Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 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 u64 reg_smidr;
50
51 u64 reg_id_aa64dfr0;
52 u64 reg_id_aa64dfr1;
53 u64 reg_id_aa64isar0;
54 u64 reg_id_aa64isar1;
55 u64 reg_id_aa64isar2;
56 u64 reg_id_aa64mmfr0;
57 u64 reg_id_aa64mmfr1;
58 u64 reg_id_aa64mmfr2;
59 u64 reg_id_aa64pfr0;
60 u64 reg_id_aa64pfr1;
61 u64 reg_id_aa64zfr0;
62 u64 reg_id_aa64smfr0;
63
64 struct cpuinfo_32bit aarch32;
65
66 /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
67 u64 reg_zcr;
68
69 /* pseudo-SMCR for recording maximum SMCR_EL1 LEN value: */
70 u64 reg_smcr;
71};
72
73DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
74
75void cpuinfo_store_cpu(void);
76void __init cpuinfo_store_boot_cpu(void);
77
78void __init init_cpu_features(struct cpuinfo_arm64 *info);
79void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
80 struct cpuinfo_arm64 *boot);
81
82#endif /* __ASM_CPU_H */