4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
5 * Copyright (c) 2017-2018 SiFive, Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2 or later, as published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qemu/qemu-print.h"
22 #include "qemu/ctype.h"
25 #include "internals.h"
26 #include "exec/exec-all.h"
27 #include "qapi/error.h"
28 #include "qemu/error-report.h"
29 #include "hw/qdev-properties.h"
30 #include "migration/vmstate.h"
31 #include "fpu/softfloat-helpers.h"
32 #include "sysemu/kvm.h"
33 #include "kvm_riscv.h"
35 /* RISC-V CPU definitions */
37 #define RISCV_CPU_MARCHID ((QEMU_VERSION_MAJOR << 16) | \
38 (QEMU_VERSION_MINOR << 8) | \
40 #define RISCV_CPU_MIMPID RISCV_CPU_MARCHID
42 static const char riscv_single_letter_exts
[] = "IEMAFDQCPVH";
49 const char * const riscv_int_regnames
[] = {
50 "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1",
51 "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3",
52 "x14/a4", "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3", "x20/s4",
53 "x21/s5", "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11",
54 "x28/t3", "x29/t4", "x30/t5", "x31/t6"
57 const char * const riscv_int_regnamesh
[] = {
58 "x0h/zeroh", "x1h/rah", "x2h/sph", "x3h/gph", "x4h/tph", "x5h/t0h",
59 "x6h/t1h", "x7h/t2h", "x8h/s0h", "x9h/s1h", "x10h/a0h", "x11h/a1h",
60 "x12h/a2h", "x13h/a3h", "x14h/a4h", "x15h/a5h", "x16h/a6h", "x17h/a7h",
61 "x18h/s2h", "x19h/s3h", "x20h/s4h", "x21h/s5h", "x22h/s6h", "x23h/s7h",
62 "x24h/s8h", "x25h/s9h", "x26h/s10h", "x27h/s11h", "x28h/t3h", "x29h/t4h",
63 "x30h/t5h", "x31h/t6h"
66 const char * const riscv_fpr_regnames
[] = {
67 "f0/ft0", "f1/ft1", "f2/ft2", "f3/ft3", "f4/ft4", "f5/ft5",
68 "f6/ft6", "f7/ft7", "f8/fs0", "f9/fs1", "f10/fa0", "f11/fa1",
69 "f12/fa2", "f13/fa3", "f14/fa4", "f15/fa5", "f16/fa6", "f17/fa7",
70 "f18/fs2", "f19/fs3", "f20/fs4", "f21/fs5", "f22/fs6", "f23/fs7",
71 "f24/fs8", "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9",
72 "f30/ft10", "f31/ft11"
75 static const char * const riscv_excp_names
[] = {
78 "illegal_instruction",
96 "guest_exec_page_fault",
97 "guest_load_page_fault",
99 "guest_store_page_fault",
102 static const char * const riscv_intr_names
[] = {
121 const char *riscv_cpu_get_trap_name(target_ulong cause
, bool async
)
124 return (cause
< ARRAY_SIZE(riscv_intr_names
)) ?
125 riscv_intr_names
[cause
] : "(unknown)";
127 return (cause
< ARRAY_SIZE(riscv_excp_names
)) ?
128 riscv_excp_names
[cause
] : "(unknown)";
132 static void set_misa(CPURISCVState
*env
, RISCVMXL mxl
, uint32_t ext
)
134 env
->misa_mxl_max
= env
->misa_mxl
= mxl
;
135 env
->misa_ext_mask
= env
->misa_ext
= ext
;
138 static void set_priv_version(CPURISCVState
*env
, int priv_ver
)
140 env
->priv_ver
= priv_ver
;
143 static void set_vext_version(CPURISCVState
*env
, int vext_ver
)
145 env
->vext_ver
= vext_ver
;
148 static void set_resetvec(CPURISCVState
*env
, target_ulong resetvec
)
150 #ifndef CONFIG_USER_ONLY
151 env
->resetvec
= resetvec
;
155 static void riscv_any_cpu_init(Object
*obj
)
157 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
158 #if defined(TARGET_RISCV32)
159 set_misa(env
, MXL_RV32
, RVI
| RVM
| RVA
| RVF
| RVD
| RVC
| RVU
);
160 #elif defined(TARGET_RISCV64)
161 set_misa(env
, MXL_RV64
, RVI
| RVM
| RVA
| RVF
| RVD
| RVC
| RVU
);
163 set_priv_version(env
, PRIV_VERSION_1_12_0
);
166 #if defined(TARGET_RISCV64)
167 static void rv64_base_cpu_init(Object
*obj
)
169 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
170 /* We set this in the realise function */
171 set_misa(env
, MXL_RV64
, 0);
174 static void rv64_sifive_u_cpu_init(Object
*obj
)
176 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
177 set_misa(env
, MXL_RV64
, RVI
| RVM
| RVA
| RVF
| RVD
| RVC
| RVS
| RVU
);
178 set_priv_version(env
, PRIV_VERSION_1_10_0
);
181 static void rv64_sifive_e_cpu_init(Object
*obj
)
183 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
184 set_misa(env
, MXL_RV64
, RVI
| RVM
| RVA
| RVC
| RVU
);
185 set_priv_version(env
, PRIV_VERSION_1_10_0
);
186 qdev_prop_set_bit(DEVICE(obj
), "mmu", false);
189 static void rv128_base_cpu_init(Object
*obj
)
191 if (qemu_tcg_mttcg_enabled()) {
192 /* Missing 128-bit aligned atomics */
193 error_report("128-bit RISC-V currently does not work with Multi "
194 "Threaded TCG. Please use: -accel tcg,thread=single");
197 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
198 /* We set this in the realise function */
199 set_misa(env
, MXL_RV128
, 0);
202 static void rv32_base_cpu_init(Object
*obj
)
204 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
