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Linux/arch/arm64/include/asm/cpu.h

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  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_aa64mmfr0;
 55         u64             reg_id_aa64mmfr1;
 56         u64             reg_id_aa64mmfr2;
 57         u64             reg_id_aa64pfr0;
 58         u64             reg_id_aa64pfr1;
 59         u64             reg_id_aa64zfr0;
 60 
 61         struct cpuinfo_32bit    aarch32;
 62 
 63         /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
 64         u64             reg_zcr;
 65 };
 66 
 67 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
 68 
 69 void cpuinfo_store_cpu(void);
 70 void __init cpuinfo_store_boot_cpu(void);
 71 
 72 void __init init_cpu_features(struct cpuinfo_arm64 *info);
 73 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
 74                                  struct cpuinfo_arm64 *boot);
 75 
 76 #endif /* __ASM_CPU_H */
 77 

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