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_MIPID 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];
411 static void riscv_cpu_reset(DeviceState *dev)
413 #ifndef CONFIG_USER_ONLY
417 CPUState *cs = CPU(dev);
418 RISCVCPU *cpu = RISCV_CPU(cs);
419 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
420 CPURISCVState *env = &cpu->env;
422 mcc->parent_reset(dev);
423 #ifndef CONFIG_USER_ONLY
424 env->misa_mxl = env->misa_mxl_max;
426 env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
427 if (env->misa_mxl > MXL_RV32) {
429 * The reset status of SXL/UXL is undefined, but mstatus is WARL
430 * and we must ensure that the value after init is valid for read.
432 env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl);
433 env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
434 if (riscv_has_ext(env, RVH)) {
435 env->vsstatus = set_field(env->vsstatus,
436 MSTATUS64_SXL, env->misa_mxl);
437 env->vsstatus = set_field(env->vsstatus,
438 MSTATUS64_UXL, env->misa_mxl);
439 env->mstatus_hs = set_field(env->mstatus_hs,
440 MSTATUS64_SXL, env->misa_mxl);
441 env->mstatus_hs = set_field(env->mstatus_hs,
442 MSTATUS64_UXL, env->misa_mxl);
446 env->miclaim = MIP_SGEIP;
447 env->pc = env->resetvec;
448 env->two_stage_lookup = false;
450 /* Initialized default priorities of local interrupts. */
451 for (i = 0; i < ARRAY_SIZE(env->miprio); i++) {
452 iprio = riscv_cpu_default_priority(i);
453 env->miprio[i] = (i == IRQ_M_EXT) ? 0 : iprio;
454 env->siprio[i] = (i == IRQ_S_EXT) ? 0 : iprio;
458 while (!riscv_cpu_hviprio_index2irq(i, &irq, &rdzero)) {
460 env->hviprio[irq] = env->miprio[irq];
464 /* mmte is supposed to have pm.current hardwired to 1 */
465 env->mmte |= (PM_EXT_INITIAL | MMTE_M_PM_CURRENT);
467 env->xl = riscv_cpu_mxl(env);
468 riscv_cpu_update_mask(env);
469 cs->exception_index = RISCV_EXCP_NONE;
471 set_default_nan_mode(1, &env->fp_status);
473 #ifndef CONFIG_USER_ONLY
474 if (riscv_feature(env, RISCV_FEATURE_DEBUG)) {
475 riscv_trigger_init(env);
479 kvm_riscv_reset_vcpu(cpu);
484 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
486 RISCVCPU *cpu = RISCV_CPU(s);
488 switch (riscv_cpu_mxl(&cpu->env)) {
490 info->print_insn = print_insn_riscv32;
493 info->print_insn = print_insn_riscv64;
496 info->print_insn = print_insn_riscv128;
499 g_assert_not_reached();
503 static void riscv_cpu_realize(DeviceState *dev, Error **errp)
505 CPUState *cs = CPU(dev);
506 RISCVCPU *cpu = RISCV_CPU(dev);
507 CPURISCVState *env = &cpu->env;
508 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
509 CPUClass *cc = CPU_CLASS(mcc);
510 int priv_version = 0;
511 Error *local_err = NULL;
513 cpu_exec_realizefn(cs, &local_err);
514 if (local_err != NULL) {
515 error_propagate(errp, local_err);
519 if (cpu->cfg.priv_spec) {
520 if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) {
521 priv_version = PRIV_VERSION_1_12_0;
522 } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) {
523 priv_version = PRIV_VERSION_1_11_0;
524 } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) {
525 priv_version = PRIV_VERSION_1_10_0;
528 "Unsupported privilege spec version '%s'",
535 set_priv_version(env, priv_version);
536 } else if (!env->priv_ver) {
537 set_priv_version(env, PRIV_VERSION_1_12_0);
541 riscv_set_feature(env, RISCV_FEATURE_MMU);
