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 "pmu.h" 26 #include "internals.h" 27 #include "time_helper.h" 28 #include "exec/exec-all.h" 29 #include "qapi/error.h" 30 #include "qemu/error-report.h" 31 #include "hw/qdev-properties.h" 32 #include "migration/vmstate.h" 33 #include "fpu/softfloat-helpers.h" 34 #include "sysemu/kvm.h" 35 #include "kvm_riscv.h" 36 37 /* RISC-V CPU definitions */ 38 39 #define RISCV_CPU_MARCHID ((QEMU_VERSION_MAJOR << 16) | \ 40 (QEMU_VERSION_MINOR << 8) | \ 41 (QEMU_VERSION_MICRO)) 42 #define RISCV_CPU_MIMPID RISCV_CPU_MARCHID 43 44 static const char riscv_single_letter_exts[] = "IEMAFDQCPVH"; 45 46 struct isa_ext_data { 47 const char *name; 48 bool multi_letter; 49 int min_version; 50 int ext_enable_offset; 51 }; 52 53 #define ISA_EXT_DATA_ENTRY(_name, _m_letter, _min_ver, _prop) \ 54 {#_name, _m_letter, _min_ver, offsetof(struct RISCVCPUConfig, _prop)} 55 56 /** 57 * Here are the ordering rules of extension naming defined by RISC-V 58 * specification : 59 * 1. All extensions should be separated from other multi-letter extensions 60 * by an underscore. 61 * 2. The first letter following the 'Z' conventionally indicates the most 62 * closely related alphabetical extension category, IMAFDQLCBKJTPVH. 63 * If multiple 'Z' extensions are named, they should be ordered first 64 * by category, then alphabetically within a category. 65 * 3. Standard supervisor-level extensions (starts with 'S') should be 66 * listed after standard unprivileged extensions. If multiple 67 * supervisor-level extensions are listed, they should be ordered 68 * alphabetically. 69 * 4. Non-standard extensions (starts with 'X') must be listed after all 70 * standard extensions. They must be separated from other multi-letter 71 * extensions by an underscore. 72 */ 73 static const struct isa_ext_data isa_edata_arr[] = { 74 ISA_EXT_DATA_ENTRY(h, false, PRIV_VERSION_1_12_0, ext_h), 75 ISA_EXT_DATA_ENTRY(v, false, PRIV_VERSION_1_12_0, ext_v), 76 ISA_EXT_DATA_ENTRY(zicsr, true, PRIV_VERSION_1_10_0, ext_icsr), 77 ISA_EXT_DATA_ENTRY(zifencei, true, PRIV_VERSION_1_10_0, ext_ifencei), 78 ISA_EXT_DATA_ENTRY(zihintpause, true, PRIV_VERSION_1_10_0, ext_zihintpause), 79 ISA_EXT_DATA_ENTRY(zfh, true, PRIV_VERSION_1_12_0, ext_zfh), 80 ISA_EXT_DATA_ENTRY(zfhmin, true, PRIV_VERSION_1_12_0, ext_zfhmin), 81 ISA_EXT_DATA_ENTRY(zfinx, true, PRIV_VERSION_1_12_0, ext_zfinx), 82 ISA_EXT_DATA_ENTRY(zdinx, true, PRIV_VERSION_1_12_0, ext_zdinx), 83 ISA_EXT_DATA_ENTRY(zba, true, PRIV_VERSION_1_12_0, ext_zba), 84 ISA_EXT_DATA_ENTRY(zbb, true, PRIV_VERSION_1_12_0, ext_zbb), 85 ISA_EXT_DATA_ENTRY(zbc, true, PRIV_VERSION_1_12_0, ext_zbc), 86 ISA_EXT_DATA_ENTRY(zbkb, true, PRIV_VERSION_1_12_0, ext_zbkb), 87 ISA_EXT_DATA_ENTRY(zbkc, true, PRIV_VERSION_1_12_0, ext_zbkc), 88 ISA_EXT_DATA_ENTRY(zbkx, true, PRIV_VERSION_1_12_0, ext_zbkx), 89 ISA_EXT_DATA_ENTRY(zbs, true, PRIV_VERSION_1_12_0, ext_zbs), 90 ISA_EXT_DATA_ENTRY(zk, true, PRIV_VERSION_1_12_0, ext_zk), 91 ISA_EXT_DATA_ENTRY(zkn, true, PRIV_VERSION_1_12_0, ext_zkn), 92 ISA_EXT_DATA_ENTRY(zknd, true, PRIV_VERSION_1_12_0, ext_zknd), 93 ISA_EXT_DATA_ENTRY(zkne, true, PRIV_VERSION_1_12_0, ext_zkne), 94 ISA_EXT_DATA_ENTRY(zknh, true, PRIV_VERSION_1_12_0, ext_zknh), 95 ISA_EXT_DATA_ENTRY(zkr, true, PRIV_VERSION_1_12_0, ext_zkr), 96 ISA_EXT_DATA_ENTRY(zks, true, PRIV_VERSION_1_12_0, ext_zks), 97 ISA_EXT_DATA_ENTRY(zksed, true, PRIV_VERSION_1_12_0, ext_zksed), 98 ISA_EXT_DATA_ENTRY(zksh, true, PRIV_VERSION_1_12_0, ext_zksh), 99 ISA_EXT_DATA_ENTRY(zkt, true, PRIV_VERSION_1_12_0, ext_zkt), 100 ISA_EXT_DATA_ENTRY(zve32f, true, PRIV_VERSION_1_12_0, ext_zve32f), 101 ISA_EXT_DATA_ENTRY(zve64f, true, PRIV_VERSION_1_12_0, ext_zve64f), 102 ISA_EXT_DATA_ENTRY(zhinx, true, PRIV_VERSION_1_12_0, ext_zhinx), 103 ISA_EXT_DATA_ENTRY(zhinxmin, true, PRIV_VERSION_1_12_0, ext_zhinxmin), 104 ISA_EXT_DATA_ENTRY(smaia, true, PRIV_VERSION_1_12_0, ext_smaia), 105 ISA_EXT_DATA_ENTRY(ssaia, true, PRIV_VERSION_1_12_0, ext_ssaia), 106 ISA_EXT_DATA_ENTRY(sscofpmf, true, PRIV_VERSION_1_12_0, ext_sscofpmf), 107 ISA_EXT_DATA_ENTRY(sstc, true, PRIV_VERSION_1_12_0, ext_sstc), 108 ISA_EXT_DATA_ENTRY(svinval, true, PRIV_VERSION_1_12_0, ext_svinval), 109 ISA_EXT_DATA_ENTRY(svnapot, true, PRIV_VERSION_1_12_0, ext_svnapot), 110 ISA_EXT_DATA_ENTRY(svpbmt, true, PRIV_VERSION_1_12_0, ext_svpbmt), 111 ISA_EXT_DATA_ENTRY(xventanacondops, true, PRIV_VERSION_1_12_0, ext_XVentanaCondOps), 112 }; 113 114 static bool isa_ext_is_enabled(RISCVCPU *cpu, 115 const struct isa_ext_data *edata) 116 { 117 bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset; 118 119 return *ext_enabled; 120 } 121 122 static void isa_ext_update_enabled(RISCVCPU *cpu, 123 const struct isa_ext_data *edata, bool en) 124 { 125 bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset; 126 127 *ext_enabled = en; 128 } 129 130 const char * const riscv_int_regnames[] = { 