205 /* We set this in the realise function */
206 set_misa(env
, MXL_RV32
, 0);
209 static void rv32_sifive_u_cpu_init(Object
*obj
)
211 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
212 set_misa(env
, MXL_RV32
, RVI
| RVM
| RVA
| RVF
| RVD
| RVC
| RVS
| RVU
);
213 set_priv_version(env
, PRIV_VERSION_1_10_0
);
216 static void rv32_sifive_e_cpu_init(Object
*obj
)
218 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
219 set_misa(env
, MXL_RV32
, RVI
| RVM
| RVA
| RVC
| RVU
);
220 set_priv_version(env
, PRIV_VERSION_1_10_0
);
221 qdev_prop_set_bit(DEVICE(obj
), "mmu", false);
224 static void rv32_ibex_cpu_init(Object
*obj
)
226 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
227 set_misa(env
, MXL_RV32
, RVI
| RVM
| RVC
| RVU
);
228 set_priv_version(env
, PRIV_VERSION_1_10_0
);
229 qdev_prop_set_bit(DEVICE(obj
), "mmu", false);
230 qdev_prop_set_bit(DEVICE(obj
), "x-epmp", true);
233 static void rv32_imafcu_nommu_cpu_init(Object
*obj
)
235 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
236 set_misa(env
, MXL_RV32
, RVI
| RVM
| RVA
| RVF
| RVC
| RVU
);
237 set_priv_version(env
, PRIV_VERSION_1_10_0
);
238 set_resetvec(env
, DEFAULT_RSTVEC
);
239 qdev_prop_set_bit(DEVICE(obj
), "mmu", false);
243 #if defined(CONFIG_KVM)
244 static void riscv_host_cpu_init(Object
*obj
)
246 CPURISCVState
*env
= &RISCV_CPU(obj
)->env
;
247 #if defined(TARGET_RISCV32)
248 set_misa(env
, MXL_RV32
, 0);
249 #elif defined(TARGET_RISCV64)
250 set_misa(env
, MXL_RV64
, 0);
255 static ObjectClass
*riscv_cpu_class_by_name(const char *cpu_model
)
261 cpuname
= g_strsplit(cpu_model
, ",", 1);
262 typename
= g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname
[0]);
263 oc
= object_class_by_name(typename
);
266 if (!oc
|| !object_class_dynamic_cast(oc
, TYPE_RISCV_CPU
) ||
267 object_class_is_abstract(oc
)) {
273 static void riscv_cpu_dump_state(CPUState
*cs
, FILE *f
, int flags
)
275 RISCVCPU
*cpu
= RISCV_CPU(cs
);
276 CPURISCVState
*env
= &cpu
->env
;
279 #if !defined(CONFIG_USER_ONLY)
280 if (riscv_has_ext(env
, RVH
)) {
281 qemu_fprintf(f
, " %s %d\n", "V = ", riscv_cpu_virt_enabled(env
));
284 qemu_fprintf(f
, " %s " TARGET_FMT_lx
"\n", "pc ", env
->pc
);
285 #ifndef CONFIG_USER_ONLY
287 static const int dump_csrs
[] = {
324 for (int i
= 0; i
< ARRAY_SIZE(dump_csrs
); ++i
) {
325 int csrno
= dump_csrs
[i
];
326 target_ulong val
= 0;
327 RISCVException res
= riscv_csrrw_debug(env
, csrno
, &val
, 0, 0);
330 * Rely on the smode, hmode, etc, predicates within csr.c
331 * to do the filtering of the registers that are present.
333 if (res
== RISCV_EXCP_NONE
) {
334 qemu_fprintf(f
, " %-8s " TARGET_FMT_lx
"\n",
335 csr_ops
[csrno
].name
, val
);
341 for (i
= 0; i
< 32; i
++) {
342 qemu_fprintf(f
, " %-8s " TARGET_FMT_lx
,
343 riscv_int_regnames
[i
], env
->gpr
[i
]);
345 qemu_fprintf(f
, "\n");
348 if (flags
& CPU_DUMP_FPU
) {
349 for (i
= 0; i
< 32; i
++) {
350 qemu_fprintf(f
, " %-8s %016" PRIx64
,
351 riscv_fpr_regnames
[i
], env
->fpr
[i
]);
353 qemu_fprintf(f
, "\n");
359 static void riscv_cpu_set_pc(CPUState
*cs
, vaddr value
)
361 RISCVCPU
*cpu
= RISCV_CPU(cs
);
362 CPURISCVState
*env
= &cpu
->env
;
364 if (env
->xl
== MXL_RV32
) {
365 env
->pc
= (int32_t)value
;
371 static void riscv_cpu_synchronize_from_tb(CPUState
*cs
,
372 const TranslationBlock
*tb
)
374 RISCVCPU
*cpu
= RISCV_CPU(cs
);
375 CPURISCVState
*env
= &cpu
->env
;
376 RISCVMXL xl
= FIELD_EX32(tb
->flags
, TB_FLAGS
, XL
);
378 if (xl
== MXL_RV32
) {
379 env
->pc
= (int32_t)tb
->pc
;
385 static bool riscv_cpu_has_work(CPUState
*cs
)
387 #ifndef CONFIG_USER_ONLY
388 RISCVCPU
*cpu
= RISCV_CPU(cs
);
389 CPURISCVState
*env
= &cpu
->env
;
391 * Definition of the WFI instruction requires it to ignore the privilege
392 * mode and delegation registers, but respect individual enables
394 return (env
->mip
& env
->mie
) != 0;
400 void restore_state_to_opc(CPURISCVState
*env
, TranslationBlock
*tb
,
403 RISCVMXL xl
= FIELD_EX32(tb
->flags
, TB_FLAGS
, XL
);
404 if (xl
== MXL_RV32
) {
405 env
->pc
= (int32_t)data
[0];
412 static void riscv_cpu_reset(DeviceState
*dev
)
414 #ifndef CONFIG_USER_ONLY
418 CPUState
*cs
= CPU(dev
);
419 RISCVCPU
*cpu
= RISCV_CPU(cs
);
420 RISCVCPUClass
*mcc
= RISCV_CPU_GET_CLASS(cpu
);
421 CPURISCVState
*env
= &cpu
->env
;
423 mcc
->parent_reset(dev
);
424 #ifndef CONFIG_USER_ONLY
425 env
->misa_mxl
= env
->misa_mxl_max
;
427 env
->mstatus
&= ~(MSTATUS_MIE
| MSTATUS_MPRV
);
428 if (env
->misa_mxl
> MXL_RV32
) {
430 * The reset status of SXL/UXL is undefined, but mstatus is WARL
431 * and we must ensure that the value after init is valid for read.