545 riscv_set_feature(env, RISCV_FEATURE_PMP);
548 * Enhanced PMP should only be available
549 * on harts with PMP support
552 riscv_set_feature(env, RISCV_FEATURE_EPMP);
557 riscv_set_feature(env, RISCV_FEATURE_AIA);
560 if (cpu->cfg.debug) {
561 riscv_set_feature(env, RISCV_FEATURE_DEBUG);
564 set_resetvec(env, cpu->cfg.resetvec);
566 /* Validate that MISA_MXL is set properly. */
567 switch (env->misa_mxl_max) {
568 #ifdef TARGET_RISCV64
571 cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
575 cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
578 g_assert_not_reached();
580 assert(env->misa_mxl_max == env->misa_mxl);
582 /* If only MISA_EXT is unset for misa, then set it from properties */
583 if (env->misa_ext == 0) {
586 /* Do some ISA extension error checking */
587 if (cpu->cfg.ext_i && cpu->cfg.ext_e) {
589 "I and E extensions are incompatible");
593 if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
595 "Either I or E extension must be set");
599 if (cpu->cfg.ext_g && !(cpu->cfg.ext_i && cpu->cfg.ext_m &&
600 cpu->cfg.ext_a && cpu->cfg.ext_f &&
602 cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) {
603 warn_report("Setting G will also set IMAFD_Zicsr_Zifencei");
604 cpu->cfg.ext_i = true;
605 cpu->cfg.ext_m = true;
606 cpu->cfg.ext_a = true;
607 cpu->cfg.ext_f = true;
608 cpu->cfg.ext_d = true;
609 cpu->cfg.ext_icsr = true;
610 cpu->cfg.ext_ifencei = true;
613 if (cpu->cfg.ext_f && !cpu->cfg.ext_icsr) {
614 error_setg(errp, "F extension requires Zicsr");
618 if ((cpu->cfg.ext_zfh || cpu->cfg.ext_zfhmin) && !cpu->cfg.ext_f) {
619 error_setg(errp, "Zfh/Zfhmin extensions require F extension");
623 if (cpu->cfg.ext_d && !cpu->cfg.ext_f) {
624 error_setg(errp, "D extension requires F extension");
628 if (cpu->cfg.ext_v && !cpu->cfg.ext_d) {
629 error_setg(errp, "V extension requires D extension");
633 if (cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinx ||
634 cpu->cfg.ext_zhinxmin) {
635 cpu->cfg.ext_zfinx = true;
638 if (cpu->cfg.ext_zfinx && !cpu->cfg.ext_icsr) {
639 error_setg(errp, "Zfinx extension requires Zicsr");
643 if (cpu->cfg.ext_zk) {
644 cpu->cfg.ext_zkn = true;
645 cpu->cfg.ext_zkr = true;
646 cpu->cfg.ext_zkt = true;
649 if (cpu->cfg.ext_zkn) {
650 cpu->cfg.ext_zbkb = true;
651 cpu->cfg.ext_zbkc = true;
652 cpu->cfg.ext_zbkx = true;
653 cpu->cfg.ext_zkne = true;
654 cpu->cfg.ext_zknd = true;
655 cpu->cfg.ext_zknh = true;
658 if (cpu->cfg.ext_zks) {
659 cpu->cfg.ext_zbkb = true;
660 cpu->cfg.ext_zbkc = true;
661 cpu->cfg.ext_zbkx = true;
662 cpu->cfg.ext_zksed = true;
663 cpu->cfg.ext_zksh = true;
666 /* Set the ISA extensions, checks should have happened above */
667 if (cpu->cfg.ext_i) {
670 if (cpu->cfg.ext_e) {
673 if (cpu->cfg.ext_m) {
676 if (cpu->cfg.ext_a) {
679 if (cpu->cfg.ext_f) {
682 if (cpu->cfg.ext_d) {
685 if (cpu->cfg.ext_c) {
688 if (cpu->cfg.ext_s) {
691 if (cpu->cfg.ext_u) {
694 if (cpu->cfg.ext_h) {
697 if (cpu->cfg.ext_v) {
698 int vext_version = VEXT_VERSION_1_00_0;
700 if (!is_power_of_2(cpu->cfg.vlen)) {
702 "Vector extension VLEN must be power of 2");
705 if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) {
707 "Vector extension implementation only supports VLEN "
708 "in the range [128, %d]", RV_VLEN_MAX);
711 if (!is_power_of_2(cpu->cfg.elen)) {
