1 /* 2 * QEMU RISC-V CPU 3 * 4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu 5 * Copyright (c) 2017-2018 SiFive, Inc. 6 * 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. 10 * 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. 15 * 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/>. 18 */ 19 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 33 /* RISC-V CPU definitions */ 34 35 static const char riscv_exts[26] = "IEMAFDQCLBJTPVNSUHKORWXYZG"; 36 37 const char * const riscv_int_regnames[] = { 38 "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", 39 "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", 40 "x14/a4", "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3", "x20/s4", 41 "x21/s5", "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11", 42 "x28/t3", "x29/t4", "x30/t5", "x31/t6" 43 }; 44 45 const char * const riscv_fpr_regnames[] = { 46 "f0/ft0", "f1/ft1", "f2/ft2", "f3/ft3", "f4/ft4", "f5/ft5", 47 "f6/ft6", "f7/ft7", "f8/fs0", "f9/fs1", "f10/fa0", "f11/fa1", 48 "f12/fa2", "f13/fa3", "f14/fa4", "f15/fa5", "f16/fa6", "f17/fa7", 49 "f18/fs2", "f19/fs3", "f20/fs4", "f21/fs5", "f22/fs6", "f23/fs7", 50 "f24/fs8", "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9", 51 "f30/ft10", "f31/ft11" 52 }; 53 54 static const char * const riscv_excp_names[] = { 55 "misaligned_fetch", 56 "fault_fetch", 57 "illegal_instruction", 58 "breakpoint", 59 "misaligned_load", 60 "fault_load", 61 "misaligned_store", 62 "fault_store", 63 "user_ecall", 64 "supervisor_ecall", 65 "hypervisor_ecall", 66 "machine_ecall", 67 "exec_page_fault", 68 "load_page_fault", 69 "reserved", 70 "store_page_fault", 71 "reserved", 72 "reserved", 73 "reserved", 74 "reserved", 75 "guest_exec_page_fault", 76 "guest_load_page_fault", 77 "reserved", 78 "guest_store_page_fault", 79 }; 80 81 static const char * const riscv_intr_names[] = { 82 "u_software", 83 "s_software", 84 "vs_software", 85 "m_software", 86 "u_timer", 87 "s_timer", 88 "vs_timer", 89 "m_timer", 90 "u_external", 91 "s_external", 92 "vs_external", 93 "m_external", 94 "reserved", 95 "reserved", 96 "reserved", 97 "reserved" 98 }; 99 100 const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) 101 { 102 if (async) { 103 return (cause < ARRAY_SIZE(riscv_intr_names)) ? 104 riscv_intr_names[cause] : "(unknown)"; 105 } else { 106 return (cause < ARRAY_SIZE(riscv_excp_names)) ? 107 riscv_excp_names[cause] : "(unknown)"; 108 } 109 } 110 111 static void set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext) 112 { 113 env->misa_mxl_max = env->misa_mxl = mxl; 114 env->misa_ext_mask = env->misa_ext = ext; 115 } 116 117 static void set_priv_version(CPURISCVState *env, int priv_ver) 118 { 119 env->priv_ver = priv_ver; 120 } 121 122 static void set_vext_version(CPURISCVState *env, int vext_ver) 123 { 124 env->vext_ver = vext_ver; 125 } 126 127 static void set_feature(CPURISCVState *env, int feature) 128 { 129 env->features |= (1ULL << feature); 130 } 131 132 static void set_resetvec(CPURISCVState *env, target_ulong resetvec) 133 { 134 #ifndef CONFIG_USER_ONLY 135 env->resetvec = resetvec; 136 #endif 137 } 138 139 static void riscv_any_cpu_init(Object *obj) 140 { 141 CPURISCVState *env = &RISCV_CPU(obj)->env; 142 #if defined(TARGET_RISCV32) 143 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU); 144 #elif defined(TARGET_RISCV64) 145 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); 146 #endif 147 set_priv_version(env, PRIV_VERSION_1_11_0); 148 } 149 150 #if defined(TARGET_RISCV64) 151 static void rv64_base_cpu_init(Object *obj) 152 { 153 CPURISCVState *env = &RISCV_CPU(obj)->env; 154 /* We set this in the realise function */ 155 set_misa(env, MXL_RV64, 0); 156 } 157 158 