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Diffstat (limited to 'arch/arm64/include/asm/cpu.h')
-rw-r--r-- | arch/arm64/include/asm/cpu.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpu.h b/arch/arm64/include/asm/cpu.h new file mode 100644 index 000000000..fd7a92219 --- /dev/null +++ b/arch/arm64/include/asm/cpu.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2014 ARM Ltd. + */ +#ifndef __ASM_CPU_H +#define __ASM_CPU_H + +#include <linux/cpu.h> +#include <linux/init.h> +#include <linux/percpu.h> + +/* + * Records attributes of an individual CPU. + */ +struct cpuinfo_32bit { + u32 reg_id_dfr0; + u32 reg_id_dfr1; + u32 reg_id_isar0; + u32 reg_id_isar1; + u32 reg_id_isar2; + u32 reg_id_isar3; + u32 reg_id_isar4; + u32 reg_id_isar5; + u32 reg_id_isar6; + u32 reg_id_mmfr0; + u32 reg_id_mmfr1; + u32 reg_id_mmfr2; + u32 reg_id_mmfr3; + u32 reg_id_mmfr4; + u32 reg_id_mmfr5; + u32 reg_id_pfr0; + u32 reg_id_pfr1; + u32 reg_id_pfr2; + + u32 reg_mvfr0; + u32 reg_mvfr1; + u32 reg_mvfr2; +}; + +struct cpuinfo_arm64 { + struct cpu cpu; + struct kobject kobj; + u64 reg_ctr; + u64 reg_cntfrq; + u64 reg_dczid; + u64 reg_midr; + u64 reg_revidr; + u64 reg_gmid; + u64 reg_smidr; + + u64 reg_id_aa64dfr0; + u64 reg_id_aa64dfr1; + u64 reg_id_aa64isar0; + u64 reg_id_aa64isar1; + u64 reg_id_aa64isar2; + u64 reg_id_aa64mmfr0; + u64 reg_id_aa64mmfr1; + u64 reg_id_aa64mmfr2; + u64 reg_id_aa64pfr0; + u64 reg_id_aa64pfr1; + u64 reg_id_aa64zfr0; + u64 reg_id_aa64smfr0; + + struct cpuinfo_32bit aarch32; + + /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */ + u64 reg_zcr; + + /* pseudo-SMCR for recording maximum SMCR_EL1 LEN value: */ + u64 reg_smcr; +}; + +DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data); + +void cpuinfo_store_cpu(void); +void __init cpuinfo_store_boot_cpu(void); + +void __init init_cpu_features(struct cpuinfo_arm64 *info); +void update_cpu_features(int cpu, struct cpuinfo_arm64 *info, + struct cpuinfo_arm64 *boot); + +#endif /* __ASM_CPU_H */ |