713 "Vector extension ELEN must be power of 2");
716 if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) {
718 "Vector extension implementation only supports ELEN "
719 "in the range [8, 64]");
722 if (cpu->cfg.vext_spec) {
723 if (!g_strcmp0(cpu->cfg.vext_spec, "v1.0")) {
724 vext_version = VEXT_VERSION_1_00_0;
727 "Unsupported vector spec version '%s'",
732 qemu_log("vector version is not specified, "
733 "use the default value v1.0\n");
735 set_vext_version(env, vext_version);
737 if ((cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) && !cpu->cfg.ext_f) {
738 error_setg(errp, "Zve32f/Zve64f extension depends upon RVF.");
741 if (cpu->cfg.ext_j) {
744 if (cpu->cfg.ext_zfinx && ((ext & (RVF | RVD)) || cpu->cfg.ext_zfh ||
745 cpu->cfg.ext_zfhmin)) {
747 "'Zfinx' cannot be supported together with 'F', 'D', 'Zfh',"
752 set_misa(env, env->misa_mxl, ext);
755 riscv_cpu_register_gdb_regs_for_features(cs);
760 mcc->parent_realize(dev, errp);
763 #ifndef CONFIG_USER_ONLY
764 static void riscv_cpu_set_irq(void *opaque, int irq, int level)
766 RISCVCPU *cpu = RISCV_CPU(opaque);
767 CPURISCVState *env = &cpu->env;
769 if (irq < IRQ_LOCAL_MAX) {
783 kvm_riscv_set_irq(cpu, irq, level);
785 riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
790 kvm_riscv_set_irq(cpu, irq, level);
792 env->external_seip = level;
793 riscv_cpu_update_mip(cpu, 1 << irq,
794 BOOL_TO_MASK(level | env->software_seip));
798 g_assert_not_reached();
800 } else if (irq < (IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX)) {
801 /* Require H-extension for handling guest local interrupts */
802 if (!riscv_has_ext(env, RVH)) {
803 g_assert_not_reached();
806 /* Compute bit position in HGEIP CSR */
807 irq = irq - IRQ_LOCAL_MAX + 1;
808 if (env->geilen < irq) {
809 g_assert_not_reached();
812 /* Update HGEIP CSR */
813 env->hgeip &= ~((target_ulong)1 << irq);
815 env->hgeip |= (target_ulong)1 << irq;
818 /* Update mip.SGEIP bit */
819 riscv_cpu_update_mip(cpu, MIP_SGEIP,
820 BOOL_TO_MASK(!!(env->hgeie & env->hgeip)));
822 g_assert_not_reached();
825 #endif /* CONFIG_USER_ONLY */
827 static void riscv_cpu_init(Object *obj)
829 RISCVCPU *cpu = RISCV_CPU(obj);
831 cpu_set_cpustate_pointers(cpu);
833 #ifndef CONFIG_USER_ONLY
834 qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq,
835 IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX);
836 #endif /* CONFIG_USER_ONLY */
839 static Property riscv_cpu_properties[] = {
840 /* Defaults for standard extensions */
841 DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true),
842 DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false),
843 DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, false),
844 DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
845 DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true),
846 DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
847 DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
848 DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true),
849 DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
850 DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
851 DEFINE_PROP_BOOL("v", RISCVCPU, cfg.ext_v, false),
852 DEFINE_PROP_BOOL("h", RISCVCPU, cfg.ext_h, true),
853 DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
