arch/arm64/include/asm/cpu.h

   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         u32             reg_ctr;
  29         u32             reg_cntfrq;
  30         u32             reg_dczid;
  31         u32             reg_midr;
  32
  33         u64             reg_id_aa64dfr0;
  34         u64             reg_id_aa64dfr1;
  35         u64             reg_id_aa64isar0;
  36         u64             reg_id_aa64isar1;
  37         u64             reg_id_aa64mmfr0;
  38         u64             reg_id_aa64mmfr1;
  39         u64             reg_id_aa64mmfr2;
  40         u64             reg_id_aa64pfr0;
  41         u64             reg_id_aa64pfr1;
  42
  43         u32             reg_id_dfr0;
  44         u32             reg_id_isar0;
  45         u32             reg_id_isar1;
  46         u32             reg_id_isar2;
  47         u32             reg_id_isar3;
  48         u32             reg_id_isar4;
  49         u32             reg_id_isar5;
  50         u32             reg_id_mmfr0;
  51         u32             reg_id_mmfr1;
  52         u32             reg_id_mmfr2;
  53         u32             reg_id_mmfr3;
  54         u32             reg_id_pfr0;
  55         u32             reg_id_pfr1;
  56
  57         u32             reg_mvfr0;
  58         u32             reg_mvfr1;
  59         u32             reg_mvfr2;
  60 };
  61
  62 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
  63
  64 void cpuinfo_store_cpu(void);
  65 void __init cpuinfo_store_boot_cpu(void);
  66
  67 void __init init_cpu_features(struct cpuinfo_arm64 *info);
  68 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
  69                                  struct cpuinfo_arm64 *boot);
  70
  71 #endif /* __ASM_CPU_H */