1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * QEMU LoongArch CPU 4 * 5 * Copyright (c) 2021 Loongson Technology Corporation Limited 6 */ 7 8 #include "qemu/osdep.h" 9 #include "qemu/log.h" 10 #include "qemu/qemu-print.h" 11 #include "qapi/error.h" 12 #include "qemu/module.h" 13 #include "sysemu/qtest.h" 14 #include "sysemu/tcg.h" 15 #include "sysemu/kvm.h" 16 #include "kvm/kvm_loongarch.h" 17 #include "exec/exec-all.h" 18 #include "cpu.h" 19 #include "internals.h" 20 #include "fpu/softfloat-helpers.h" 21 #include "cpu-csr.h" 22 #ifndef CONFIG_USER_ONLY 23 #include "sysemu/reset.h" 24 #endif 25 #include "vec.h" 26 #ifdef CONFIG_KVM 27 #include <linux/kvm.h> 28 #endif 29 #ifdef CONFIG_TCG 30 #include "exec/cpu_ldst.h" 31 #include "tcg/tcg.h" 32 #endif 33 34 const char * const regnames[32] = { 35 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", 36 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", 37 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", 38 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", 39 }; 40 41 const char * const fregnames[32] = { 42 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", 43 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", 44 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", 45 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", 46 }; 47 48 struct TypeExcp { 49 int32_t exccode; 50 const char * const name; 51 }; 52 53 static const struct TypeExcp excp_names[] = { 54 {EXCCODE_INT, "Interrupt"}, 55 {EXCCODE_PIL, "Page invalid exception for load"}, 56 {EXCCODE_PIS, "Page invalid exception for store"}, 57 {EXCCODE_PIF, "Page invalid exception for fetch"}, 58 {EXCCODE_PME, "Page modified exception"}, 59 {EXCCODE_PNR, "Page Not Readable exception"}, 60 {EXCCODE_PNX, "Page Not Executable exception"}, 61 {EXCCODE_PPI, "Page Privilege error"}, 62 {EXCCODE_ADEF, "Address error for instruction fetch"}, 63 {EXCCODE_ADEM, "Address error for Memory access"}, 64 {EXCCODE_SYS, "Syscall"}, 65 {EXCCODE_BRK, "Break"}, 66 {EXCCODE_INE, "Instruction Non-Existent"}, 67 {EXCCODE_IPE, "Instruction privilege error"}, 68 {EXCCODE_FPD, "Floating Point Disabled"}, 69 {EXCCODE_FPE, "Floating Point Exception"}, 70 {EXCCODE_DBP, "Debug breakpoint"}, 71 {EXCCODE_BCE, "Bound Check Exception"}, 72 {EXCCODE_SXD, "128 bit vector instructions Disable exception"}, 73 {EXCCODE_ASXD, "256 bit vector instructions Disable exception"}, 74 {EXCP_HLT, "EXCP_HLT"}, 75 }; 76 77 const char *loongarch_exception_name(int32_t exception) 78 { 79 int i; 80 81 for (i = 0; i < ARRAY_SIZE(excp_names); i++) { 82 if (excp_names[i].exccode == exception) { 83 return excp_names[i].name; 84 } 85 } 86 return "Unknown"; 87 } 88 89 void G_NORETURN do_raise_exception(CPULoongArchState *env, 90 uint32_t exception, 91 uintptr_t pc) 92 { 93 CPUState *cs = env_cpu(env); 94 95 qemu_log_mask(CPU_LOG_INT, "%s: exception: %d (%s)\n", 96 __func__, 97 exception, 98 loongarch_exception_name(exception)); 99 cs->exception_index = exception; 100 101 cpu_loop_exit_restore(cs, pc); 102 } 103 104 static void loongarch_cpu_set_pc(CPUState *cs, vaddr value) 105 { 106 set_pc(cpu_env(cs), value); 107 } 108 109 static vaddr loongarch_cpu_get_pc(CPUState *cs) 110 { 111 return cpu_env(cs)->pc; 112 } 113 114 #ifndef CONFIG_USER_ONLY 115 #include "hw/loongarch/virt.h" 116 117 void loongarch_cpu_set_irq(void *opaque, int irq, int level) 118 { 119 LoongArchCPU *cpu = opaque; 120 CPULoongArchState *env = &cpu->env; 121 CPUState *cs = CPU(cpu); 122 123 if (irq < 0 || irq >= N_IRQS) { 124 return; 125 } 126 127 if (kvm_enabled()) { 128 kvm_loongarch_set_interrupt(cpu, irq, level); 129 } else if (tcg_enabled()) { 130 env->CSR_ESTAT = deposit64(env->CSR_ESTAT, irq, 1, level != 0); 131 if (FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS)) { 132 cpu_interrupt(cs, CPU_INTERRUPT_HARD); 133 } else { 134 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); 135 } 136 } 137 } 138 139 static inline bool cpu_loongarch_hw_interrupts_enabled(CPULoongArchState *env) 140 { 141 bool ret = 0; 142 143 ret = (FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE) && 144 !