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git.ipfire.org Git - thirdparty/linux.git/blob - arch/arm64/include/asm/cputype.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012 ARM Ltd.
5 #ifndef __ASM_CPUTYPE_H
6 #define __ASM_CPUTYPE_H
8 #define INVALID_HWID ULONG_MAX
10 #define MPIDR_UP_BITMASK (0x1 << 30)
11 #define MPIDR_MT_BITMASK (0x1 << 24)
12 #define MPIDR_HWID_BITMASK UL(0xff00ffffff)
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)
18 #define MPIDR_LEVEL_SHIFT(level) \
19 (((1 << level) >> 1) << MPIDR_LEVEL_BITS_SHIFT)
21 #define MPIDR_AFFINITY_LEVEL(mpidr, level) \
22 ((mpidr >> MPIDR_LEVEL_SHIFT(level)) & MPIDR_LEVEL_MASK)
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)
43 #define MIDR_CPU_MODEL(imp, partnum) \
44 (((imp) << MIDR_IMPLEMENTOR_SHIFT) | \
45 (0xf << MIDR_ARCHITECTURE_SHIFT) | \
46 ((partnum) << MIDR_PARTNUM_SHIFT))
48 #define MIDR_CPU_VAR_REV(var, rev) \
49 (((var) << MIDR_VARIANT_SHIFT) | (rev))
51 #define MIDR_CPU_MODEL_MASK (MIDR_IMPLEMENTOR_MASK | MIDR_PARTNUM_MASK | \
52 MIDR_ARCHITECTURE_MASK)
54 #define MIDR_IS_CPU_MODEL_RANGE(midr, model, rv_min, rv_max) \
56 u32 _model = (midr) & MIDR_CPU_MODEL_MASK; \
57 u32 rv = (midr) & (MIDR_REVISION_MASK | MIDR_VARIANT_MASK); \
59 _model == (model) && rv >= (rv_min) && rv <= (rv_max); \
62 #define ARM_CPU_IMP_ARM 0x41
63 #define ARM_CPU_IMP_APM 0x50
64 #define ARM_CPU_IMP_CAVIUM 0x43
65 #define ARM_CPU_IMP_BRCM 0x42
66 #define ARM_CPU_IMP_QCOM 0x51
67 #define ARM_CPU_IMP_NVIDIA 0x4E
68 #define ARM_CPU_IMP_FUJITSU 0x46
69 #define ARM_CPU_IMP_HISI 0x48
71 #define ARM_CPU_PART_AEM_V8 0xD0F
72 #define ARM_CPU_PART_FOUNDATION 0xD00
73 #define ARM_CPU_PART_CORTEX_A57 0xD07
74 #define ARM_CPU_PART_CORTEX_A72 0xD08
75 #define ARM_CPU_PART_CORTEX_A53 0xD03
76 #define ARM_CPU_PART_CORTEX_A73 0xD09
77 #define ARM_CPU_PART_CORTEX_A75 0xD0A
78 #define ARM_CPU_PART_CORTEX_A35 0xD04
79 #define ARM_CPU_PART_CORTEX_A55 0xD05
80 #define ARM_CPU_PART_CORTEX_A76 0xD0B
81 #define ARM_CPU_PART_NEOVERSE_N1 0xD0C
83 #define APM_CPU_PART_POTENZA 0x000
85 #define CAVIUM_CPU_PART_THUNDERX 0x0A1
86 #define CAVIUM_CPU_PART_THUNDERX_81XX 0x0A2
87 #define CAVIUM_CPU_PART_THUNDERX_83XX 0x0A3
88 #define CAVIUM_CPU_PART_THUNDERX2 0x0AF
90 #define BRCM_CPU_PART_VULCAN 0x516
92 #define QCOM_CPU_PART_FALKOR_V1 0x800
93 #define QCOM_CPU_PART_FALKOR 0xC00
94 #define QCOM_CPU_PART_KRYO 0x200
96 #define NVIDIA_CPU_PART_DENVER 0x003
97 #define NVIDIA_CPU_PART_CARMEL 0x004
99 #define FUJITSU_CPU_PART_A64FX 0x001
101 #define HISI_CPU_PART_TSV110 0xD01
103 #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53)
104 #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57)
105 #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72)
106 #define MIDR_CORTEX_A73 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A73)
107 #define MIDR_CORTEX_A75 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A75)
108 #define MIDR_CORTEX_A35 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A35)
109 #define MIDR_CORTEX_A55 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A55)
110 #define MIDR_CORTEX_A76 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A76)
111 #define MIDR_NEOVERSE_N1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_N1)
