Merge tag 'pull-la-20220606' of https://gitlab.com/rth7680/qemu into staging
[qemu/rayw.git] / target / riscv / cpu.c
bloba91253d4bd53b1766b5753feb202cc44bdfd4d0d
1 /*
2 * QEMU RISC-V CPU
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
14 * more details.
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"
23 #include "qemu/log.h"
24 #include "cpu.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) | \
39 (QEMU_VERSION_MICRO))
40 #define RISCV_CPU_MIMPID RISCV_CPU_MARCHID
42 static const char riscv_single_letter_exts[] = "IEMAFDQCPVH";
44 struct isa_ext_data {
45 const char *name;
46 bool enabled;
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[] = {
76 "misaligned_fetch",
77 "fault_fetch",
78 "illegal_instruction",
79 "breakpoint",
80 "misaligned_load",
81 "fault_load",
82 "misaligned_store",
83 "fault_store",
84 "user_ecall",
85 "supervisor_ecall",
86 "hypervisor_ecall",
87 "machine_ecall",
88 "exec_page_fault",
89 "load_page_fault",
90 "reserved",
91 "store_page_fault",
92 "reserved",
93 "reserved",
94 "reserved",
95 "reserved",
96 "guest_exec_page_fault",
97 "guest_load_page_fault",
98 "reserved",
99 "guest_store_page_fault",
102 static const char * const riscv_intr_names[] = {
103 "u_software",
104 "s_software",
105 "vs_software",
106 "m_software",
107 "u_timer",
108 "s_timer",
109 "vs_timer",
110 "m_timer",
111 "u_external",
112 "s_external",
113 "vs_external",
114 "m_external",
115 "reserved",
116 "reserved",
117 "reserved",
118 "reserved"
121 const char *riscv_cpu_get_trap_name(target_ulong cause, bool async)
123 if (async) {
124 return (cause < ARRAY_SIZE(riscv_intr_names)) ?
125 riscv_intr_names[cause] : "(unknown)";
126 } else {
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;
152 #endif
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);
162 #endif
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");
195 exit(EXIT_FAILURE);
197 CPURISCVState *env = &RISCV_CPU(obj)->env;
198 /* We set this in the realise function */
199 set_misa(env, MXL_RV128, 0);
201 #else
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);
241 #endif
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);
251 #endif
253 #endif
255 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model)
257 ObjectClass *oc;
258 char *typename;
259 char **cpuname;
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);
264 g_strfreev(cpuname);
265 g_free(typename);
266 if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) ||
267 object_class_is_abstract(oc)) {
268 return NULL;
270 return 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;
277 int i;
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));
283 #endif
284 qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc ", env->pc);
285 #ifndef CONFIG_USER_ONLY
287 static const int dump_csrs[] = {
288 CSR_MHARTID,
289 CSR_MSTATUS,
290 CSR_MSTATUSH,
291 CSR_HSTATUS,
292 CSR_VSSTATUS,
293 CSR_MIP,
294 CSR_MIE,
295 CSR_MIDELEG,
296 CSR_HIDELEG,
297 CSR_MEDELEG,
298 CSR_HEDELEG,
299 CSR_MTVEC,
300 CSR_STVEC,
301 CSR_VSTVEC,
302 CSR_MEPC,
303 CSR_SEPC,
304 CSR_VSEPC,
305 CSR_MCAUSE,
306 CSR_SCAUSE,
307 CSR_VSCAUSE,
308 CSR_MTVAL,
309 CSR_STVAL,
310 CSR_HTVAL,
311 CSR_MTVAL2,
312 CSR_MSCRATCH,
313 CSR_SSCRATCH,
314 CSR_SATP,
315 CSR_MMTE,
316 CSR_UPMBASE,
317 CSR_UPMMASK,
318 CSR_SPMBASE,
319 CSR_SPMMASK,
320 CSR_MPMBASE,
321 CSR_MPMMASK,
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);
339 #endif
341 for (i = 0; i < 32; i++) {
342 qemu_fprintf(f, " %-8s " TARGET_FMT_lx,
343 riscv_int_regnames[i], env->gpr[i]);
344 if ((i & 3) == 3) {
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]);
352 if ((i & 3) == 3) {
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;
366 } else {
367 env->pc = 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;
380 } else {
381 env->pc = 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;
395 #else
396 return true;
397 #endif
400 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