(FIELD_EX64(env->CSR_DBG, CSR_DBG, DST))); 145 146 return ret; 147 } 148 149 /* Check if there is pending and not masked out interrupt */ 150 static inline bool cpu_loongarch_hw_interrupts_pending(CPULoongArchState *env) 151 { 152 uint32_t pending; 153 uint32_t status; 154 155 pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS); 156 status = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE); 157 158 return (pending & status) != 0; 159 } 160 #endif 161 162 #ifdef CONFIG_TCG 163 #ifndef CONFIG_USER_ONLY 164 static void loongarch_cpu_do_interrupt(CPUState *cs) 165 { 166 CPULoongArchState *env = cpu_env(cs); 167 bool update_badinstr = 1; 168 int cause = -1; 169 bool tlbfill = FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR); 170 uint32_t vec_size = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, VS); 171 172 if (cs->exception_index != EXCCODE_INT) { 173 qemu_log_mask(CPU_LOG_INT, 174 "%s enter: pc " TARGET_FMT_lx " ERA " TARGET_FMT_lx 175 " TLBRERA " TARGET_FMT_lx " exception: %d (%s)\n", 176 __func__, env->pc, env->CSR_ERA, env->CSR_TLBRERA, 177 cs->exception_index, 178 loongarch_exception_name(cs->exception_index)); 179 } 180 181 switch (cs->exception_index) { 182 case EXCCODE_DBP: 183 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DCL, 1); 184 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, ECODE, 0xC); 185 goto set_DERA; 186 set_DERA: 187 env->CSR_DERA = env->pc; 188 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DST, 1); 189 set_pc(env, env->CSR_EENTRY + 0x480); 190 break; 191 case EXCCODE_INT: 192 if (FIELD_EX64(env->CSR_DBG, CSR_DBG, DST)) { 193 env->CSR_DBG = FIELD_DP64(env->CSR_DBG, CSR_DBG, DEI, 1); 194 goto set_DERA; 195 } 196 QEMU_FALLTHROUGH; 197 case EXCCODE_PIF: 198 case EXCCODE_ADEF: 199 cause = cs->exception_index; 200 update_badinstr = 0; 201 break; 202 case EXCCODE_SYS: 203 case EXCCODE_BRK: 204 case EXCCODE_INE: 205 case EXCCODE_IPE: 206 case EXCCODE_FPD: 207 case EXCCODE_FPE: 208 case EXCCODE_SXD: 209 case EXCCODE_ASXD: 210 env->CSR_BADV = env->pc; 211 QEMU_FALLTHROUGH; 212 case EXCCODE_BCE: 213 case EXCCODE_ADEM: 214 case EXCCODE_PIL: 215 case EXCCODE_PIS: 216 case EXCCODE_PME: 217 case EXCCODE_PNR: 218 case EXCCODE_PNX: 219 case EXCCODE_PPI: 220 cause = cs->exception_index; 221 break; 222 default: 223 qemu_log("Error: exception(%d) has not been supported\n", 224 cs->exception_index); 225 abort(); 226 } 227 228 if (update_badinstr) { 229 env->CSR_BADI = cpu_ldl_code(env, env->pc); 230 } 231 232 /* Save PLV and IE */ 233 if (tlbfill) { 234 env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PPLV, 235 FIELD_EX64(env->CSR_CRMD, 236 CSR_CRMD, PLV)); 237 env->CSR_TLBRPRMD = FIELD_DP64(env->CSR_TLBRPRMD, CSR_TLBRPRMD, PIE, 238 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE)); 239 /* set the DA mode */ 240 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1); 241 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0); 242 env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, 243 PC, (env->pc >> 2)); 244 } else { 245 env->CSR_ESTAT = FIELD_DP64(env->CSR_ESTAT, CSR_ESTAT, ECODE, 