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/*
* 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 INVALID_HWID ULONG_MAX
#define MPIDR_HWID_BITMASK 0xff00ffffff
#define MPIDR_LEVEL_BITS_SHIFT 3
#define MPIDR_LEVEL_BITS (1 << MPIDR_LEVEL_BITS_SHIFT)
#define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
#define MPIDR_LEVEL_SHIFT(level) \
(((1 << level) >> 1) << MPIDR_LEVEL_BITS_SHIFT)
#define MPIDR_AFFINITY_LEVEL(mpidr, level) \
((mpidr >> MPIDR_LEVEL_SHIFT(level)) & MPIDR_LEVEL_MASK)
#define read_cpuid(reg) ({ \
u64 __val; \
asm("mrs %0, " #reg : "=r" (__val)); \
__val; \
})
#define ARM_CPU_IMP_ARM 0x41
#define ARM_CPU_IMP_APM 0x50
#define ARM_CPU_PART_AEM_V8 0xD0F0
#define ARM_CPU_PART_FOUNDATION 0xD000
#define ARM_CPU_PART_CORTEX_A53 0xD030
#define ARM_CPU_PART_CORTEX_A57 0xD070
#define APM_CPU_PART_POTENZA 0x0000
#ifndef __ASSEMBLY__
/*
* 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(MIDR_EL1);
}
static inline u64 __attribute_const__ read_cpuid_mpidr(void)
{
return read_cpuid(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);
}
static inline u32 __attribute_const__ read_cpuid_cachetype(void)
{
return read_cpuid(CTR_EL0);
}
#endif /* __ASSEMBLY__ */
#endif
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