131 "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", 132 "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", 133 "x14/a4", "x15/a5", "x16/a6", "x17/a7", "x18/s2", "x19/s3", "x20/s4", 134 "x21/s5", "x22/s6", "x23/s7", "x24/s8", "x25/s9", "x26/s10", "x27/s11", 135 "x28/t3", "x29/t4", "x30/t5", "x31/t6" 136 }; 137 138 const char * const riscv_int_regnamesh[] = { 139 "x0h/zeroh", "x1h/rah", "x2h/sph", "x3h/gph", "x4h/tph", "x5h/t0h", 140 "x6h/t1h", "x7h/t2h", "x8h/s0h", "x9h/s1h", "x10h/a0h", "x11h/a1h", 141 "x12h/a2h", "x13h/a3h", "x14h/a4h", "x15h/a5h", "x16h/a6h", "x17h/a7h", 142 "x18h/s2h", "x19h/s3h", "x20h/s4h", "x21h/s5h", "x22h/s6h", "x23h/s7h", 143 "x24h/s8h", "x25h/s9h", "x26h/s10h", "x27h/s11h", "x28h/t3h", "x29h/t4h", 144 "x30h/t5h", "x31h/t6h" 145 }; 146 147 const char * const riscv_fpr_regnames[] = { 148 "f0/ft0", "f1/ft1", "f2/ft2", "f3/ft3", "f4/ft4", "f5/ft5", 149 "f6/ft6", "f7/ft7", "f8/fs0", "f9/fs1", "f10/fa0", "f11/fa1", 150 "f12/fa2", "f13/fa3", "f14/fa4", "f15/fa5", "f16/fa6", "f17/fa7", 151 "f18/fs2", "f19/fs3", "f20/fs4", "f21/fs5", "f22/fs6", "f23/fs7", 152 "f24/fs8", "f25/fs9", "f26/fs10", "f27/fs11", "f28/ft8", "f29/ft9", 153 "f30/ft10", "f31/ft11" 154 }; 155 156 static const char * const riscv_excp_names[] = { 157 "misaligned_fetch", 158 "fault_fetch", 159 "illegal_instruction", 160 "breakpoint", 161 "misaligned_load", 162 "fault_load", 163 "misaligned_store", 164 "fault_store", 165 "user_ecall", 166 "supervisor_ecall", 167 "hypervisor_ecall", 168 "machine_ecall", 169 "exec_page_fault", 170 "load_page_fault", 171 "reserved", 172 "store_page_fault", 173 "reserved", 174 "reserved", 175 "reserved", 176 "reserved", 177 "guest_exec_page_fault", 178 "guest_load_page_fault", 179 "reserved", 180 "guest_store_page_fault", 181 }; 182 183 static const char * const riscv_intr_names[] = { 184 "u_software", 185 "s_software", 186 "vs_software", 187 "m_software", 188 "u_timer", 189 "s_timer", 190 "vs_timer", 191 "m_timer", 192 "u_external", 193 "s_external", 194 "vs_external", 195 "m_external", 196 "reserved", 197 "reserved", 198 "reserved", 199 "reserved" 200 }; 201 202 static void register_cpu_props(DeviceState *dev); 203 204 const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) 205 { 206 if (async) { 207 return (cause < ARRAY_SIZE(riscv_intr_names)) ? 208 riscv_intr_names[cause] : "(unknown)"; 209 } else { 210 return (cause < ARRAY_SIZE(riscv_excp_names)) ? 211 riscv_excp_names[cause] : "(unknown)"; 212 } 213 } 214 215 static void set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext) 216 { 217 env->misa_mxl_max = env->misa_mxl = mxl; 218 env->misa_ext_mask = env->misa_ext = ext; 219 } 220 221 static void set_priv_version(CPURISCVState *env, int priv_ver) 222 { 223 env->priv_ver = priv_ver; 224 } 225 226 static void set_vext_version(CPURISCVState *env, int vext_ver) 227 { 228 env->vext_ver = vext_ver; 229 } 230 231 static void riscv_any_cpu_init(Object *obj) 232 { 233 CPURISCVState *env = &RISCV_CPU(obj)->env; 234 #if defined(TARGET_RISCV32) 235 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU); 236 #elif defined(TARGET_RISCV64) 237 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); 238 #endif 239 set_priv_version(env, PRIV_VERSION_1_12_0); 240 register_cpu_props(DEVICE(obj)); 241 } 242 243 #if defined(TARGET_RISCV64) 244 static void rv64_base_cpu_init(Object *obj) 245 { 246 CPURISCVState *env = &RISCV_CPU(obj)->env; 247 /* We set this in the realise function */ 248 set_misa(env, MXL_RV64, 0); 249 register_cpu_props(DEVICE(obj)); 250 /* Set latest version of privileged specification */ 251 set_priv_version(env, PRIV_VERSION_1_12_0); 252 } 253 254 static void rv64_sifive_u_cpu_init(Object *obj) 255 { 256 CPURISCVState *env = &RISCV_CPU(obj)->env; 257 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); 258 set_priv_version(env, PRIV_VERSION_1_10_0); 259 } 260 261 static void rv64_sifive_e_cpu_init(Object *obj) 262 { 263 CPURISCVState *env = &RISCV_CPU(obj)->env; 264 RISCVCPU *cpu = RISCV_CPU(obj); 265 266 set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU); 267 set_priv_version(env, PRIV_VERSION_1_10_0); 268 cpu->cfg.mmu = false; 269 } 270 271 static void rv128_base_cpu_init(Object *obj) 272 { 273 if (qemu_tcg_mttcg_enabled()) { 274 /* Missing 128-bit aligned atomics */ 275 error_report("128-bit RISC-V currently does not work with Multi " 276 "Threaded TCG. Please use: -accel tcg,thread=single"); 277 exit(EXIT_FAILURE); 278 } 279 CPURISCVState *env = &RISCV_CPU(obj)->env; 280 /* We set this in the realise function */ 281 set_misa(env, MXL_RV128, 0); 282 register_cpu_props(DEVICE(obj)); 283 /* Set latest version of privileged specification */ 284 set_priv_version(env, PRIV_VERSION_1_12_0); 285 } 286 #else 287 static void rv32_base_cpu_init(Object *obj) 288 { 289 CPURISCVState *env = &RISCV_CPU(obj)->env; 290 /* We set this in the realise function */ 291 