246 EXCODE_MCODE(cause)); 247 env->CSR_ESTAT = FIELD_DP64(env->CSR_ESTAT, CSR_ESTAT, ESUBCODE, 248 EXCODE_SUBCODE(cause)); 249 env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PPLV, 250 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV)); 251 env->CSR_PRMD = FIELD_DP64(env->CSR_PRMD, CSR_PRMD, PIE, 252 FIELD_EX64(env->CSR_CRMD, CSR_CRMD, IE)); 253 env->CSR_ERA = env->pc; 254 } 255 256 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0); 257 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0); 258 259 if (vec_size) { 260 vec_size = (1 << vec_size) * 4; 261 } 262 263 if (cs->exception_index == EXCCODE_INT) { 264 /* Interrupt */ 265 uint32_t vector = 0; 266 uint32_t pending = FIELD_EX64(env->CSR_ESTAT, CSR_ESTAT, IS); 267 pending &= FIELD_EX64(env->CSR_ECFG, CSR_ECFG, LIE); 268 269 /* Find the highest-priority interrupt. */ 270 vector = 31 - clz32(pending); 271 set_pc(env, env->CSR_EENTRY + \ 272 (EXCCODE_EXTERNAL_INT + vector) * vec_size); 273 qemu_log_mask(CPU_LOG_INT, 274 "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx 275 " cause %d\n" " A " TARGET_FMT_lx " D " 276 TARGET_FMT_lx " vector = %d ExC " TARGET_FMT_lx "ExS" 277 TARGET_FMT_lx "\n", 278 __func__, env->pc, env->CSR_ERA, 279 cause, env->CSR_BADV, env->CSR_DERA, vector, 280 env->CSR_ECFG, env->CSR_ESTAT); 281 } else { 282 if (tlbfill) { 283 set_pc(env, env->CSR_TLBRENTRY); 284 } else { 285 set_pc(env, env->CSR_EENTRY + EXCODE_MCODE(cause) * vec_size); 286 } 287 qemu_log_mask(CPU_LOG_INT, 288 "%s: PC " TARGET_FMT_lx " ERA " TARGET_FMT_lx 289 " cause %d%s\n, ESTAT " TARGET_FMT_lx 290 " EXCFG " TARGET_FMT_lx " BADVA " TARGET_FMT_lx 291 "BADI " TARGET_FMT_lx " SYS_NUM " TARGET_FMT_lu 292 " cpu %d asid " TARGET_FMT_lx "\n", __func__, env->pc, 293 tlbfill ? env->CSR_TLBRERA : env->CSR_ERA, 294 cause, tlbfill ? "(refill)" : "", env->CSR_ESTAT, 295 env->CSR_ECFG, 296 tlbfill ? env->CSR_TLBRBADV : env->CSR_BADV, 297 env->CSR_BADI, env->gpr[11], cs->cpu_index, 298 env->CSR_ASID); 299 } 300 cs->exception_index = -1; 301 } 302 303 static void loongarch_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, 304 vaddr addr, unsigned size, 305 MMUAccessType access_type, 306 int mmu_idx, MemTxAttrs attrs, 307 MemTxResult response, 308 uintptr_t retaddr) 309 { 310 CPULoongArchState *env = cpu_env(cs); 311 312 if (access_type == MMU_INST_FETCH) { 313 do_raise_exception(env, EXCCODE_ADEF, retaddr); 314 } else { 315 do_raise_exception(env, EXCCODE_ADEM, retaddr); 316 } 317 } 318 319 static bool loongarch_cpu_exec_interrupt(CPUState *cs, int interrupt_request) 320 { 321 if (interrupt_request & CPU_INTERRUPT_HARD) { 322 CPULoongArchState *env = cpu_env(cs); 323 324 if (cpu_loongarch_hw_interrupts_enabled(env) && 325 cpu_loongarch_hw_interrupts_pending(env)) { 326 /* Raise it */ 327 cs->exception_index = EXCCODE_INT; 328 loongarch_cpu_do_interrupt(cs); 329 return true; 330 } 331 } 332 return false; 333 } 334 #endif 335 336 static void loongarch_cpu_synchronize_from_tb(CPUState *cs, 337 const TranslationBlock *tb) 338 { 339 tcg_debug_assert(!tcg_cflags_has(cs, CF_PCREL)); 340 set_pc(cpu_env(cs), tb->pc); 341 } 342 343 static void loongarch_restore_state_to_opc(CPUState *cs, 344 const TranslationBlock *tb, 345 const uint64_t *data) 346 { 347 set_pc(cpu_env(cs), data[0]); 348 } 349 #endif /* CONFIG_TCG */ 350 351 static bool loongarch_cpu_has_work(CPUState *cs) 352 { 353 #ifdef CONFIG_USER_ONLY 354 return true; 355 #else 356 bool has_work = false; 357 358 if ((cs->interrupt_request & CPU_INTERRUPT_HARD) && 359 cpu_loongarch_hw_interrupts_pending(cpu_env(cs))) { 360 