1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Contains CPU specific errata definitions 4 * 5 * Copyright (C) 2014 ARM Ltd. 6 */ 7 8 #include <linux/arm-smccc.h> 9 #include <linux/types.h> 10 #include <linux/cpu.h> 11 #include <asm/cpu.h> 12 #include <asm/cputype.h> 13 #include <asm/cpufeature.h> 14 #include <asm/kvm_asm.h> 15 #include <asm/smp_plat.h> 16 17 static bool __maybe_unused 18 is_affected_midr_range(const struct arm64_cpu_capabilities *entry, int scope) 19 { 20 const struct arm64_midr_revidr *fix; 21 u32 midr = read_cpuid_id(), revidr; 22 23 WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); 24 if (!is_midr_in_range(midr, &entry->midr_range)) 25 return false; 26 27 midr &= MIDR_REVISION_MASK | MIDR_VARIANT_MASK; 28 revidr = read_cpuid(REVIDR_EL1); 29 for (fix = entry->fixed_revs; fix && fix->revidr_mask; fix++) 30 if (midr == fix->midr_rv && (revidr & fix->revidr_mask)) 31 return false; 32 33 return true; 34 } 35 36 static bool __maybe_unused 37 is_affected_midr_range_list(const struct arm64_cpu_capabilities *entry, 38 int scope) 39 { 40 WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); 41 return is_midr_in_range_list(read_cpuid_id(), entry->midr_range_list); 42 } 43 44 static bool __maybe_unused 45 is_kryo_midr(const struct arm64_cpu_capabilities *entry, int scope) 46 { 47 u32 model; 48 49 WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); 50 51 model = read_cpuid_id(); 52 model &= MIDR_IMPLEMENTOR_MASK | (0xf00 << MIDR_PARTNUM_SHIFT) | 53 MIDR_ARCHITECTURE_MASK; 54 55 return model == entry->midr_range.model; 56 } 57 58 static bool 59 has_mismatched_cache_type(const struct arm64_cpu_capabilities *entry, 60 int scope) 61 { 62 u64 mask = arm64_ftr_reg_ctrel0.strict_mask; 63 u64 sys = arm64_ftr_reg_ctrel0.sys_val & mask; 64 u64 ctr_raw, ctr_real; 65 66 WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); 67 68 /* 69 * We want to make sure that all the CPUs in the system expose 70 * a consistent CTR_EL0 to make sure that applications behaves 71 * correctly with migration. 72 * 73 * If a CPU has CTR_EL0.IDC but does not advertise it via CTR_EL0 : 74 * 75 * 1) It is safe if the system doesn't support IDC, as CPU anyway 76 * reports IDC = 0, consistent with the rest. 77 * 78 * 2) If the system has IDC, it is still safe as we trap CTR_EL0 79 * access on this CPU via the ARM64_HAS_CACHE_IDC capability. 80 * 81 * So, we need to make sure either the raw CTR_EL0 or the effective 82 * CTR_EL0 matches the system's copy to allow a secondary CPU to boot. 83 */ 84 ctr_raw = read_cpuid_cachetype() & mask; 85 ctr_real = read_cpuid_effective_cachetype() & mask; 86 87 return (ctr_real != sys) && (ctr_raw != sys); 88 } 89 90 static void 91 cpu_enable_trap_ctr_access(const struct arm64_cpu_capabilities *cap) 92 { 93 u64 mask = arm64_ftr_reg_ctrel0.strict_mask; 94 bool enable_uct_trap = false; 95 96 /* Trap CTR_EL0 access on this CPU, only if it has a mismatch */ 97 if ((read_cpuid_cachetype() & mask) != 98 (arm64_ftr_reg_ctrel0.sys_val & mask)) 99 enable_uct_trap = true; 100 101 /* ... or if the system is affected by an erratum */ 102 if (cap->capability == ARM64_WORKAROUND_1542419) 103 enable_uct_trap = true; 104 105 if (enable_uct_trap) 106 sysreg_clear_set(sctlr_el1, SCTLR_EL1_UCT, 0); 107 } 108 109 #ifdef CONFIG_ARM64_ERRATUM_1463225 110 static bool 111 has_cortex_a76_erratum_1463225(const struct arm64_cpu_capabilities *entry, 112 int scope) 113 { 114 return is_affected_midr_range_list(entry, scope) && is_kernel_in_hyp_mode(); 115 } 116 #endif 117 118 static void __maybe_unused 119 cpu_enable_cache_maint_trap(const struct arm64_cpu_capabilities *__unused) 120 { 121 sysreg_clear_set(sctlr_el1, SCTLR_EL1_UCI, 0); 122 } 123 124 static DEFINE_RAW_SPINLOCK(reg_user_mask_modification); 125 static void __maybe_unused 126 cpu_clear_bf16_from_user_emulation(const struct arm64_cpu_capabilities *__unused) 127 { 128 struct arm64_ftr_reg *regp; 129 130 regp = get_arm64_ftr_reg(SYS_ID_AA64ISAR1_EL1); 131 if (!regp) 132 return; 133 134 raw_spin_lock(®_user_mask_modification); 135 if (regp->user_mask & ID_AA64ISAR1_EL1_BF16_MASK) 136 regp->user_mask &= ~ID_AA64ISAR1_EL1_BF16_MASK; 137 raw_spin_unlock(®_user_mask_modification); 138 } 139 140 #define CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \ 141 .matches = is_affected_midr_range, \ 142 .midr_range = MIDR_RANGE(model, v_min, r_min, v_max, r_max) 143 144 #define CAP_MIDR_ALL_VERSIONS(model) \ 145 .matches = is_affected_midr_range, \ 146 .midr_range = MIDR_ALL_VERSIONS(model) 147 148 #define MIDR_FIXED(rev, revidr_mask) \ 149 .fixed_revs = (struct arm64_midr_revidr[]){{ (rev), (revidr_mask) }, {}} 150 151 #define ERRATA_MIDR_RANGE(model, v_min, r_min, v_max, r_max) \ 152 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ 153 CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max) 154 155 #define CAP_MIDR_RANGE_LIST(list) \ 156 .matches = is_affected_midr_range_list, \ 157 .midr_range_list = list 158 159 /* Errata affecting a range of revisions of given model variant */ 160 #define ERRATA_MIDR_REV_RANGE(m, var, r_min, r_max) \ 161 ERRATA_MIDR_RANGE(m, var, r_min, var, r_max) 162 163 /* Errata affecting a single variant/revision of a model */ 164 #define ERRATA_MIDR_REV(model, var, rev) \ 165 ERRATA_MIDR_RANGE(model, var, rev, var, rev) 166 167 /* Errata affecting all variants/revisions of a given a model */ 168 #define ERRATA_MIDR_ALL_VERSIONS(model) \ 169 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ 170 CAP_MIDR_ALL_VERSIONS(model) 171 172 /* Errata affecting a list of midr ranges, with same work around */ 173 #define ERRATA_MIDR_RANGE_LIST(midr_list) \ 174 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \ 175 CAP_MIDR_RANGE_LIST(midr_list) 176 177 static const __maybe_unused struct midr_range tx2_family_cpus[] = { 178 MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN), 179 MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2), 180 {}, 181 }; 182 183 static bool __maybe_unused 184 needs_tx2_tvm_workaround(const struct arm64_cpu_capabilities *entry, 185 int scope) 186 { 187 int i; 188 189 if (!is_affected_midr_range_list(entry, scope) || 190 !is_hyp_mode_available()) 191 return false; 192 193 for_each_possible_cpu(i) { 194 if (MPIDR_AFFINITY_LEVEL(cpu_logical_map(i), 0) != 0) 195 return true; 196 } 197 198 return false; 199 } 200 201 static bool __maybe_unused 202 has_neoverse_n1_erratum_1542419(const struct arm64_cpu_capabilities *entry, 203 int scope) 204 { 205 u32 midr = read_cpuid_id(); 206 bool has_dic = read_cpuid_cachetype() & BIT(CTR_EL0_DIC_SHIFT); 207 const struct midr_range range = MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1); 208 209 WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible()); 210 return is_midr_in_range(midr, &range) && has_dic; 211 } 212 213 #ifdef CONFIG_ARM64_WORKAROUND_REPEAT_TLBI 214 static const struct arm64_cpu_capabilities arm64_repeat_tlbi_list[] = { 215 #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1009 216 { 217 ERRATA_MIDR_REV(MIDR_QCOM_FALKOR_V1, 0, 0) 218 }, 219 { 220 .midr_range.model = MIDR_QCOM_KRYO, 221 .matches = is_kryo_midr, 222 }, 223 #endif 224 #ifdef CONFIG_ARM64_ERRATUM_1286807 225 { 226 ERRATA_MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 3, 0), 227 }, 228 { 229 /* Kryo4xx Gold (rcpe to rfpe) => (r0p0 to r3p0) */ 230 ERRATA_MIDR_RANGE(MIDR_QCOM_KRYO_4XX_GOLD, 0xc, 0xe, 0xf, 0xe), 231 }, 232 #endif 233 #ifdef CONFIG_ARM64_ERRATUM_2441007 234 { 235 ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A55), 236 }, 237 #endif 238 #ifdef CONFIG_ARM64_ERRATUM_2441009 239 { 240 /* Cortex-A510 r0p0 -> r1p1. Fixed in r1p2 */ 241 ERRATA_MIDR_RANGE(MIDR_CORTEX_A510, 0, 0, 1, 1), 242 }, 243 #endif 244 {}, 245 }; 246 #endif 247 248 #ifdef CONFIG_CAVIUM_ERRATUM_23154 249 static const struct midr_range cavium_erratum_23154_cpus[] = { 250 MIDR_ALL_VERSIONS(MIDR_THUNDERX), 251 MIDR_ALL_VERSIONS(MIDR_THUNDERX_81XX), 252 MIDR_ALL_VERSIONS(MIDR_THUNDERX_83XX), 253 MIDR_ALL_VERSIONS(MIDR_OCTX2_98XX), 254 MIDR_ALL_VERSIONS(MIDR_OCTX2_96XX), 255 MIDR_ALL_VERSIONS(MIDR_OCTX2_95XX), 256 MIDR_ALL_VERSIONS(MIDR_OCTX2_95XXN), 257 MIDR_ALL_VERSIONS(MIDR_OCTX2_95XXMM), 258 MIDR_ALL_VERSIONS(MIDR_OCTX2_95XXO), 259 {}, 260 }; 261 #endif 262 263 #ifdef CONFIG_CAVIUM_ERRATUM_27456 264 const struct midr_range cavium_erratum_27456_cpus[] = { 265 /* Cavium ThunderX, T88 pass 1.x - 2.1 */ 266 MIDR_RANGE(MIDR_THUNDERX, 0, 0, 1, 1), 267 /* Cavium ThunderX, T81 pass 1.0 */ 268 MIDR_REV(MIDR_THUNDERX_81XX, 0, 0), 269 {}, 270 }; 271 #endif 272 273 #ifdef CONFIG_CAVIUM_ERRATUM_30115 274 static const struct midr_range cavium_erratum_30115_cpus[] = { 275 /* Cavium ThunderX, T88 pass 1.x - 2.2 */ 276 MIDR_RANGE(MIDR_THUNDERX, 0, 0, 1, 2), 277 /* Cavium ThunderX, T81 pass 1.0 - 1.2 */ 278 MIDR_REV_RANGE(MIDR_THUNDERX_81XX, 0, 0, 2), 279 /* Cavium