401 target_ulong *data)
403 RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL);
404 if (xl == MXL_RV32) {
405 env->pc = (int32_t)data[0];
406 } else {
407 env->pc = data[0];
409 env->bins = data[1];
412 static void riscv_cpu_reset(DeviceState *dev)
414 #ifndef CONFIG_USER_ONLY
415 uint8_t iprio;
416 int i, irq, rdzero;
417 #endif
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;
426 env->priv = PRV_M;
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);
446 env->mcause = 0;
447 env->miclaim = MIP_SGEIP;
448 env->pc = env->resetvec;
449 env->bins = 0;
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;
457 env->hviprio[i] = 0;
459 i = 0;
460 while (!riscv_cpu_hviprio_index2irq(i, &irq, &rdzero)) {
461 if (!rdzero) {
462 env->hviprio[irq] = env->miprio[irq];
464 i++;
466 /* mmte is supposed to have pm.current hardwired to 1 */
467 env->mmte |= (PM_EXT_INITIAL | MMTE_M_PM_CURRENT);
468 #endif
469 env->xl = riscv_cpu_mxl(env);
470 riscv_cpu_update_mask(env);
471 cs->exception_index = RISCV_EXCP_NONE;
472 env->load_res = -1;
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);
480 if (kvm_enabled()) {
481 kvm_riscv_reset_vcpu(cpu);
483 #endif
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)) {
491 case MXL_RV32:
492 info->print_insn = print_insn_riscv32;
493 break;
494 case MXL_RV64:
495 info->print_insn = print_insn_riscv64;
496 break;
497 case MXL_RV128:
498 info->print_insn = print_insn_riscv128;
499 break;
500 default:
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);
518 return;
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;
528 } else {
529 error_setg(errp,
530 "Unsupported privilege spec version '%s'",
531 cpu->cfg.priv_spec);
532 return;
536 if (priv_version) {
537 set_priv_version(env, priv_version);
538 } else if (!env->priv_ver) {
539 set_priv_version(env, PRIV_VERSION_1_12_0);
542 if (cpu->cfg.mmu) {
543 riscv_set_feature(env, RISCV_FEATURE_MMU);
546 if (cpu->cfg.pmp) {
547 riscv_set_feature(env, RISCV_FEATURE_PMP);
550 * Enhanced PMP should only be available
551 * on harts with PMP support
553 if (cpu->cfg.epmp) {
554 riscv_set_feature(env, RISCV_FEATURE_EPMP);
558 if (cpu->cfg.aia) {
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
571 case MXL_RV64:
572 case MXL_RV128:
573 cc->gdb_core_xml_file = "riscv-64bit-cpu.xml";
574 break;
575 #endif
576 case MXL_RV32:
577 cc->gdb_core_xml_file = "riscv-32bit-cpu.xml";
578 break;
579 default:
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) {
586 uint32_t 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 &&
591 cpu->cfg.ext_d &&
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) {
604 error_setg(errp,
605 "I and E extensions are incompatible");
606 return;
609 if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) {
610 error_setg(errp,
611 "Either I or E extension must be set");
612 return;
615 if (cpu->cfg.ext_f && !cpu->cfg.ext_icsr) {
616 error_setg(errp, "F extension requires Zicsr");
617 return;
620 if ((cpu->cfg.ext_zfh || cpu->cfg.ext_zfhmin) && !cpu->cfg.ext_f) {
621 error_setg(errp, "Zfh/Zfhmin extensions require F extension");
622 return;
625 if (cpu->cfg.ext_d && !cpu->cfg.ext_f) {
626 error_setg(errp, "D extension requires F extension");
627 return;
630 if (cpu->cfg.ext_v && !cpu->cfg.ext_d) {
631 error_setg(errp, "V extension requires D extension");
632 return;
635 if ((cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) && !cpu->cfg.ext_f) {
636 error_setg(errp, "Zve32f/Zve64f extensions require F extension");
637 return;
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");
649 return;
651 if (cpu->cfg.ext_f) {
652 error_setg(errp,
653 "Zfinx cannot be supported together with F extension");
654 return;
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) {
682 ext |= RVI;
684 if (cpu->cfg.ext_e) {
685 ext |= RVE;
687 if (cpu->cfg.ext_m) {
688 ext |= RVM;
690 if (cpu->cfg.ext_a) {
691 ext |= RVA;
693 if (cpu->cfg.ext_f) {
694 ext |= RVF;
