1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2012 ARM Ltd. 4 */ 5 #ifndef __ASM_CPUTYPE_H 6 #define __ASM_CPUTYPE_H 7 8 #define INVALID_HWID ULONG_MAX 9 10 #define MPIDR_UP_BITMASK (0x1 << 30) 11 #define MPIDR_MT_BITMASK (0x1 << 24) 12 #define MPIDR_HWID_BITMASK UL(0xff00ffffff) 13 14 #define MPIDR_LEVEL_BITS_SHIFT 3 15 #define MPIDR_LEVEL_BITS (1 << MPIDR_LEVEL_BITS_SHIFT) 16 #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1) 17 18 #define MPIDR_LEVEL_SHIFT(level) \ 19 (((1 << level) >> 1) << MPIDR_LEVEL_BITS_SHIFT) 20 21 #define MPIDR_AFFINITY_LEVEL(mpidr, level) \ 22 ((mpidr >> MPIDR_LEVEL_SHIFT(level)) & MPIDR_LEVEL_MASK) 23 24 #define MIDR_REVISION_MASK 0xf 25 #define MIDR_REVISION(midr) ((midr) & MIDR_REVISION_MASK) 26 #define MIDR_PARTNUM_SHIFT 4 27 #define MIDR_PARTNUM_MASK (0xfff << MIDR_PARTNUM_SHIFT) 28 #define MIDR_PARTNUM(midr) \ 29 (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT) 30 #define MIDR_ARCHITECTURE_SHIFT 16 31 #define MIDR_ARCHITECTURE_MASK (0xf << MIDR_ARCHITECTURE_SHIFT) 32 #define MIDR_ARCHITECTURE(midr) \ 33 (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT) 34 #define MIDR_VARIANT_SHIFT 20 35 #define MIDR_VARIANT_MASK (0xf << MIDR_VARIANT_SHIFT) 36 #define MIDR_VARIANT(midr) \ 37 (((midr) & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT) 38 #define MIDR_IMPLEMENTOR_SHIFT 24 39 #define MIDR_IMPLEMENTOR_MASK (0xff << MIDR_IMPLEMENTOR_SHIFT) 40 #define MIDR_IMPLEMENTOR(midr) \ 41 (((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT) 42 43 #define MIDR_CPU_MODEL(imp, partnum) \ 44 (((imp) << MIDR_IMPLEMENTOR_SHIFT) | \ 45 (0xf << MIDR_ARCHITECTURE_SHIFT) | \ 46 ((partnum) << MIDR_PARTNUM_SHIFT)) 47 48 #define MIDR_CPU_VAR_REV(var, rev) \ 49 (((var) << MIDR_VARIANT_SHIFT) | (rev)) 50 51 #define MIDR_CPU_MODEL_MASK (MIDR_IMPLEMENTOR_MASK | MIDR_PARTNUM_MASK | \ 52 MIDR_ARCHITECTURE_MASK) 53 54 #define ARM_CPU_IMP_ARM 0x41 55 #define ARM_CPU_IMP_APM 0x50 56 #define ARM_CPU_IMP_CAVIUM 0x43 57 #define ARM_CPU_IMP_BRCM 0x42 58 #define ARM_CPU_IMP_QCOM 0x51 59 #define ARM_CPU_IMP_NVIDIA 0x4E 60 #define ARM_CPU_IMP_FUJITSU 0x46 61 #define ARM_CPU_IMP_HISI 0x48 62 63 #define ARM_CPU_PART_AEM_V8 0xD0F 64 #define ARM_CPU_PART_FOUNDATION 0xD00 65 #define ARM_CPU_PART_CORTEX_A57 0xD07 66 #define ARM_CPU_PART_CORTEX_A72 0xD08 67 #define ARM_CPU_PART_CORTEX_A53 0xD03 68 #define ARM_CPU_PART_CORTEX_A73 0xD09 69 #define ARM_CPU_PART_CORTEX_A75 0xD0A 70 #define ARM_CPU_PART_CORTEX_A35 0xD04 71 #define ARM_CPU_PART_CORTEX_A55 0xD05 72 #define ARM_CPU_PART_CORTEX_A76 0xD0B 73 #define ARM_CPU_PART_NEOVERSE_N1 0xD0C 74 75 #define APM_CPU_PART_POTENZA 0x000 76 77 #define CAVIUM_CPU_PART_THUNDERX 0x0A1 78 #define CAVIUM_CPU_PART_THUNDERX_81XX 0x0A2 79 #define CAVIUM_CPU_PART_THUNDERX_83XX 0x0A3 80 #define CAVIUM_CPU_PART_THUNDERX2 0x0AF 81 82 #define BRCM_CPU_PART_BRAHMA_B53 0x100 83 #define BRCM_CPU_PART_VULCAN 0x516 84 85 #define QCOM_CPU_PART_FALKOR_V1 0x800 86 #define QCOM_CPU_PART_FALKOR 0xC00 87 #define QCOM_CPU_PART_KRYO 0x200 88 #define QCOM_CPU_PART_KRYO_3XX_SILVER 0x803 89 #define QCOM_CPU_PART_KRYO_4XX_SILVER 0x805 90 91 #define NVIDIA_CPU_PART_DENVER 0x003 92 #define NVIDIA_CPU_PART_CARMEL 0x004 93 94 #define FUJITSU_CPU_PART_A64FX 0x001 95 96 #define HISI_CPU_PART_TSV110 0xD01 97 98 #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53) 99 #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57) 100 #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72) 101 #define MIDR_CORTEX_A73 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A73) 102 #define MIDR_CORTEX_A75 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A75) 103 #define MIDR_CORTEX_A35 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A35) 104 #define MIDR_CORTEX_A55 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A55) 105 #define MIDR_CORTEX_A76 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A76) 106 #define MIDR_NEOVERSE_N1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_N1) 107 #define MIDR_THUNDERX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX) 108 #define