ThunderX, T83 pass 1.0 */ 280 MIDR_REV(MIDR_THUNDERX_83XX, 0, 0), 281 {}, 282 }; 283 #endif 284 285 #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 286 static const struct arm64_cpu_capabilities qcom_erratum_1003_list[] = { 287 { 288 ERRATA_MIDR_REV(MIDR_QCOM_FALKOR_V1, 0, 0), 289 }, 290 { 291 .midr_range.model = MIDR_QCOM_KRYO, 292 .matches = is_kryo_midr, 293 }, 294 {}, 295 }; 296 #endif 297 298 #ifdef CONFIG_ARM64_WORKAROUND_CLEAN_CACHE 299 static const struct midr_range workaround_clean_cache[] = { 300 #if defined(CONFIG_ARM64_ERRATUM_826319) || \ 301 defined(CONFIG_ARM64_ERRATUM_827319) || \ 302 defined(CONFIG_ARM64_ERRATUM_824069) 303 /* Cortex-A53 r0p[012]: ARM errata 826319, 827319, 824069 */ 304 MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 2), 305 #endif 306 #ifdef CONFIG_ARM64_ERRATUM_819472 307 /* Cortex-A53 r0p[01] : ARM errata 819472 */ 308 MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 1), 309 #endif 310 {}, 311 }; 312 #endif 313 314 #ifdef CONFIG_ARM64_ERRATUM_1418040 315 /* 316 * - 1188873 affects r0p0 to r2p0 317 * - 1418040 affects r0p0 to r3p1 318 */ 319 static const struct midr_range erratum_1418040_list[] = { 320 /* Cortex-A76 r0p0 to r3p1 */ 321 MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 3, 1), 322 /* Neoverse-N1 r0p0 to r3p1 */ 323 MIDR_RANGE(MIDR_NEOVERSE_N1, 0, 0, 3, 1), 324 /* Kryo4xx Gold (rcpe to rfpf) => (r0p0 to r3p1) */ 325 MIDR_RANGE(MIDR_QCOM_KRYO_4XX_GOLD, 0xc, 0xe, 0xf, 0xf), 326 {}, 327 }; 328 #endif 329 330 #ifdef CONFIG_ARM64_ERRATUM_845719 331 static const struct midr_range erratum_845719_list[] = { 332 /* Cortex-A53 r0p[01234] */ 333 MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), 334 /* Brahma-B53 r0p[0] */ 335 MIDR_REV(MIDR_BRAHMA_B53, 0, 0), 336 /* Kryo2XX Silver rAp4 */ 337 MIDR_REV(MIDR_QCOM_KRYO_2XX_SILVER, 0xa, 0x4), 338 {}, 339 }; 340 #endif 341 342 #ifdef CONFIG_ARM64_ERRATUM_843419 343 static const struct arm64_cpu_capabilities erratum_843419_list[] = { 344 { 345 /* Cortex-A53 r0p[01234] */ 346 .matches = is_affected_midr_range, 347 ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), 348 MIDR_FIXED(0x4, BIT(8)), 349 }, 350 { 351 /* Brahma-B53 r0p[0] */ 352 .matches = is_affected_midr_range, 353 ERRATA_MIDR_REV(MIDR_BRAHMA_B53, 0, 0), 354 }, 355 {}, 356 }; 357 #endif 358 359 #ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT 360 static const struct midr_range erratum_speculative_at_list[] = { 361 #ifdef CONFIG_ARM64_ERRATUM_1165522 362 /* Cortex A76 r0p0 to r2p0 */ 363 MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 2, 0), 364 #endif 365 #ifdef CONFIG_ARM64_ERRATUM_1319367 366 MIDR_ALL_VERSIONS(MIDR_CORTEX_A57), 367 MIDR_ALL_VERSIONS(MIDR_CORTEX_A72), 368 #endif 369 #ifdef CONFIG_ARM64_ERRATUM_1530923 370 /* Cortex A55 r0p0 to r2p0 */ 371 MIDR_RANGE(MIDR_CORTEX_A55, 0, 0, 2, 0), 372 /* Kryo4xx Silver (rdpe => r1p0) */ 373 MIDR_REV(MIDR_QCOM_KRYO_4XX_SILVER, 0xd, 0xe), 374 #endif 