set_misa(env, MXL_RV32, 0); 292 register_cpu_props(DEVICE(obj)); 293 /* Set latest version of privileged specification */ 294 set_priv_version(env, PRIV_VERSION_1_12_0); 295 } 296 297 static void rv32_sifive_u_cpu_init(Object *obj) 298 { 299 CPURISCVState *env = &RISCV_CPU(obj)->env; 300 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); 301 set_priv_version(env, PRIV_VERSION_1_10_0); 302 } 303 304 static void rv32_sifive_e_cpu_init(Object *obj) 305 { 306 CPURISCVState *env = &RISCV_CPU(obj)->env; 307 RISCVCPU *cpu = RISCV_CPU(obj); 308 309 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU); 310 set_priv_version(env, PRIV_VERSION_1_10_0); 311 cpu->cfg.mmu = false; 312 } 313 314 static void rv32_ibex_cpu_init(Object *obj) 315 { 316 CPURISCVState *env = &RISCV_CPU(obj)->env; 317 RISCVCPU *cpu = RISCV_CPU(obj); 318 319 set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU); 320 set_priv_version(env, PRIV_VERSION_1_11_0); 321 cpu->cfg.mmu = false; 322 cpu->cfg.epmp = true; 323 } 324 325 static void rv32_imafcu_nommu_cpu_init(Object *obj) 326 { 327 CPURISCVState *env = &RISCV_CPU(obj)->env; 328 RISCVCPU *cpu = RISCV_CPU(obj); 329 330 set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU); 331 set_priv_version(env, PRIV_VERSION_1_10_0); 332 cpu->cfg.mmu = false; 333 } 334 #endif 335 336 #if defined(CONFIG_KVM) 337 static void riscv_host_cpu_init(Object *obj) 338 { 339 CPURISCVState *env = &RISCV_CPU(obj)->env; 340 #if defined(TARGET_RISCV32) 341 set_misa(env, MXL_RV32, 0); 342 #elif defined(TARGET_RISCV64) 343 set_misa(env, MXL_RV64, 0); 344 #endif 345 register_cpu_props(DEVICE(obj)); 346 } 347 #endif 348 349 static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model) 350 { 351 ObjectClass *oc; 352 char *typename; 353 char **cpuname; 354 355 cpuname = g_strsplit(cpu_model, ",", 1); 356 typename = g_strdup_printf(RISCV_CPU_TYPE_NAME("%s"), cpuname[0]); 357 oc = object_class_by_name(typename); 358 g_strfreev(cpuname); 359 g_free(typename); 360 if (!oc || !object_class_dynamic_cast(oc, TYPE_RISCV_CPU) || 361 object_class_is_abstract(oc)) { 362 return NULL; 363 } 364 return oc; 365 } 366 367 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags) 368 { 369 RISCVCPU *cpu = RISCV_CPU(cs); 370 CPURISCVState *env = &cpu->env; 371 int i; 372 373 #if !defined(CONFIG_USER_ONLY) 374 if (riscv_has_ext(env, RVH)) { 375 qemu_fprintf(f, " %s %d\n", "V = ", riscv_cpu_virt_enabled(env)); 376 } 377 #endif 378 qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "pc ", env->pc); 379 #ifndef CONFIG_USER_ONLY 380 { 381 static const int dump_csrs[] = { 382 CSR_MHARTID, 383 CSR_MSTATUS, 384 CSR_MSTATUSH, 385 CSR_HSTATUS, 386 CSR_VSSTATUS, 387 CSR_MIP, 388 CSR_MIE, 389 CSR_MIDELEG, 390 CSR_HIDELEG, 391 CSR_MEDELEG, 392 CSR_HEDELEG, 393 CSR_MTVEC, 394 CSR_STVEC, 395 CSR_VSTVEC, 396 CSR_MEPC, 397 CSR_SEPC, 398 CSR_VSEPC, 399 CSR_MCAUSE, 400 CSR_SCAUSE, 401 CSR_VSCAUSE, 402 CSR_MTVAL, 403 CSR_STVAL, 404 CSR_HTVAL, 405 CSR_MTVAL2, 406 CSR_MSCRATCH, 407 CSR_SSCRATCH, 408 CSR_SATP, 409 CSR_MMTE, 410 CSR_UPMBASE, 411 CSR_UPMMASK, 412 CSR_SPMBASE, 413 CSR_SPMMASK, 414 CSR_MPMBASE, 415 CSR_MPMMASK, 416 }; 417 418 for (int i = 0; i < ARRAY_SIZE(dump_csrs); ++i) { 419 int csrno = dump_csrs[i]; 420 target_ulong val = 0; 421 RISCVException res = riscv_csrrw_debug(env, csrno, &val, 0, 0); 422 423 /* 424 * Rely on the smode, hmode, etc, predicates within csr.c 425 * to do the filtering of the registers that are present. 426 */ 427 if (res == RISCV_EXCP_NONE) { 428 qemu_fprintf(f, " %-8s " TARGET_FMT_lx "\n", 429 csr_ops[csrno].name, val); 430 } 431 } 432 } 433 #endif 434 435 for (i = 0; i < 32; i++) { 436 qemu_fprintf(f, " %-8s " TARGET_FMT_lx, 437 riscv_int_regnames[i], env->gpr[i]); 438 if ((i & 3) == 3) { 439 qemu_fprintf(f, "\n"); 440 } 441 } 442 if (flags & CPU_DUMP_FPU) { 443 for (i = 0; i < 32; i++) { 444 qemu_fprintf(f, " %-8s %016" PRIx64, 445 riscv_fpr_regnames[i], env->fpr[i]); 446 if ((i & 3) == 3) { 447 qemu_fprintf(f, "\n"); 448 } 449 } 450 } 451 } 452 453 static void riscv_cpu_set_pc(CPUState *cs, vaddr value) 454 { 455 RISCVCPU *cpu = RISCV_CPU(cs); 456 CPURISCVState *env = &cpu->env; 457 458 if (env->xl == MXL_RV32) { 459 env->pc = (int32_t)value; 460 } else { 461 env->pc = value; 462 } 463 } 464 465 static vaddr riscv_cpu_get_pc(CPUState *cs) 466 { 467 RISCVCPU *cpu = RISCV_CPU(cs); 468 CPURISCVState *env = &cpu->env; 469 470 /* Match cpu_get_tb_cpu_state. */ 471 if (env->xl == MXL_RV32) { 472 return env->pc & UINT32_MAX; 473 } 474 return env->pc; 475 } 476 477 static void riscv_cpu_synchronize_from_tb(CPUState *cs, 478 const TranslationBlock *tb) 479 { 480 RISCVCPU *cpu = RISCV_CPU(cs); 481 CPURISCVState *env = &cpu->env; 482 RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); 483 484 if (xl == MXL_RV32) { 485 env->pc = (int32_t)tb->pc; 486 } else { 487 env->pc = tb->pc; 488 } 489 } 490 491 static bool