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_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_aa64mmfr0;
  29         u64             reg_id_aa64mmfr1;
  30         u64             reg_id_aa64mmfr2;
  31         u64             reg_id_aa64pfr0;
  32         u64             reg_id_aa64pfr1;
  33         u64             reg_id_aa64zfr0;
  34
  35         u32             reg_id_dfr0;
  36         u32             reg_id_isar0;
  37         u32             reg_id_isar1;
  38         u32             reg_id_isar2;
  39         u32             reg_id_isar3;
  40         u32             reg_id_isar4;
  41         u32             reg_id_isar5;
  42         u32             reg_id_mmfr0;
  43         u32             reg_id_mmfr1;
  44         u32             reg_id_mmfr2;
  45         u32             reg_id_mmfr3;
  46         u32             reg_id_pfr0;
  47         u32             reg_id_pfr1;
  48
  49         u32             reg_mvfr0;
  50         u32             reg_mvfr1;
  51         u32             reg_mvfr2;
  52
  53         /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
  54         u64             reg_zcr;
  55 };
  56
  57 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
  58
  59 void cpuinfo_store_cpu(void);
  60 void __init cpuinfo_store_boot_cpu(void);
  61
  62 void __init init_cpu_features(struct cpuinfo_arm64 *info);
  63 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
  64                                  struct cpuinfo_arm64 *boot);
  65
  66 #endif /* __ASM_CPU_H */