375 {}, 376 }; 377 #endif 378 379 #ifdef CONFIG_ARM64_ERRATUM_1463225 380 static const struct midr_range erratum_1463225[] = { 381 /* Cortex-A76 r0p0 - r3p1 */ 382 MIDR_RANGE(MIDR_CORTEX_A76, 0, 0, 3, 1), 383 /* Kryo4xx Gold (rcpe to rfpf) => (r0p0 to r3p1) */ 384 MIDR_RANGE(MIDR_QCOM_KRYO_4XX_GOLD, 0xc, 0xe, 0xf, 0xf), 385 {}, 386 }; 387 #endif 388 389 #ifdef CONFIG_ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE 390 static const struct midr_range trbe_overwrite_fill_mode_cpus[] = { 391 #ifdef CONFIG_ARM64_ERRATUM_2139208 392 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), 393 #endif 394 #ifdef CONFIG_ARM64_ERRATUM_2119858 395 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), 396 MIDR_RANGE(MIDR_CORTEX_X2, 0, 0, 2, 0), 397 #endif 398 {}, 399 }; 400 #endif /* CONFIG_ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE */ 401 402 #ifdef CONFIG_ARM64_WORKAROUND_TSB_FLUSH_FAILURE 403 static const struct midr_range tsb_flush_fail_cpus[] = { 404 #ifdef CONFIG_ARM64_ERRATUM_2067961 405 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), 406 #endif 407 #ifdef CONFIG_ARM64_ERRATUM_2054223 408 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), 409 #endif 410 {}, 411 }; 412 #endif /* CONFIG_ARM64_WORKAROUND_TSB_FLUSH_FAILURE */ 413 414 #ifdef CONFIG_ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE 415 static struct midr_range trbe_write_out_of_range_cpus[] = { 416 #ifdef CONFIG_ARM64_ERRATUM_2253138 417 MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), 418 #endif 419 #ifdef CONFIG_ARM64_ERRATUM_2224489 420 MIDR_ALL_VERSIONS(MIDR_CORTEX_A710), 421 MIDR_RANGE(MIDR_CORTEX_X2, 0, 0, 2, 0), 422 #endif 423 {}, 424 }; 425 #endif /* CONFIG_ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE */ 426 427 #ifdef CONFIG_ARM64_ERRATUM_1742098 428 static struct midr_range broken_aarch32_aes[] = { 429 MIDR_RANGE(MIDR_CORTEX_A57, 0, 1, 0xf, 0xf), 430 MIDR_ALL_VERSIONS(MIDR_CORTEX_A72), 431 {}, 432 }; 433 #endif /* CONFIG_ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE */ 434 435 const struct arm64_cpu_capabilities arm64_errata[] = { 436 #ifdef CONFIG_ARM64_WORKAROUND_CLEAN_CACHE 437 { 438 .desc = "ARM errata 826319, 827319, 824069, or 819472", 439 .capability = ARM64_WORKAROUND_CLEAN_CACHE, 440 ERRATA_MIDR_RANGE_LIST(workaround_clean_cache), 441 .cpu_enable = cpu_enable_cache_maint_trap, 442 }, 443 #endif 444 #ifdef CONFIG_ARM64_ERRATUM_832075 445 { 446 /* Cortex-A57 r0p0 - r1p2 */ 447 .desc = "ARM erratum 832075", 448 .capability = ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE, 449 ERRATA_MIDR_RANGE(MIDR_CORTEX_A57, 450 0, 0, 451 1, 2), 452 }, 453 #endif 454 #ifdef CONFIG_ARM64_ERRATUM_834220 455 { 456 /* Cortex-A57 r0p0 - r1p2 */ 457 .desc = "ARM erratum 834220", 458 .capability = ARM64_WORKAROUND_834220, 459 ERRATA_MIDR_RANGE(MIDR_CORTEX_A57, 460 0, 0, 461 1, 2), 462 }, 463 #endif 464 #ifdef CONFIG_ARM64_ERRATUM_843419 465 { 466 .desc = "ARM erratum 843419", 