riscv_cpu_has_work(CPUState *cs) 492 { 493 #ifndef CONFIG_USER_ONLY 494 RISCVCPU *cpu = RISCV_CPU(cs); 495 CPURISCVState *env = &cpu->env; 496 /* 497 * Definition of the WFI instruction requires it to ignore the privilege 498 * mode and delegation registers, but respect individual enables 499 */ 500 return riscv_cpu_all_pending(env) != 0; 501 #else 502 return true; 503 #endif 504 } 505 506 void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb, 507 target_ulong *data) 508 { 509 RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); 510 if (xl == MXL_RV32) { 511 env->pc = (int32_t)data[0]; 512 } else { 513 env->pc = data[0]; 514 } 515 env->bins = data[1]; 516 } 517 518 static void riscv_cpu_reset(DeviceState *dev) 519 { 520 #ifndef CONFIG_USER_ONLY 521 uint8_t iprio; 522 int i, irq, rdzero; 523 #endif 524 CPUState *cs = CPU(dev); 525 RISCVCPU *cpu = RISCV_CPU(cs); 526 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu); 527 CPURISCVState *env = &cpu->env; 528 529 mcc->parent_reset(dev); 530 #ifndef CONFIG_USER_ONLY 531 env->misa_mxl = env->misa_mxl_max; 532 env->priv = PRV_M; 533 env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV); 534 if (env->misa_mxl > MXL_RV32) { 535 /* 536 * The reset status of SXL/UXL is undefined, but mstatus is WARL 537 * and we must ensure that the value after init is valid for read. 538 */ 539 env->mstatus = set_field(env->mstatus, MSTATUS64_SXL, env->misa_mxl); 540 env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl); 541 if (riscv_has_ext(env, RVH)) { 542 env->vsstatus = set_field(env->vsstatus, 543 MSTATUS64_SXL, env->misa_mxl); 544 env->vsstatus = set_field(env->vsstatus, 545 MSTATUS64_UXL, env->misa_mxl); 546 env->mstatus_hs = set_field(env->mstatus_hs, 547 MSTATUS64_SXL, env->misa_mxl); 548 env->mstatus_hs = set_field(env->mstatus_hs, 549 MSTATUS64_UXL, env->misa_mxl); 550 } 551 } 552 env->mcause = 0; 553 env->miclaim = MIP_SGEIP; 554 env->pc = env->resetvec; 555 env->bins = 0; 556 env->two_stage_lookup = false; 557 558 /* Initialized default priorities of local interrupts. */ 559 for (i = 0; i < ARRAY_SIZE(env->miprio); i++) { 560 iprio = riscv_cpu_default_priority(i); 561 env->miprio[i] = (i == IRQ_M_EXT) ? 0 : iprio; 562 env->siprio[i] = (i == IRQ_S_EXT) ? 0 : iprio; 563 env->hviprio[i] = 0; 564 } 565 i = 0; 566 while (!riscv_cpu_hviprio_index2irq(i, &irq, &rdzero)) { 567 if (!rdzero) { 568 env->hviprio[irq] = env->miprio[irq]; 569 } 570 i++; 571 } 572 /* mmte is supposed to have pm.current hardwired to 1 */ 573 env->mmte |= (PM_EXT_INITIAL | MMTE_M_PM_CURRENT); 574 #endif 575 env->xl = riscv_cpu_mxl(env); 576 riscv_cpu_update_mask(env); 577 cs->exception_index = RISCV_EXCP_NONE; 578 env->load_res = -1; 579 set_default_nan_mode(1, &env->fp_status); 580 581 #ifndef CONFIG_USER_ONLY 582 if (riscv_feature(env, RISCV_FEATURE_DEBUG)) { 583 riscv_trigger_init(env); 584 } 585 586 if (kvm_enabled()) { 587 kvm_riscv_reset_vcpu(cpu); 588 } 589 #endif 590 } 591 592 static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) 593 { 594 RISCVCPU *cpu = RISCV_CPU(s); 595 596 switch (riscv_cpu_mxl(&cpu->env)) { 597 case MXL_RV32: 598 info->print_insn = print_insn_riscv32; 599 break; 600 case MXL_RV64: 601 info->print_insn = print_insn_riscv64; 602 break; 603 case MXL_RV128: 604 info->print_insn = print_insn_riscv128; 605 break; 606 default: 607 g_assert_not_reached(); 608 } 609 } 610 611 static void riscv_cpu_realize(DeviceState *dev, Error **errp) 612 { 613 CPUState *cs = CPU(dev); 614 RISCVCPU *cpu = RISCV_CPU(dev); 615 CPURISCVState *env = &cpu->env; 616 RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev); 617 CPUClass *cc = CPU_CLASS(mcc); 618 int i, priv_version = -1; 619 Error *local_err = NULL; 620 621 cpu_exec_realizefn(cs, &local_err); 622 if (local_err != NULL) { 623 error_propagate(errp, local_err); 624 return; 625 } 626 627 if (cpu->cfg.priv_spec) { 628 if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) { 629 priv_version = PRIV_VERSION_1_12_0; 630 } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { 631 priv_version = PRIV_VERSION_1_11_0; 632 } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { 633 priv_version = PRIV_VERSION_1_10_0; 634 } else { 635 error_setg(errp, 636 "Unsupported privilege spec version '%s'", 637 cpu->cfg.priv_spec); 638 return; 639 } 640 } 641 642 if (priv_version >= PRIV_VERSION_1_10_0) { 643 set_priv_version(env, priv_version); 644 } 645 646 /* Force disable extensions if priv spec version does not match */ 647 for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { 648 if (isa_ext_is_enabled(cpu, &isa_edata_arr[i]) && 649 (env->priv_ver < isa_edata_arr[i].min_version)) { 650 isa_ext_update_enabled(cpu, &isa_edata_arr[i], false); 651 #ifndef CONFIG_USER_ONLY 652 warn_report("disabling %s extension for hart 0x%lx because " 653 "privilege spec version does not match", 654 isa_edata_arr[i].name, (unsigned long)env->mhartid); 655 #else 656 warn_report("disabling %s extension because " 657 "privilege spec version does not match", 658 isa_edata_arr[i].name); 659 #endif 660 } 661 } 662 663 if (cpu->cfg.mmu) { 664 riscv_set_feature(env, RISCV_FEATURE_MMU); 665 } 666 667 if (cpu->cfg.pmp) { 668 riscv_set_feature(env, RISCV_FEATURE_PMP); 669 670 /* 671 * Enhanced PMP should only be available 672 * on harts with PMP support 673 */ 674 if (cpu->cfg.epmp) { 675 riscv_set_feature(env, RISCV_FEATURE_EPMP); 676 } 677 } 678 679 if (cpu->cfg.debug) { 680 riscv_set_feature(env, RISCV_FEATURE_DEBUG); 681 } 682 683 684 #ifndef CONFIG_USER_ONLY 685 if (cpu->cfg.ext_sstc) { 686 riscv_timer_init(cpu); 687 } 688 #endif /* CONFIG_USER_ONLY */ 689 690 /* Validate that MISA_MXL is set properly. */ 691 switch (env->misa_mxl_max) { 692 #ifdef TARGET_RISCV64 693 case MXL_RV64: 694 case MXL_RV128: 695 cc->gdb_core_xml_file = "riscv-64bit-cpu.xml"; 696 break; 697 #endif 698 case MXL_RV32: 699 cc->gdb_core_xml_file = "riscv-32bit-cpu.xml"; 700 break; 701 default: 702 g_assert_not_reached(); 703 } 704 assert(env->misa_mxl_max == env->misa_mxl); 705 706 /* If only MISA_EXT is unset for misa, then set it from properties */ 707 if (env->misa_ext == 0) { 708 uint32_t ext = 0; 709 710 /* Do some ISA extension error checking */ 711 if (cpu->cfg.ext_g && !(cpu->cfg.ext_i && cpu->cfg.ext_m && 712 cpu->cfg.ext_a && cpu->cfg.ext_f && 713 cpu->cfg.ext_d && 714 cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) { 715 warn_report("Setting G will also set IMAFD_Zicsr_Zifencei"); 716 cpu->cfg.ext_i = true; 717 cpu->cfg.ext_m = true; 718 cpu->cfg.ext_a = true; 719 cpu->cfg.ext_f = true; 720 cpu->cfg.ext_d = true; 721 cpu->cfg.ext_icsr = true; 722 cpu->cfg.ext_ifencei = true; 723 } 724 725 if (cpu->cfg.ext_i && cpu->cfg.ext_e) { 726 error_setg(errp, 727 "I and E extensions are incompatible"); 728 return; 729 } 730 731 if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) { 732 error_setg(errp, 733 "Either I or E extension must be set"); 734 return; 735 } 736 737 if (cpu->cfg.ext_s && !cpu->cfg.ext_u) { 738 error_setg(errp, 739 "Setting S extension without U extension is illegal"); 740 return; 741 } 742 743 if (cpu->cfg.ext_h && !cpu->cfg.ext_i) { 744 error_setg(errp, 745 "H depends on an I base integer ISA with 32 x registers"); 746 return; 747 } 748 749 if (cpu->cfg.ext_h && !cpu->cfg.ext_s) { 750 error_setg(errp, "H extension implicitly requires S-mode"); 751 return; 752 } 753 754 if (cpu->cfg.ext_f && !cpu->cfg.ext_icsr) { 755 error_setg(errp, "F extension requires Zicsr"); 756 return; 757 } 758 759 if ((cpu->cfg.ext_zfh || cpu->cfg.ext_zfhmin) && !cpu->cfg.ext_f) { 760 error_setg(errp, "Zfh/Zfhmin extensions require F extension"); 761 return; 762 } 763 764 if (cpu->cfg.ext_d && !cpu->cfg.ext_f) { 765 error_setg(errp, "D extension requires F extension"); 766 return; 767 } 768 769 if (cpu->cfg.ext_v && !cpu->cfg.ext_d) { 770 error_setg(errp, "V extension requires D extension"); 771 return; 772 } 773 774 if ((cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) && !cpu->cfg.ext_f) { 775 error_setg(errp, "Zve32f/Zve64f extensions require F extension"); 776 return; 777 } 778 779 /* Set the ISA extensions, checks should have happened above */ 780 if (cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinx || 781 cpu->cfg.ext_zhinxmin) { 782 cpu->cfg.ext_zfinx = true; 783 } 784 785 if (cpu->cfg.ext_zfinx) { 786 if (!cpu->cfg.ext_icsr) { 787 error_setg(errp, "Zfinx extension requires Zicsr"); 788 return; 789 } 790 if (cpu->cfg.ext_f) { 791 error_setg(errp, 792 "Zfinx cannot be supported together with F extension"); 793 return; 794 } 795 } 796 797 if (cpu->cfg.ext_zk) { 798 cpu->cfg.ext_zkn = true; 799 cpu->cfg.ext_zkr = true; 800 cpu->cfg.ext_zkt = true; 801 } 802 803 if (cpu->cfg.ext_zkn) { 804 cpu->cfg.ext_zbkb = true; 805 cpu->cfg.ext_zbkc = true; 806 cpu->cfg.ext_zbkx = true; 807 cpu->cfg.ext_zkne = true; 808 cpu->cfg.ext_zknd = true; 809 cpu->cfg.ext_zknh = true; 810 } 811 812 if (cpu->cfg.ext_zks) { 813 cpu->cfg.ext_zbkb = true; 814 cpu->cfg.ext_zbkc = true; 815 cpu->cfg.ext_zbkx = true; 816 cpu->cfg.ext_zksed = true; 817 cpu->cfg.ext_zksh = true; 818 } 819 820 if (cpu->cfg.ext_i) { 821 ext |= RVI; 822 } 823 if (cpu->cfg.ext_e) { 824 ext |= RVE; 825 } 826 if (cpu->cfg.ext_m) { 827 ext |= RVM; 828 } 829 if (cpu->cfg.ext_a) { 830 ext |= RVA; 831 } 832 if (cpu->cfg.ext_f) { 833 ext |= RVF; 834 } 835 if (cpu->cfg.ext_d) { 836 ext |= RVD; 837 } 838 if (cpu->cfg.ext_c) { 839 ext |= RVC; 840 } 841 if (cpu->cfg.ext_s) { 842 ext |= RVS; 843 } 844 if (cpu->cfg.ext_u) { 845 ext |= RVU; 846 } 847 if (cpu->cfg.ext_h) { 848 ext |= RVH; 849 } 850 if (cpu->cfg.ext_v) { 851 int vext_version = VEXT_VERSION_1_00_0; 852 ext |= RVV; 853 if (!is_power_of_2(cpu->cfg.vlen)) { 854 error_setg(errp, 855 "Vector extension VLEN must be power of 2"); 856 return; 857 } 858 