2 * Copyright (C) 2012 ARM Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 #ifndef __ASM_CPUTYPE_H
17 #define __ASM_CPUTYPE_H
19 #define INVALID_HWID ULONG_MAX
21 #define MPIDR_UP_BITMASK (0x1 << 30)
22 #define MPIDR_MT_BITMASK (0x1 << 24)
23 #define MPIDR_HWID_BITMASK UL(0xff00ffffff)
25 #define MPIDR_LEVEL_BITS_SHIFT 3
26 #define MPIDR_LEVEL_BITS (1 << MPIDR_LEVEL_BITS_SHIFT)
27 #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
29 #define MPIDR_LEVEL_SHIFT(level) \
30 (((1 << level) >> 1) << MPIDR_LEVEL_BITS_SHIFT)
32 #define MPIDR_AFFINITY_LEVEL(mpidr, level) \
33 ((mpidr >> MPIDR_LEVEL_SHIFT(level)) & MPIDR_LEVEL_MASK)
35 #define MIDR_REVISION_MASK 0xf
36 #define MIDR_REVISION(midr) ((midr) & MIDR_REVISION_MASK)
37 #define MIDR_PARTNUM_SHIFT 4
38 #define MIDR_PARTNUM_MASK (0xfff << MIDR_PARTNUM_SHIFT)
39 #define MIDR_PARTNUM(midr) \
40 (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT)
41 #define MIDR_ARCHITECTURE_SHIFT 16
42 #define MIDR_ARCHITECTURE_MASK (0xf << MIDR_ARCHITECTURE_SHIFT)
43 #define MIDR_ARCHITECTURE(midr) \
44 (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT)
45 #define MIDR_VARIANT_SHIFT 20
46 #define MIDR_VARIANT_MASK (0xf << MIDR_VARIANT_SHIFT)
47 #define MIDR_VARIANT(midr) \
48 (((midr) & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT)
49 #define MIDR_IMPLEMENTOR_SHIFT 24
50 #define MIDR_IMPLEMENTOR_MASK (0xff << MIDR_IMPLEMENTOR_SHIFT)
51 #define MIDR_IMPLEMENTOR(midr) \
52 (((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT)
54 #define MIDR_CPU_MODEL(imp, partnum) \
55 (((imp) << MIDR_IMPLEMENTOR_SHIFT) | \
56 (0xf << MIDR_ARCHITECTURE_SHIFT) | \
57 ((partnum) << MIDR_PARTNUM_SHIFT))
59 #define MIDR_CPU_VAR_REV(var, rev) \
60 (((var) << MIDR_VARIANT_SHIFT) | (rev))
62 #define MIDR_CPU_MODEL_MASK (MIDR_IMPLEMENTOR_MASK | MIDR_PARTNUM_MASK | \
63 MIDR_ARCHITECTURE_MASK)
65 #define ARM_CPU_IMP_ARM 0x41
66 #define ARM_CPU_IMP_APM 0x50
67 #define ARM_CPU_IMP_CAVIUM 0x43
68 #define ARM_CPU_IMP_BRCM 0x42
69 #define ARM_CPU_IMP_QCOM 0x51
70 #define ARM_CPU_IMP_NVIDIA 0x4E
71 #define ARM_CPU_IMP_HISI 0x48
73 #define ARM_CPU_PART_AEM_V8 0xD0F
74 #define ARM_CPU_PART_FOUNDATION 0xD00
75 #define ARM_CPU_PART_CORTEX_A57 0xD07
76 #define ARM_CPU_PART_CORTEX_A72 0xD08
77 #define ARM_CPU_PART_CORTEX_A53 0xD03
78 #define ARM_CPU_PART_CORTEX_A73 0xD09
79 #define ARM_CPU_PART_CORTEX_A75 0xD0A
80 #define ARM_CPU_PART_CORTEX_A35 0xD04
81 #define ARM_CPU_PART_CORTEX_A55 0xD05
82 #define ARM_CPU_PART_CORTEX_A76 0xD0B
83 #define ARM_CPU_PART_NEOVERSE_N1 0xD0C
84 #define ARM_CPU_PART_CORTEX_A77 0xD0D
85 #define ARM_CPU_PART_NEOVERSE_V1 0xD40
86 #define ARM_CPU_PART_CORTEX_A78 0xD41
87 #define ARM_CPU_PART_CORTEX_X1 0xD44
88 #define ARM_CPU_PART_CORTEX_A710 0xD47
89 #define ARM_CPU_PART_CORTEX_X2 0xD48
90 #define ARM_CPU_PART_NEOVERSE_N2 0xD49
91 #define ARM_CPU_PART_CORTEX_A78C 0xD4B
93 #define APM_CPU_PART_POTENZA 0x000
95 #define CAVIUM_CPU_PART_THUNDERX 0x0A1
96 #define CAVIUM_CPU_PART_THUNDERX_81XX 0x0A2
97 #define CAVIUM_CPU_PART_THUNDERX_83XX 0x0A3
98 #define CAVIUM_CPU_PART_THUNDERX2 0x0AF
100 #define BRCM_CPU_PART_VULCAN 0x516
102 #define QCOM_CPU_PART_FALKOR_V1 0x800
103 #define QCOM_CPU_PART_FALKOR 0xC00
104 #define QCOM_CPU_PART_KRYO 0x200
106 #define NVIDIA_CPU_PART_DENVER 0x003
107 #define NVIDIA_CPU_PART_CARMEL 0x004
109 #define HISI_CPU_PART_TSV110 0xD01
111 #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53)
112 #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57)
113 #define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72)
114 #define MIDR_CORTEX_A73 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A73)
115 #define MIDR_CORTEX_A75 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A75)
116 #define MIDR_CORTEX_A35 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A35)
