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[linux.git] / arch / arm64 / include / asm / cpu.h
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 cpu      cpu;
42         struct kobject  kobj;
43         u64             reg_ctr;
44         u64             reg_cntfrq;
45         u64             reg_dczid;
46         u64             reg_midr;
47         u64             reg_revidr;
48         u64             reg_gmid;
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_aa64mmfr0;
55         u64             reg_id_aa64mmfr1;
56         u64             reg_id_aa64mmfr2;
57         u64             reg_id_aa64pfr0;
58         u64             reg_id_aa64pfr1;
59         u64             reg_id_aa64zfr0;
60
61         struct cpuinfo_32bit    aarch32;
62
63         /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
64         u64             reg_zcr;
65 };
66
67 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
68
69 void cpuinfo_store_cpu(void);
70 void __init cpuinfo_store_boot_cpu(void);
71
72 void __init init_cpu_features(struct cpuinfo_arm64 *info);
73 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
74                                  struct cpuinfo_arm64 *boot);
75
76 #endif /* __ASM_CPU_H */
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