2012-03-05 04:49:28 -07:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
|
|
* published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#ifndef __ASM_CPUTYPE_H
|
|
|
|
#define __ASM_CPUTYPE_H
|
|
|
|
|
|
|
|
#define ID_MIDR_EL1 "midr_el1"
|
2013-02-27 11:05:59 -07:00
|
|
|
#define ID_MPIDR_EL1 "mpidr_el1"
|
2012-03-05 04:49:28 -07:00
|
|
|
#define ID_CTR_EL0 "ctr_el0"
|
|
|
|
|
|
|
|
#define ID_AA64PFR0_EL1 "id_aa64pfr0_el1"
|
|
|
|
#define ID_AA64DFR0_EL1 "id_aa64dfr0_el1"
|
|
|
|
#define ID_AA64AFR0_EL1 "id_aa64afr0_el1"
|
|
|
|
#define ID_AA64ISAR0_EL1 "id_aa64isar0_el1"
|
|
|
|
#define ID_AA64MMFR0_EL1 "id_aa64mmfr0_el1"
|
|
|
|
|
|
|
|
#define read_cpuid(reg) ({ \
|
|
|
|
u64 __val; \
|
|
|
|
asm("mrs %0, " reg : "=r" (__val)); \
|
|
|
|
__val; \
|
|
|
|
})
|
|
|
|
|
2013-02-27 11:05:59 -07:00
|
|
|
#define ARM_CPU_IMP_ARM 0x41
|
|
|
|
|
|
|
|
#define ARM_CPU_PART_AEM_V8 0xD0F0
|
|
|
|
#define ARM_CPU_PART_FOUNDATION 0xD000
|
|
|
|
#define ARM_CPU_PART_CORTEX_A57 0xD070
|
|
|
|
|
2012-03-05 04:49:28 -07:00
|
|
|
/*
|
|
|
|
* The CPU ID never changes at run time, so we might as well tell the
|
|
|
|
* compiler that it's constant. Use this function to read the CPU ID
|
|
|
|
* rather than directly reading processor_id or read_cpuid() directly.
|
|
|
|
*/
|
|
|
|
static inline u32 __attribute_const__ read_cpuid_id(void)
|
|
|
|
{
|
|
|
|
return read_cpuid(ID_MIDR_EL1);
|
|
|
|
}
|
|
|
|
|
2013-02-27 11:05:59 -07:00
|
|
|
static inline u64 __attribute_const__ read_cpuid_mpidr(void)
|
|
|
|
{
|
|
|
|
return read_cpuid(ID_MPIDR_EL1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int __attribute_const__ read_cpuid_implementor(void)
|
|
|
|
{
|
|
|
|
return (read_cpuid_id() & 0xFF000000) >> 24;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline unsigned int __attribute_const__ read_cpuid_part_number(void)
|
|
|
|
{
|
|
|
|
return (read_cpuid_id() & 0xFFF0);
|
|
|
|
}
|
|
|
|
|
2012-03-05 04:49:28 -07:00
|
|
|
static inline u32 __attribute_const__ read_cpuid_cachetype(void)
|
|
|
|
{
|
|
|
|
return read_cpuid(ID_CTR_EL0);
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|