if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) { 859 error_setg(errp, 860 "Vector extension implementation only supports VLEN " 861 "in the range [128, %d]", RV_VLEN_MAX); 862 return; 863 } 864 if (!is_power_of_2(cpu->cfg.elen)) { 865 error_setg(errp, 866 "Vector extension ELEN must be power of 2"); 867 return; 868 } 869 if (cpu->cfg.elen > 64 || cpu->cfg.vlen < 8) { 870 error_setg(errp, 871 "Vector extension implementation only supports ELEN " 872 "in the range [8, 64]"); 873 return; 874 } 875 if (cpu->cfg.vext_spec) { 876 if (!g_strcmp0(cpu->cfg.vext_spec, "v1.0")) { 877 vext_version = VEXT_VERSION_1_00_0; 878 } else { 879 error_setg(errp, 880 "Unsupported vector spec version '%s'", 881 cpu->cfg.vext_spec); 882 return; 883 } 884 } else { 885 qemu_log("vector version is not specified, " 886 "use the default value v1.0\n"); 887 } 888 set_vext_version(env, vext_version); 889 } 890 if (cpu->cfg.ext_j) { 891 ext |= RVJ; 892 } 893 894 set_misa(env, env->misa_mxl, ext); 895 } 896 897 #ifndef CONFIG_USER_ONLY 898 if (cpu->cfg.pmu_num) { 899 if (!riscv_pmu_init(cpu, cpu->cfg.pmu_num) && cpu->cfg.ext_sscofpmf) { 900 cpu->pmu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 901 riscv_pmu_timer_cb, cpu); 902 } 903 } 904 #endif 905 906 riscv_cpu_register_gdb_regs_for_features(cs); 907 908 qemu_init_vcpu(cs); 909 cpu_reset(cs); 910 911 mcc->parent_realize(dev, errp); 912 } 913 914 #ifndef CONFIG_USER_ONLY 915 static void riscv_cpu_set_irq(void *opaque, int irq, int level) 916 { 917 RISCVCPU *cpu = RISCV_CPU(opaque); 918 CPURISCVState *env = &cpu->env; 919 920 if (irq < IRQ_LOCAL_MAX) { 921 switch (irq) { 922 case IRQ_U_SOFT: 923 case IRQ_S_SOFT: 924 case IRQ_VS_SOFT: 925 case IRQ_M_SOFT: 926 case IRQ_U_TIMER: 927 case IRQ_S_TIMER: 928 case IRQ_VS_TIMER: 929 case IRQ_M_TIMER: 930 case IRQ_U_EXT: 931 case IRQ_VS_EXT: 932 case IRQ_M_EXT: 933 if (kvm_enabled()) { 934 kvm_riscv_set_irq(cpu, irq, level); 935 } else { 936 riscv_cpu_update_mip(cpu, 1 << irq, BOOL_TO_MASK(level)); 937 } 938 break; 939 case IRQ_S_EXT: 940 if (kvm_enabled()) { 941 kvm_riscv_set_irq(cpu, irq, level); 942 } else { 943 env->external_seip = level; 944 riscv_cpu_update_mip(cpu, 1 << irq, 945 BOOL_TO_MASK(level | env->software_seip)); 946 } 947 break; 948 default: 949 g_assert_not_reached(); 950 } 951 } else if (irq < (IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX)) { 952 /* Require H-extension for handling guest local interrupts */ 953 if (!riscv_has_ext(env, RVH)) { 954 g_assert_not_reached(); 955 } 956 957 /* Compute bit position in HGEIP CSR */ 958 irq = irq - IRQ_LOCAL_MAX + 1; 959 if (env->geilen < irq) { 960 g_assert_not_reached(); 961 } 962 963 /* Update HGEIP CSR */ 964 env->hgeip &= ~((target_ulong)1 << irq); 965 if (level) { 966 env->hgeip |= (target_ulong)1 << irq; 967 } 968 969 /* Update mip.SGEIP bit */ 970 riscv_cpu_update_mip(cpu, MIP_SGEIP, 971 BOOL_TO_MASK(!!(env->hgeie & env->hgeip))); 972 } else { 973 g_assert_not_reached(); 974 } 975 } 976 #endif /* CONFIG_USER_ONLY */ 977 978 static void riscv_cpu_init(Object *obj) 979 { 980 RISCVCPU *cpu = RISCV_CPU(obj); 981 982 cpu->cfg.ext_ifencei = true; 983 cpu->cfg.ext_icsr = true; 984 cpu->cfg.mmu = true; 985 cpu->cfg.pmp = true; 986 987 cpu_set_cpustate_pointers(cpu); 988 989 #ifndef CONFIG_USER_ONLY 990 qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 991 IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX); 992 #endif /* CONFIG_USER_ONLY */ 993 } 994 995 static Property riscv_cpu_extensions[] = { 996 /* Defaults for standard extensions */ 997 DEFINE_PROP_BOOL("i", RISCVCPU, cfg.ext_i, true), 998 DEFINE_PROP_BOOL("e", RISCVCPU, cfg.ext_e, false), 999 DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, false), 1000 DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true), 1001 DEFINE_PROP_BOOL("a", RISCVCPU, cfg.ext_a, true), 1002 DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true), 1003 DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true), 1004 DEFINE_PROP_BOOL("c", RISCVCPU, cfg.ext_c, true), 1005 DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true), 1006 DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true), 1007 DEFINE_PROP_BOOL("v", RISCVCPU, cfg.ext_v, false), 1008 DEFINE_PROP_BOOL("h", RISCVCPU, cfg.ext_h, true), 1009 DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), 1010 DEFINE_PROP_BOOL("sscofpmf", RISCVCPU, cfg.ext_sscofpmf, false), 1011 DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), 1012 DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), 1013 DEFINE_PROP_BOOL("Zihintpause", RISCVCPU, cfg.ext_zihintpause, true), 1014 DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false), 1015 DEFINE_PROP_BOOL("Zfhmin", RISCVCPU, cfg.ext_zfhmin, false), 1016 DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false), 1017 DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false), 1018 DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), 