854 DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
855 DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
856 DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false),
857 DEFINE_PROP_BOOL("Zfhmin", RISCVCPU, cfg.ext_zfhmin, false),
858 DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false),
859 DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false),
860 DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true),
861 DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true),
862 DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true),
864 DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
865 DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec),
866 DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128),
867 DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64),
869 DEFINE_PROP_UINT32("mvendorid", RISCVCPU, cfg.mvendorid, 0),
870 DEFINE_PROP_UINT64("marchid", RISCVCPU, cfg.marchid, RISCV_CPU_MARCHID),
871 DEFINE_PROP_UINT64("mipid", RISCVCPU, cfg.mipid, RISCV_CPU_MIPID),
873 DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false),
874 DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false),
875 DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false),
877 DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true),
878 DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true),
879 DEFINE_PROP_BOOL("zbc", RISCVCPU, cfg.ext_zbc, true),
880 DEFINE_PROP_BOOL("zbkb", RISCVCPU, cfg.ext_zbkb, false),
881 DEFINE_PROP_BOOL("zbkc", RISCVCPU, cfg.ext_zbkc, false),
882 DEFINE_PROP_BOOL("zbkx", RISCVCPU, cfg.ext_zbkx, false),
883 DEFINE_PROP_BOOL("zbs", RISCVCPU, cfg.ext_zbs, true),
884 DEFINE_PROP_BOOL("zk", RISCVCPU, cfg.ext_zk, false),
885 DEFINE_PROP_BOOL("zkn", RISCVCPU, cfg.ext_zkn, false),
886 DEFINE_PROP_BOOL("zknd", RISCVCPU, cfg.ext_zknd, false),
887 DEFINE_PROP_BOOL("zkne", RISCVCPU, cfg.ext_zkne, false),
888 DEFINE_PROP_BOOL("zknh", RISCVCPU, cfg.ext_zknh, false),
889 DEFINE_PROP_BOOL("zkr", RISCVCPU, cfg.ext_zkr, false),
890 DEFINE_PROP_BOOL("zks", RISCVCPU, cfg.ext_zks, false),
891 DEFINE_PROP_BOOL("zksed", RISCVCPU, cfg.ext_zksed, false),
892 DEFINE_PROP_BOOL("zksh", RISCVCPU, cfg.ext_zksh, false),
893 DEFINE_PROP_BOOL("zkt", RISCVCPU, cfg.ext_zkt, false),
895 DEFINE_PROP_BOOL("zdinx", RISCVCPU, cfg.ext_zdinx, false),
896 DEFINE_PROP_BOOL("zfinx", RISCVCPU, cfg.ext_zfinx, false),
897 DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false),
898 DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false),
900 /* Vendor-specific custom extensions */
901 DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
903 /* These are experimental so mark with 'x-' */
904 DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
906 DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
907 DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false),
909 DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC),
911 DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false),
912 DEFINE_PROP_END_OF_LIST(),
915 static gchar *riscv_gdb_arch_name(CPUState *cs)
917 RISCVCPU *cpu = RISCV_CPU(cs);
918 CPURISCVState *env = &cpu->env;
920 switch (riscv_cpu_mxl(env)) {
922 return g_strdup("riscv:rv32");
925 return g_strdup("riscv:rv64");
927 g_assert_not_reached();
931 static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
