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

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  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         struct kobject  kobj;
 29         u32             reg_ctr;
 30         u32             reg_cntfrq;
 31         u32             reg_dczid;
 32         u32             reg_midr;
 33         u32             reg_revidr;
 34 
 35         u64             reg_id_aa64dfr0;
 36         u64             reg_id_aa64dfr1;
 37         u64             reg_id_aa64isar0;
 38         u64             reg_id_aa64isar1;
 39         u64             reg_id_aa64mmfr0;
 40         u64             reg_id_aa64mmfr1;
 41         u64             reg_id_aa64mmfr2;
 42         u64             reg_id_aa64pfr0;
 43         u64             reg_id_aa64pfr1;
 44         u64             reg_id_aa64zfr0;
 45 
 46         u32             reg_id_dfr0;
 47         u32             reg_id_isar0;
 48         u32             reg_id_isar1;
 49         u32             reg_id_isar2;
 50         u32             reg_id_isar3;
 51         u32             reg_id_isar4;
 52         u32             reg_id_isar5;
 53         u32             reg_id_mmfr0;
 54         u32             reg_id_mmfr1;
 55         u32             reg_id_mmfr2;
 56         u32             reg_id_mmfr3;
 57         u32             reg_id_pfr0;
 58         u32             reg_id_pfr1;
 59 
 60         u32             reg_mvfr0;
 61         u32             reg_mvfr1;
 62         u32             reg_mvfr2;
 63 
 64         /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
 65         u64             reg_zcr;
 66 };
 67 
 68 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
 69 
 70 void cpuinfo_store_cpu(void);
 71 void __init cpuinfo_store_boot_cpu(void);
 72 
 73 void __init init_cpu_features(struct cpuinfo_arm64 *info);
 74 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
 75                                  struct cpuinfo_arm64 *boot);
 76 
 77 #endif /* __ASM_CPU_H */
 78 

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