static void rv64_sifive_u_cpu_init(Object *obj) 159 { 160 CPURISCVState *env = &RISCV_CPU(obj)->env; 161 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); 162 set_priv_version(env, PRIV_VERSION_1_10_0); 163 } 164 165 static void rv64_sifive_e_cpu_init(Object *obj) 166 { 167 CPURISCVState *env = &RISCV_CPU(obj)->env; 168 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU); 169 set_priv_version(env, PRIV_VERSION_1_10_0); 170 qdev_prop_set_bit(DEVICE(obj), "mmu", false); 171 } 172 #else 173 static void rv32_base_cpu_init(Object *obj) 174 { 175 CPURISCVState *env = &RISCV_CPU(obj)->env; 176 /* We set this in the realise function */ 177 set_misa(env, MXL_RV32, 0); 178 } 179 180 static void rv32_sifive_u_cpu_init(Object *obj) 181 { 182 CPURISCVState *env = &RISCV_CPU(obj)->env; 183 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); 184 set_priv_version(env, PRIV_VERSION_1_10_0); 185 } 186 187 static void rv32_sifive_e_cpu_init(Object *obj) 188 { 189 CPURISCVState *env = &RISCV_CPU(obj)->env; 190 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU); 191 set_priv_version(env, PRIV_VERSION_1_10_0); 192 qdev_prop_set_bit(DEVICE(obj), "mmu", false); 193 } 194 195 static void rv32_ibex_cpu_init(Object *obj) 196 { 197 CPURISCVState *env = &RISCV_CPU(obj)->env; 198 set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU); 199 set_priv_version(env, PRIV_VERSION_1_10_0); 200 qdev_prop_set_bit(DEVICE(obj), "mmu", false); 201 qdev_prop_set_bit(DEVICE(obj), "x-epmp", true); 202 } 203 204 static void rv32_imafcu_nommu_cpu_init(Object *obj) 205 { 206 CPURISCVState *env = &RISCV_CPU(obj)->env; 207 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU); 208 set_priv_version(env, PRIV_VERSION_1_10_0); 209 set_resetvec(env, DEFAULT_RSTVEC); 210 qdev_prop_set_bit(DEVICE(obj), "mmu", false); 211 } 212 #endif 213 214 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model) 215 { 216 ObjectClass *oc; 217 char *typename; 218 char **cpuname; 219 220 cpuname = g_strsplit(cpu_model, ",", 1); 221 typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]); 222 oc = object_class_by_name(typename); 223 g_strfreev(cpuname); 224 g_free(typename); 225 if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) || 226 object_class_is_abstract(oc)) { 227 return NULL; 228 } 229 return oc; 230 } 231 232 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags) 233 { 234 RISCVCPU *cpu = RISCV_CPU(cs); 235 CPURISCVState *env = &cpu->env; 236 int i; 237 238 #if !defined(CONFIG_USER_ONLY) 239 if (riscv_has_ext(env, RVH)) { 240 qemu_fprintf(f, " %s %d\n", "V = ", riscv_cpu_virt_enabled(env)); 241 } 242 #endif 243 qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc ", env->pc); 244 #ifndef CONFIG_USER_ONLY 245 { 246 static const int dump_csrs[] = { 247 CSR_MHARTID, 248 CSR_MSTATUS, 249 CSR_MSTATUSH, 250 CSR_HSTATUS, 251 CSR_VSSTATUS, 252 CSR_MIP, 253 CSR_MIE, 254 CSR_MIDELEG, 255 CSR_HIDELEG, 256 CSR_MEDELEG, 257 CSR_HEDELEG, 258 CSR_MTVEC, 259 CSR_STVEC, 260 CSR_VSTVEC, 261 CSR_MEPC, 262 CSR_SEPC, 263 CSR_VSEPC, 264 CSR_MCAUSE, 265 CSR_SCAUSE, 266 CSR_VSCAUSE, 267 CSR_MTVAL, 268 CSR_STVAL, 269 CSR_HTVAL, 270 CSR_MTVAL2, 271 CSR_MSCRATCH, 272 CSR_SSCRATCH, 273 CSR_SATP, 274 }; 275 276 for (int i = 0; i < ARRAY_SIZE(dump_csrs); ++i) { 277 int csrno = dump_csrs[i]; 278 target_ulong val = 0; 279 RISCVException res = riscv_csrrw_debug(env, csrno, &val, 0, 0); 280 281 /* 282 * Rely on the smode, hmode, etc, predicates within csr.c 283 * to do the filtering of the registers that are present. 