_ctrl & R_CTRL_RX_ENABLE_MASK) {
47
+ if ((s->uart_ctrl & R_CTRL_RX_ENABLE_MASK)
48
+ && !(s->uart_status & R_STATUS_RXFULL_MASK)) {
49
return 1;
50
}
51
52
@@ -XXX,XX +XXX,XX @@ static void ibex_uart_receive(void *opaque, const uint8_t *buf, int size)
53
54
s->uart_status &= ~R_STATUS_RXIDLE_MASK;
55
s->uart_status &= ~R_STATUS_RXEMPTY_MASK;
56
+ /* The RXFULL is set after receiving a single byte
57
+ * as the FIFO buffers are not yet implemented.
58
+ */
59
+ s->uart_status |= R_STATUS_RXFULL_MASK;
60
+ s->rx_level += 1;
61
62
if (size > rx_fifo_level) {
63
s->uart_intr_state |= R_INTR_STATE_RX_WATERMARK_MASK;
64
@@ -XXX,XX +XXX,XX @@ static void ibex_uart_reset(DeviceState *dev)
65
s->uart_timeout_ctrl = 0x00000000;
66
67
s->tx_level = 0;
68
+ s->rx_level = 0;
69
70
s->char_tx_time = (NANOSECONDS_PER_SECOND / 230400) * 10;
71
72
@@ -XXX,XX +XXX,XX @@ static uint64_t ibex_uart_read(void *opaque, hwaddr addr,
73
74
case R_RDATA:
75
retvalue = s->uart_rdata;
76
- if (s->uart_ctrl & R_CTRL_RX_ENABLE_MASK) {
77
+ if ((s->uart_ctrl & R_CTRL_RX_ENABLE_MASK) && (s->rx_level > 0)) {
78
qemu_chr_fe_accept_input(&s->chr);
79
80
- s->uart_status |= R_STATUS_RXIDLE_MASK;
81
- s->uart_status |= R_STATUS_RXEMPTY_MASK;
82
+ s->rx_level -= 1;
83
+ s->uart_status &= ~R_STATUS_RXFULL_MASK;
84
+ if (s->rx_level == 0) {
85
+ s->uart_status |= R_STATUS_RXIDLE_MASK;
86
+ s->uart_status |= R_STATUS_RXEMPTY_MASK;
87
+ }
88
}
89
break;
90
case R_WDATA:
91
@@ -XXX,XX +XXX,XX @@ static uint64_t ibex_uart_read(void *opaque, hwaddr addr,
92
case R_FIFO_STATUS:
93
retvalue = s->uart_fifo_status;
94
95
- retvalue |= s->tx_level & 0x1F;
96
+ retvalue |= (s->rx_level & 0x1F) << R_FIFO_STATUS_RXLVL_SHIFT;
97
+ retvalue |= (s->tx_level & 0x1F) << R_FIFO_STATUS_TXLVL_SHIFT;
98
99
qemu_log_mask(LOG_UNIMP,
100
"%s: RX fifos are not supported\n", __func__);
101
@@ -XXX,XX +XXX,XX @@ static void ibex_uart_write(void *opaque, hwaddr addr,
102
s->uart_fifo_ctrl = value;
103
104
if (value & R_FIFO_CTRL_RXRST_MASK) {
105
+ s->rx_level = 0;
106
qemu_log_mask(LOG_UNIMP,
107
"%s: RX fifos are not supported\n", __func__);
108
}
109
--
110
2.30.1
111
112
diff view generated by jsdifflib
[PULL 03/16] target/riscv: propagate PMP permission to TLB page
Deleted patch
1
From: Jim Shu <cwshu@andestech.com>
2
1
3
Currently, PMP permission checking of TLB page is bypassed if TLB hits
4
Fix it by propagating PMP permission to TLB page permission.
5
6
PMP permission checking also use MMU-style API to change TLB permission
7
and size.
8
9
Signed-off-by: Jim Shu <cwshu@andestech.com>
10
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
11
Message-id: 1613916082-19528-2-git-send-email-cwshu@andestech.com
12
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
13
---
14
target/riscv/pmp.h | 4 +-
15
target/riscv/cpu_helper.c | 84 +++++++++++++++++++++++++++++----------
16
target/riscv/pmp.c | 80 +++++++++++++++++++++++++++----------
17
3 files changed, 125 insertions(+), 43 deletions(-)
18
19
diff --git a/target/riscv/pmp.h b/target/riscv/pmp.h
20
index XXXXXXX..XXXXXXX 100644
21
--- a/target/riscv/pmp.h
22
+++ b/target/riscv/pmp.h
23
@@ -XXX,XX +XXX,XX @@ void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index,
24
target_ulong val);
25
target_ulong pmpaddr_csr_read(CPURISCVState *env, uint32_t addr_index);
26
bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
27
- target_ulong size, pmp_priv_t priv, target_ulong mode);
28
+ target_ulong size, pmp_priv_t privs, pmp_priv_t *allowed_privs,
29
+ target_ulong mode);
30
bool pmp_is_range_in_tlb(CPURISCVState *env, hwaddr tlb_sa,
31
target_ulong *tlb_size);
32
void pmp_update_rule_addr(CPURISCVState *env, uint32_t pmp_index);
33
void pmp_update_rule_nums(CPURISCVState *env);
34
uint32_t pmp_get_num_rules(CPURISCVState *env);
35
+int pmp_priv_to_page_prot(pmp_priv_t pmp_priv);
36
37
#endif
38
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
39
index XXXXXXX..XXXXXXX 100644
40
--- a/target/riscv/cpu_helper.c
41
+++ b/target/riscv/cpu_helper.c
42
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv)
43
env->load_res = -1;
44
}
45
46
+/*
47
+ * get_physical_address_pmp - check PMP permission for this physical address
48
+ *
49
+ * Match the PMP region and check permission for this physical address and it's
50
+ * TLB page. Returns 0 if the permission checking was successful
51
+ *
52
+ * @env: CPURISCVState
53
+ * @prot: The returned protection attributes
54
+ * @tlb_size: TLB page size containing addr. It could be modified after PMP
55
+ * permission checking. NULL if not set TLB page for addr.
56
+ * @addr: The physical address to be checked permission
57
+ * @access_type: The type of MMU access
58
+ * @mode: Indicates current privilege level.