696 if (cpu->cfg.ext_d) {
697 ext |= RVD;
699 if (cpu->cfg.ext_c) {
700 ext |= RVC;
702 if (cpu->cfg.ext_s) {
703 ext |= RVS;
705 if (cpu->cfg.ext_u) {
706 ext |= RVU;
708 if (cpu->cfg.ext_h) {
709 ext |= RVH;
711 if (cpu->cfg.ext_v) {
712 int vext_version = VEXT_VERSION_1_00_0;
713 ext |= RVV;
714 if (!is_power_of_2(cpu->cfg.vlen)) {
715 error_setg(errp,
716 "Vector extension VLEN must be power of 2");
717 return;
719 if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) {
720 error_setg(errp,
721 "Vector extension implementation only supports VLEN "
722 "in the range [128, %d]", RV_VLEN_MAX);
723 return;
725 if (!is_power_of_2(cpu->cfg.elen)) {
726 error_setg(errp,
727 "Vector extension ELEN must be power of 2");
728 return;
730 if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) {
731 error_setg(errp,
732 "Vector extension implementation only supports ELEN "
733 "in the range [8, 64]");
734 return;
736 if (cpu->cfg.vext_spec) {
737 if (!g_strcmp0(cpu->cfg.vext_spec, "v1.0")) {
738 vext_version = VEXT_VERSION_1_00_0;
739 } else {
740 error_setg(errp,
741 "Unsupported vector spec version '%s'",
742 cpu->cfg.vext_spec);
743 return;
745 } else {
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) {
752 ext |= RVJ;
755 set_misa(env, env->misa_mxl, ext);
758 riscv_cpu_register_gdb_regs_for_features(cs);
760 qemu_init_vcpu(cs);
761 cpu_reset(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) {
773 switch (irq) {
774 case IRQ_U_SOFT:
775 case IRQ_S_SOFT:
776 case IRQ_VS_SOFT:
777 case IRQ_M_SOFT:
778 case IRQ_U_TIMER:
779 case IRQ_S_TIMER:
780 case IRQ_VS_TIMER:
781 case IRQ_M_TIMER:
782 case IRQ_U_EXT:
783 case IRQ_VS_EXT:
784 case IRQ_M_EXT:
785 if (kvm_enabled()) {
786 kvm_riscv_set_irq(cpu, irq, level);
787 } else {
788 riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level));
790 break;
791 case IRQ_S_EXT:
792 if (kvm_enabled()) {
793 kvm_riscv_set_irq(cpu, irq, level);
794 } else {
795 env->external_seip = level;
796 riscv_cpu_update_mip(cpu, 1 << irq,
797 BOOL_TO_MASK(level | env->software_seip));
799 break;
800 default:
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);
817 if (level) {
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)));
824 } else {
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),
908 /* ePMP 0.9.3 */
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)) {
924 case MXL_RV32:
925 return g_strdup("riscv:rv32");
926 case MXL_RV64:
927 case MXL_RV128:
928 return g_strdup("riscv:rv64");
929 default:
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;
944 return NULL;
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,
956 #endif
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;
998 #endif
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;
1012 int i;
1015 * Here are the ordering rules of extension naming defined by RISC-V
1016 * specification :
1017 * 1. All extensions should be separated from other multi-letter extensions
1018 * by an underscore.
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
1026 * alphabetically.
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);
1067 g_free(old);
1068 old = new;
1072 *isa_str = new;
1075 char *riscv_isa_string(RISCVCPU *cpu)
1077 int i;
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]);
1086 *p = '\0';
1087 if (!cpu->cfg.short_isa_string) {
1088 riscv_isa_string_ext(cpu, &isa_str, maxlen);
1090 return isa_str;
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)
1114 GSList *list;
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);
1119 g_slist_free(list);
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,
1132 .parent = TYPE_CPU,
1133 .instance_size = sizeof(RISCVCPU),
1134 .instance_align = __alignof__(RISCVCPU),
1135 .instance_init = riscv_cpu_init,
1136 .abstract = true,
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),
1143 #endif
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),
1156 #endif
1159 DEFINE_TYPES(riscv_cpu_type_infos)