467 .capability = ARM64_WORKAROUND_843419, 468 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 469 .matches = cpucap_multi_entry_cap_matches, 470 .match_list = erratum_843419_list, 471 }, 472 #endif 473 #ifdef CONFIG_ARM64_ERRATUM_845719 474 { 475 .desc = "ARM erratum 845719", 476 .capability = ARM64_WORKAROUND_845719, 477 ERRATA_MIDR_RANGE_LIST(erratum_845719_list), 478 }, 479 #endif 480 #ifdef CONFIG_CAVIUM_ERRATUM_23154 481 { 482 .desc = "Cavium errata 23154 and 38545", 483 .capability = ARM64_WORKAROUND_CAVIUM_23154, 484 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 485 ERRATA_MIDR_RANGE_LIST(cavium_erratum_23154_cpus), 486 }, 487 #endif 488 #ifdef CONFIG_CAVIUM_ERRATUM_27456 489 { 490 .desc = "Cavium erratum 27456", 491 .capability = ARM64_WORKAROUND_CAVIUM_27456, 492 ERRATA_MIDR_RANGE_LIST(cavium_erratum_27456_cpus), 493 }, 494 #endif 495 #ifdef CONFIG_CAVIUM_ERRATUM_30115 496 { 497 .desc = "Cavium erratum 30115", 498 .capability = ARM64_WORKAROUND_CAVIUM_30115, 499 ERRATA_MIDR_RANGE_LIST(cavium_erratum_30115_cpus), 500 }, 501 #endif 502 { 503 .desc = "Mismatched cache type (CTR_EL0)", 504 .capability = ARM64_MISMATCHED_CACHE_TYPE, 505 .matches = has_mismatched_cache_type, 506 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 507 .cpu_enable = cpu_enable_trap_ctr_access, 508 }, 509 #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003 510 { 511 .desc = "Qualcomm Technologies Falkor/Kryo erratum 1003", 512 .capability = ARM64_WORKAROUND_QCOM_FALKOR_E1003, 513 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 514 .matches = cpucap_multi_entry_cap_matches, 515 .match_list = qcom_erratum_1003_list, 516 }, 517 #endif 518 #ifdef CONFIG_ARM64_WORKAROUND_REPEAT_TLBI 519 { 520 .desc = "Qualcomm erratum 1009, or ARM erratum 1286807, 2441009", 521 .capability = ARM64_WORKAROUND_REPEAT_TLBI, 522 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 523 .matches = cpucap_multi_entry_cap_matches, 524 .match_list = arm64_repeat_tlbi_list, 525 }, 526 #endif 527 #ifdef CONFIG_ARM64_ERRATUM_858921 528 { 529 /* Cortex-A73 all versions */ 530 .desc = "ARM erratum 858921", 531 .capability = ARM64_WORKAROUND_858921, 532 ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A73), 533 }, 534 #endif 535 { 536 .desc = "Spectre-v2", 537 .capability = ARM64_SPECTRE_V2, 538 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 539 .matches = has_spectre_v2, 540 .cpu_enable = spectre_v2_enable_mitigation, 541 }, 542 #ifdef CONFIG_RANDOMIZE_BASE 543 { 544 /* Must come after the Spectre-v2 entry */ 545 .desc = "Spectre-v3a", 546 .capability = ARM64_SPECTRE_V3A, 547 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 548 .matches = has_spectre_v3a, 549 .cpu_enable = spectre_v3a_enable_mitigation, 550 }, 551 #endif 552 { 553 .desc = "Spectre-v4", 554 .capability = ARM64_SPECTRE_V4, 555 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 556 .matches = has_spectre_v4, 557 .cpu_enable = spectre_v4_enable_mitigation, 558 }, 559 { 560 .desc = "Spectre-BHB", 561 .capability = ARM64_SPECTRE_BHB, 562 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 563 .matches = is_spectre_bhb_affected, 564 .cpu_enable = spectre_bhb_enable_mitigation, 565 }, 566 #ifdef CONFIG_ARM64_ERRATUM_1418040 567 { 568 .desc = "ARM erratum 1418040", 569 .capability = ARM64_WORKAROUND_1418040, 570 ERRATA_MIDR_RANGE_LIST(erratum_1418040_list), 571 /* 572 * We need to allow affected CPUs to come in late, but 573 * also need the non-affected CPUs to be able to come 574 * in at any point in time. Wonderful. 575 */ 576 .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, 577 }, 578 #endif 579 #ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT 580 { 581 .desc = "ARM errata 1165522, 1319367, or 1530923", 582 .capability = ARM64_WORKAROUND_SPECULATIVE_AT, 583 ERRATA_MIDR_RANGE_LIST(erratum_speculative_at_list), 584 }, 585 #endif 586 #ifdef CONFIG_ARM64_ERRATUM_1463225 587 { 588 .desc = "ARM erratum 1463225", 589 .capability = ARM64_WORKAROUND_1463225, 590 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 591 .matches = has_cortex_a76_erratum_1463225, 592 .midr_range_list = erratum_1463225, 593 }, 594 #endif 595 #ifdef CONFIG_CAVIUM_TX2_ERRATUM_219 596 { 597 .desc = "Cavium ThunderX2 erratum 219 (KVM guest sysreg trapping)", 598 .capability = ARM64_WORKAROUND_CAVIUM_TX2_219_TVM, 599 ERRATA_MIDR_RANGE_LIST(tx2_family_cpus), 600 .matches = needs_tx2_tvm_workaround, 601 }, 602 { 603 .desc = "Cavium ThunderX2 erratum 219 (PRFM removal)", 604 .capability = ARM64_WORKAROUND_CAVIUM_TX2_219_PRFM, 605 ERRATA_MIDR_RANGE_LIST(tx2_family_cpus), 606 }, 607 #endif 608 #ifdef CONFIG_ARM64_ERRATUM_1542419 609 { 610 /* we depend on the firmware portion for correctness */ 611 .desc = "ARM erratum 1542419 (kernel portion)", 612 .capability = ARM64_WORKAROUND_1542419, 613 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 614 .matches = has_neoverse_n1_erratum_1542419, 615 .cpu_enable = cpu_enable_trap_ctr_access, 616 }, 617 #endif 618 #ifdef CONFIG_ARM64_ERRATUM_1508412 619 { 620 /* we depend on the firmware portion for correctness */ 621 .desc = "ARM erratum 1508412 (kernel portion)", 622 .capability = ARM64_WORKAROUND_1508412, 623 ERRATA_MIDR_RANGE(MIDR_CORTEX_A77, 624 0, 0, 625 1, 0), 626 }, 627 #endif 628 #ifdef CONFIG_NVIDIA_CARMEL_CNP_ERRATUM 629 { 630 /* NVIDIA Carmel */ 631 .desc = "NVIDIA Carmel CNP erratum", 632 .capability = ARM64_WORKAROUND_NVIDIA_CARMEL_CNP, 633 ERRATA_MIDR_ALL_VERSIONS(MIDR_NVIDIA_CARMEL), 634 }, 635 #endif 636 #ifdef CONFIG_ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE 637 { 638 /* 639 * The erratum work around is handled within the TRBE 640 * driver and can be applied per-cpu. So, we can allow 641 * a late CPU to come online with this erratum. 642 */ 643 .desc = "ARM erratum 2119858 or 2139208", 644 .capability = ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE, 645 .