has_work = true; 361 } 362 363 return has_work; 364 #endif 365 } 366 367 static int loongarch_cpu_mmu_index(CPUState *cs, bool ifetch) 368 { 369 CPULoongArchState *env = cpu_env(cs); 370 371 if (FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PG)) { 372 return FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV); 373 } 374 return MMU_DA_IDX; 375 } 376 377 static void loongarch_la464_initfn(Object *obj) 378 { 379 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 380 CPULoongArchState *env = &cpu->env; 381 int i; 382 383 for (i = 0; i < 21; i++) { 384 env->cpucfg[i] = 0x0; 385 } 386 387 cpu->dtb_compatible = "loongarch,Loongson-3A5000"; 388 env->cpucfg[0] = 0x14c010; /* PRID */ 389 390 uint32_t data = 0; 391 data = FIELD_DP32(data, CPUCFG1, ARCH, 2); 392 data = FIELD_DP32(data, CPUCFG1, PGMMU, 1); 393 data = FIELD_DP32(data, CPUCFG1, IOCSR, 1); 394 data = FIELD_DP32(data, CPUCFG1, PALEN, 0x2f); 395 data = FIELD_DP32(data, CPUCFG1, VALEN, 0x2f); 396 data = FIELD_DP32(data, CPUCFG1, UAL, 1); 397 data = FIELD_DP32(data, CPUCFG1, RI, 1); 398 data = FIELD_DP32(data, CPUCFG1, EP, 1); 399 data = FIELD_DP32(data, CPUCFG1, RPLV, 1); 400 data = FIELD_DP32(data, CPUCFG1, HP, 1); 401 data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1); 402 env->cpucfg[1] = data; 403 404 data = 0; 405 data = FIELD_DP32(data, CPUCFG2, FP, 1); 406 data = FIELD_DP32(data, CPUCFG2, FP_SP, 1); 407 data = FIELD_DP32(data, CPUCFG2, FP_DP, 1); 408 data = FIELD_DP32(data, CPUCFG2, FP_VER, 1); 409 data = FIELD_DP32(data, CPUCFG2, LSX, 1), 410 data = FIELD_DP32(data, CPUCFG2, LASX, 1), 411 data = FIELD_DP32(data, CPUCFG2, LLFTP, 1); 412 data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1); 413 data = FIELD_DP32(data, CPUCFG2, LSPW, 1); 414 data = FIELD_DP32(data, CPUCFG2, LAM, 1); 415 env->cpucfg[2] = data; 416 417 env->cpucfg[4] = 100 * 1000 * 1000; /* Crystal frequency */ 418 419 data = 0; 420 data = FIELD_DP32(data, CPUCFG5, CC_MUL, 1); 421 data = FIELD_DP32(data, CPUCFG5, CC_DIV, 1); 422 env->cpucfg[5] = data; 423 424 data = 0; 425 data = FIELD_DP32(data, CPUCFG16, L1_IUPRE, 1); 426 data = FIELD_DP32(data, CPUCFG16, L1_DPRE, 1); 427 data = FIELD_DP32(data, CPUCFG16, L2_IUPRE, 1); 428 data = FIELD_DP32(data, CPUCFG16, L2_IUUNIFY, 1); 429 data = FIELD_DP32(data, CPUCFG16, L2_IUPRIV, 1); 430 data = FIELD_DP32(data, CPUCFG16, L3_IUPRE, 1); 431 data = FIELD_DP32(data, CPUCFG16, L3_IUUNIFY, 1); 432 data = FIELD_DP32(data, CPUCFG16, L3_IUINCL, 1); 433 env->cpucfg[16] = data; 434 435 data = 0; 436 data = FIELD_DP32(data, CPUCFG17, L1IU_WAYS, 3); 437 data = FIELD_DP32(data, CPUCFG17, L1IU_SETS, 8); 438 data = FIELD_DP32(data, CPUCFG17, L1IU_SIZE, 6); 439 env->cpucfg[17] = data; 440 441 data = 0; 442 data = FIELD_DP32(data, CPUCFG18, L1D_WAYS, 3); 443 data = FIELD_DP32(data, CPUCFG18, L1D_SETS, 8); 444 data = FIELD_DP32(data, CPUCFG18, L1D_SIZE, 6); 445 env->cpucfg[18] = data; 446 447 data = 0; 448 data = FIELD_DP32(data, CPUCFG19, L2IU_WAYS, 15); 449 data = FIELD_DP32(data, CPUCFG19, L2IU_SETS, 8); 450 data = FIELD_DP32(data, CPUCFG19, L2IU_SIZE, 6); 451 env->cpucfg[19] = data; 452 453 data = 0; 454 data = FIELD_DP32(data, CPUCFG20, L3IU_WAYS, 15); 455 data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 14); 456 data = FIELD_DP32(data, CPUCFG20, L3IU_SIZE, 6); 457 env->cpucfg[20] = data; 458 459 env->CSR_ASID = FIELD_DP64(0, CSR_ASID, ASIDBITS, 0xa); 460 461 env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, SAVE_NUM, 8); 462 env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, TIMER_BITS, 0x2f); 463 env->CSR_PRCFG1 = FIELD_DP64(env->CSR_PRCFG1, CSR_PRCFG1, VSMAX, 