59
+ */
60
+static int get_physical_address_pmp(CPURISCVState *env, int *prot,
61
+ target_ulong *tlb_size, hwaddr addr,
62
+ int size, MMUAccessType access_type,
63
+ int mode)
64
+{
65
+ pmp_priv_t pmp_priv;
66
+ target_ulong tlb_size_pmp = 0;
67
+
68
+ if (!riscv_feature(env, RISCV_FEATURE_PMP)) {
69
+ *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
70
+ return TRANSLATE_SUCCESS;
71
+ }
72
+
73
+ if (!pmp_hart_has_privs(env, addr, size, 1 << access_type, &pmp_priv,
74
+ mode)) {
75
+ *prot = 0;
76
+ return TRANSLATE_PMP_FAIL;
77
+ }
78
+
79
+ *prot = pmp_priv_to_page_prot(pmp_priv);
80
+ if (tlb_size != NULL) {
81
+ if (pmp_is_range_in_tlb(env, addr & ~(*tlb_size - 1), &tlb_size_pmp)) {
82
+ *tlb_size = tlb_size_pmp;
83
+ }
84
+ }
85
+
86
+ return TRANSLATE_SUCCESS;
87
+}
88
+
89
/* get_physical_address - get the physical address for this virtual address
90
*
91
* Do a page table walk to obtain the physical address corresponding to a
92
@@ -XXX,XX +XXX,XX @@ restart:
93
pte_addr = base + idx * ptesize;
94
}
95
96
- if (riscv_feature(env, RISCV_FEATURE_PMP) &&
97
- !pmp_hart_has_privs(env, pte_addr, sizeof(target_ulong),
98
- 1 << MMU_DATA_LOAD, PRV_S)) {
99
+ int pmp_prot;
100
+ int pmp_ret = get_physical_address_pmp(env, &pmp_prot, NULL, pte_addr,
101
+ sizeof(target_ulong),
102
+ MMU_DATA_LOAD, PRV_S);
103
+ if (pmp_ret != TRANSLATE_SUCCESS) {
104
return TRANSLATE_PMP_FAIL;
105
}
106
107
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
108
#ifndef CONFIG_USER_ONLY
109
vaddr im_address;
110
hwaddr pa = 0;
111
- int prot, prot2;
112
+ int prot, prot2, prot_pmp;
113
bool pmp_violation = false;
114
bool first_stage_error = true;
115
bool two_stage_lookup = false;
116
int ret = TRANSLATE_FAIL;
117
int mode = mmu_idx;
118
- target_ulong tlb_size = 0;
119
+ /* default TLB page size */
120
+ target_ulong tlb_size = TARGET_PAGE_SIZE;
121
122
env->guest_phys_fault_addr = 0;
123
124
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
125
126
prot &= prot2;
127
128
- if (riscv_feature(env, RISCV_FEATURE_PMP) &&
129
- (ret == TRANSLATE_SUCCESS) &&
130
- !pmp_hart_has_privs(env, pa, size, 1 << access_type, mode)) {
131
- ret = TRANSLATE_PMP_FAIL;
132
+ if (ret == TRANSLATE_SUCCESS) {
133
+ ret = get_physical_address_pmp(env, &prot_pmp, &tlb_size, pa,
134
+ size, access_type, mode);
135
+ prot &= prot_pmp;
136
}
137
138
if (ret != TRANSLATE_SUCCESS) {
139
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
140
"%s address=%" VADDR_PRIx " ret %d physical "
141
TARGET_FMT_plx " prot %d\n",
142
__func__, address, ret, pa, prot);
143
- }
144
145
- if (riscv_feature(env, RISCV_FEATURE_PMP) &&
146
- (ret == TRANSLATE_SUCCESS) &&
147
- !pmp_hart_has_privs(env, pa, size, 1 << access_type, mode)) {
148
- ret = TRANSLATE_PMP_FAIL;
149
+ if (ret == TRANSLATE_SUCCESS) {
150
+ ret = get_physical_address_pmp(env, &prot_pmp, &tlb_size, pa,
151
+ size, access_type, mode);
152
+ prot &= prot_pmp;
153
+ }
154
}
155
+
156
if (ret == TRANSLATE_PMP_FAIL) {
157
pmp_violation = true;
158
}
159
160
if (ret == TRANSLATE_SUCCESS) {
161
- if (pmp_is_range_in_tlb(env, pa & TARGET_PAGE_MASK, &tlb_size)) {
162
- tlb_set_page(cs, address & ~(tlb_size - 1), pa & ~(tlb_size - 1),
163
- prot, mmu_idx, tlb_size);
164
- } else {
165
- tlb_set_page(cs, address & TARGET_PAGE_MASK, pa & TARGET_PAGE_MASK,
166
- prot, mmu_idx, TARGET_PAGE_SIZE);
167
- }
168
+ tlb_set_page(cs, address & ~(tlb_size - 1), pa & ~(tlb_size - 1),
169
+ prot, mmu_idx, tlb_size);
170
return true;
171
} else if (probe) {
172
return false;
173
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
174
index XXXXXXX..XXXXXXX 100644
175
--- a/target/riscv/pmp.c
176
+++ b/target/riscv/pmp.c
177
@@ -XXX,XX +XXX,XX @@ static int pmp_is_in_range(CPURISCVState *env, int pmp_index, target_ulong addr)
178
return result;
179
}
180
181
+/*
182
+ * Check if the address has required RWX privs when no PMP entry is matched.
183
+ */
184
+static bool pmp_hart_has_privs_default(CPURISCVState *env, target_ulong addr,
185
+ target_ulong size, pmp_priv_t privs, pmp_priv_t *allowed_privs,
186
+ target_ulong mode)
187
+{
188
+ bool ret;
189
+
190
+ if ((!riscv_feature(env, RISCV_FEATURE_PMP)) || (mode == PRV_M)) {
191
+ /*
192
+ * Privileged spec v1.10 states if HW doesn't implement any PMP entry
193
+ * or no PMP entry matches an M-Mode access, the access succeeds.
194
+ */
195
+ ret = true;
196
+ *allowed_privs = PMP_READ | PMP_WRITE | PMP_EXEC;
197
+ } else {
198
+ /*
199
+ * Other modes are not allowed to succeed if they don't * match a rule,
200
+ * but there are rules. We've checked for no rule earlier in this
201
+ * function.
202
+ */
203
+ ret = false;
204
+ *allowed_privs = 0;
205
+ }
206
+
207
+ return ret;
208
+}
209
+
210
211
/*
212
* Public Interface
213
@@ -XXX,XX +XXX,XX @@ static int pmp_is_in_range(CPURISCVState *env, int pmp_index, target_ulong addr)
214
* Check if the address has required RWX privs to complete desired operation
215
*/
216
bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
217
- target_ulong size, pmp_priv_t privs, target_ulong mode)
218
+ target_ulong size, pmp_priv_t privs, pmp_priv_t *allowed_privs,
219
+ target_ulong mode)
220
{
221
int i = 0;
222
int ret = -1;
223
int pmp_size = 0;
224
target_ulong s = 0;
225
target_ulong e = 0;
226
- pmp_priv_t allowed_privs = 0;
227
228
/* Short cut if no rules */
229
if (0 == pmp_get_num_rules(env)) {
230
- return (env->priv == PRV_M) ? true : false;
231
+ return pmp_hart_has_privs_default(env, addr, size, privs,
232
+ allowed_privs, mode);
233
}
234
235
if (size == 0) {
236
@@ -XXX,XX +XXX,XX @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
237
* check
238
*/
239
if (((s + e) == 2) && (PMP_AMATCH_OFF != a_field)) {
240
- allowed_privs = PMP_READ | PMP_WRITE | PMP_EXEC;
241
+ *allowed_privs = PMP_READ | PMP_WRITE | PMP_EXEC;
242
if ((mode != PRV_M) || pmp_is_locked(env, i)) {
243
- allowed_privs &= env->pmp_state.pmp[i].cfg_reg;
244
+ *allowed_privs &= env->pmp_state.pmp[i].cfg_reg;
245
}
246
247
- if ((privs & allowed_privs) == privs) {
248
- ret = 1;
249
- break;
250
- } else {
251
- ret = 0;
252
- break;
253
- }
254
+ ret = ((privs & *allowed_privs) == privs);
255
+ break;
256
}
257
}
258
259
/* No rule matched */
260
if (ret == -1) {
261
- if (mode == PRV_M) {
262
- ret = 1; /* Privileged spec v1.10 states if no PMP entry matches an
263
- * M-Mode access, the access succeeds */
264
- } else {
265
- ret = 0; /* Other modes are not allowed to succeed if they don't
266
- * match a rule, but there are rules. We've checked for
267
- * no rule earlier in this function. */
268
- }
269
+ return pmp_hart_has_privs_default(env, addr, size, privs,
270
+ allowed_privs, mode);
271
}
272
273
return ret == 1 ? true : false;
274
}
275
276
-
277
/*
278
* Handle a write to a pmpcfg CSP
279
*/
280
@@ -XXX,XX +XXX,XX @@ bool pmp_is_range_in_tlb(CPURISCVState *env, hwaddr tlb_sa,
281
282
return false;
283
}
284
+
285
+/*
286
+ * Convert PMP privilege to TLB page privilege.
287
+ */
288
+int pmp_priv_to_page_prot(pmp_priv_t pmp_priv)
289
+{
290
+ int prot = 0;
291
+
292
+ if (pmp_priv & PMP_READ) {
293
+ prot |= PAGE_READ;
294
+ }
295
+ if (pmp_priv & PMP_WRITE) {
296
+ prot |= PAGE_WRITE;
297
+ }
298
+ if (pmp_priv & PMP_EXEC) {
299
+ prot |= PAGE_EXEC;
300
+ }
301
+
302
+ return prot;
303
+}
304
--
305
2.30.1
306
307
diff view generated by jsdifflib
[PULL 04/16] target/riscv: add log of PMP permission checking
Deleted patch
1
From: Jim Shu <cwshu@andestech.com>
2
1
3
Like MMU translation, add qemu log of PMP permission checking for
4
debugging.
5
6
Signed-off-by: Jim Shu <cwshu@andestech.com>
7
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
8
Message-id: 1613916082-19528-3-git-send-email-cwshu@andestech.com
9
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
10
---
11
target/riscv/cpu_helper.c | 12 ++++++++++++
12
1 file changed, 12 insertions(+)
13
14
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
15
index XXXXXXX..XXXXXXX 100644
16
--- a/target/riscv/cpu_helper.c
17
+++ b/target/riscv/cpu_helper.c
18
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
19
if (ret == TRANSLATE_SUCCESS) {
20
ret = get_physical_address_pmp(env, &prot_pmp, &tlb_size, pa,
21
size, access_type, mode);
22
+
23
+ qemu_log_mask(CPU_LOG_MMU,
24
+ "%s PMP address=" TARGET_FMT_plx " ret %d prot"
25
+ " %d tlb_size " TARGET_FMT_lu "\n",
26
+ __func__, pa, ret, prot_pmp, tlb_size);
27
+
28
prot &= prot_pmp;
29
}
30
31
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
32
if (ret == TRANSLATE_SUCCESS) {
33
ret = get_physical_address_pmp(env, &prot_pmp, &tlb_size, pa,
34
size, access_type, mode);
35
+
36
+ qemu_log_mask(CPU_LOG_MMU,
37
+ "%s PMP address=" TARGET_FMT_plx " ret %d prot"
38
+ " %d tlb_size " TARGET_FMT_lu "\n",
39
+ __func__, pa, ret, prot_pmp, tlb_size);
40
+
41
prot &= prot_pmp;
42
}
43
}
44
--
45
2.30.1
46
47
diff view generated by jsdifflib
[PULL 16/16] target/riscv: Prevent lost illegal instruction exceptions
[PULL 1/3] docs: Added docs/specs/riscv-iommu.rst in MAINTAINERS file.