1019 DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), 1020 DEFINE_PROP_BOOL("sstc", RISCVCPU, cfg.ext_sstc, true), 1021 1022 DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), 1023 DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), 1024 DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), 1025 DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), 1026 1027 DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false), 1028 DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false), 1029 DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false), 1030 1031 DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true), 1032 DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true), 1033 DEFINE_PROP_BOOL("zbc", RISCVCPU, cfg.ext_zbc, true), 1034 DEFINE_PROP_BOOL("zbkb", RISCVCPU, cfg.ext_zbkb, false), 1035 DEFINE_PROP_BOOL("zbkc", RISCVCPU, cfg.ext_zbkc, false), 1036 DEFINE_PROP_BOOL("zbkx", RISCVCPU, cfg.ext_zbkx, false), 1037 DEFINE_PROP_BOOL("zbs", RISCVCPU, cfg.ext_zbs, true), 1038 DEFINE_PROP_BOOL("zk", RISCVCPU, cfg.ext_zk, false), 1039 DEFINE_PROP_BOOL("zkn", RISCVCPU, cfg.ext_zkn, false), 1040 DEFINE_PROP_BOOL("zknd", RISCVCPU, cfg.ext_zknd, false), 1041 DEFINE_PROP_BOOL("zkne", RISCVCPU, cfg.ext_zkne, false), 1042 DEFINE_PROP_BOOL("zknh", RISCVCPU, cfg.ext_zknh, false), 1043 DEFINE_PROP_BOOL("zkr", RISCVCPU, cfg.ext_zkr, false), 1044 DEFINE_PROP_BOOL("zks", RISCVCPU, cfg.ext_zks, false), 1045 DEFINE_PROP_BOOL("zksed", RISCVCPU, cfg.ext_zksed, false), 1046 DEFINE_PROP_BOOL("zksh", RISCVCPU, cfg.ext_zksh, false), 1047 DEFINE_PROP_BOOL("zkt", RISCVCPU, cfg.ext_zkt, false), 1048 1049 DEFINE_PROP_BOOL("zdinx", RISCVCPU, cfg.ext_zdinx, false), 1050 DEFINE_PROP_BOOL("zfinx", RISCVCPU, cfg.ext_zfinx, false), 1051 DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false), 1052 DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false), 1053 1054 DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false), 1055 1056 /* Vendor-specific custom extensions */ 1057 DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false), 1058 1059 /* These are experimental so mark with 'x-' */ 1060 DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false), 1061 /* ePMP 0.9.3 */ 1062 DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), 1063 DEFINE_PROP_BOOL("x-smaia", RISCVCPU, cfg.ext_smaia, false), 1064 DEFINE_PROP_BOOL("x-ssaia", RISCVCPU, cfg.ext_ssaia, false), 1065 1066 DEFINE_PROP_END_OF_LIST(), 1067 }; 1068 1069 static void register_cpu_props(DeviceState *dev) 1070 { 1071 Property *prop; 1072 1073 for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { 1074 qdev_property_add_static(dev, prop); 1075 } 1076 } 1077 1078 static Property riscv_cpu_properties[] = { 1079 DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true), 1080 1081 DEFINE_PROP_UINT32("mvendorid", RISCVCPU, cfg.mvendorid, 0), 1082 DEFINE_PROP_UINT64("marchid", RISCVCPU, cfg.marchid, RISCV_CPU_MARCHID), 1083 DEFINE_PROP_UINT64("mimpid", RISCVCPU, cfg.mimpid, RISCV_CPU_MIMPID), 1084 1085 #ifndef CONFIG_USER_ONLY 1086 DEFINE_PROP_UINT64("resetvec", RISCVCPU, env.resetvec, DEFAULT_RSTVEC), 1087 #endif 1088 1089 DEFINE_PROP_BOOL("short-isa-string", RISCVCPU, cfg.short_isa_string, false), 1090 1091 DEFINE_PROP_BOOL("rvv_ta_all_1s", RISCVCPU, cfg.rvv_ta_all_1s, false), 1092 DEFINE_PROP_BOOL("rvv_ma_all_1s", RISCVCPU, cfg.rvv_ma_all_1s, false), 1093 DEFINE_PROP_END_OF_LIST(), 1094 }; 1095 1096 static gchar *riscv_gdb_arch_name(CPUState *cs) 1097 { 1098 RISCVCPU *cpu = RISCV_CPU(cs); 1099 CPURISCVState *env = &cpu->env; 1100 1101 switch (riscv_cpu_mxl(env)) { 1102 case MXL_RV32: 1103 return g_strdup("riscv:rv32"); 1104 case MXL_RV64: 1105 case MXL_RV128: 1106 return g_strdup("riscv:rv64"); 1107 default: 1108 g_assert_not_reached(); 1109 } 1110 } 1111 1112 static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname) 1113 { 1114 RISCVCPU *cpu = RISCV_CPU(cs); 1115 1116 if (strcmp(xmlname, "riscv-csr.xml") == 0) { 1117 return cpu->dyn_csr_xml; 1118 } else if (strcmp(xmlname, "riscv-vector.xml") == 0) { 1119 return cpu->dyn_vreg_xml; 1120 } 1121 1122 return NULL; 1123 } 1124 1125 #ifndef CONFIG_USER_ONLY 1126 #include "hw/core/sysemu-cpu-ops.h" 1127 1128 static const struct SysemuCPUOps riscv_sysemu_ops = { 1129 .get_phys_page_debug = riscv_cpu_get_phys_page_debug, 1130 .write_elf64_note = riscv_cpu_write_elf64_note, 1131 .write_elf32_note = riscv_cpu_write_elf32_note, 1132 .legacy_vmsd = &vmstate_riscv_cpu, 1133 }; 1134 #endif 1135 1136 #include "hw/core/tcg-cpu-ops.h" 1137 1138 static const struct TCGCPUOps riscv_tcg_ops = { 1139 .initialize = riscv_translate_init, 1140 .synchronize_from_tb = riscv_cpu_synchronize_from_tb, 1141 1142 #ifndef CONFIG_USER_ONLY 1143 .tlb_fill = riscv_cpu_tlb_fill, 1144 .cpu_exec_interrupt = riscv_cpu_exec_interrupt, 1145 .do_interrupt = riscv_cpu_do_interrupt, 1146 .do_transaction_failed = riscv_cpu_do_transaction_failed, 1147 .do_unaligned_access = riscv_cpu_do_unaligned_access, 1148 .debug_excp_handler = riscv_cpu_debug_excp_handler, 1149 .debug_check_breakpoint = riscv_cpu_debug_check_breakpoint, 1150 .debug_check_watchpoint = riscv_cpu_debug_check_watchpoint, 1151 #endif /* !CONFIG_USER_ONLY */ 1152 }; 1153 1154 static void riscv_cpu_class_init(ObjectClass *c, void *data) 1155 { 1156 RISCVCPUClass *mcc = RISCV_CPU_CLASS(c); 1157 CPUClass *cc = CPU_CLASS(c); 1158 DeviceClass *dc = DEVICE_CLASS(c); 1159 1160 device_class_set_parent_realize(dc, riscv_cpu_realize, 1161 &mcc->parent_realize); 1162 1163 device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset); 1164 1165 cc->class_by_name = riscv_cpu_class_by_name; 1166 cc->has_work = riscv_cpu_has_work; 1167 cc->dump_state = riscv_cpu_dump_state; 1168 cc->set_pc = riscv_cpu_set_pc; 1169 cc->get_pc = riscv_cpu_get_pc; 1170 cc->gdb_read_register = riscv_cpu_gdb_read_register; 1171 cc->gdb_write_register = riscv_cpu_gdb_write_register; 1172 cc->gdb_num_core_regs = 33; 1173 cc->gdb_stop_before_watchpoint = true; 1174 cc->disas_set_info = riscv_cpu_disas_set_info; 1175 #ifndef CONFIG_USER_ONLY 1176 cc->sysemu_ops = &riscv_sysemu_ops; 1177 #endif 1178 cc->gdb_arch_name = riscv_gdb_arch_name; 1179 cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml; 1180 cc->tcg_ops = &riscv_tcg_ops; 1181 1182 device_class_set_props(dc, riscv_cpu_properties); 1183 } 1184 1185 static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int max_str_len) 1186 { 1187 char *old = *isa_str; 1188 char *new = *isa_str; 1189 int i; 1190 1191 for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { 1192 if (isa_edata_arr[i].multi_letter && 1193 isa_ext_is_enabled(cpu, &isa_edata_arr[i])) { 1194 new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL); 1195 g_free(old); 1196 old = new; 1197 } 1198 } 1199 1200 *isa_str = new; 1201 } 1202 1203 char *riscv_isa_string(RISCVCPU *cpu) 1204 { 1205 int i; 1206 const size_t maxlen = sizeof("rv128") + sizeof(riscv_single_letter_exts); 1207 char *isa_str = g_new(char, maxlen); 1208 char *p = isa_str + snprintf(isa_str, maxlen, "rv%d", TARGET_LONG_BITS); 1209 for (i = 0; i < sizeof(riscv_single_letter_exts) - 1; i++) { 1210 if (cpu->env.misa_ext & RV(riscv_single_letter_exts[i])) { 1211 *p++ = qemu_tolower(riscv_single_letter_exts[i]); 1212 } 1213 } 1214 *p = '\0'; 1215 if (!cpu->cfg.short_isa_string) { 1216 riscv_isa_string_ext(cpu, &isa_str, maxlen); 1217 } 1218 return isa_str; 1219 } 1220 1221 static gint riscv_cpu_list_compare(gconstpointer a, gconstpointer b) 1222 { 1223 ObjectClass *class_a = (ObjectClass *)a; 1224 ObjectClass *class_b = (ObjectClass *)b; 1225 const char *name_a, *name_b; 1226 1227 name_a = object_class_get_name(class_a); 1228 name_b = object_class_get_name(class_b); 1229 return strcmp(name_a, name_b); 1230 } 1231 1232 static void riscv_cpu_list_entry(gpointer data, gpointer user_data) 1233 { 1234 const char *typename = object_class_get_name(OBJECT_CLASS(data)); 1235 int len = strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX); 1236 1237 qemu_printf("%.*s\n", len, typename); 1238 } 1239 1240 void riscv_cpu_list(void) 1241 { 1242 GSList *list; 1243 1244 list = object_class_get_list(TYPE_RISCV_CPU, false); 1245 list = g_slist_sort(list, riscv_cpu_list_compare); 1246 g_slist_foreach(list, riscv_cpu_list_entry, NULL); 1247 g_slist_free(list); 1248 } 1249 1250 #define DEFINE_CPU(type_name, initfn) \ 1251 { \ 1252 .name = type_name, \ 1253 .parent = TYPE_RISCV_CPU, \ 1254 .instance_init = initfn \ 1255 } 1256 1257 static const TypeInfo riscv_cpu_type_infos[] = { 1258 { 1259 .name = TYPE_RISCV_CPU, 1260 .parent = TYPE_CPU, 1261 .instance_size = sizeof(RISCVCPU), 1262 .instance_align = __alignof__(RISCVCPU), 1263 .instance_init = riscv_cpu_init, 1264 .abstract = true, 1265 .class_size = sizeof(RISCVCPUClass), 1266 .class_init = riscv_cpu_class_init, 1267 }, 1268 DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), 1269 #if defined(CONFIG_KVM) 1270 DEFINE_CPU(TYPE_RISCV_CPU_HOST, riscv_host_cpu_init), 1271 #endif 1272 #if defined(TARGET_RISCV32) 1273 DEFINE_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init), 1274 DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init), 1275 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init), 1276 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init), 1277 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init), 1278 #elif defined(TARGET_RISCV64) 1279 DEFINE_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init), 1280 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init), 1281 DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init), 1282 DEFINE_CPU(TYPE_RISCV_CPU_SHAKTI_C, rv64_sifive_u_cpu_init), 1283 DEFINE_CPU(TYPE_RISCV_CPU_BASE128, rv128_base_cpu_init), 1284 #endif 1285 }; 1286 1287 DEFINE_TYPES(riscv_cpu_type_infos) 1288