7); 464 465 env->CSR_PRCFG2 = 0x3ffff000; 466 467 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, TLB_TYPE, 2); 468 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, MTLB_ENTRY, 63); 469 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_WAYS, 7); 470 env->CSR_PRCFG3 = FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS, 8); 471 472 loongarch_cpu_post_init(obj); 473 } 474 475 static void loongarch_la132_initfn(Object *obj) 476 { 477 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 478 CPULoongArchState *env = &cpu->env; 479 480 int i; 481 482 for (i = 0; i < 21; i++) { 483 env->cpucfg[i] = 0x0; 484 } 485 486 cpu->dtb_compatible = "loongarch,Loongson-1C103"; 487 env->cpucfg[0] = 0x148042; /* PRID */ 488 489 uint32_t data = 0; 490 data = FIELD_DP32(data, CPUCFG1, ARCH, 1); /* LA32 */ 491 data = FIELD_DP32(data, CPUCFG1, PGMMU, 1); 492 data = FIELD_DP32(data, CPUCFG1, IOCSR, 1); 493 data = FIELD_DP32(data, CPUCFG1, PALEN, 0x1f); /* 32 bits */ 494 data = FIELD_DP32(data, CPUCFG1, VALEN, 0x1f); /* 32 bits */ 495 data = FIELD_DP32(data, CPUCFG1, UAL, 1); 496 data = FIELD_DP32(data, CPUCFG1, RI, 0); 497 data = FIELD_DP32(data, CPUCFG1, EP, 0); 498 data = FIELD_DP32(data, CPUCFG1, RPLV, 0); 499 data = FIELD_DP32(data, CPUCFG1, HP, 1); 500 data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1); 501 env->cpucfg[1] = data; 502 } 503 504 static void loongarch_max_initfn(Object *obj) 505 { 506 /* '-cpu max' for TCG: we use cpu la464. */ 507 loongarch_la464_initfn(obj); 508 } 509 510 static void loongarch_cpu_reset_hold(Object *obj, ResetType type) 511 { 512 CPUState *cs = CPU(obj); 513 LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(obj); 514 CPULoongArchState *env = cpu_env(cs); 515 516 if (lacc->parent_phases.hold) { 517 lacc->parent_phases.hold(obj, type); 518 } 519 520 #ifdef CONFIG_TCG 521 env->fcsr0_mask = FCSR0_M1 | FCSR0_M2 | FCSR0_M3; 522 #endif 523 env->fcsr0 = 0x0; 524 525 int n; 526 /* Set csr registers value after reset, see the manual 6.4. */ 527 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0); 528 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0); 529 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DA, 1); 530 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PG, 0); 531 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATF, 0); 532 env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, DATM, 0); 533 534 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, FPE, 0); 535 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, SXE, 0); 536 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, ASXE, 0); 537 env->CSR_EUEN = FIELD_DP64(env->CSR_EUEN, CSR_EUEN, BTE, 0); 538 539 env->CSR_MISC = 0; 540 541 env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, VS, 0); 542 env->CSR_ECFG = FIELD_DP64(env->CSR_ECFG, CSR_ECFG, LIE, 0); 543 544 env->CSR_ESTAT = env->CSR_ESTAT & (~MAKE_64BIT_MASK(0, 2)); 545 env->CSR_RVACFG = FIELD_DP64(env->CSR_RVACFG, CSR_RVACFG, RBITS, 0); 546 env->CSR_CPUID = cs->cpu_index; 547 env->CSR_TCFG = FIELD_DP64(env->CSR_TCFG, CSR_TCFG, EN, 0); 548 env->CSR_LLBCTL = FIELD_DP64(env->CSR_LLBCTL, CSR_LLBCTL, KLO, 0); 549 env->CSR_TLBRERA = FIELD_DP64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR, 0); 550 env->CSR_MERRCTL = FIELD_DP64(env->CSR_MERRCTL, CSR_MERRCTL, ISMERR, 0); 551 env->CSR_TID = cs->cpu_index; 552 /* 553 * Workaround for edk2-stable202408, CSR PGD register is set only if 554 * its value is equal to zero for boot cpu, it causes reboot issue. 