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
1
From: "hemanshu.khilari.foss" <hemanshu.khilari.foss@gmail.com>
2
2
3
When decode_insn16() fails, we fall back to decode_RV32_64C() for
3
Added docs/specs/riscv-iommu.rst under `RISC-V TCG CPUs` section in
4
further compressed instruction decoding. However, prior to this change,
4
in MAINTAINERS file since
5
we did not raise an illegal instruction exception, if decode_RV32_64C()
5
`scripts/get_maintainer.pl -f docs/specs/riscv-iommu.rst` doesn't list any
6
fails to decode the instruction. This means that we skipped illegal
6
maintainers.
7
compressed instructions instead of raising an illegal instruction
8
exception.
9
7
10
Instead of patching decode_RV32_64C(), we can just remove it,
8
Signed-off-by: hemanshu.khilari.foss <hemanshu.khilari.foss@gmail.com>
11
as it is dead code since f330433b363 anyway.
12
13
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
14
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
9
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
15
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
10
Message-ID: <20250323140151.9994-1-hemanshu.khilari.foss@gmail.com>
16
Message-id: 20210322121609.3097928-1-georg.kotheimer@kernkonzept.com
17
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
11
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
18
---
12
---
19
target/riscv/translate.c | 179 +--------------------------------------
13
MAINTAINERS | 1 +
20
1 file changed, 1 insertion(+), 178 deletions(-)
14
1 file changed, 1 insertion(+)
21
15
22
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
16
diff --git a/MAINTAINERS b/MAINTAINERS
23
index XXXXXXX..XXXXXXX 100644
17
index XXXXXXX..XXXXXXX 100644
24
--- a/target/riscv/translate.c
18
--- a/MAINTAINERS
25
+++ b/target/riscv/translate.c
19
+++ b/MAINTAINERS
26
@@ -XXX,XX +XXX,XX @@ typedef struct DisasContext {
20
@@ -XXX,XX +XXX,XX @@ L: qemu-riscv@nongnu.org
27
CPUState *cs;
21
S: Supported
28
} DisasContext;
22
F: configs/targets/riscv*
29
23
F: docs/system/target-riscv.rst
30
-#ifdef TARGET_RISCV64
24
+F: docs/specs/riscv-iommu.rst
31
-/* convert riscv funct3 to qemu memop for load/store */
25
F: target/riscv/
32
-static const int tcg_memop_lookup[8] = {
26
F: hw/char/riscv_htif.c
33
- [0 ... 7] = -1,
27
F: hw/riscv/
34
- [0] = MO_SB,
35
- [1] = MO_TESW,
36
- [2] = MO_TESL,
37
- [3] = MO_TEQ,
38
- [4] = MO_UB,
39
- [5] = MO_TEUW,
40
- [6] = MO_TEUL,
41
-};
42
-#endif
43
-
44
#ifdef TARGET_RISCV64
45
#define CASE_OP_32_64(X) case X: case glue(X, W)
46
#else
47
@@ -XXX,XX +XXX,XX @@ static void gen_jal(DisasContext *ctx, int rd, target_ulong imm)
48
ctx->base.is_jmp = DISAS_NORETURN;
49
}
50
51
-#ifdef TARGET_RISCV64
52
-static void gen_load_c(DisasContext *ctx, uint32_t opc, int rd, int rs1,
53
- target_long imm)
54
-{
55
- TCGv t0 = tcg_temp_new();
56
- TCGv t1 = tcg_temp_new();
57
- gen_get_gpr(t0, rs1);
58
- tcg_gen_addi_tl(t0, t0, imm);
59
- int memop = tcg_memop_lookup[(opc >> 12) & 0x7];
60
-
61
- if (memop < 0) {
62
- gen_exception_illegal(ctx);
63
- return;
64
- }
65
-
66
- tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, memop);
67
- gen_set_gpr(rd, t1);
68
- tcg_temp_free(t0);
69
- tcg_temp_free(t1);
70
-}
71
-
72
-static void gen_store_c(DisasContext *ctx, uint32_t opc, int rs1, int rs2,
73
- target_long imm)
74
-{
75
- TCGv t0 = tcg_temp_new();
76
- TCGv dat = tcg_temp_new();
77
- gen_get_gpr(t0, rs1);
78
- tcg_gen_addi_tl(t0, t0, imm);
79
- gen_get_gpr(dat, rs2);
80
- int memop = tcg_memop_lookup[(opc >> 12) & 0x7];
81
-
82
- if (memop < 0) {
83
- gen_exception_illegal(ctx);
84
- return;
85
- }
86
-
87
- tcg_gen_qemu_st_tl(dat, t0, ctx->mem_idx, memop);
88
- tcg_temp_free(t0);
89
- tcg_temp_free(dat);
90
-}
91
-#endif
92
-
93
#ifndef CONFIG_USER_ONLY
94
/* The states of mstatus_fs are:
95
* 0 = disabled, 1 = initial, 2 = clean, 3 = dirty
96
@@ -XXX,XX +XXX,XX @@ static void mark_fs_dirty(DisasContext *ctx)
97
static inline void mark_fs_dirty(DisasContext *ctx) { }
98
#endif
99
100
-#if !defined(TARGET_RISCV64)
101
-static void gen_fp_load(DisasContext *ctx, uint32_t opc, int rd,
102
- int rs1, target_long imm)
103
-{
104
- TCGv t0;
105
-
106
- if (ctx->mstatus_fs == 0) {
107
- gen_exception_illegal(ctx);
108
- return;
109
- }
110
-
111
- t0 = tcg_temp_new();
112
- gen_get_gpr(t0, rs1);
113
- tcg_gen_addi_tl(t0, t0, imm);
114
-
115
- switch (opc) {
116
- case OPC_RISC_FLW:
117
- if (!has_ext(ctx, RVF)) {
118
- goto do_illegal;
119
- }
120
- tcg_gen_qemu_ld_i64(cpu_fpr[rd], t0, ctx->mem_idx, MO_TEUL);
121
- /* RISC-V requires NaN-boxing of narrower width floating point values */
122
- tcg_gen_ori_i64(cpu_fpr[rd], cpu_fpr[rd], 0xffffffff00000000ULL);
123
- break;
124
- case OPC_RISC_FLD:
125
- if (!has_ext(ctx, RVD)) {
126
- goto do_illegal;
127
- }
128
- tcg_gen_qemu_ld_i64(cpu_fpr[rd], t0, ctx->mem_idx, MO_TEQ);
129
- break;
130
- do_illegal:
131
- default:
132
- gen_exception_illegal(ctx);
133
- break;
134
- }
135
- tcg_temp_free(t0);
136
-
137
- mark_fs_dirty(ctx);
138
-}
139
-
140
-static void gen_fp_store(DisasContext *ctx, uint32_t opc, int rs1,
141
- int rs2, target_long imm)
142
-{
143
- TCGv t0;
144
-
145
- if (ctx->mstatus_fs == 0) {
146
- gen_exception_illegal(ctx);
147
- return;
148
- }
149
-
150
- t0 = tcg_temp_new();
151
- gen_get_gpr(t0, rs1);
152
- tcg_gen_addi_tl(t0, t0, imm);
153
-
154
- switch (opc) {
155
- case OPC_RISC_FSW:
156
- if (!has_ext(ctx, RVF)) {
157
- goto do_illegal;
158
- }
159
- tcg_gen_qemu_st_i64(cpu_fpr[rs2], t0, ctx->mem_idx, MO_TEUL);
160
- break;
161
- case OPC_RISC_FSD:
162
- if (!has_ext(ctx, RVD)) {
163
- goto do_illegal;
164
- }
165
- tcg_gen_qemu_st_i64(cpu_fpr[rs2], t0, ctx->mem_idx, MO_TEQ);
166
- break;
167
- do_illegal:
168
- default:
169
- gen_exception_illegal(ctx);
170
- break;
171