284 */ 285 if (res == RISCV_EXCP_NONE) { 286 qemu_fprintf(f, " %-8s " TARGET_FMT_lx "\n", 287 csr_ops[csrno].name, val); 288 } 289 } 290 } 291 #endif 292 293 for (i = 0; i < 32; i++) { 294 qemu_fprintf(f, " %-8s " TARGET_FMT_lx, 295 riscv_int_regnames[i], env->gpr[i]); 296 if ((i & 3) == 3) { 297 qemu_fprintf(f, "\n"); 298 } 299 } 300 if (flags & CPU_DUMP_FPU) { 301 for (i = 0; i < 32; i++) { 302 qemu_fprintf(f, " %-8s %016" PRIx64, 303 riscv_fpr_regnames[i], env->fpr[i]); 304 if ((i & 3) == 3) { 305 qemu_fprintf(f, "\n"); 306 } 307 } 308 } 309 } 310 311 static void riscv_cpu_set_pc(CPUState *cs, vaddr value) 312 { 313 RISCVCPU *cpu = RISCV_CPU(cs); 314 CPURISCVState *env = &cpu->env; 315 env->pc = value; 316 } 317 318 static void riscv_cpu_synchronize_from_tb(CPUState *cs, 319 const TranslationBlock *tb) 320 { 321 RISCVCPU *cpu = RISCV_CPU(cs); 322 CPURISCVState *env = &cpu->env; 323 env->pc = tb->pc; 324 } 325 326 static bool riscv_cpu_has_work(CPUState *cs) 327 { 328 #ifndef CONFIG_USER_ONLY 329 RISCVCPU *cpu = RISCV_CPU(cs); 330 CPURISCVState *env = &cpu->env; 331 /* 332 * Definition of the WFI instruction requires it to ignore the privilege 333 * mode and delegation registers, but respect individual enables 334 */ 335 return (env->mip & env->mie) != 0; 336 #else 337 return true; 338 #endif 339 } 340 341 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb, 342 target_ulong *data) 343 { 344 env->pc = data[0]; 345 } 346 347 static void riscv_cpu_reset(DeviceState *dev) 348 { 349 CPUState *cs = CPU(dev); 350 RISCVCPU *cpu = RISCV_CPU(cs); 351 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu); 352 CPURISCVState *env = &cpu->env; 353 354 mcc->parent_reset(dev); 355 #ifndef CONFIG_USER_ONLY 356 env->misa_mxl = env->misa_mxl_max; 357 env->priv = PRV_M; 358 env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV); 359 if (env->misa_mxl > MXL_RV32) { 360 /* 361 * The reset status of SXL/UXL is undefined, but mstatus is WARL 362 * and we must ensure that the value after init is valid for read. 363 */ 364 env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl); 365 env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl); 366 } 367 env->mcause = 0; 368 env->pc = env->resetvec; 369 env->two_stage_lookup = false; 370 #endif 371 cs->exception_index = RISCV_EXCP_NONE; 372 env->load_res = -1; 373 set_default_nan_mode(1, &env->fp_status); 374 } 375 376 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) 377 { 378 RISCVCPU *cpu = RISCV_CPU(s); 379 380 switch (riscv_cpu_mxl(&cpu->env)) { 381 case MXL_RV32: 382 info->print_insn = print_insn_riscv32; 383 break; 384 case MXL_RV64: 385 info->print_insn = print_insn_riscv64; 386 break; 387 default: 388 g_assert_not_reached(); 389 } 390 } 391 392 static void riscv_cpu_realize(DeviceState *dev, Error **errp) 393 { 394 CPUState *cs = CPU(dev); 395 RISCVCPU *cpu = RISCV_CPU(dev); 396 CPURISCVState *env = &cpu->env; 397 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev); 398 int priv_version = 0; 399 Error *local_err = NULL; 400 401 cpu_exec_realizefn(cs, &local_err); 402 if (local_err != NULL) { 403 error_propagate(errp, local_err); 404 return; 405 } 406 407 if (cpu->cfg.priv_spec) { 408 if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { 409 priv_version = PRIV_VERSION_1_11_0; 410 } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { 411 priv_version = PRIV_VERSION_1_10_0; 412 } else { 413 error_setg(errp, 414 "Unsupported privilege spec version '%s'", 415 cpu->cfg.priv_spec); 416 return; 417 } 418 } 419 420 if (priv_version) { 421 set_priv_version(env, priv_version); 422 } else if (!env->priv_ver) { 423 set_priv_version(env, PRIV_VERSION_1_11_0); 424 } 425 426 if (cpu->cfg.mmu) { 427 set_feature(env, RISCV_FEATURE_MMU); 428 } 429 430 if (cpu->cfg.pmp) { 431 set_feature(env, RISCV_FEATURE_PMP); 432 433 /* 434 * Enhanced PMP should only be available 435 * on harts