433 env
->mstatus
= set_field(env
->mstatus
, MSTATUS64_SXL
, env
->misa_mxl
);
434 env
->mstatus
= set_field(env
->mstatus
, MSTATUS64_UXL
, env
->misa_mxl
);
435 if (riscv_has_ext(env
, RVH
)) {
436 env
->vsstatus
= set_field(env
->vsstatus
,
437 MSTATUS64_SXL
, env
->misa_mxl
);
438 env
->vsstatus
= set_field(env
->vsstatus
,
439 MSTATUS64_UXL
, env
->misa_mxl
);
440 env
->mstatus_hs
= set_field(env
->mstatus_hs
,
441 MSTATUS64_SXL
, env
->misa_mxl
);
442 env
->mstatus_hs
= set_field(env
->mstatus_hs
,
443 MSTATUS64_UXL
, env
->misa_mxl
);
447 env
->miclaim
= MIP_SGEIP
;
448 env
->pc
= env
->resetvec
;
450 env
->two_stage_lookup
= false;
452 /* Initialized default priorities of local interrupts. */
453 for (i
= 0; i
< ARRAY_SIZE(env
->miprio
); i
++) {
454 iprio
= riscv_cpu_default_priority(i
);
455 env
->miprio
[i
] = (i
== IRQ_M_EXT
) ? 0 : iprio
;
456 env
->siprio
[i
] = (i
== IRQ_S_EXT
) ? 0 : iprio
;
460 while (!riscv_cpu_hviprio_index2irq(i
, &irq
, &rdzero
)) {
462 env
->hviprio
[irq
] = env
->miprio
[irq
];
466 /* mmte is supposed to have pm.current hardwired to 1 */
467 env
->mmte
|= (PM_EXT_INITIAL
| MMTE_M_PM_CURRENT
);
469 env
->xl
= riscv_cpu_mxl(env
);
470 riscv_cpu_update_mask(env
);
471 cs
->exception_index
= RISCV_EXCP_NONE
;
473 set_default_nan_mode(1, &env
->fp_status
);
475 #ifndef CONFIG_USER_ONLY
476 if (riscv_feature(env
, RISCV_FEATURE_DEBUG
)) {
477 riscv_trigger_init(env
);
481 kvm_riscv_reset_vcpu(cpu
);
486 static void riscv_cpu_disas_set_info(CPUState
*s
, disassemble_info
*info
)
488 RISCVCPU
*cpu
= RISCV_CPU(s
);
490 switch (riscv_cpu_mxl(&cpu
->env
)) {
492 info
->print_insn
= print_insn_riscv32
;
495 info
->print_insn
= print_insn_riscv64
;
498 info
->print_insn
= print_insn_riscv128
;
501 g_assert_not_reached();
505 static void riscv_cpu_realize(DeviceState
*dev
, Error
**errp
)
507 CPUState
*cs
= CPU(dev
);
508 RISCVCPU
*cpu
= RISCV_CPU(dev
);
509 CPURISCVState
*env
= &cpu
->env
;
510 RISCVCPUClass
*mcc
= RISCV_CPU_GET_CLASS(dev
);
511 CPUClass
*cc
= CPU_CLASS(mcc
);
512 int priv_version
= 0;
513 Error
*local_err
= NULL
;
515 cpu_exec_realizefn(cs
, &local_err
);
516 if (local_err
!= NULL
) {
517 error_propagate(errp
, local_err
);
521 if (cpu
->cfg
.priv_spec
) {
522 if (!g_strcmp0(cpu
->cfg
.priv_spec
, "v1.12.0")) {
523 priv_version
= PRIV_VERSION_1_12_0
;
524 } else if (!g_strcmp0(cpu
->cfg
.priv_spec
, "v1.11.0")) {
525 priv_version
= PRIV_VERSION_1_11_0
;
526 } else if (!g_strcmp0(cpu
->cfg
.priv_spec
, "v1.10.0")) {
527 priv_version
= PRIV_VERSION_1_10_0
;
530 "Unsupported privilege spec version '%s'",
537 set_priv_version(env
, priv_version
);
538 } else if (!env
->priv_ver
) {
539 set_priv_version(env
, PRIV_VERSION_1_12_0
);
543 riscv_set_feature(env
, RISCV_FEATURE_MMU
);
547 riscv_set_feature(env
, RISCV_FEATURE_PMP
);
550 * Enhanced PMP should only be available
551 * on harts with PMP support
554 riscv_set_feature(env
, RISCV_FEATURE_EPMP
);
559 riscv_set_feature(env
, RISCV_FEATURE_AIA
);
562 if (cpu
->cfg
.debug
) {
563 riscv_set_feature(env
, RISCV_FEATURE_DEBUG
);
566 set_resetvec(env
, cpu
->cfg
.resetvec
);
568 /* Validate that MISA_MXL is set properly. */
569 switch (env
->misa_mxl_max
) {
570 #ifdef TARGET_RISCV64
573 cc