- }
172
-
173
- tcg_temp_free(t0);
174
-}
175
-#endif
176
-
177
static void gen_set_rm(DisasContext *ctx, int rm)
178
{
179
TCGv_i32 t0;
180
@@ -XXX,XX +XXX,XX @@ static void gen_set_rm(DisasContext *ctx, int rm)
181
tcg_temp_free_i32(t0);
182
}
183
184
-static void decode_RV32_64C0(DisasContext *ctx, uint16_t opcode)
185
-{
186
- uint8_t funct3 = extract16(opcode, 13, 3);
187
- uint8_t rd_rs2 = GET_C_RS2S(opcode);
188
- uint8_t rs1s = GET_C_RS1S(opcode);
189
-
190
- switch (funct3) {
191
- case 3:
192
-#if defined(TARGET_RISCV64)
193
- /* C.LD(RV64/128) -> ld rd', offset[7:3](rs1')*/
194
- gen_load_c(ctx, OPC_RISC_LD, rd_rs2, rs1s,
195
- GET_C_LD_IMM(opcode));
196
-#else
197
- /* C.FLW (RV32) -> flw rd', offset[6:2](rs1')*/
198
- gen_fp_load(ctx, OPC_RISC_FLW, rd_rs2, rs1s,
199
- GET_C_LW_IMM(opcode));
200
-#endif
201
- break;
202
- case 7:
203
-#if defined(TARGET_RISCV64)
204
- /* C.SD (RV64/128) -> sd rs2', offset[7:3](rs1')*/
205
- gen_store_c(ctx, OPC_RISC_SD, rs1s, rd_rs2,
206
- GET_C_LD_IMM(opcode));
207
-#else
208
- /* C.FSW (RV32) -> fsw rs2', offset[6:2](rs1')*/
209
- gen_fp_store(ctx, OPC_RISC_FSW, rs1s, rd_rs2,
210
- GET_C_LW_IMM(opcode));
211
-#endif
212
- break;
213
- }
214
-}
215
-
216
-static void decode_RV32_64C(DisasContext *ctx, uint16_t opcode)
217
-{
218
- uint8_t op = extract16(opcode, 0, 2);
219
-
220
- switch (op) {
221
- case 0:
222
- decode_RV32_64C0(ctx, opcode);
223
- break;
224
- }
225
-}
226
-
227
static int ex_plus_1(DisasContext *ctx, int nf)
228
{
229
return nf + 1;
230
@@ -XXX,XX +XXX,XX @@ static void decode_opc(CPURISCVState *env, DisasContext *ctx, uint16_t opcode)
231
} else {
232
ctx->pc_succ_insn = ctx->base.pc_next + 2;
233
if (!decode_insn16(ctx, opcode)) {
234
- /* fall back to old decoder */
235
- decode_RV32_64C(ctx, opcode);
236
+ gen_exception_illegal(ctx);
237
}
238
}
239
} else {
240
--
28
--
241
2.30.1
29
2.48.1
242
243
diff view generated by jsdifflib
[PULL 05/16] target/riscv: flush TLB pages if PMP permission has been changed
[PULL 2/3] docs/specs/riscv-iommu: Fixed broken link to external risv iommu document
1
From: Jim Shu <cwshu@andestech.com>
1
From: "hemanshu.khilari.foss" <hemanshu.khilari.foss@gmail.com>
2
2
3
If PMP permission of any address has been changed by updating PMP entry,
3
The links to riscv iommu specification document are incorrect. This patch
4
flush all TLB pages to prevent from getting old permission.
4
updates all the said link to point to correct location.
5
5
6
Signed-off-by: Jim Shu <cwshu@andestech.com>
6
Cc: qemu-stable@nongnu.org
7
Cc: qemu-riscv@nongnu.org
8
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2808
9
Signed-off-by: hemanshu.khilari.foss <hemanshu.khilari.foss@gmail.com>
7
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
10
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
8
Message-id: 1613916082-19528-4-git-send-email-cwshu@andestech.com
11
Message-ID: <20250323063404.13206-1-hemanshu.khilari.foss@gmail.com>
9
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
12
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
10
---
13
---
11
target/riscv/pmp.c | 4 ++++
14
docs/specs/riscv-iommu.rst | 6 +++---
12
1 file changed, 4 insertions(+)
15
1 file changed, 3 insertions(+), 3 deletions(-)
13
16
14
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
17
diff --git a/docs/specs/riscv-iommu.rst b/docs/specs/riscv-iommu.rst
15
index XXXXXXX..XXXXXXX 100644
18
index XXXXXXX..XXXXXXX 100644
16
--- a/target/riscv/pmp.c
19
--- a/docs/specs/riscv-iommu.rst
17
+++ b/target/riscv/pmp.c
20
+++ b/docs/specs/riscv-iommu.rst
18
@@ -XXX,XX +XXX,XX @@
21
@@ -XXX,XX +XXX,XX @@ RISC-V IOMMU support for RISC-V machines
19
#include "qapi/error.h"
22
========================================
20
#include "cpu.h"
23
21
#include "trace.h"
24
QEMU implements a RISC-V IOMMU emulation based on the RISC-V IOMMU spec
22
+#include "exec/exec-all.h"
25
-version 1.0 `iommu1.0`_.
23
26
+version 1.0 `iommu1.0.0`_.
24
static void pmp_write_cfg(CPURISCVState *env, uint32_t addr_index,
27
25
uint8_t val);
28
The emulation includes a PCI reference device (riscv-iommu-pci) and a platform
26
@@ -XXX,XX +XXX,XX @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index,
29
bus device (riscv-iommu-sys) that QEMU RISC-V boards can use. The 'virt'
27
cfg_val = (val >> 8 * i) & 0xff;
30
@@ -XXX,XX +XXX,XX @@ riscv-iommu-pci reference device
28
pmp_write_cfg(env, (reg_index * 4) + i, cfg_val);
31
--------------------------------
29
}
32
30
+
33
This device implements the RISC-V IOMMU emulation as recommended by the section
31
+ /* If PMP permission of any addr has been changed, flush TLB pages. */
34
-"Integrating an IOMMU as a PCIe device" of `iommu1.0`_: a PCI device with base
32
+ tlb_flush(env_cpu(env));
35
+"Integrating an IOMMU as a PCIe device" of `iommu1.0.0`_: a PCI device with base
33
}
36
class 08h, sub-class 06h and programming interface 00h.
34
37
38
As a reference device it doesn't implement anything outside of the specification,
39
@@ -XXX,XX +XXX,XX @@ riscv-iommu options:
40
- "s-stage": enabled
41
- "g-stage": enabled
42
43
-.. _iommu1.0: https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0/riscv-iommu.pdf
44
+.. _iommu1.0.0: https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0.0/riscv-iommu.pdf
45
46
.. _linux-v8: https://lore.kernel.org/linux-riscv/cover.1718388908.git.tjeznach@rivosinc.com/
35
47
36
--
48
--
37
2.30.1
49
2.48.1
38
39
diff view generated by jsdifflib
[PULL 06/16] target/riscv: Adjust privilege level for HLV(X)/HSV instructions
Deleted patch
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
2
1
3
According to the specification the "field SPVP of hstatus controls the
4
privilege level of the access" for the hypervisor virtual-machine load
5
and store instructions HLV, HLVX and HSV.