555 * 556 * Here clear CSR registers relative with TLB. 557 */ 558 env->CSR_PGDH = 0; 559 env->CSR_PGDL = 0; 560 env->CSR_PWCL = 0; 561 env->CSR_PWCH = 0; 562 env->CSR_STLBPS = 0; 563 env->CSR_EENTRY = 0; 564 env->CSR_TLBRENTRY = 0; 565 env->CSR_MERRENTRY = 0; 566 567 for (n = 0; n < 4; n++) { 568 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV0, 0); 569 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV1, 0); 570 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV2, 0); 571 env->CSR_DMW[n] = FIELD_DP64(env->CSR_DMW[n], CSR_DMW, PLV3, 0); 572 } 573 574 #ifndef CONFIG_USER_ONLY 575 env->pc = 0x1c000000; 576 #ifdef CONFIG_TCG 577 memset(env->tlb, 0, sizeof(env->tlb)); 578 #endif 579 if (kvm_enabled()) { 580 kvm_arch_reset_vcpu(cs); 581 } 582 #endif 583 584 #ifdef CONFIG_TCG 585 restore_fp_status(env); 586 #endif 587 cs->exception_index = -1; 588 } 589 590 static void loongarch_cpu_disas_set_info(CPUState *s, disassemble_info *info) 591 { 592 info->print_insn = print_insn_loongarch; 593 } 594 595 static void loongarch_cpu_realizefn(DeviceState *dev, Error **errp) 596 { 597 CPUState *cs = CPU(dev); 598 LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(dev); 599 Error *local_err = NULL; 600 601 cpu_exec_realizefn(cs, &local_err); 602 if (local_err != NULL) { 603 error_propagate(errp, local_err); 604 return; 605 } 606 607 loongarch_cpu_register_gdb_regs_for_features(cs); 608 609 cpu_reset(cs); 610 qemu_init_vcpu(cs); 611 612 lacc->parent_realize(dev, errp); 613 } 614 615 static bool loongarch_get_lsx(Object *obj, Error **errp) 616 { 617 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 618 bool ret; 619 620 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { 621 ret = true; 622 } else { 623 ret = false; 624 } 625 return ret; 626 } 627 628 static void loongarch_set_lsx(Object *obj, bool value, Error **errp) 629 { 630 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 631 632 if (value) { 633 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 1); 634 } else { 635 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 0); 636 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 0); 637 } 638 } 639 640 static bool loongarch_get_lasx(Object *obj, Error **errp) 641 { 642 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 643 bool ret; 644 645 if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LASX)) { 646 ret = true; 647 } else { 648 ret = false; 649 } 650 return ret; 651 } 652 653 static void loongarch_set_lasx(Object *obj, bool value, Error **errp) 654 { 655 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 656 657 if (value) { 658 if (!FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { 659 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LSX, 1); 660 } 661 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 1); 662 } else { 663 cpu->env.cpucfg[2] = FIELD_DP32(cpu->env.cpucfg[2], CPUCFG2, LASX, 0); 664 } 665 } 666 667 static bool loongarch_get_lbt(Object *obj, Error **errp) 668 { 669 return LOONGARCH_CPU(obj)->lbt != ON_OFF_AUTO_OFF; 670 } 671 672 static void loongarch_set_lbt(Object *obj, bool value, Error **errp) 673 { 674 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 675 676 cpu->lbt = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF; 677 } 678 679 static bool loongarch_get_pmu(Object *obj, Error **errp) 680 { 681 return LOONGARCH_CPU(obj)->pmu != ON_OFF_AUTO_OFF; 682 } 683 684 static void loongarch_set_pmu(Object *obj, bool value, Error **errp) 685 { 686 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 687 688 cpu->pmu = value ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF; 689 } 690 691 void loongarch_cpu_post_init(Object *obj) 692 { 693 