with PMP support 436 */ 437 if (cpu->cfg.epmp) { 438 set_feature(env, RISCV_FEATURE_EPMP); 439 } 440 } 441 442 set_resetvec(env, cpu->cfg.resetvec); 443 444 /* Validate that MISA_MXL is set properly. */ 445 switch (env->misa_mxl_max) { 446 #ifdef TARGET_RISCV64 447 case MXL_RV64: 448 break; 449 #endif 450 case MXL_RV32: 451 break; 452 default: 453 g_assert_not_reached(); 454 } 455 assert(env->misa_mxl_max == env->misa_mxl); 456 457 /* If only MISA_EXT is unset for misa, then set it from properties */ 458 if (env->misa_ext == 0) { 459 uint32_t ext = 0; 460 461 /* Do some ISA extension error checking */ 462 if (cpu->cfg.ext_i && cpu->cfg.ext_e) { 463 error_setg(errp, 464 "I and E extensions are incompatible"); 465 return; 466 } 467 468 if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) { 469 error_setg(errp, 470 "Either I or E extension must be set"); 471 return; 472 } 473 474 if (cpu->cfg.ext_g && !(cpu->cfg.ext_i & cpu->cfg.ext_m & 475 cpu->cfg.ext_a & cpu->cfg.ext_f & 476 cpu->cfg.ext_d)) { 477 warn_report("Setting G will also set IMAFD"); 478 cpu->cfg.ext_i = true; 479 cpu->cfg.ext_m = true; 480 cpu->cfg.ext_a = true; 481 cpu->cfg.ext_f = true; 482 cpu->cfg.ext_d = true; 483 } 484 485 /* Set the ISA extensions, checks should have happened above */ 486 if (cpu->cfg.ext_i) { 487 ext |= RVI; 488 } 489 if (cpu->cfg.ext_e) { 490 ext |= RVE; 491 } 492 if (cpu->cfg.ext_m) { 493 ext |= RVM; 494 } 495 if (cpu->cfg.ext_a) { 496 ext |= RVA; 497 } 498 if (cpu->cfg.ext_f) { 499 ext |= RVF; 500 } 501 if (cpu->cfg.ext_d) { 502 ext |= RVD; 503 } 504 if (cpu->cfg.ext_c) { 505 ext |= RVC; 506 } 507 if (cpu->cfg.ext_s) { 508 ext |= RVS; 509 } 510 if (cpu->cfg.ext_u) { 511 ext |= RVU; 512 } 513 if (cpu->cfg.ext_h) { 514 ext |= RVH; 515 } 516 if (cpu->cfg.ext_v) { 517 int vext_version = VEXT_VERSION_0_07_1; 518 ext |= RVV; 519 if (!is_power_of_2(cpu->cfg.vlen)) { 520 error_setg(errp, 521 "Vector extension VLEN must be power of 2"); 522 return; 523 } 524 if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) { 525 error_setg(errp, 526 "Vector extension implementation only supports VLEN " 527 "in the range [128, %d]", RV_VLEN_MAX); 528 return; 529 } 530 if (!is_power_of_2(cpu->cfg.elen)) { 531 error_setg(errp, 532 "Vector extension ELEN must be power of 2"); 533 return; 534 } 535 if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) { 536 error_setg(errp, 537 "Vector extension implementation only supports ELEN " 538 "in the range [8, 64]"); 539 return; 540 } 541 if (cpu->cfg.vext_spec) { 542 if (!g_strcmp0(cpu->cfg.vext_spec, "v0.7.1")) { 543 vext_version = VEXT_VERSION_0_07_1; 544 } else { 545 error_setg(errp, 546 "Unsupported vector spec version '%s'", 547 cpu->cfg.vext_spec); 548 return; 549 } 550 } else { 551 qemu_log("vector version is not specified, " 552 "use the default value v0.7.1\n"); 553 } 554 set_vext_version(env, vext_version); 555 } 556 557 set_misa(env, env->misa_mxl, ext); 558 } 559 560 riscv_cpu_register_gdb_regs_for_features(cs); 561 562 qemu_init_vcpu(cs); 563 cpu_reset(cs); 564 565 mcc->parent_realize(dev, errp); 566 } 567 568 #ifndef CONFIG_USER_ONLY 569 static void riscv_cpu_set_irq(void *opaque, int irq, int level) 570 { 571 RISCVCPU *cpu = RISCV_CPU(opaque); 572 573 switch (irq) { 574 case IRQ_U_SOFT: 575 case IRQ_S_SOFT: 576 case IRQ_VS_SOFT: 577 case IRQ_M_SOFT: 578 case IRQ_U_TIMER: 579 case IRQ_S_TIMER: 580 case IRQ_VS_TIMER: 581 case IRQ_M_TIMER: 582 case IRQ_U_EXT: 583 case IRQ_S_EXT: 584 case IRQ_VS_EXT: 585 case IRQ_M_EXT: 586 riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level)); 587 break; 588 default: 589 g_assert_not_reached(); 590 } 591 } 592 #endif /* CONFIG_USER_ONLY */ 593 594 static void