6
7
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
8
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
9
Message-id: 20210311103005.1400718-1-georg.kotheimer@kernkonzept.com
10
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
11
---
12
target/riscv/cpu_helper.c | 25 ++++++++++++++-----------
13
1 file changed, 14 insertions(+), 11 deletions(-)
14
15
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
16
index XXXXXXX..XXXXXXX 100644
17
--- a/target/riscv/cpu_helper.c
18
+++ b/target/riscv/cpu_helper.c
19
@@ -XXX,XX +XXX,XX @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
20
use_background = true;
21
}
22
23
- if (mode == PRV_M && access_type != MMU_INST_FETCH) {
24
+ /* MPRV does not affect the virtual-machine load/store
25
+ instructions, HLV, HLVX, and HSV. */
26
+ if (riscv_cpu_two_stage_lookup(mmu_idx)) {
27
+ mode = get_field(env->hstatus, HSTATUS_SPVP);
28
+ } else if (mode == PRV_M && access_type != MMU_INST_FETCH) {
29
if (get_field(env->mstatus, MSTATUS_MPRV)) {
30
mode = get_field(env->mstatus, MSTATUS_MPP);
31
}
32
@@ -XXX,XX +XXX,XX @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
33
qemu_log_mask(CPU_LOG_MMU, "%s ad %" VADDR_PRIx " rw %d mmu_idx %d\n",
34
__func__, address, access_type, mmu_idx);
35
36
- if (mode == PRV_M && access_type != MMU_INST_FETCH) {
37
- if (get_field(env->mstatus, MSTATUS_MPRV)) {
38
- mode = get_field(env->mstatus, MSTATUS_MPP);
39
+ /* MPRV does not affect the virtual-machine load/store
40
+ instructions, HLV, HLVX, and HSV. */
41
+ if (riscv_cpu_two_stage_lookup(mmu_idx)) {
42
+ mode = get_field(env->hstatus, HSTATUS_SPVP);
43
+ } else if (mode == PRV_M && access_type != MMU_INST_FETCH &&
44
+ get_field(env->mstatus, MSTATUS_MPRV)) {
45
+ mode = get_field(env->mstatus, MSTATUS_MPP);
46
+ if (riscv_has_ext(env, RVH) && get_field(env->mstatus, MSTATUS_MPV)) {
47
+ two_stage_lookup = true;
48
}
49
}
50
51
- if (riscv_has_ext(env, RVH) && env->priv == PRV_M &&
52
- access_type != MMU_INST_FETCH &&
53
- get_field(env->mstatus, MSTATUS_MPRV) &&
54
- get_field(env->mstatus, MSTATUS_MPV)) {
55
- two_stage_lookup = true;
56
- }
57
-
58
if (riscv_cpu_virt_enabled(env) ||
59
((riscv_cpu_two_stage_lookup(mmu_idx) || two_stage_lookup) &&
60
access_type != MMU_INST_FETCH)) {
61
--
62
2.30.1
63
64
diff view generated by jsdifflib
[PULL 07/16] target/riscv: Make VSTIP and VSEIP read-only in hip
Deleted patch
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
2
1
3
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
4
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
5
Message-id: 20210311094902.1377593-1-georg.kotheimer@kernkonzept.com
6
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
7
---
8
target/riscv/csr.c | 7 ++++---
9
1 file changed, 4 insertions(+), 3 deletions(-)
10
11
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
12
index XXXXXXX..XXXXXXX 100644
13
--- a/target/riscv/csr.c
14
+++ b/target/riscv/csr.c
15
@@ -XXX,XX +XXX,XX @@ static const target_ulong sstatus_v1_10_mask = SSTATUS_SIE | SSTATUS_SPIE |
16
SSTATUS_UIE | SSTATUS_UPIE | SSTATUS_SPP | SSTATUS_FS | SSTATUS_XS |
17
SSTATUS_SUM | SSTATUS_MXR | SSTATUS_SD;
18
static const target_ulong sip_writable_mask = SIP_SSIP | MIP_USIP | MIP_UEIP;
19
-static const target_ulong hip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP;
20
+static const target_ulong hip_writable_mask = MIP_VSSIP;
21
+static const target_ulong hvip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP;
22
static const target_ulong vsip_writable_mask = MIP_VSSIP;
23
24
static const char valid_vm_1_10_32[16] = {
25
@@ -XXX,XX +XXX,XX @@ static int rmw_hvip(CPURISCVState *env, int csrno, target_ulong *ret_value,
26
target_ulong new_value, target_ulong write_mask)
27
{
28
int ret = rmw_mip(env, 0, ret_value, new_value,
29
- write_mask & hip_writable_mask);
30
+ write_mask & hvip_writable_mask);
31
32
- *ret_value &= hip_writable_mask;
33
+ *ret_value &= hvip_writable_mask;
34
35
return ret;
36
}
37
--
38
2.30.1
39
40
diff view generated by jsdifflib
[PULL 08/16] target/riscv: Use background registers also for MSTATUS_MPV
Deleted patch
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
2
1
3
The current condition for the use of background registers only
4
considers the hypervisor load and store instructions,
5
but not accesses from M mode via MSTATUS_MPRV+MPV.
6
7
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
8
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
9
Message-id: 20210311103036.1401073-1-georg.kotheimer@kernkonzept.com
10
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
11
---
12
target/riscv/cpu_helper.c | 2 +-
13
1 file changed, 1 insertion(+), 1 deletion(-)
14
15
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
16
index XXXXXXX..XXXXXXX 100644
17
--- a/target/riscv/cpu_helper.c
18
+++ b/target/riscv/cpu_helper.c
19
@@ -XXX,XX +XXX,XX @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
20
* was called. Background registers will be used if the guest has
21
* forced a two stage translation to be on (in HS or M mode).
22
*/
23
- if (!riscv_cpu_virt_enabled(env) && riscv_cpu_two_stage_lookup(mmu_idx)) {
24
+ if (!riscv_cpu_virt_enabled(env) && two_stage) {
25
use_background = true;
26
}
27
28
--
29
2.30.1
30
31
diff view generated by jsdifflib
[PULL 09/16] hw/riscv: Add fw_cfg support to virt
Deleted patch
1
From: Asherah Connor <ashe@kivikakk.ee>
2
1
3
Provides fw_cfg for the virt machine on riscv. This enables
4
using e.g. ramfb later.
5
6
Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
7
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
8
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
9
Message-id: 20210318235041.17175-2-ashe@kivikakk.ee
10
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
11
---
12
include/hw/riscv/virt.h | 2 ++
13
hw/riscv/virt.c | 30 ++++++++++++++++++++++++++++++
14
hw/riscv/Kconfig | 1 +
15
3 files changed, 33 insertions(+)
16
17
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
18
index XXXXXXX..XXXXXXX 100644
19
--- a/include/hw/riscv/virt.h
20
+++ b/include/hw/riscv/virt.h
21
@@ -XXX,XX +XXX,XX @@ struct RISCVVirtState {
22
RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
23
DeviceState *plic[VIRT_SOCKETS_MAX];
24
PFlashCFI01 *flash[2];
25
+ FWCfgState *fw_cfg;
26
27
int fdt_size;
28
};
29
@@ -XXX,XX +XXX,XX @@ enum {
30
VIRT_PLIC,
31
VIRT_UART0,
32
VIRT_VIRTIO,
33
+ VIRT_FW_CFG,
34
VIRT_FLASH,
35
VIRT_DRAM,
36
VIRT_PCIE_MMIO,
37
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
38
index XXXXXXX..XXXXXXX 100644
39
--- a/hw/riscv/virt.c
40
+++ b/hw/riscv/virt.c
41
@@ -XXX,XX +XXX,XX @@ static const MemMapEntry virt_memmap[] = {
42
[VIRT_PLIC] = { 0xc000000, VIRT_PLIC_SIZE(VIRT_CPUS_MAX * 2) },
43
[VIRT_UART0] = { 0x10000000, 0x100 },
44
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
45
+ [VIRT_FW_CFG] = { 0x10100000, 0x18 },
46
[VIRT_FLASH] = { 0x20000000, 0x4000000 },
47
[VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 },
48
[VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 },
49
@@ -XXX,XX +XXX,XX @@ static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
50
return dev;
51
}
52
53
+static FWCfgState *create_fw_cfg(const MachineState *mc)
54
+{
55
+ hwaddr base = virt_memmap[VIRT_FW_CFG].base;
56
+ hwaddr size = virt_memmap[VIRT_FW_CFG].size;
57
+ FWCfgState *fw_cfg;
58
+ char *nodename;
59
+
60
+ fw_cfg = fw_cfg_init_mem_wide(base + 8, base, 8, base + 16,
61
+ &address_space_memory);
62
+ fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)mc->smp.cpus);
63
+
64
+ nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
65
+ qemu_fdt_add_subnode(mc->fdt, nodename);
66
+ qemu_fdt_setprop_string(mc->fdt, nodename,
67
+ "compatible", "qemu,fw-cfg-mmio");
68
+ qemu_fdt_setprop_sized_cells(mc->fdt, nodename, "reg",
69
+ 2, base, 2, size);
70
+ qemu_fdt_setprop(mc->fdt, nodename, "dma-coherent", NULL, 0);
71
+ g_free(nodename);
72
+ return fw_cfg;
73
+}
74
+
75
static void virt_machine_init(MachineState *machine)
76
{
77
const MemMapEntry *memmap = virt_memmap;
78
@@ -XXX,XX +XXX,XX @@ static void virt_machine_init(MachineState *machine)
79
start_addr = virt_memmap[VIRT_FLASH].base;
80
}
81
82
+ /*
83
+ * Init fw_cfg. Must be done before riscv_load_fdt, otherwise the device
84
+ * tree cannot be altered and we get FDT_ERR_NOSPACE.
85
+ */
86
+ s->fw_cfg = create_fw_cfg(machine);
87
+ rom_set_fw(s->fw_cfg);
88
+
89
/* Compute the fdt load address in dram */
90
fdt_load_addr = riscv_load_fdt(memmap[VIRT_DRAM].base,
91
machine->ram_size, machine->fdt);
92
diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
93
index XXXXXXX..XXXXXXX 100644
94
--- a/hw/riscv/Kconfig
95
+++ b/hw/riscv/Kconfig
96
@@ -XXX,XX +XXX,XX @@ config RISCV_VIRT
97
select SIFIVE_PLIC
98
select SIFIVE_TEST
99
select VIRTIO_MMIO
100
+ select FW_CFG_DMA
101
102
config SIFIVE_E
103
bool
104
--
105
2.30.1
106
107
diff view generated by jsdifflib
[PULL 10/16] hw/riscv: allow ramfb on virt
Deleted patch
1
From: Asherah Connor <ashe@kivikakk.ee>
2
1
3
Allow ramfb on virt. This lets `-device ramfb' work.