933 RISCVCPU *cpu = RISCV_CPU(cs);
935 if (strcmp(xmlname, "riscv-csr.xml") == 0) {
936 return cpu->dyn_csr_xml;
937 } else if (strcmp(xmlname, "riscv-vector.xml") == 0) {
938 return cpu->dyn_vreg_xml;
944 #ifndef CONFIG_USER_ONLY
945 #include "hw/core/sysemu-cpu-ops.h"
947 static const struct SysemuCPUOps riscv_sysemu_ops = {
948 .get_phys_page_debug = riscv_cpu_get_phys_page_debug,
949 .write_elf64_note = riscv_cpu_write_elf64_note,
950 .write_elf32_note = riscv_cpu_write_elf32_note,
951 .legacy_vmsd = &vmstate_riscv_cpu,
955 #include "hw/core/tcg-cpu-ops.h"
957 static const struct TCGCPUOps riscv_tcg_ops = {
958 .initialize = riscv_translate_init,
959 .synchronize_from_tb = riscv_cpu_synchronize_from_tb,
961 #ifndef CONFIG_USER_ONLY
962 .tlb_fill = riscv_cpu_tlb_fill,
963 .cpu_exec_interrupt = riscv_cpu_exec_interrupt,
964 .do_interrupt = riscv_cpu_do_interrupt,
965 .do_transaction_failed = riscv_cpu_do_transaction_failed,
966 .do_unaligned_access = riscv_cpu_do_unaligned_access,
967 .debug_excp_handler = riscv_cpu_debug_excp_handler,
968 .debug_check_breakpoint = riscv_cpu_debug_check_breakpoint,
969 .debug_check_watchpoint = riscv_cpu_debug_check_watchpoint,
970 #endif /* !CONFIG_USER_ONLY */
973 static void riscv_cpu_class_init(ObjectClass *c, void *data)
975 RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
976 CPUClass *cc = CPU_CLASS(c);
977 DeviceClass *dc = DEVICE_CLASS(c);
979 device_class_set_parent_realize(dc, riscv_cpu_realize,
980 &mcc->parent_realize);
982 device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
984 cc->class_by_name = riscv_cpu_class_by_name;
985 cc->has_work = riscv_cpu_has_work;
986 cc->dump_state = riscv_cpu_dump_state;
987 cc->set_pc = riscv_cpu_set_pc;
988 cc->gdb_read_register = riscv_cpu_gdb_read_register;
989 cc->gdb_write_register = riscv_cpu_gdb_write_register;
990 cc->gdb_num_core_regs = 33;
991 cc->gdb_stop_before_watchpoint = true;
992 cc->disas_set_info = riscv_cpu_disas_set_info;
993 #ifndef CONFIG_USER_ONLY
994 cc->sysemu_ops = &riscv_sysemu_ops;
996 cc->gdb_arch_name = riscv_gdb_arch_name;
997 cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml;
998 cc->tcg_ops = &riscv_tcg_ops;
1000 device_class_set_props(dc, riscv_cpu_properties);
1003 #define ISA_EDATA_ENTRY(name, prop) {#name, cpu->cfg.prop}
1005 static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int max_str_len)
1007 char *old = *isa_str;
1008 char *new = *isa_str;
1012 * Here are the ordering rules of extension naming defined by RISC-V
1014 * 1. All extensions should be separated from other multi-letter extensions
1016 * 2. The first letter following the 'Z' conventionally indicates the most
1017 * closely related alphabetical extension category, IMAFDQLCBKJTPVH.
1018 * If multiple 'Z' extensions are named, they should be ordered first
1019 * by category, then alphabetically within a category.
1020 * 3. Standard supervisor-level extensions (starts with 'S') should be
1021 * listed after standard unprivileged extensions. If multiple
1022 * supervisor-level extensions are listed, they should be ordered
1024 * 4. Non-standard extensions (starts with 'X') must be listed after all
1025 * standard extensions. They must be separated from other multi-letter
1026 * extensions by an underscore.
