1 /* 2 * Copyright (C) 2014 ARM Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 #ifndef __ASM_CPU_H 17 #define __ASM_CPU_H 18 19 #include <linux/cpu.h> 20 #include <linux/init.h> 21 #include <linux/percpu.h> 22 23 /* 24 * Records attributes of an individual CPU. 25 */ 26 struct cpuinfo_arm64 { 27 struct cpu cpu; 28 struct kobject kobj; 29 u32 reg_ctr; 30 u32 reg_cntfrq; 31 u32 reg_dczid; 32 u32 reg_midr; 33 u32 reg_revidr; 34 35 u64 reg_id_aa64dfr0; 36 u64 reg_id_aa64dfr1; 37 u64 reg_id_aa64isar0; 38 u64 reg_id_aa64isar1; 39 u64 reg_id_aa64mmfr0; 40 u64 reg_id_aa64mmfr1; 41 u64 reg_id_aa64mmfr2; 42 u64 reg_id_aa64pfr0; 43 u64 reg_id_aa64pfr1; 44 u64 reg_id_aa64zfr0; 45 46 u32 reg_id_dfr0; 47 u32 reg_id_isar0; 48 u32 reg_id_isar1; 49 u32 reg_id_isar2; 50 u32 reg_id_isar3; 51 u32 reg_id_isar4; 52 u32 reg_id_isar5; 53 u32 reg_id_mmfr0; 54 u32 reg_id_mmfr1; 55 u32 reg_id_mmfr2; 56 u32 reg_id_mmfr3; 57 u32 reg_id_pfr0; 58 u32 reg_id_pfr1; 59 60 u32 reg_mvfr0; 61 u32 reg_mvfr1; 62 u32 reg_mvfr2; 63 64 /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */ 65 u64 reg_zcr; 66 }; 67 68 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data); 69 70 void cpuinfo_store_cpu(void); 71 void __init cpuinfo_store_boot_cpu(void); 72 73 void __init init_cpu_features(struct cpuinfo_arm64 *info); 74 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info, 75 struct cpuinfo_arm64 *boot); 76 77 #endif /* __ASM_CPU_H */ 78