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_aa64isar2;
55 	u64		reg_id_aa64mmfr0;
56 	u64		reg_id_aa64mmfr1;
57 	u64		reg_id_aa64mmfr2;
58 	u64		reg_id_aa64pfr0;
59 	u64		reg_id_aa64pfr1;
60 	u64		reg_id_aa64zfr0;
61 	u64		reg_id_aa64smfr0;
62 
63 	struct cpuinfo_32bit	aarch32;
64 
65 	/* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
66 	u64		reg_zcr;
67 
68 	/* pseudo-SMCR for recording maximum SMCR_EL1 LEN value: */
69 	u64		reg_smcr;
70 };
71 
72 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
73 
74 void cpuinfo_store_cpu(void);
75 void __init cpuinfo_store_boot_cpu(void);
76 
77 void __init init_cpu_features(struct cpuinfo_arm64 *info);
78 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
79 				 struct cpuinfo_arm64 *boot);
80 
81 #endif /* __ASM_CPU_H */
82