MIDR_THUNDERX_81XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_81XX) 109 #define MIDR_THUNDERX_83XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_83XX) 110 #define MIDR_CAVIUM_THUNDERX2 MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX2) 111 #define MIDR_BRAHMA_B53 MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_BRAHMA_B53) 112 #define MIDR_BRCM_VULCAN MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN) 113 #define MIDR_QCOM_FALKOR_V1 MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR_V1) 114 #define MIDR_QCOM_FALKOR MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR) 115 #define MIDR_QCOM_KRYO MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_KRYO) 116 #define MIDR_QCOM_KRYO_3XX_SILVER MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_KRYO_3XX_SILVER) 117 #define MIDR_QCOM_KRYO_4XX_SILVER MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_KRYO_4XX_SILVER) 118 #define MIDR_NVIDIA_DENVER MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_DENVER) 119 #define MIDR_NVIDIA_CARMEL MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_CARMEL) 120 #define MIDR_FUJITSU_A64FX MIDR_CPU_MODEL(ARM_CPU_IMP_FUJITSU, FUJITSU_CPU_PART_A64FX) 121 #define MIDR_HISI_TSV110 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_TSV110) 122 123 /* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */ 124 #define MIDR_FUJITSU_ERRATUM_010001 MIDR_FUJITSU_A64FX 125 #define MIDR_FUJITSU_ERRATUM_010001_MASK (~MIDR_CPU_VAR_REV(1, 0)) 126 #define TCR_CLEAR_FUJITSU_ERRATUM_010001 (TCR_NFD1 | TCR_NFD0) 127 128 #ifndef __ASSEMBLY__ 129 130 #include <asm/sysreg.h> 131 132 #define read_cpuid(reg) read_sysreg_s(SYS_ ## reg) 133 134 /* 135 * Represent a range of MIDR values for a given CPU model and a 136 * range of variant/revision values. 137 * 138 * @model - CPU model as defined by MIDR_CPU_MODEL 139 * @rv_min - Minimum value for the revision/variant as defined by 140 * MIDR_CPU_VAR_REV 141 * @rv_max - Maximum value for the variant/revision for the range. 142 */ 143 struct midr_range { 144 u32 model; 145 u32 rv_min; 146 u32 rv_max; 147 }; 148 149 #define MIDR_RANGE(m, v_min, r_min, v_max, r_max) \ 150 { \ 151 .model = m, \ 152 .rv_min = MIDR_CPU_VAR_REV(v_min, r_min), \ 153 .rv_max = MIDR_CPU_VAR_REV(v_max, r_max), \ 154 } 155 156 #define MIDR_REV_RANGE(m, v, r_min, r_max) MIDR_RANGE(m, v, r_min, v, r_max) 157 #define MIDR_REV(m, v, r) MIDR_RANGE(m, v, r, v, r) 158 #define MIDR_ALL_VERSIONS(m) MIDR_RANGE(m, 0, 0, 0xf, 0xf) 159 160 static inline bool midr_is_cpu_model_range(u32 midr, u32 model, u32 rv_min, 161 u32 rv_max) 162 { 163 u32 _model = midr & MIDR_CPU_MODEL_MASK; 164 u32 rv = midr & (MIDR_REVISION_MASK | MIDR_VARIANT_MASK); 165 166 return _model == model && rv >= rv_min && rv <= rv_max; 167 } 168 169 static inline bool is_midr_in_range(u32 midr, struct midr_range const *range) 170 { 171 return midr_is_cpu_model_range(midr, range->model, 172 range->rv_min, range->rv_max); 173 } 174 175 static inline bool 176 is_midr_in_range_list(u32 midr, struct midr_range const *ranges) 177 { 178 while (ranges->model) 179 if (is_midr_in_range(midr, ranges++)) 180 return true; 181 return false; 182 } 183 184 /* 185 * The CPU ID never changes at run time, so we might as well tell the 186 * compiler that it's constant. Use this function to read the CPU ID 187 * rather than directly reading processor_id or read_cpuid() directly. 188 */ 189 static inline u32 __attribute_const__ read_cpuid_id(void) 190 { 191 return read_cpuid(MIDR_EL1); 192 } 193 194 static inline u64 __attribute_const__ read_cpuid_mpidr(void) 195 { 196 return read_cpuid(MPIDR_EL1); 197 } 198 199 static inline unsigned int __attribute_const__ read_cpuid_implementor(void) 200 { 201 return MIDR_IMPLEMENTOR(read_cpuid_id()); 202 } 203 204 static inline unsigned int __attribute_const__ read_cpuid_part_number(void) 205 { 206 return MIDR_PARTNUM(read_cpuid_id()); 207 } 208 209 static inline u32 __attribute_const__ read_cpuid_cachetype(void) 210 { 211 return read_cpuid(CTR_EL0); 212 } 213 #endif /* __ASSEMBLY__ */ 214 215 #endif 216