112 #define MIDR_THUNDERX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX)
113 #define MIDR_THUNDERX_81XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_81XX)
114 #define MIDR_THUNDERX_83XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_83XX)
115 #define MIDR_CAVIUM_THUNDERX2 MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX2)
116 #define MIDR_BRCM_VULCAN MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN)
117 #define MIDR_QCOM_FALKOR_V1 MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR_V1)
118 #define MIDR_QCOM_FALKOR MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR)
119 #define MIDR_QCOM_KRYO MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_KRYO)
120 #define MIDR_NVIDIA_DENVER MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_DENVER)
121 #define MIDR_NVIDIA_CARMEL MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_CARMEL)
122 #define MIDR_FUJITSU_A64FX MIDR_CPU_MODEL(ARM_CPU_IMP_FUJITSU, FUJITSU_CPU_PART_A64FX)
123 #define MIDR_HISI_TSV110 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_TSV110)
125 /* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */
126 #define MIDR_FUJITSU_ERRATUM_010001 MIDR_FUJITSU_A64FX
127 #define MIDR_FUJITSU_ERRATUM_010001_MASK (~MIDR_CPU_VAR_REV(1, 0))
128 #define TCR_CLEAR_FUJITSU_ERRATUM_010001 (TCR_NFD1 | TCR_NFD0)
132 #include <asm/sysreg.h>
134 #define read_cpuid(reg) read_sysreg_s(SYS_ ## reg)
137 * Represent a range of MIDR values for a given CPU model and a
138 * range of variant/revision values.
140 * @model - CPU model as defined by MIDR_CPU_MODEL
141 * @rv_min - Minimum value for the revision/variant as defined by
143 * @rv_max - Maximum value for the variant/revision for the range.
151 #define MIDR_RANGE(m, v_min, r_min, v_max, r_max) \
154 .rv_min = MIDR_CPU_VAR_REV(v_min, r_min), \
155 .rv_max = MIDR_CPU_VAR_REV(v_max, r_max), \
158 #define MIDR_REV_RANGE(m, v, r_min, r_max) MIDR_RANGE(m, v, r_min, v, r_max)
159 #define MIDR_REV(m, v, r) MIDR_RANGE(m, v, r, v, r)
160 #define MIDR_ALL_VERSIONS(m) MIDR_RANGE(m, 0, 0, 0xf, 0xf)
162 static inline bool is_midr_in_range(u32 midr
, struct midr_range
const *range
)
164 return MIDR_IS_CPU_MODEL_RANGE(midr
, range
->model
,
165 range
->rv_min
, range
->rv_max
);
169 is_midr_in_range_list(u32 midr
, struct midr_range
const *ranges
)
171 while (ranges
->model
)
172 if (is_midr_in_range(midr
, ranges
++))
178 * The CPU ID never changes at run time, so we might as well tell the
179 * compiler that it's constant. Use this function to read the CPU ID
180 * rather than directly reading processor_id or read_cpuid() directly.
182 static inline u32 __attribute_const__
read_cpuid_id(void)
184 return read_cpuid(MIDR_EL1
);
187 static inline u64 __attribute_const__
read_cpuid_mpidr(void)
189 return read_cpuid(MPIDR_EL1
);
192 static inline unsigned int __attribute_const__
read_cpuid_implementor(void)
194 return MIDR_IMPLEMENTOR(read_cpuid_id());
197 static inline unsigned int __attribute_const__
read_cpuid_part_number(void)
199 return MIDR_PARTNUM(read_cpuid_id());
202 static inline u32 __attribute_const__
read_cpuid_cachetype(void)
204 return read_cpuid(CTR_EL0
);
206 #endif /* __ASSEMBLY__ */