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_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_aa64isar2; 29 u64 reg_id_aa64mmfr0; 30 u64 reg_id_aa64mmfr1; 31 u64 reg_id_aa64mmfr2; 32 u64 reg_id_aa64pfr0; 33 u64 reg_id_aa64pfr1; 34 u64 reg_id_aa64zfr0; 35 36 u32 reg_id_dfr0; 37 u32 reg_id_isar0; 38 u32 reg_id_isar1; 39 u32 reg_id_isar2; 40 u32 reg_id_isar3; 41 u32 reg_id_isar4; 42 u32 reg_id_isar5; 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 58 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data); 59 60 void cpuinfo_store_cpu(void); 61 void __init cpuinfo_store_boot_cpu(void); 62 63 void __init init_cpu_features(struct cpuinfo_arm64 *info); 64 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info, 65 struct cpuinfo_arm64 *boot); 66 67 #endif /* __ASM_CPU_H */ 68