->gdb_core_xml_file
= "riscv-64bit-cpu.xml";
577 cc
->gdb_core_xml_file
= "riscv-32bit-cpu.xml";
580 g_assert_not_reached();
582 assert(env
->misa_mxl_max
== env
->misa_mxl
);
584 /* If only MISA_EXT is unset for misa, then set it from properties */
585 if (env
->misa_ext
== 0) {
588 /* Do some ISA extension error checking */
589 if (cpu
->cfg
.ext_g
&& !(cpu
->cfg
.ext_i
&& cpu
->cfg
.ext_m
&&
590 cpu
->cfg
.ext_a
&& cpu
->cfg
.ext_f
&&
592 cpu
->cfg
.ext_icsr
&& cpu
->cfg
.ext_ifencei
)) {
593 warn_report("Setting G will also set IMAFD_Zicsr_Zifencei");
594 cpu
->cfg
.ext_i
= true;
595 cpu
->cfg
.ext_m
= true;
596 cpu
->cfg
.ext_a
= true;
597 cpu
->cfg
.ext_f
= true;
598 cpu
->cfg
.ext_d
= true;
599 cpu
->cfg
.ext_icsr
= true;
600 cpu
->cfg
.ext_ifencei
= true;
603 if (cpu
->cfg
.ext_i
&& cpu
->cfg
.ext_e
) {
605 "I and E extensions are incompatible");
609 if (!cpu
->cfg
.ext_i
&& !cpu
->cfg
.ext_e
) {
611 "Either I or E extension must be set");
615 if (cpu
->cfg
.ext_f
&& !cpu
->cfg
.ext_icsr
) {
616 error_setg(errp
, "F extension requires Zicsr");
620 if ((cpu
->cfg
.ext_zfh
|| cpu
->cfg
.ext_zfhmin
) && !cpu
->cfg
.ext_f
) {
621 error_setg(errp
, "Zfh/Zfhmin extensions require F extension");
625 if (cpu
->cfg
.ext_d
&& !cpu
->cfg
.ext_f
) {
626 error_setg(errp
, "D extension requires F extension");
630 if (cpu
->cfg
.ext_v
&& !cpu
->cfg
.ext_d
) {
631 error_setg(errp
, "V extension requires D extension");
635 if ((cpu
->cfg
.ext_zve32f
|| cpu
->cfg
.ext_zve64f
) && !cpu
->cfg
.ext_f
) {
636 error_setg(errp
, "Zve32f/Zve64f extensions require F extension");
640 /* Set the ISA extensions, checks should have happened above */
641 if (cpu
->cfg
.ext_zdinx
|| cpu
->cfg
.ext_zhinx
||
642 cpu
->cfg
.ext_zhinxmin
) {
643 cpu
->cfg
.ext_zfinx
= true;
646 if (cpu
->cfg
.ext_zfinx
) {
647 if (!cpu
->cfg
.ext_icsr
) {
648 error_setg(errp
, "Zfinx extension requires Zicsr");
651 if (cpu
->cfg
.ext_f
) {
653 "Zfinx cannot be supported together with F extension");
658 if (cpu
->cfg
.ext_zk
) {
659 cpu
->cfg
.ext_zkn
= true;
660 cpu
->cfg
.ext_zkr
= true;
661 cpu
->cfg
.ext_zkt
= true;
664 if (cpu
->cfg
.ext_zkn
) {
665 cpu
->cfg
.ext_zbkb
= true;
666 cpu
->cfg
.ext_zbkc
= true;
667 cpu
->cfg
.ext_zbkx
= true;
668 cpu
->cfg
.ext_zkne
= true;
669 cpu
->cfg
.ext_zknd
= true;
670 cpu
->cfg
.ext_zknh
= true;
673 if (cpu
->cfg
.ext_zks
) {
674 cpu
->cfg
.ext_zbkb
= true;
675 cpu
->cfg
.ext_zbkc
= true;
676 cpu
->cfg
.ext_zbkx
= true;
677 cpu
->cfg
.ext_zksed
= true;
678 cpu
->cfg
.ext_zksh
= true;
681 if (cpu
->cfg
.ext_i
) {
684 if (cpu
->cfg
.ext_e
) {
687 if (cpu
->cfg
.ext_m
) {
690 if (cpu
->cfg
.ext_a
) {
693 if (cpu
->cfg
.ext_f
) {
696 if (cpu
->cfg
.ext_d
) {
699 if (cpu
->cfg
.ext_c
) {
702 if (cpu
->cfg
.ext_s
) {
705 if (cpu
->cfg
.ext_u
) {
708 if (cpu
->cfg
.ext_h
) {
711 if (cpu
->cfg
.ext_v
) {
712 int vext_version
= VEXT_VERSION_1_00_0
;
714 if (!is_power_of_2(cpu
->cfg
.vlen
)) {
716 "Vector extension VLEN must be power of 2");
719 if (cpu
->cfg
.vlen
> RV_VLEN_MAX
|| cpu
->cfg
.vlen
< 128) {
721 "Vector extension implementation only supports VLEN "
722 "in the range [128, %d]", RV_VLEN_MAX
);
725 if (!is_power_of_2(cpu
->cfg
.elen
)) {
727 "Vector extension ELEN must be power of 2");