117 #define MIDR_CORTEX_A55 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A55)
118 #define MIDR_CORTEX_A76 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A76)
119 #define MIDR_NEOVERSE_N1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_N1)
120 #define MIDR_CORTEX_A77 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A77)
121 #define MIDR_NEOVERSE_V1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_V1)
122 #define MIDR_CORTEX_A78 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78)
123 #define MIDR_CORTEX_X1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X1)
124 #define MIDR_CORTEX_A710 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A710)
125 #define MIDR_CORTEX_X2 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X2)
126 #define MIDR_NEOVERSE_N2 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_N2)
127 #define MIDR_CORTEX_A78C MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78C)
128 #define MIDR_THUNDERX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX)
129 #define MIDR_THUNDERX_81XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_81XX)
130 #define MIDR_THUNDERX_83XX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX_83XX)
131 #define MIDR_CAVIUM_THUNDERX2 MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX2)
132 #define MIDR_BRCM_VULCAN MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN)
133 #define MIDR_QCOM_FALKOR_V1 MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR_V1)
134 #define MIDR_QCOM_FALKOR MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_FALKOR)
135 #define MIDR_QCOM_KRYO MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, QCOM_CPU_PART_KRYO)
136 #define MIDR_NVIDIA_DENVER MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_DENVER)
137 #define MIDR_NVIDIA_CARMEL MIDR_CPU_MODEL(ARM_CPU_IMP_NVIDIA, NVIDIA_CPU_PART_CARMEL)
138 #define MIDR_HISI_TSV110 MIDR_CPU_MODEL(ARM_CPU_IMP_HISI, HISI_CPU_PART_TSV110)
142 #include <asm/sysreg.h>
144 #define read_cpuid(reg) read_sysreg_s(SYS_ ## reg)
147 * Represent a range of MIDR values for a given CPU model and a
148 * range of variant/revision values.
150 * @model - CPU model as defined by MIDR_CPU_MODEL
151 * @rv_min - Minimum value for the revision/variant as defined by
153 * @rv_max - Maximum value for the variant/revision for the range.
161 #define MIDR_RANGE(m, v_min, r_min, v_max, r_max) \
164 .rv_min = MIDR_CPU_VAR_REV(v_min, r_min), \
165 .rv_max = MIDR_CPU_VAR_REV(v_max, r_max), \
168 #define MIDR_ALL_VERSIONS(m) MIDR_RANGE(m, 0, 0, 0xf, 0xf)
170 static inline bool midr_is_cpu_model_range(u32 midr, u32 model, u32 rv_min,
173 u32 _model = midr & MIDR_CPU_MODEL_MASK;
174 u32 rv = midr & (MIDR_REVISION_MASK | MIDR_VARIANT_MASK);
176 return _model == model && rv >= rv_min && rv <= rv_max;
179 static inline bool is_midr_in_range(u32 midr, struct midr_range const *range)
181 return midr_is_cpu_model_range(midr, range->model,
182 range->rv_min, range->rv_max);
186 is_midr_in_range_list(u32 midr, struct midr_range const *ranges)
188 while (ranges->model)
189 if (is_midr_in_range(midr, ranges++))
195 * The CPU ID never changes at run time, so we might as well tell the
196 * compiler that it's constant. Use this function to read the CPU ID
197 * rather than directly reading processor_id or read_cpuid() directly.
199 static inline u32 __attribute_const__ read_cpuid_id(void)
201 return read_cpuid(MIDR_EL1);
204 static inline u64 __attribute_const__ read_cpuid_mpidr(void)
206 return read_cpuid(MPIDR_EL1);
209 static inline unsigned int __attribute_const__ read_cpuid_implementor(void)
211 return MIDR_IMPLEMENTOR(read_cpuid_id());
214 static inline unsigned int __attribute_const__ read_cpuid_part_number(void)
216 return MIDR_PARTNUM(read_cpuid_id());
219 static inline u32 __attribute_const__ read_cpuid_cachetype(void)
221 return read_cpuid(CTR_EL0);
223 #endif /* __ASSEMBLY__ */