arch/arm64/include/asm/cpu.h

   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 */