730 if (cpu
->cfg
.elen
> 64 || cpu
->cfg
.vlen
< 8) {
732 "Vector extension implementation only supports ELEN "
733 "in the range [8, 64]");
736 if (cpu
->cfg
.vext_spec
) {
737 if (!g_strcmp0(cpu
->cfg
.vext_spec
, "v1.0")) {
738 vext_version
= VEXT_VERSION_1_00_0
;
741 "Unsupported vector spec version '%s'",
746 qemu_log("vector version is not specified, "
747 "use the default value v1.0\n");
749 set_vext_version(env
, vext_version
);
751 if (cpu
->cfg
.ext_j
) {
755 set_misa(env
, env
->misa_mxl
, ext
);
758 riscv_cpu_register_gdb_regs_for_features(cs
);
763 mcc
->parent_realize(dev
, errp
);
766 #ifndef CONFIG_USER_ONLY
767 static void riscv_cpu_set_irq(void *opaque
, int irq
, int level
)
769 RISCVCPU
*cpu
= RISCV_CPU(opaque
);
770 CPURISCVState
*env
= &cpu
->env
;
772 if (irq
< IRQ_LOCAL_MAX
) {
786 kvm_riscv_set_irq(cpu
, irq
, level
);
788 riscv_cpu_update_mip(cpu
, 1 << irq
, BOOL_TO_MASK(level
));
793 kvm_riscv_set_irq(cpu
, irq
, level
);
795 env
->external_seip
= level
;
796 riscv_cpu_update_mip(cpu
, 1 << irq
,
797 BOOL_TO_MASK(level
| env
->software_seip
));
801 g_assert_not_reached();
803 } else if (irq
< (IRQ_LOCAL_MAX
+ IRQ_LOCAL_GUEST_MAX
)) {
804 /* Require H-extension for handling guest local interrupts */
805 if (!riscv_has_ext(env
, RVH
)) {
806 g_assert_not_reached();
809 /* Compute bit position in HGEIP CSR */
810 irq
= irq
- IRQ_LOCAL_MAX
+ 1;
811 if (env
->geilen
< irq
) {
812 g_assert_not_reached();
815 /* Update HGEIP CSR */
816 env
->hgeip
&= ~((target_ulong
)1 << irq
);
818 env
->hgeip
|= (target_ulong
)1 << irq
;
821 /* Update mip.SGEIP bit */
822 riscv_cpu_update_mip(cpu
, MIP_SGEIP
,
823 BOOL_TO_MASK(!!(env
->hgeie
& env
->hgeip
)));
825 g_assert_not_reached();
828 #endif /* CONFIG_USER_ONLY */
830 static void riscv_cpu_init(Object
*obj
)
832 RISCVCPU
*cpu
= RISCV_CPU(obj
);
834 cpu_set_cpustate_pointers(cpu
);
836 #ifndef CONFIG_USER_ONLY
837 qdev_init_gpio_in(DEVICE(cpu
), riscv_cpu_set_irq
,
838 IRQ_LOCAL_MAX
+ IRQ_LOCAL_GUEST_MAX
);
839 #endif /* CONFIG_USER_ONLY */
842 static Property riscv_cpu_properties
[] = {
843 /* Defaults for standard extensions */
844 DEFINE_PROP_BOOL("i", RISCVCPU
, cfg
.ext_i
, true),
845 DEFINE_PROP_BOOL("e", RISCVCPU
, cfg
.ext_e
, false),
846 DEFINE_PROP_BOOL("g", RISCVCPU
, cfg
.ext_g
, false),
847 DEFINE_PROP_BOOL("m", RISCVCPU
, cfg
.ext_m
, true),
848 DEFINE_PROP_BOOL("a", RISCVCPU
, cfg
.ext_a
, true),
849 DEFINE_PROP_BOOL("f", RISCVCPU
, cfg
.ext_f
, true),
850 DEFINE_PROP_BOOL("d", RISCVCPU
, cfg
.ext_d
, true),
851 DEFINE_PROP_BOOL("c", RISCVCPU
, cfg
.ext_c
, true),
852 DEFINE_PROP_BOOL("s", RISCVCPU
, cfg
.ext_s
, true),
853 DEFINE_PROP_BOOL("u", RISCVCPU
, cfg
.ext_u
, true),
854 DEFINE_PROP_BOOL("v", RISCVCPU
, cfg
.ext_v
, false),
855 DEFINE_PROP_BOOL("h", RISCVCPU
, cfg
.ext_h
, true),
856 DEFINE_PROP_BOOL("Counters", RISCVCPU
, cfg
.ext_counters
, true),
857 DEFINE_PROP_BOOL("Zifencei", RISCVCPU
, cfg
.ext_ifencei
, true),
858 DEFINE_PROP_BOOL("Zicsr", RISCVCPU
, cfg
.ext_icsr
, true),
859 DEFINE_PROP_BOOL("Zfh", RISCVCPU
, cfg
.ext_zfh
, false),
860 DEFINE_PROP_BOOL("Zfhmin", RISCVCPU
, cfg
.ext_zfhmin
, false),
861 DEFINE_PROP_BOOL("Zve32f", RISCVCPU
, cfg
.ext_zve32f
, false),
862 DEFINE_PROP_BOOL("Zve64f", RISCVCPU
