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_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
40struct 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
71DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
72
73void cpuinfo_store_cpu(void);
74void __init cpuinfo_store_boot_cpu(void);
75
76void __init init_cpu_features(struct cpuinfo_arm64 *info);
77void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
78				 struct cpuinfo_arm64 *boot);
79
80#endif /* __ASM_CPU_H */
81