riscv_cpu_init(Object *obj) 595 { 596 RISCVCPU *cpu = RISCV_CPU(obj); 597 598 cpu_set_cpustate_pointers(cpu); 599 600 #ifndef CONFIG_USER_ONLY 601 qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12); 602 #endif /* CONFIG_USER_ONLY */ 603 } 604 605 static Property riscv_cpu_properties[] = { 606 /* Defaults for standard extensions */ 607 DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true), 608 DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false), 609 DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, true), 610 DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true), 611 DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true), 612 DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true), 613 DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true), 614 DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true), 615 DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true), 616 DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true), 617 DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true), 618 DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), 619 DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), 620 DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), 621 DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), 622 623 DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), 624 625 /* These are experimental so mark with 'x-' */ 626 DEFINE_PROP_BOOL("x-zba", RISCVCPU, cfg.ext_zba, false), 627 DEFINE_PROP_BOOL("x-zbb", RISCVCPU, cfg.ext_zbb, false), 628 DEFINE_PROP_BOOL("x-zbc", RISCVCPU, cfg.ext_zbc, false), 629 DEFINE_PROP_BOOL("x-zbs", RISCVCPU, cfg.ext_zbs, false), 630 DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false), 631 DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false), 632 DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), 633 DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), 634 DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), 635 /* ePMP 0.9.3 */ 636 DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), 637 638 DEFINE_PROP_UINT64("resetvec", RISCVCPU, cfg.resetvec, DEFAULT_RSTVEC), 639 DEFINE_PROP_END_OF_LIST(), 640 }; 641 642 static gchar *riscv_gdb_arch_name(CPUState *cs) 643 { 644 RISCVCPU *cpu = RISCV_CPU(cs); 645 CPURISCVState *env = &cpu->env; 646 647 switch (riscv_cpu_mxl(env)) { 648 case MXL_RV32: 649 return g_strdup("riscv:rv32"); 650 case MXL_RV64: 651 return g_strdup("riscv:rv64"); 652 default: 653 g_assert_not_reached(); 654 } 655 } 656 657 static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname) 658 { 659 RISCVCPU *cpu = RISCV_CPU(cs); 660 661 if (strcmp(xmlname, "riscv-csr.xml") == 0) { 662 return cpu->dyn_csr_xml; 663 } 664 665 return NULL; 666 } 667 668 #ifndef CONFIG_USER_ONLY 669 #include "hw/core/sysemu-cpu-ops.h" 670 671 static const struct SysemuCPUOps riscv_sysemu_ops = { 672 .get_phys_page_debug = riscv_cpu_get_phys_page_debug, 673 .write_elf64_note = riscv_cpu_write_elf64_note, 674 .write_elf32_note = riscv_cpu_write_elf32_note, 675 .legacy_vmsd = &vmstate_riscv_cpu, 676 }; 677 #endif 678 679 #include "hw/core/tcg-cpu-ops.h" 680 681 static const struct TCGCPUOps riscv_tcg_ops = { 682 .initialize = riscv_translate_init, 683 .synchronize_from_tb = riscv_cpu_synchronize_from_tb, 684 .tlb_fill = riscv_cpu_tlb_fill, 685 686 #ifndef CONFIG_USER_ONLY 687 .cpu_exec_interrupt = riscv_cpu_exec_interrupt, 688 .do_interrupt = riscv_cpu_do_interrupt, 689 .do_transaction_failed = riscv_cpu_do_transaction_failed, 690 .do_unaligned_access = riscv_cpu_do_unaligned_access, 691 #endif /* !CONFIG_USER_ONLY */ 692 }; 693 694 static void riscv_cpu_class_init(ObjectClass *c, void *data) 695 { 696 RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); 697 CPUClass *cc = CPU_CLASS(c); 698 DeviceClass *dc = DEVICE_CLASS(c); 699 700 device_class_set_parent_realize(dc, riscv_cpu_realize, 701 &mcc->parent_realize); 702 703 device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset); 704 705 cc->class_by_name = riscv_cpu_class_by_name; 706 cc->has_work = riscv_cpu_has_work; 707 cc->dump_state = riscv_cpu_dump_state; 708 cc->set_pc = riscv_cpu_set_pc; 709 cc->gdb_read_register = riscv_cpu_gdb_read_register; 710 cc->gdb_write_register = riscv_cpu_gdb_write_register; 711 cc->gdb_num_core_regs = 33; 712 #if defined(TARGET_RISCV32) 713 cc->gdb_core_xml_file = "riscv-32bit-cpu.xml"; 714 #elif defined(TARGET_RISCV64) 715 cc->gdb_core_xml_file = "riscv-64bit-cpu.xml"; 716 #endif 717 cc->gdb_stop_before_watchpoint = true; 718 cc->disas_set_info = riscv_cpu_disas_set_info; 719 #ifndef CONFIG_USER_ONLY 720 cc->sysemu_ops = &riscv_sysemu_ops; 721 #endif 722 cc->gdb_arch_name = riscv_gdb_arch_name; 723 cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml; 724 cc->tcg_ops = &riscv_tcg_ops; 725 726 device_class_set_props(dc, riscv_cpu_properties); 727 } 728 729 char *riscv_isa_string(RISCVCPU *cpu) 730 { 731 int i; 732 const size_t maxlen = sizeof("rv128") + sizeof(riscv_exts) + 1; 733 char *isa_str = g_new(char, maxlen); 734 char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS); 735 for (i = 0; i < sizeof(riscv_exts); i++) { 736 if (cpu->env.misa_ext & RV(riscv_exts[i])) { 737 *p++ = qemu_tolower(riscv_exts[i]); 738 } 739 } 740 *p = '\0'; 741 return isa_str; 742 } 743 744 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b) 745 { 746 ObjectClass *class_a = (ObjectClass *)a; 747 ObjectClass *class_b = (ObjectClass *)b; 748 const char *name_a, *name_b; 749 750 name_a = object_class_get_name(class_a); 751 name_b = object_class_get_name(class_b); 752 return strcmp(name_a, name_b); 753 } 754 755 static void riscv_cpu_list_entry(gpointer data, gpointer user_data) 756 { 757 const char *typename = object_class_get_name(OBJECT_CLASS(data)); 758 int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX); 759 760 qemu_printf("%.*s\n", len, typename); 761 } 762 763 void riscv_cpu_list(void) 764 { 765 GSList *list; 766 767 list = object_class_get_list(TYPE_RISCV_CPU, false); 768 list = g_slist_sort(list, riscv_cpu_list_compare); 769 g_slist_foreach(list, riscv_cpu_list_entry, NULL); 770 g_slist_free(list); 771 } 772 773 #define DEFINE_CPU(type_name, initfn) \ 774 { \ 775 .name = type_name, \ 776 .parent = TYPE_RISCV_CPU, \ 777 .instance_init = initfn \ 778 } 779 780 static const TypeInfo riscv_cpu_type_infos[] = { 781 { 782 .name = TYPE_RISCV_CPU, 783 .parent = TYPE_CPU, 784 .instance_size = sizeof(RISCVCPU), 785 .instance_align = __alignof__(RISCVCPU), 786 .instance_init = riscv_cpu_init, 787 .abstract = true, 788 .class_size = sizeof(RISCVCPUClass), 789 .class_init = riscv_cpu_class_init, 790 }, 791 DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), 792 #if defined(TARGET_RISCV32) 793 DEFINE_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init), 794 DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init), 795 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init), 796 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init), 797 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init), 798 #elif defined(TARGET_RISCV64) 799 DEFINE_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init), 800 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init), 801 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init), 802 DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init), 803 #endif 804 }; 805 806 DEFINE_TYPES(riscv_cpu_type_infos) 807