, cfg
.ext_zve64f
, false),
863 DEFINE_PROP_BOOL("mmu", RISCVCPU
, cfg
.mmu
, true),
864 DEFINE_PROP_BOOL("pmp", RISCVCPU
, cfg
.pmp
, true),
865 DEFINE_PROP_BOOL("debug", RISCVCPU
, cfg
.debug
, true),
867 DEFINE_PROP_STRING("priv_spec", RISCVCPU
, cfg
.priv_spec
),
868 DEFINE_PROP_STRING("vext_spec", RISCVCPU
, cfg
.vext_spec
),
869 DEFINE_PROP_UINT16("vlen", RISCVCPU
, cfg
.vlen
, 128),
870 DEFINE_PROP_UINT16("elen", RISCVCPU
, cfg
.elen
, 64),
872 DEFINE_PROP_UINT32("mvendorid", RISCVCPU
, cfg
.mvendorid
, 0),
873 DEFINE_PROP_UINT64("marchid", RISCVCPU
, cfg
.marchid
, RISCV_CPU_MARCHID
),
874 DEFINE_PROP_UINT64("mimpid", RISCVCPU
, cfg
.mimpid
, RISCV_CPU_MIMPID
),
876 DEFINE_PROP_BOOL("svinval", RISCVCPU
, cfg
.ext_svinval
, false),
877 DEFINE_PROP_BOOL("svnapot", RISCVCPU
, cfg
.ext_svnapot
, false),
878 DEFINE_PROP_BOOL("svpbmt", RISCVCPU
, cfg
.ext_svpbmt
, false),
880 DEFINE_PROP_BOOL("zba", RISCVCPU
, cfg
.ext_zba
, true),
881 DEFINE_PROP_BOOL("zbb", RISCVCPU
, cfg
.ext_zbb
, true),
882 DEFINE_PROP_BOOL("zbc", RISCVCPU
, cfg
.ext_zbc
, true),
883 DEFINE_PROP_BOOL("zbkb", RISCVCPU
, cfg
.ext_zbkb
, false),
884 DEFINE_PROP_BOOL("zbkc", RISCVCPU
, cfg
.ext_zbkc
, false),
885 DEFINE_PROP_BOOL("zbkx", RISCVCPU
, cfg
.ext_zbkx
, false),
886 DEFINE_PROP_BOOL("zbs", RISCVCPU
, cfg
.ext_zbs
, true),
887 DEFINE_PROP_BOOL("zk", RISCVCPU
, cfg
.ext_zk
, false),
888 DEFINE_PROP_BOOL("zkn", RISCVCPU
, cfg
.ext_zkn
, false),
889 DEFINE_PROP_BOOL("zknd", RISCVCPU
, cfg
.ext_zknd
, false),
890 DEFINE_PROP_BOOL("zkne", RISCVCPU
, cfg
.ext_zkne
, false),
891 DEFINE_PROP_BOOL("zknh", RISCVCPU
, cfg
.ext_zknh
, false),
892 DEFINE_PROP_BOOL("zkr", RISCVCPU
, cfg
.ext_zkr
, false),
893 DEFINE_PROP_BOOL("zks", RISCVCPU
, cfg
.ext_zks
, false),
894 DEFINE_PROP_BOOL("zksed", RISCVCPU
, cfg
.ext_zksed
, false),
895 DEFINE_PROP_BOOL("zksh", RISCVCPU
, cfg
.ext_zksh
, false),
896 DEFINE_PROP_BOOL("zkt", RISCVCPU
, cfg
.ext_zkt
, false),
898 DEFINE_PROP_BOOL("zdinx", RISCVCPU
, cfg
.ext_zdinx
, false),
899 DEFINE_PROP_BOOL("zfinx", RISCVCPU
, cfg
.ext_zfinx
, false),
900 DEFINE_PROP_BOOL("zhinx", RISCVCPU
, cfg
.ext_zhinx
, false),
901 DEFINE_PROP_BOOL("zhinxmin", RISCVCPU
, cfg
.ext_zhinxmin
, false),
903 /* Vendor-specific custom extensions */
904 DEFINE_PROP_BOOL("xventanacondops", RISCVCPU
, cfg
.ext_XVentanaCondOps
, false),
906 /* These are experimental so mark with 'x-' */
907 DEFINE_PROP_BOOL("x-j", RISCVCPU
, cfg
.ext_j
, false),
909 DEFINE_PROP_BOOL("x-epmp", RISCVCPU
, cfg
.epmp
, false),
910 DEFINE_PROP_BOOL("x-aia", RISCVCPU
, cfg
.aia
, false),
912 DEFINE_PROP_UINT64("resetvec", RISCVCPU
, cfg
.resetvec
, DEFAULT_RSTVEC
),
914 DEFINE_PROP_BOOL("short-isa-string", RISCVCPU
, cfg
.short_isa_string
, false),
915 DEFINE_PROP_END_OF_LIST(),
918 static gchar
*riscv_gdb_arch_name(CPUState
*cs
)
920 RISCVCPU
*cpu
= RISCV_CPU(cs
);
921 CPURISCVState
*env
= &cpu
->env
;
923 switch (riscv_cpu_mxl(env
)) {
925 return g_strdup("riscv:rv32");
928 return g_strdup("riscv:rv64");
930 g_assert_not_reached();
934 static const char *riscv_gdb_get_dynamic_xml(CPUState
*cs
, const char *xmlname
)
936 RISCVCPU
*cpu
= RISCV_CPU(cs
);
938 if (strcmp(xmlname
, "riscv-csr.xml") == 0) {
939 return cpu