4
5
Signed-off-by: Asherah Connor <ashe@kivikakk.ee>
6
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
7
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
8
Message-id: 20210318235041.17175-3-ashe@kivikakk.ee
9
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
10
---
11
hw/riscv/virt.c | 3 +++
12
1 file changed, 3 insertions(+)
13
14
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
15
index XXXXXXX..XXXXXXX 100644
16
--- a/hw/riscv/virt.c
17
+++ b/hw/riscv/virt.c
18
@@ -XXX,XX +XXX,XX @@
19
#include "sysemu/sysemu.h"
20
#include "hw/pci/pci.h"
21
#include "hw/pci-host/gpex.h"
22
+#include "hw/display/ramfb.h"
23
24
static const MemMapEntry virt_memmap[] = {
25
[VIRT_DEBUG] = { 0x0, 0x100 },
26
@@ -XXX,XX +XXX,XX @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
27
mc->cpu_index_to_instance_props = riscv_numa_cpu_index_to_props;
28
mc->get_default_cpu_node_id = riscv_numa_get_default_cpu_node_id;
29
mc->numa_mem_supported = true;
30
+
31
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
32
}
33
34
static const TypeInfo virt_machine_typeinfo = {
35
--
36
2.30.1
37
38
diff view generated by jsdifflib
[PULL 11/16] target/riscv: Fix read and write accesses to vsip and vsie
[PULL 3/3] Revert "target/riscv/kvm: add missing KVM CSRs"
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
1
From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
2
2
3
The previous implementation was broken in many ways:
3
This commit breaks KVM boot on older kernels, like reported in [1], due
4
- Used mideleg instead of hideleg to mask accesses
4
to senvcfg not being available in them.
5
- Used MIP_VSSIP instead of VS_MODE_INTERRUPTS to mask writes to vsie
6
- Did not shift between S bits and VS bits (VSEIP <-> SEIP, ...)
7
5
8
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
6
There's also another problem related to scounteren. Using a recent
9
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
7
enough guest buildroot, 'ping' will be build with rdtime support. In
10
Message-id: 20210311094738.1376795-1-georg.kotheimer@kernkonzept.com
8
this case, doing a ping in a KVM guest while exposing scounteren will
9
result in an error. The root cause relates to how KVM handles
10
scounteren, but QEMU can work around it by initializing scounteren with
11
the host value during init().
12
13
Fixing these issues in a non-rushed-bandaid manner results in an amount
14
of design changes that I don't feel comfortable pushing during code
15
freeze, so for 10.0 we'll remove the CSRs and re-introduce them in 10.1
16
with the adequate support.
17
18
This reverts commit 4db19d5b21e058e6eb3474b6be470d1184afaa9e.
19
20
[1] https://lore.kernel.org/qemu-riscv/CABJz62OfUDHYkQ0T3rGHStQprf1c7_E0qBLbLKhfv=+jb0SYAw@mail.gmail.com/
21
22
Reported-by: Andrea Bolognani <abologna@redhat.com>
23
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
24
Message-ID: <20250327152052.707657-1-dbarboza@ventanamicro.com>
11
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
25
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
12
---
26
---
13
target/riscv/csr.c | 68 +++++++++++++++++++++++-----------------------
27
target/riscv/kvm/kvm-cpu.c | 6 ------
14
1 file changed, 34 insertions(+), 34 deletions(-)
28
1 file changed, 6 deletions(-)
15
29
16
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
30
diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
17
index XXXXXXX..XXXXXXX 100644
31
index XXXXXXX..XXXXXXX 100644
18
--- a/target/riscv/csr.c
32
--- a/target/riscv/kvm/kvm-cpu.c
19
+++ b/target/riscv/csr.c
33
+++ b/target/riscv/kvm/kvm-cpu.c
20
@@ -XXX,XX +XXX,XX @@ static int write_sstatus(CPURISCVState *env, int csrno, target_ulong val)
34
@@ -XXX,XX +XXX,XX @@ static void kvm_riscv_reset_regs_csr(CPURISCVState *env)
21
return write_mstatus(env, CSR_MSTATUS, newval);
35
env->stval = 0;
36
env->mip = 0;
37
env->satp = 0;
38
- env->scounteren = 0;
39
- env->senvcfg = 0;
22
}
40
}
23
41
24
+static int read_vsie(CPURISCVState *env, int csrno, target_ulong *val)
42
static int kvm_riscv_get_regs_csr(CPUState *cs)
25
+{
43
@@ -XXX,XX +XXX,XX @@ static int kvm_riscv_get_regs_csr(CPUState *cs)
26
+ /* Shift the VS bits to their S bit location in vsie */
44
KVM_RISCV_GET_CSR(cs, env, stval, env->stval);
27
+ *val = (env->mie & env->hideleg & VS_MODE_INTERRUPTS) >> 1;
45
KVM_RISCV_GET_CSR(cs, env, sip, env->mip);
28
+ return 0;
46
KVM_RISCV_GET_CSR(cs, env, satp, env->satp);
29
+}
47
- KVM_RISCV_GET_CSR(cs, env, scounteren, env->scounteren);
30
+
48
- KVM_RISCV_GET_CSR(cs, env, senvcfg, env->senvcfg);
31
static int read_sie(CPURISCVState *env, int csrno, target_ulong *val)
49
32
{
33
if (riscv_cpu_virt_enabled(env)) {
34
- /* Tell the guest the VS bits, shifted to the S bit locations */
35
- *val = (env->mie & env->mideleg & VS_MODE_INTERRUPTS) >> 1;
36
+ read_vsie(env, CSR_VSIE, val);
37
} else {
38
*val = env->mie & env->mideleg;
39
}
40
return 0;
50
return 0;
41
}
51
}
42
52
@@ -XXX,XX +XXX,XX @@ static int kvm_riscv_put_regs_csr(CPUState *cs)
43
-static int write_sie(CPURISCVState *env, int csrno, target_ulong val)
53
KVM_RISCV_SET_CSR(cs, env, stval, env->stval);
44
+static int write_vsie(CPURISCVState *env, int csrno, target_ulong val)
54
KVM_RISCV_SET_CSR(cs, env, sip, env->mip);
45
{
55
KVM_RISCV_SET_CSR(cs, env, satp, env->satp);
46
- target_ulong newval;
56
- KVM_RISCV_SET_CSR(cs, env, scounteren, env->scounteren);
47
+ /* Shift the S bits to their VS bit location in mie */
57
- KVM_RISCV_SET_CSR(cs, env, senvcfg, env->senvcfg);
48
+ target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) |
58
49
+ ((val << 1) & env->hideleg & VS_MODE_INTERRUPTS);
50
+ return write_mie(env, CSR_MIE, newval);
51
+}
52
53
+static int write_sie(CPURISCVState *env, int csrno, target_ulong val)
54
+{
55
if (riscv_cpu_virt_enabled(env)) {
56
- /* Shift the guests S bits to VS */
57
- newval = (env->mie & ~VS_MODE_INTERRUPTS) |
58
- ((val << 1) & VS_MODE_INTERRUPTS);
59
+ write_vsie(env, CSR_VSIE, val);
60
} else {
61
- newval = (env->mie & ~S_MODE_INTERRUPTS) | (val & S_MODE_INTERRUPTS);
62
+ target_ulong newval = (env->mie & ~S_MODE_INTERRUPTS) |
63
+ (val & S_MODE_INTERRUPTS);
64
+ write_mie(env, CSR_MIE, newval);
65
}
66
67
- return write_mie(env, CSR_MIE, newval);
68
+ return 0;
69
}
70
71
static int read_stvec(CPURISCVState *env, int csrno, target_ulong *val)
72
@@ -XXX,XX +XXX,XX @@ static int write_sbadaddr(CPURISCVState *env, int csrno, target_ulong val)
73
return 0;
59
return 0;
74
}
60
}
75
76
+static int rmw_vsip(CPURISCVState *env, int csrno, target_ulong *ret_value,
77
+ target_ulong new_value, target_ulong write_mask)
78
+{
79
+ /* Shift the S bits to their VS bit location in mip */
80
+ int ret = rmw_mip(env, 0, ret_value, new_value << 1,
81
+ (write_mask << 1) & vsip_writable_mask & env->hideleg);
82
+ *ret_value &= VS_MODE_INTERRUPTS;
83
+ /* Shift the VS bits to their S bit location in vsip */
84
+ *ret_value >>= 1;
85
+ return ret;
86
+}
87
+
88
static int rmw_sip(CPURISCVState *env, int csrno, target_ulong *ret_value,
89
target_ulong new_value, target_ulong write_mask)
90
{
91
int ret;
92
93
if (riscv_cpu_virt_enabled(env)) {
94
- /* Shift the new values to line up with the VS bits */
95
- ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value << 1,
96
- (write_mask & sip_writable_mask) << 1 & env->mideleg);
97
- ret &= vsip_writable_mask;
98
- ret >>= 1;
99
+ ret = rmw_vsip(env, CSR_VSIP, ret_value, new_value, write_mask);
100
} else {
101
ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value,
102
write_mask & env->mideleg & sip_writable_mask);
103
@@ -XXX,XX +XXX,XX @@ static int write_vsstatus(CPURISCVState *env, int csrno, target_ulong val)
104
return 0;
105
}
106
107
-static int rmw_vsip(CPURISCVState *env, int csrno, target_ulong *ret_value,
108
- target_ulong new_value, target_ulong write_mask)
109
-{
110
- int ret = rmw_mip(env, 0, ret_value, new_value,
111
- write_mask & env->mideleg & vsip_writable_mask);
112
- return ret;
113
-}
114
-
115
-static int read_vsie(CPURISCVState *env, int csrno, target_ulong *val)
116
-{
117
- *val = env->mie & env->mideleg & VS_MODE_INTERRUPTS;
118
- return 0;
119
-}
120
-
121
-static int write_vsie(CPURISCVState *env, int csrno, target_ulong val)
122
-{
123
- target_ulong newval = (env->mie & ~env->mideleg) | (val & env->mideleg & MIP_VSSIP);
124
- return write_mie(env, CSR_MIE, newval);
125
-}
126
-
127
static int read_vstvec(CPURISCVState *env, int csrno, target_ulong *val)
128
{
129
*val = env->vstvec;
130
--
61
--
131
2.30.1
62
2.48.1
132
133
diff view generated by jsdifflib
[PULL 12/16] target/riscv: Add proper two-stage lookup exception detection
Deleted patch
1
From: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
2
1
3
The current two-stage lookup detection in riscv_cpu_do_interrupt falls
4
short of its purpose, as all it checks is whether two-stage address
5
translation either via the hypervisor-load store instructions or the
6
MPRV feature would be allowed.
