1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2014 ARM Ltd.
4 */
5 #ifndef __ASM_CPU_H
6 #define __ASM_CPU_H
7
8 #include <linux/cpu.h>
9 #include <linux/init.h>
10 #include <linux/percpu.h>
11
12 /*
13 * Records attributes of an individual CPU.
14 */
15 struct cpuinfo_32bit {
16 u32 reg_id_dfr0;
17 u32 reg_id_dfr1;
18 u32 reg_id_isar0;
19 u32 reg_id_isar1;
20 u32 reg_id_isar2;
21 u32 reg_id_isar3;
22 u32 reg_id_isar4;
23 u32 reg_id_isar5;
24 u32 reg_id_isar6;
25 u32 reg_id_mmfr0;
26 u32 reg_id_mmfr1;
27 u32 reg_id_mmfr2;
28 u32 reg_id_mmfr3;
29 u32 reg_id_mmfr4;
30 u32 reg_id_mmfr5;
31 u32 reg_id_pfr0;
32 u32 reg_id_pfr1;
33 u32 reg_id_pfr2;
34
35 u32 reg_mvfr0;
36 u32 reg_mvfr1;
37 u32 reg_mvfr2;
38 };
39
40 struct cpuinfo_arm64 {
41 struct kobject kobj;
42 u64 reg_ctr;
43 u64 reg_cntfrq;
44 u64 reg_dczid;
45 u64 reg_midr;
46 u64 reg_revidr;
47 u64 reg_gmid;
48 u64 reg_smidr;
49
50 u64 reg_id_aa64dfr0;
51 u64 reg_id_aa64dfr1;
52 u64 reg_id_aa64isar0;
53 u64 reg_id_aa64isar1;
54 u64 reg_id_aa64isar2;
55 u64 reg_id_aa64isar3;
56 u64 reg_id_aa64mmfr0;
57 u64 reg_id_aa64mmfr1;
58 u64 reg_id_aa64mmfr2;
59 u64 reg_id_aa64mmfr3;
60 u64 reg_id_aa64mmfr4;
61 u64 reg_id_aa64pfr0;
62 u64 reg_id_aa64pfr1;
63 u64 reg_id_aa64pfr2;
64 u64 reg_id_aa64zfr0;
65 u64 reg_id_aa64smfr0;
66 u64 reg_id_aa64fpfr0;
67
68 struct cpuinfo_32bit aarch32;
69 };
70
71 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
72
73 void cpuinfo_store_cpu(void);
74 void __init cpuinfo_store_boot_cpu(void);
75
76 void __init init_cpu_features(struct cpuinfo_arm64 *info);
77 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
78 struct cpuinfo_arm64 *boot);
79
80 #endif /* __ASM_CPU_H */
81
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