->dyn_csr_xml
;
940 } else if (strcmp(xmlname
, "riscv-vector.xml") == 0) {
941 return cpu
->dyn_vreg_xml
;
947 #ifndef CONFIG_USER_ONLY
948 #include "hw/core/sysemu-cpu-ops.h"
950 static const struct SysemuCPUOps riscv_sysemu_ops
= {
951 .get_phys_page_debug
= riscv_cpu_get_phys_page_debug
,
952 .write_elf64_note
= riscv_cpu_write_elf64_note
,
953 .write_elf32_note
= riscv_cpu_write_elf32_note
,
954 .legacy_vmsd
= &vmstate_riscv_cpu
,
958 #include "hw/core/tcg-cpu-ops.h"
960 static const struct TCGCPUOps riscv_tcg_ops
= {
961 .initialize
= riscv_translate_init
,
962 .synchronize_from_tb
= riscv_cpu_synchronize_from_tb
,
964 #ifndef CONFIG_USER_ONLY
965 .tlb_fill
= riscv_cpu_tlb_fill
,
966 .cpu_exec_interrupt
= riscv_cpu_exec_interrupt
,
967 .do_interrupt
= riscv_cpu_do_interrupt
,
968 .do_transaction_failed
= riscv_cpu_do_transaction_failed
,
969 .do_unaligned_access
= riscv_cpu_do_unaligned_access
,
970 .debug_excp_handler
= riscv_cpu_debug_excp_handler
,
971 .debug_check_breakpoint
= riscv_cpu_debug_check_breakpoint
,
972 .debug_check_watchpoint
= riscv_cpu_debug_check_watchpoint
,
973 #endif /* !CONFIG_USER_ONLY */
976 static void riscv_cpu_class_init(ObjectClass
*c
, void *data
)
978 RISCVCPUClass
*mcc
= RISCV_CPU_CLASS(c
);
979 CPUClass
*cc
= CPU_CLASS(c
);
980 DeviceClass
*dc
= DEVICE_CLASS(c
);
982 device_class_set_parent_realize(dc
, riscv_cpu_realize
,
983 &mcc
->parent_realize
);
985 device_class_set_parent_reset(dc
, riscv_cpu_reset
, &mcc
->parent_reset
);
987 cc
->class_by_name
= riscv_cpu_class_by_name
;
988 cc
->has_work
= riscv_cpu_has_work
;
989 cc
->dump_state
= riscv_cpu_dump_state
;
990 cc
->set_pc
= riscv_cpu_set_pc
;
991 cc
->gdb_read_register
= riscv_cpu_gdb_read_register
;
992 cc
->gdb_write_register
= riscv_cpu_gdb_write_register
;
993 cc
->gdb_num_core_regs
= 33;
994 cc
->gdb_stop_before_watchpoint
= true;
995 cc
->disas_set_info
= riscv_cpu_disas_set_info
;
996 #ifndef CONFIG_USER_ONLY
997 cc
->sysemu_ops
= &riscv_sysemu_ops
;
999 cc
->gdb_arch_name
= riscv_gdb_arch_name
;
1000 cc
->gdb_get_dynamic_xml
= riscv_gdb_get_dynamic_xml
;
1001 cc
->tcg_ops
= &riscv_tcg_ops
;
1003 device_class_set_props(dc
, riscv_cpu_properties
);
1006 #define ISA_EDATA_ENTRY(name, prop) {#name, cpu->cfg.prop}
1008 static void riscv_isa_string_ext(RISCVCPU
*cpu
, char **isa_str
, int max_str_len
)
1010 char *old
= *isa_str
;
1011 char *new = *isa_str
;
1015 * Here are the ordering rules of extension naming defined by RISC-V
1017 * 1. All extensions should be separated from other multi-letter extensions
1019 * 2. The first letter following the 'Z' conventionally indicates the most
1020 * closely related alphabetical extension category, IMAFDQLCBKJTPVH.
1021 * If multiple 'Z' extensions are named, they should be ordered first
1022 * by category, then alphabetically within a category.
1023 * 3. Standard supervisor-level extensions (starts with 'S') should be
1024 * listed after standard unprivileged extensions. If multiple
1025 * supervisor-level extensions are listed, they should be ordered
1027 * 4. Non-standard extensions (starts with 'X') must be listed after all
1028 * standard extensions. They must be separated from other multi-letter
1029 * extensions by an underscore.