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, 646 CAP_MIDR_RANGE_LIST(trbe_overwrite_fill_mode_cpus), 647 }, 648 #endif 649 #ifdef CONFIG_ARM64_WORKAROUND_TSB_FLUSH_FAILURE 650 { 651 .desc = "ARM erratum 2067961 or 2054223", 652 .capability = ARM64_WORKAROUND_TSB_FLUSH_FAILURE, 653 ERRATA_MIDR_RANGE_LIST(tsb_flush_fail_cpus), 654 }, 655 #endif 656 #ifdef CONFIG_ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE 657 { 658 .desc = "ARM erratum 2253138 or 2224489", 659 .capability = ARM64_WORKAROUND_TRBE_WRITE_OUT_OF_RANGE, 660 .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, 661 CAP_MIDR_RANGE_LIST(trbe_write_out_of_range_cpus), 662 }, 663 #endif 664 #ifdef CONFIG_ARM64_ERRATUM_2645198 665 { 666 .desc = "ARM erratum 2645198", 667 .capability = ARM64_WORKAROUND_2645198, 668 ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A715) 669 }, 670 #endif 671 #ifdef CONFIG_ARM64_ERRATUM_2077057 672 { 673 .desc = "ARM erratum 2077057", 674 .capability = ARM64_WORKAROUND_2077057, 675 ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A510, 0, 0, 2), 676 }, 677 #endif 678 #ifdef CONFIG_ARM64_ERRATUM_2064142 679 { 680 .desc = "ARM erratum 2064142", 681 .capability = ARM64_WORKAROUND_2064142, 682 683 /* Cortex-A510 r0p0 - r0p2 */ 684 ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A510, 0, 0, 2) 685 }, 686 #endif 687 #ifdef CONFIG_ARM64_ERRATUM_2457168 688 { 689 .desc = "ARM erratum 2457168", 690 .capability = ARM64_WORKAROUND_2457168, 691 .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE, 692 693 /* Cortex-A510 r0p0-r1p1 */ 694 CAP_MIDR_RANGE(MIDR_CORTEX_A510, 0, 0, 1, 1) 695 }, 696 #endif 697 #ifdef CONFIG_ARM64_ERRATUM_2038923 698 { 699 .desc = "ARM erratum 2038923", 700 .capability = ARM64_WORKAROUND_2038923, 701 702 /* Cortex-A510 r0p0 - r0p2 */ 703 ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A510, 0, 0, 2) 704 }, 705 #endif 706 #ifdef CONFIG_ARM64_ERRATUM_1902691 707 { 708 .desc = "ARM erratum 1902691", 709 .capability = ARM64_WORKAROUND_1902691, 710 711 /* Cortex-A510 r0p0 - r0p1 */ 712 ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A510, 0, 0, 1) 713 }, 714 #endif 715 #ifdef CONFIG_ARM64_ERRATUM_1742098 716 { 717 .desc = "ARM erratum 1742098", 718 .capability = ARM64_WORKAROUND_1742098, 719 CAP_MIDR_RANGE_LIST(broken_aarch32_aes), 720 .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, 721 }, 722 #endif 723 #ifdef CONFIG_ARM64_ERRATUM_2658417 724 { 725 .desc = "ARM erratum 2658417", 726 .capability = ARM64_WORKAROUND_2658417, 727 /* Cortex-A510 r0p0 - r1p1 */ 728 ERRATA_MIDR_RANGE(MIDR_CORTEX_A510, 0, 0, 1, 1), 729 MIDR_FIXED(MIDR_CPU_VAR_REV(1,1), BIT(25)), 730 .cpu_enable = cpu_clear_bf16_from_user_emulation, 731 }, 732 #endif 733 #ifdef CONFIG_AMPERE_ERRATUM_AC03_CPU_38 734 { 735 .desc = "AmpereOne erratum AC03_CPU_38", 736 .capability = ARM64_WORKAROUND_AMPERE_AC03_CPU_38, 737 ERRATA_MIDR_ALL_VERSIONS(MIDR_AMPERE1), 738 }, 739 #endif 740 { 741 } 742 }; 743