7
8
What we really need instead is whether two-stage address translation was
9
active when the exception was raised. However, in riscv_cpu_do_interrupt
10
we do not have the information to reliably detect this. Therefore, when
11
we raise a memory fault exception we have to record whether two-stage
12
address translation is active.
13
14
Signed-off-by: Georg Kotheimer <georg.kotheimer@kernkonzept.com>
15
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
16
Message-id: 20210319141459.1196741-1-georg.kotheimer@kernkonzept.com
17
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
18
---
19
target/riscv/cpu.h | 4 ++++
20
target/riscv/cpu.c | 1 +
21
target/riscv/cpu_helper.c | 21 ++++++++-------------
22
3 files changed, 13 insertions(+), 13 deletions(-)
23
24
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
25
index XXXXXXX..XXXXXXX 100644
26
--- a/target/riscv/cpu.h
27
+++ b/target/riscv/cpu.h
28
@@ -XXX,XX +XXX,XX @@ struct CPURISCVState {
29
target_ulong satp_hs;
30
uint64_t mstatus_hs;
31
32
+ /* Signals whether the current exception occurred with two-stage address
33
+ translation active. */
34
+ bool two_stage_lookup;
35
+
36
target_ulong scounteren;
37
target_ulong mcounteren;
38
39
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
40
index XXXXXXX..XXXXXXX 100644
41
--- a/target/riscv/cpu.c
42
+++ b/target/riscv/cpu.c
43
@@ -XXX,XX +XXX,XX @@ static void riscv_cpu_reset(DeviceState *dev)
44
env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
45
env->mcause = 0;
46
env->pc = env->resetvec;
47
+ env->two_stage_lookup = false;
48
#endif
49
cs->exception_index = EXCP_NONE;
50
env->load_res = -1;
51
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
52
index XXXXXXX..XXXXXXX 100644
53
--- a/target/riscv/cpu_helper.c
54
+++ b/target/riscv/cpu_helper.c
55
@@ -XXX,XX +XXX,XX @@ static void raise_mmu_exception(CPURISCVState *env, target_ulong address,
56
g_assert_not_reached();
57
}
58
env->badaddr = address;
59
+ env->two_stage_lookup = two_stage;
60
}
61
62
hwaddr riscv_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
63
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
64
}
65
66
env->badaddr = addr;
67
+ env->two_stage_lookup = riscv_cpu_virt_enabled(env) ||
68
+ riscv_cpu_two_stage_lookup(mmu_idx);
69
riscv_raise_exception(&cpu->env, cs->exception_index, retaddr);
70
}
71
72
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
73
g_assert_not_reached();
74
}
75
env->badaddr = addr;
76
+ env->two_stage_lookup = riscv_cpu_virt_enabled(env) ||
77
+ riscv_cpu_two_stage_lookup(mmu_idx);
78
riscv_raise_exception(env, cs->exception_index, retaddr);
79
}
80
#endif /* !CONFIG_USER_ONLY */
81
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_do_interrupt(CPUState *cs)
82
/* handle the trap in S-mode */
83
if (riscv_has_ext(env, RVH)) {
84
target_ulong hdeleg = async ? env->hideleg : env->hedeleg;
85
- bool two_stage_lookup = false;
86
87
- if (env->priv == PRV_M ||
88
- (env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) ||
89
- (env->priv == PRV_U && !riscv_cpu_virt_enabled(env) &&
90
- get_field(env->hstatus, HSTATUS_HU))) {
91
- two_stage_lookup = true;
92
- }
93
-
94
- if ((riscv_cpu_virt_enabled(env) || two_stage_lookup) && write_tval) {
95
+ if (env->two_stage_lookup && write_tval) {
96
/*
97
* If we are writing a guest virtual address to stval, set
98
* this to 1. If we are trapping to VS we will set this to 0
99
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_do_interrupt(CPUState *cs)
100
riscv_cpu_set_force_hs_excep(env, 0);
101
} else {
102
/* Trap into HS mode */
103
- if (!two_stage_lookup) {
104
- env->hstatus = set_field(env->hstatus, HSTATUS_SPV,
105
- riscv_cpu_virt_enabled(env));
106
- }
107
+ env->hstatus = set_field(env->hstatus, HSTATUS_SPV, false);
108
htval = env->guest_phys_fault_addr;
109
}
110
}
111
@@ -XXX,XX +XXX,XX @@ void riscv_cpu_do_interrupt(CPUState *cs)
112
* RISC-V ISA Specification.
113
*/
114
115
+ env->two_stage_lookup = false;
116
#endif
117
cs->exception_index = EXCP_NONE; /* mark handled to qemu */
118
}
119
--
120
2.30.1
121
122
diff view generated by jsdifflib
[PULL 13/16] hw/block: m25p80: Support fast read for SST flashes
Deleted patch
1
From: Bin Meng <bin.meng@windriver.com>
2
1
3
Per SST25VF016B datasheet [1], SST flash requires a dummy byte after
4
the address bytes. Note only SPI mode is supported by SST flashes.
5
6
[1] http://ww1.microchip.com/downloads/en/devicedoc/s71271_04.pdf
7
8
Signed-off-by: Bin Meng <bin.meng@windriver.com>
9
Acked-by: Alistair Francis <alistair.francis@wdc.com>
10
Message-id: 20210306060152.7250-1-bmeng.cn@gmail.com
11
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
12
---
13
hw/block/m25p80.c | 3 +++
14
1 file changed, 3 insertions(+)
15
16
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
17
index XXXXXXX..XXXXXXX 100644
18
--- a/hw/block/m25p80.c
19
+++ b/hw/block/m25p80.c
20
@@ -XXX,XX +XXX,XX @@ static void decode_fast_read_cmd(Flash *s)
21
s->needed_bytes = get_addr_length(s);
22
switch (get_man(s)) {
23
/* Dummy cycles - modeled with bytes writes instead of bits */
24
+ case MAN_SST:
25
+ s->needed_bytes += 1;
26
+ break;
27
case MAN_WINBOND:
28
s->needed_bytes += 8;
29
break;
30
--
31
2.30.1
32
33
diff view generated by jsdifflib
[PULL 14/16] hw/riscv: microchip_pfsoc: Map EMMC/SD mux register
Deleted patch
1
From: Bin Meng <bin.meng@windriver.com>
2
1
3
Since HSS commit c20a89f8dcac, the Icicle Kit reference design has
4
been updated to use a register mapped at 0x4f000000 instead of a
5
GPIO to control whether eMMC or SD card is to be used. With this
6
support the same HSS image can be used for both eMMC and SD card
7
boot flow, while previously two different board configurations were
8
used. This is undocumented but one can take a look at the HSS code
9
HSS_MMCInit() in services/mmc/mmc_api.c.