1031 struct isa_ext_data isa_edata_arr
[] = {
1032 ISA_EDATA_ENTRY(zicsr
, ext_icsr
),
1033 ISA_EDATA_ENTRY(zifencei
, ext_ifencei
),
1034 ISA_EDATA_ENTRY(zfh
, ext_zfh
),
1035 ISA_EDATA_ENTRY(zfhmin
, ext_zfhmin
),
1036 ISA_EDATA_ENTRY(zfinx
, ext_zfinx
),
1037 ISA_EDATA_ENTRY(zdinx
, ext_zdinx
),
1038 ISA_EDATA_ENTRY(zba
, ext_zba
),
1039 ISA_EDATA_ENTRY(zbb
, ext_zbb
),
1040 ISA_EDATA_ENTRY(zbc
, ext_zbc
),
1041 ISA_EDATA_ENTRY(zbkb
, ext_zbkb
),
1042 ISA_EDATA_ENTRY(zbkc
, ext_zbkc
),
1043 ISA_EDATA_ENTRY(zbkx
, ext_zbkx
),
1044 ISA_EDATA_ENTRY(zbs
, ext_zbs
),
1045 ISA_EDATA_ENTRY(zk
, ext_zk
),
1046 ISA_EDATA_ENTRY(zkn
, ext_zkn
),
1047 ISA_EDATA_ENTRY(zknd
, ext_zknd
),
1048 ISA_EDATA_ENTRY(zkne
, ext_zkne
),
1049 ISA_EDATA_ENTRY(zknh
, ext_zknh
),
1050 ISA_EDATA_ENTRY(zkr
, ext_zkr
),
1051 ISA_EDATA_ENTRY(zks
, ext_zks
),
1052 ISA_EDATA_ENTRY(zksed
, ext_zksed
),
1053 ISA_EDATA_ENTRY(zksh
, ext_zksh
),
1054 ISA_EDATA_ENTRY(zkt
, ext_zkt
),
1055 ISA_EDATA_ENTRY(zve32f
, ext_zve32f
),
1056 ISA_EDATA_ENTRY(zve64f
, ext_zve64f
),
1057 ISA_EDATA_ENTRY(zhinx
, ext_zhinx
),
1058 ISA_EDATA_ENTRY(zhinxmin
, ext_zhinxmin
),
1059 ISA_EDATA_ENTRY(svinval
, ext_svinval
),
1060 ISA_EDATA_ENTRY(svnapot
, ext_svnapot
),
1061 ISA_EDATA_ENTRY(svpbmt
, ext_svpbmt
),
1064 for (i
= 0; i
< ARRAY_SIZE(isa_edata_arr
); i
++) {
1065 if (isa_edata_arr
[i
].enabled
) {
1066 new = g_strconcat(old
, "_", isa_edata_arr
[i
].name
, NULL
);
1075 char *riscv_isa_string(RISCVCPU
*cpu
)
1078 const size_t maxlen
= sizeof("rv128") + sizeof(riscv_single_letter_exts
);
1079 char *isa_str
= g_new(char, maxlen
);
1080 char *p
= isa_str
+ snprintf(isa_str
, maxlen
, "rv%d", TARGET_LONG_BITS
);
1081 for (i
= 0; i
< sizeof(riscv_single_letter_exts
) - 1; i
++) {
1082 if (cpu
->env
.misa_ext
& RV(riscv_single_letter_exts
[i
])) {
1083 *p
++ = qemu_tolower(riscv_single_letter_exts
[i
]);
1087 if (!cpu
->cfg
.short_isa_string
) {
1088 riscv_isa_string_ext(cpu
, &isa_str
, maxlen
);
1093 static gint
riscv_cpu_list_compare(gconstpointer a
, gconstpointer b
)
1095 ObjectClass
*class_a
= (ObjectClass
*)a
;
1096 ObjectClass
*class_b
= (ObjectClass
*)b
;
1097 const char *name_a
, *name_b
;
1099 name_a
= object_class_get_name(class_a
);
1100 name_b
= object_class_get_name(class_b
);
1101 return strcmp(name_a
, name_b
);
1104 static void riscv_cpu_list_entry(gpointer data
, gpointer user_data
)
1106 const char *typename
= object_class_get_name(OBJECT_CLASS(data
));
1107 int len
= strlen(typename
) - strlen(RISCV_CPU_TYPE_SUFFIX
);
1109 qemu_printf("%.*s\n", len
, typename
);
1112 void riscv_cpu_list(void)
1116 list
= object_class_get_list(TYPE_RISCV_CPU
, false);
1117 list
= g_slist_sort(list
, riscv_cpu_list_compare
);
1118 g_slist_foreach(list
, riscv_cpu_list_entry
, NULL
);
1122 #define DEFINE_CPU(type_name, initfn) \
1124 .name = type_name, \
1125 .parent = TYPE_RISCV_CPU, \
1126 .instance_init = initfn \
1129 static const TypeInfo riscv_cpu_type_infos
[] = {
1131 .name
= TYPE_RISCV_CPU
,
1133 .instance_size
= sizeof(RISCVCPU
),
1134 .instance_align
= __alignof__(RISCVCPU
),
1135 .instance_init
= riscv_cpu_init
,
1137 .class_size
= sizeof(RISCVCPUClass
),
1138 .class_init
= riscv_cpu_class_init
,
1140 DEFINE_CPU(TYPE_RISCV_CPU_ANY
, riscv_any_cpu_init
),
1141 #if defined(CONFIG_KVM)
1142 DEFINE_CPU(TYPE_RISCV_CPU_HOST
, riscv_host_cpu_init
),
1144 #if defined(TARGET_RISCV32)
1145 DEFINE_CPU(TYPE_RISCV_CPU_BASE32
, rv32_base_cpu_init
),
1146 DEFINE_CPU(TYPE_RISCV_CPU_IBEX
, rv32_ibex_cpu_init
),
1147 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31
, rv32_sifive_e_cpu_init
),
1148 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34
, rv32_imafcu_nommu_cpu_init
),
1149 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34
, rv32_sifive_u_cpu_init
),
1150 #elif defined(TARGET_RISCV64)
1151 DEFINE_CPU(TYPE_RISCV_CPU_BASE64
, rv64_base_cpu_init
),
1152 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51
, rv64_sifive_e_cpu_init
),
1153 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54
, rv64_sifive_u_cpu_init
),
1154 DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C
, rv64_sifive_u_cpu_init
),
1155 DEFINE_CPU(TYPE_RISCV_CPU_BASE128
, rv128_base_cpu_init
),
1159 DEFINE_TYPES(riscv_cpu_type_infos
)