1028 struct isa_ext_data isa_edata_arr[] = {
1029 ISA_EDATA_ENTRY(zfh, ext_zfh),
1030 ISA_EDATA_ENTRY(zfhmin, ext_zfhmin),
1031 ISA_EDATA_ENTRY(zfinx, ext_zfinx),
1032 ISA_EDATA_ENTRY(zdinx, ext_zdinx),
1033 ISA_EDATA_ENTRY(zba, ext_zba),
1034 ISA_EDATA_ENTRY(zbb, ext_zbb),
1035 ISA_EDATA_ENTRY(zbc, ext_zbc),
1036 ISA_EDATA_ENTRY(zbkb, ext_zbkb),
1037 ISA_EDATA_ENTRY(zbkc, ext_zbkc),
1038 ISA_EDATA_ENTRY(zbkx, ext_zbkx),
1039 ISA_EDATA_ENTRY(zbs, ext_zbs),
1040 ISA_EDATA_ENTRY(zk, ext_zk),
1041 ISA_EDATA_ENTRY(zkn, ext_zkn),
1042 ISA_EDATA_ENTRY(zknd, ext_zknd),
1043 ISA_EDATA_ENTRY(zkne, ext_zkne),
1044 ISA_EDATA_ENTRY(zknh, ext_zknh),
1045 ISA_EDATA_ENTRY(zkr, ext_zkr),
1046 ISA_EDATA_ENTRY(zks, ext_zks),
1047 ISA_EDATA_ENTRY(zksed, ext_zksed),
1048 ISA_EDATA_ENTRY(zksh, ext_zksh),
1049 ISA_EDATA_ENTRY(zkt, ext_zkt),
1050 ISA_EDATA_ENTRY(zve32f, ext_zve32f),
1051 ISA_EDATA_ENTRY(zve64f, ext_zve64f),
1052 ISA_EDATA_ENTRY(zhinx, ext_zhinx),
1053 ISA_EDATA_ENTRY(zhinxmin, ext_zhinxmin),
1054 ISA_EDATA_ENTRY(svinval, ext_svinval),
1055 ISA_EDATA_ENTRY(svnapot, ext_svnapot),
1056 ISA_EDATA_ENTRY(svpbmt, ext_svpbmt),
1059 for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
1060 if (isa_edata_arr[i].enabled) {
1061 new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL);
1070 char *riscv_isa_string(RISCVCPU *cpu)
1073 const size_t maxlen = sizeof("rv128") + sizeof(riscv_single_letter_exts);
1074 char *isa_str = g_new(char, maxlen);
1075 char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS);
1076 for (i = 0; i < sizeof(riscv_single_letter_exts) - 1; i++) {
1077 if (cpu->env.misa_ext & RV(riscv_single_letter_exts[i])) {
1078 *p++ = qemu_tolower(riscv_single_letter_exts[i]);
1082 if (!cpu->cfg.short_isa_string) {
1083 riscv_isa_string_ext(cpu, &isa_str, maxlen);
1088 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b)
1090 ObjectClass *class_a = (ObjectClass *)a;
1091 ObjectClass *class_b = (ObjectClass *)b;
1092 const char *name_a, *name_b;
1094 name_a = object_class_get_name(class_a);
1095 name_b = object_class_get_name(class_b);
1096 return strcmp(name_a, name_b);
1099 static void riscv_cpu_list_entry(gpointer data, gpointer user_data)
1101 const char *typename = object_class_get_name(OBJECT_CLASS(data));
1102 int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX);
1104 qemu_printf("%.*s\n", len, typename);
1107 void riscv_cpu_list(void)
1111 list = object_class_get_list(TYPE_RISCV_CPU, false);
1112 list = g_slist_sort(list, riscv_cpu_list_compare);
1113 g_slist_foreach(list, riscv_cpu_list_entry, NULL);
1117 #define DEFINE_CPU(type_name, initfn) \
1119 .name = type_name, \
1120 .parent = TYPE_RISCV_CPU, \
1121 .instance_init = initfn \
1124 static const TypeInfo riscv_cpu_type_infos[] = {
1126 .name = TYPE_RISCV_CPU,
1128 .instance_size = sizeof(RISCVCPU),
1129 .instance_align = __alignof__(RISCVCPU),
1130 .instance_init = riscv_cpu_init,
1132 .class_size = sizeof(RISCVCPUClass),
1133 .class_init = riscv_cpu_class_init,
1135 DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init),
1136 #if defined(CONFIG_KVM)
1137 DEFINE_CPU(TYPE_RISCV_CPU_HOST, riscv_host_cpu_init),
1139 #if defined(TARGET_RISCV32)
1140 DEFINE_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init),
1141 DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init),
1142 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init),
1143 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init),
1144 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init),
1145 #elif defined(TARGET_RISCV64)
1146 DEFINE_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init),
1147 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init),
1148 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init),
1149 DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init),
1150 DEFINE_CPU(TYPE_RISCV_CPU_BASE128, rv128_base_cpu_init),
1154 DEFINE_TYPES(riscv_cpu_type_infos)