Linux kernel mirror (for testing)
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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 */
15struct cpuinfo_arm64 {
16 struct cpu cpu;
17 struct kobject kobj;
18 u32 reg_ctr;
19 u32 reg_cntfrq;
20 u32 reg_dczid;
21 u32 reg_midr;
22 u32 reg_revidr;
23
24 u64 reg_id_aa64dfr0;
25 u64 reg_id_aa64dfr1;
26 u64 reg_id_aa64isar0;
27 u64 reg_id_aa64isar1;
28 u64 reg_id_aa64mmfr0;
29 u64 reg_id_aa64mmfr1;
30 u64 reg_id_aa64mmfr2;
31 u64 reg_id_aa64pfr0;
32 u64 reg_id_aa64pfr1;
33 u64 reg_id_aa64zfr0;
34
35 u32 reg_id_dfr0;
36 u32 reg_id_isar0;
37 u32 reg_id_isar1;
38 u32 reg_id_isar2;
39 u32 reg_id_isar3;
40 u32 reg_id_isar4;
41 u32 reg_id_isar5;
42 u32 reg_id_isar6;
43 u32 reg_id_mmfr0;
44 u32 reg_id_mmfr1;
45 u32 reg_id_mmfr2;
46 u32 reg_id_mmfr3;
47 u32 reg_id_pfr0;
48 u32 reg_id_pfr1;
49
50 u32 reg_mvfr0;
51 u32 reg_mvfr1;
52 u32 reg_mvfr2;
53
54 /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
55 u64 reg_zcr;
56};
57
58DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
59
60void cpuinfo_store_cpu(void);
61void __init cpuinfo_store_boot_cpu(void);
62
63void __init init_cpu_features(struct cpuinfo_arm64 *info);
64void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
65 struct cpuinfo_arm64 *boot);
66
67#endif /* __ASM_CPU_H */