include/asm/cpu.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003   * Copyright (C) 2014 ARM Ltd.
0004  */
0005 #ifndef __ASM_CPU_H
0006 #define __ASM_CPU_H
0007
0008 #include <linux/cpu.h>
0009 #include <linux/init.h>
0010 #include <linux/percpu.h>
0011
0012 /*
0013  * Records attributes of an individual CPU.
0014  */
0015 struct cpuinfo_32bit {
0016     u32     reg_id_dfr0;
0017     u32     reg_id_dfr1;
0018     u32     reg_id_isar0;
0019     u32     reg_id_isar1;
0020     u32     reg_id_isar2;
0021     u32     reg_id_isar3;
0022     u32     reg_id_isar4;
0023     u32     reg_id_isar5;
0024     u32     reg_id_isar6;
0025     u32     reg_id_mmfr0;
0026     u32     reg_id_mmfr1;
0027     u32     reg_id_mmfr2;
0028     u32     reg_id_mmfr3;
0029     u32     reg_id_mmfr4;
0030     u32     reg_id_mmfr5;
0031     u32     reg_id_pfr0;
0032     u32     reg_id_pfr1;
0033     u32     reg_id_pfr2;
0034
0035     u32     reg_mvfr0;
0036     u32     reg_mvfr1;
0037     u32     reg_mvfr2;
0038 };
0039
0040 struct cpuinfo_arm64 {
0041     struct cpu  cpu;
0042     struct kobject  kobj;
0043     u64     reg_ctr;
0044     u64     reg_cntfrq;
0045     u64     reg_dczid;
0046     u64     reg_midr;
0047     u64     reg_revidr;
0048     u64     reg_gmid;
0049     u64     reg_smidr;
0050
0051     u64     reg_id_aa64dfr0;
0052     u64     reg_id_aa64dfr1;
0053     u64     reg_id_aa64isar0;
0054     u64     reg_id_aa64isar1;
0055     u64     reg_id_aa64isar2;
0056     u64     reg_id_aa64mmfr0;
0057     u64     reg_id_aa64mmfr1;
0058     u64     reg_id_aa64mmfr2;
0059     u64     reg_id_aa64pfr0;
0060     u64     reg_id_aa64pfr1;
0061     u64     reg_id_aa64zfr0;
0062     u64     reg_id_aa64smfr0;
0063
0064     struct cpuinfo_32bit    aarch32;
0065
0066     /* pseudo-ZCR for recording maximum ZCR_EL1 LEN value: */
0067     u64     reg_zcr;
0068
0069     /* pseudo-SMCR for recording maximum SMCR_EL1 LEN value: */
0070     u64     reg_smcr;
0071 };
0072
0073 DECLARE_PER_CPU(struct cpuinfo_arm64, cpu_data);
0074
0075 void cpuinfo_store_cpu(void);
0076 void __init cpuinfo_store_boot_cpu(void);
0077
0078 void __init init_cpu_features(struct cpuinfo_arm64 *info);
0079 void update_cpu_features(int cpu, struct cpuinfo_arm64 *info,
0080                  struct cpuinfo_arm64 *boot);
0081
0082 #endif /* __ASM_CPU_H */