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 694 695 object_property_add_bool(obj, "lsx", loongarch_get_lsx, 696 loongarch_set_lsx); 697 object_property_add_bool(obj, "lasx", loongarch_get_lasx, 698 loongarch_set_lasx); 699 /* lbt is enabled only in kvm mode, not supported in tcg mode */ 700 if (kvm_enabled()) { 701 cpu->lbt = ON_OFF_AUTO_AUTO; 702 object_property_add_bool(obj, "lbt", loongarch_get_lbt, 703 loongarch_set_lbt); 704 object_property_set_description(obj, "lbt", 705 "Set off to disable Binary Tranlation."); 706 707 cpu->pmu = ON_OFF_AUTO_AUTO; 708 object_property_add_bool(obj, "pmu", loongarch_get_pmu, 709 loongarch_set_pmu); 710 object_property_set_description(obj, "pmu", 711 "Set off to performance monitor unit."); 712 713 } else { 714 cpu->lbt = ON_OFF_AUTO_OFF; 715 } 716 } 717 718 static void loongarch_cpu_init(Object *obj) 719 { 720 #ifndef CONFIG_USER_ONLY 721 LoongArchCPU *cpu = LOONGARCH_CPU(obj); 722 723 qdev_init_gpio_in(DEVICE(cpu), loongarch_cpu_set_irq, N_IRQS); 724 #ifdef CONFIG_TCG 725 timer_init_ns(&cpu->timer, QEMU_CLOCK_VIRTUAL, 726 &loongarch_constant_timer_cb, cpu); 727 #endif 728 #endif 729 } 730 731 static ObjectClass *loongarch_cpu_class_by_name(const char *cpu_model) 732 { 733 ObjectClass *oc; 734 735 oc = object_class_by_name(cpu_model); 736 if (!oc) { 737 g_autofree char *typename 738 = g_strdup_printf(LOONGARCH_CPU_TYPE_NAME("%s"), cpu_model); 739 oc = object_class_by_name(typename); 740 } 741 742 return oc; 743 } 744 745 void loongarch_cpu_dump_state(CPUState *cs, FILE *f, int flags) 746 { 747 CPULoongArchState *env = cpu_env(cs); 748 int i; 749 750 qemu_fprintf(f, " PC=%016" PRIx64 " ", env->pc); 751 qemu_fprintf(f, " FCSR0 0x%08x\n", env->fcsr0); 752 753 /* gpr */ 754 for (i = 0; i < 32; i++) { 755 if ((i & 3) == 0) { 756 qemu_fprintf(f, " GPR%02d:", i); 757 } 758 qemu_fprintf(f, " %s %016" PRIx64, regnames[i], env->gpr[i]); 759 if ((i & 3) == 3) { 760 qemu_fprintf(f, "\n"); 761 } 762 } 763 764 qemu_fprintf(f, "CRMD=%016" PRIx64 "\n", env->CSR_CRMD); 765 qemu_fprintf(f, "PRMD=%016" PRIx64 "\n", env->CSR_PRMD); 766 qemu_fprintf(f, "EUEN=%016" PRIx64 "\n", env->CSR_EUEN); 767 qemu_fprintf(f, "ESTAT=%016" PRIx64 "\n", env->CSR_ESTAT); 768 qemu_fprintf(f, "ERA=%016" PRIx64 "\n", env->CSR_ERA); 769 qemu_fprintf(f, "BADV=%016" PRIx64 "\n", env->CSR_BADV); 770 qemu_fprintf(f, "BADI=%016" PRIx64 "\n", env->CSR_BADI); 771 qemu_fprintf(f, "EENTRY=%016" PRIx64 "\n", env->CSR_EENTRY); 772 qemu_fprintf(f, "PRCFG1=%016" PRIx64 ", PRCFG2=%016" PRIx64 "," 773 " PRCFG3=%016" PRIx64 "\n", 774 env->CSR_PRCFG1, env->CSR_PRCFG2, env->CSR_PRCFG3); 775 qemu_fprintf(f, "TLBRENTRY=%016" PRIx64 "\n", env->CSR_TLBRENTRY); 776 qemu_fprintf(f, "TLBRBADV=%016" PRIx64 "\n", env->CSR_TLBRBADV); 777 qemu_fprintf(f, "TLBRERA=%016" PRIx64 "\n", env->CSR_TLBRERA); 778 qemu_fprintf(f, "TCFG=%016" PRIx64 "\n", env->CSR_TCFG); 779 qemu_fprintf(f, "TVAL=%016" PRIx64 "\n", env->CSR_TVAL); 780 781 /* fpr */ 782 if (flags & CPU_DUMP_FPU) { 783 for (i = 0; i < 32; i++) { 784 qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i].vreg.D(0)); 785 if ((i & 3) == 3) { 786 qemu_fprintf(f, "\n"); 787 } 788 } 789 } 790 } 791 792 #ifdef CONFIG_TCG 793 #include "hw/core/tcg-cpu-ops.h" 794 795 static const TCGCPUOps loongarch_tcg_ops = { 796 .initialize = loongarch_translate_init, 797 .synchronize_from_tb = loongarch_cpu_synchronize_from_tb, 798 .restore_state_to_opc = loongarch_restore_state_to_opc, 799 800 #ifndef CONFIG_USER_ONLY 801 .tlb_fill = loongarch_cpu_tlb_fill, 802 .cpu_exec_interrupt = loongarch_cpu_exec_interrupt, 803 .cpu_exec_halt = loongarch_cpu_has_work, 804 .do_interrupt = loongarch_cpu_do_interrupt, 805 .do_transaction_failed = loongarch_cpu_do_transaction_failed, 806 #endif 807 }; 808 #endif /* CONFIG_TCG */ 809 810 #ifndef CONFIG_USER_ONLY 811 #include "hw/core/sysemu-cpu-ops.h" 812 813 static const struct SysemuCPUOps loongarch_sysemu_ops = { 814 .write_elf64_note = loongarch_cpu_write_elf64_note, 815 .get_phys_page_debug = loongarch_cpu_get_phys_page_debug, 816 }; 817 818 static int64_t loongarch_cpu_get_arch_id(CPUState *cs) 819 { 820 LoongArchCPU *cpu = LOONGARCH_CPU(cs); 821 822 return cpu->phy_id; 823 } 824 #endif 825 826 static void loongarch_cpu_class_init(ObjectClass *c, void *data) 827 { 828 LoongArchCPUClass *lacc = LOONGARCH_CPU_CLASS(c); 829 CPUClass *cc = CPU_CLASS(c); 830 DeviceClass *dc = DEVICE_CLASS(c); 831 ResettableClass *rc = RESETTABLE_CLASS(c); 832 833 device_class_set_parent_realize(dc, loongarch_cpu_realizefn, 834 &lacc->parent_realize); 835 resettable_class_set_parent_phases(rc, NULL, loongarch_cpu_reset_hold, NULL, 836 &lacc->parent_phases); 837 838 cc->class_by_name = loongarch_cpu_class_by_name; 839 cc->has_work = loongarch_cpu_has_work; 840 cc->mmu_index = loongarch_cpu_mmu_index; 841 cc->dump_state = loongarch_cpu_dump_state; 842 cc->set_pc = loongarch_cpu_set_pc; 843 cc->get_pc = loongarch_cpu_get_pc; 844 #ifndef CONFIG_USER_ONLY 845 cc->get_arch_id = loongarch_cpu_get_arch_id; 846 dc->vmsd = &vmstate_loongarch_cpu; 847 cc->sysemu_ops = &loongarch_sysemu_ops; 848 #endif 849 cc->disas_set_info = loongarch_cpu_disas_set_info; 850 cc->gdb_read_register = loongarch_cpu_gdb_read_register; 851 cc->gdb_write_register = loongarch_cpu_gdb_write_register; 852 cc->gdb_stop_before_watchpoint = true; 853 854 #ifdef CONFIG_TCG 855 cc->tcg_ops = &loongarch_tcg_ops; 856 #endif 857 } 858 859 static const gchar *loongarch32_gdb_arch_name(CPUState *cs) 860 { 861 return "loongarch32"; 862 } 863 864 static void loongarch32_cpu_class_init(ObjectClass *c, void *data) 865 { 866 CPUClass *cc = CPU_CLASS(c); 867 868 cc->gdb_core_xml_file = "loongarch-base32.xml"; 869 cc->gdb_arch_name = loongarch32_gdb_arch_name; 870 } 871 872 static const gchar *loongarch64_gdb_arch_name(CPUState *cs) 873 { 874 return "loongarch64"; 875 } 876 877 static void loongarch64_cpu_class_init(ObjectClass *c, void *data) 878 { 879 CPUClass *cc = CPU_CLASS(c); 880 881 cc->gdb_core_xml_file = "loongarch-base64.xml"; 882 cc->gdb_arch_name = loongarch64_gdb_arch_name; 883 } 884 885 #define DEFINE_LOONGARCH_CPU_TYPE(size, model, initfn) \ 886 { \ 887 .parent = TYPE_LOONGARCH##size##_CPU, \ 888 .instance_init = initfn, \ 889 .name = LOONGARCH_CPU_TYPE_NAME(model), \ 890 } 891 892 static const TypeInfo loongarch_cpu_type_infos[] = { 893 { 894 .name = TYPE_LOONGARCH_CPU, 895 .parent = TYPE_CPU, 896 .instance_size = sizeof(LoongArchCPU), 897 .instance_align = __alignof(LoongArchCPU), 898 .instance_init = loongarch_cpu_init, 899 900 .abstract = true, 901 .class_size = sizeof(LoongArchCPUClass), 902 .class_init = loongarch_cpu_class_init, 903 }, 904 { 905 .name = TYPE_LOONGARCH32_CPU, 906 .parent = TYPE_LOONGARCH_CPU, 907 908 .abstract = true, 909 .class_init = loongarch32_cpu_class_init, 910 }, 911 { 912 .name = TYPE_LOONGARCH64_CPU, 913 .parent = TYPE_LOONGARCH_CPU, 914 915 .abstract = true, 916 .class_init = loongarch64_cpu_class_init, 917 }, 918 DEFINE_LOONGARCH_CPU_TYPE(64, "la464", loongarch_la464_initfn), 919 DEFINE_LOONGARCH_CPU_TYPE(32, "la132", loongarch_la132_initfn), 920 DEFINE_LOONGARCH_CPU_TYPE(64, "max", loongarch_max_initfn), 921 }; 922 923 DEFINE_TYPES(loongarch_cpu_type_infos) 924