10
11
With this commit, HSS image built from 2020.12 release boots again.
12
13
Signed-off-by: Bin Meng <bin.meng@windriver.com>
14
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
15
Message-id: 20210322075248.136255-1-bmeng.cn@gmail.com
16
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
17
---
18
include/hw/riscv/microchip_pfsoc.h | 1 +
19
hw/riscv/microchip_pfsoc.c | 6 ++++++
20
2 files changed, 7 insertions(+)
21
22
diff --git a/include/hw/riscv/microchip_pfsoc.h b/include/hw/riscv/microchip_pfsoc.h
23
index XXXXXXX..XXXXXXX 100644
24
--- a/include/hw/riscv/microchip_pfsoc.h
25
+++ b/include/hw/riscv/microchip_pfsoc.h
26
@@ -XXX,XX +XXX,XX @@ enum {
27
MICROCHIP_PFSOC_ENVM_DATA,
28
MICROCHIP_PFSOC_QSPI_XIP,
29
MICROCHIP_PFSOC_IOSCB,
30
+ MICROCHIP_PFSOC_EMMC_SD_MUX,
31
MICROCHIP_PFSOC_DRAM_LO,
32
MICROCHIP_PFSOC_DRAM_LO_ALIAS,
33
MICROCHIP_PFSOC_DRAM_HI,
34
diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
35
index XXXXXXX..XXXXXXX 100644
36
--- a/hw/riscv/microchip_pfsoc.c
37
+++ b/hw/riscv/microchip_pfsoc.c
38
@@ -XXX,XX +XXX,XX @@ static const MemMapEntry microchip_pfsoc_memmap[] = {
39
[MICROCHIP_PFSOC_ENVM_DATA] = { 0x20220000, 0x20000 },
40
[MICROCHIP_PFSOC_QSPI_XIP] = { 0x21000000, 0x1000000 },
41
[MICROCHIP_PFSOC_IOSCB] = { 0x30000000, 0x10000000 },
42
+ [MICROCHIP_PFSOC_EMMC_SD_MUX] = { 0x4f000000, 0x4 },
43
[MICROCHIP_PFSOC_DRAM_LO] = { 0x80000000, 0x40000000 },
44
[MICROCHIP_PFSOC_DRAM_LO_ALIAS] = { 0xc0000000, 0x40000000 },
45
[MICROCHIP_PFSOC_DRAM_HI] = { 0x1000000000, 0x0 },
46
@@ -XXX,XX +XXX,XX @@ static void microchip_pfsoc_soc_realize(DeviceState *dev, Error **errp)
47
sysbus_mmio_map(SYS_BUS_DEVICE(&s->ioscb), 0,
48
memmap[MICROCHIP_PFSOC_IOSCB].base);
49
50
+ /* eMMC/SD mux */
51
+ create_unimplemented_device("microchip.pfsoc.emmc_sd_mux",
52
+ memmap[MICROCHIP_PFSOC_EMMC_SD_MUX].base,
53
+ memmap[MICROCHIP_PFSOC_EMMC_SD_MUX].size);
54
+
55
/* QSPI Flash */
56
memory_region_init_rom(qspi_xip_mem, OBJECT(dev),
57
"microchip.pfsoc.qspi_xip",
58
--
59
2.30.1
60
61
diff view generated by jsdifflib
[PULL 15/16] docs/system: riscv: Add documentation for 'microchip-icicle-kit' machine
Deleted patch
1
From: Bin Meng <bin.meng@windriver.com>
2
1
3
This adds the documentation to describe what is supported for the
4
'microchip-icicle-kit' machine, and how to boot the machine in QEMU.
5
6
Signed-off-by: Bin Meng <bin.meng@windriver.com>
7
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
8
Message-id: 20210322075248.136255-2-bmeng.cn@gmail.com
9
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
10
---
11
docs/system/riscv/microchip-icicle-kit.rst | 89 ++++++++++++++++++++++
12
docs/system/target-riscv.rst | 1 +
13
2 files changed, 90 insertions(+)
14
create mode 100644 docs/system/riscv/microchip-icicle-kit.rst
15
16
diff --git a/docs/system/riscv/microchip-icicle-kit.rst b/docs/system/riscv/microchip-icicle-kit.rst
17
new file mode 100644
18
index XXXXXXX..XXXXXXX
19
--- /dev/null
20
+++ b/docs/system/riscv/microchip-icicle-kit.rst
21
@@ -XXX,XX +XXX,XX @@
22
+Microchip PolarFire SoC Icicle Kit (``microchip-icicle-kit``)
23
+=============================================================
24
+
25
+Microchip PolarFire SoC Icicle Kit integrates a PolarFire SoC, with one
26
+SiFive's E51 plus four U54 cores and many on-chip peripherals and an FPGA.
27
+
28
+For more details about Microchip PolarFire SoC, please see:
29
+https://www.microsemi.com/product-directory/soc-fpgas/5498-polarfire-soc-fpga
30
+
31
+The Icicle Kit board information can be found here:
32
+https://www.microsemi.com/existing-parts/parts/152514
33
+
34
+Supported devices
35
+-----------------
36
+
37
+The ``microchip-icicle-kit`` machine supports the following devices:
38
+
39
+ * 1 E51 core
40
+ * 4 U54 cores
41
+ * Core Level Interruptor (CLINT)
42
+ * Platform-Level Interrupt Controller (PLIC)
43
+ * L2 Loosely Integrated Memory (L2-LIM)
44
+ * DDR memory controller
45
+ * 5 MMUARTs
46
+ * 1 DMA controller
47
+ * 2 GEM Ethernet controllers
48
+ * 1 SDHC storage controller
49
+
50
+Boot options
51
+------------
52
+
53
+The ``microchip-icicle-kit`` machine can start using the standard -bios
54
+functionality for loading its BIOS image, aka Hart Software Services (HSS_).
55
+HSS loads the second stage bootloader U-Boot from an SD card. It does not
56
+support direct kernel loading via the -kernel option. One has to load kernel
57
+from U-Boot.
58
+
59
+The memory is set to 1537 MiB by default which is the minimum required high
60
+memory size by HSS. A sanity check on ram size is performed in the machine
61
+init routine to prompt user to increase the RAM size to > 1537 MiB when less
62
+than 1537 MiB ram is detected.
63
+
64
+Boot the machine
65
+----------------
66
+
67
+HSS 2020.12 release is tested at the time of writing. To build an HSS image
68
+that can be booted by the ``microchip-icicle-kit`` machine, type the following
69
+in the HSS source tree:
70
+
71
+.. code-block:: bash
72
+
73
+ $ export CROSS_COMPILE=riscv64-linux-
74
+ $ cp boards/mpfs-icicle-kit-es/def_config .config
75
+ $ make BOARD=mpfs-icicle-kit-es
76
+
77
+Download the official SD card image released by Microchip and prepare it for
78
+QEMU usage:
79
+
80
+.. code-block:: bash
81
+
82
+ $ wget ftp://ftpsoc.microsemi.com/outgoing/core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz
83
+ $ gunzip core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz
84
+ $ qemu-img resize core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic 4G
85
+
86
+Then we can boot the machine by:
87
+
88
+.. code-block:: bash
89
+
90
+ $ qemu-system-riscv64 -M microchip-icicle-kit -smp 5 \
91
+ -bios path/to/hss.bin -sd path/to/sdcard.img \
92
+ -nic user,model=cadence_gem \
93
+ -nic tap,ifname=tap,model=cadence_gem,script=no \
94
+ -display none -serial stdio \
95
+ -chardev socket,id=serial1,path=serial1.sock,server=on,wait=on \
96
+ -serial chardev:serial1
97
+
98
+With above command line, current terminal session will be used for the first
99
+serial port. Open another terminal window, and use `minicom` to connect the
100
+second serial port.
101
+
102
+.. code-block:: bash
103
+
104
+ $ minicom -D unix\#serial1.sock
105
+
106
+HSS output is on the first serial port (stdio) and U-Boot outputs on the
107
+second serial port. U-Boot will automatically load the Linux kernel from
108
+the SD card image.
109
+
110
+.. _HSS: https://github.com/polarfire-soc/hart-software-services
111
diff --git a/docs/system/target-riscv.rst b/docs/system/target-riscv.rst
112
index XXXXXXX..XXXXXXX 100644
113
--- a/docs/system/target-riscv.rst
114
+++ b/docs/system/target-riscv.rst
115
@@ -XXX,XX +XXX,XX @@ undocumented; you can get a complete list by running
116
.. toctree::
117
:maxdepth: 1
118
119
+ riscv/microchip-icicle-kit
120
riscv/sifive_u
121
122
RISC-V CPU features
123
--
124
2.30.1
125
126
diff view generated by jsdifflib

Patchew 2.1-devel-b67e4c2

© 2016 - 2025 Red Hat, Inc.