| /* |
| * 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_UP_BITMASK (0x1 << 30) |
| #define MPIDR_MT_BITMASK (0x1 << 24) |
| #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 MIDR_REVISION_MASK 0xf |
| #define MIDR_REVISION(midr) ((midr) & MIDR_REVISION_MASK) |
| #define MIDR_PARTNUM_SHIFT 4 |
| #define MIDR_PARTNUM_MASK (0xfff << MIDR_PARTNUM_SHIFT) |
| #define MIDR_PARTNUM(midr) \ |
| (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT) |
| #define MIDR_ARCHITECTURE_SHIFT 16 |
| #define MIDR_ARCHITECTURE_MASK (0xf << MIDR_ARCHITECTURE_SHIFT) |
| #define MIDR_ARCHITECTURE(midr) \ |
| (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT) |
| #define MIDR_VARIANT_SHIFT 20 |
| #define MIDR_VARIANT_MASK (0xf << MIDR_VARIANT_SHIFT) |
| #define MIDR_VARIANT(midr) \ |
| (((midr) & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT) |
| #define MIDR_IMPLEMENTOR_SHIFT 24 |
| #define MIDR_IMPLEMENTOR_MASK (0xff << MIDR_IMPLEMENTOR_SHIFT) |
| #define MIDR_IMPLEMENTOR(midr) \ |
| (((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT) |
| |
| #define MIDR_CPU_MODEL(imp, partnum) \ |
| (((imp) << MIDR_IMPLEMENTOR_SHIFT) | \ |
| (0xf << MIDR_ARCHITECTURE_SHIFT) | \ |
| ((partnum) << MIDR_PARTNUM_SHIFT)) |
| |
| #define MIDR_CPU_MODEL_MASK (MIDR_IMPLEMENTOR_MASK | MIDR_PARTNUM_MASK | \ |
| MIDR_ARCHITECTURE_MASK) |
| |
| #define MIDR_IS_CPU_MODEL_RANGE(midr, model, rv_min, rv_max) \ |
| ({ \ |
| u32 _model = (midr) & MIDR_CPU_MODEL_MASK; \ |
| u32 rv = (midr) & (MIDR_REVISION_MASK | MIDR_VARIANT_MASK); \ |
| \ |
| _model == (model) && rv >= (rv_min) && rv <= (rv_max); \ |
| }) |
| |
| #define ARM_CPU_IMP_ARM 0x41 |
| #define ARM_CPU_IMP_APM 0x50 |
| #define ARM_CPU_IMP_CAVIUM 0x43 |
| #define ARM_CPU_IMP_BRCM 0x42 |
| |
| #define ARM_CPU_PART_AEM_V8 0xD0F |
| #define ARM_CPU_PART_FOUNDATION 0xD00 |
| #define ARM_CPU_PART_CORTEX_A57 0xD07 |
| #define ARM_CPU_PART_CORTEX_A53 0xD03 |
| |
| #define APM_CPU_PART_POTENZA 0x000 |
| |
| #define CAVIUM_CPU_PART_THUNDERX 0x0A1 |
| |
| #define BRCM_CPU_PART_VULCAN 0x516 |
| |
| #define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53) |
| #define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57) |
| #define MIDR_THUNDERX MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX) |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <asm/sysreg.h> |
| |
| #define read_cpuid(reg) ({ \ |
| u64 __val; \ |
| asm("mrs_s %0, " __stringify(SYS_ ## reg) : "=r" (__val)); \ |
| __val; \ |
| }) |
| |
| /* |
| * 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 MIDR_IMPLEMENTOR(read_cpuid_id()); |
| } |
| |
| static inline unsigned int __attribute_const__ read_cpuid_part_number(void) |
| { |
| return MIDR_PARTNUM(read_cpuid_id()); |
| } |
| |
| static inline u32 __attribute_const__ read_cpuid_cachetype(void) |
| { |
| return read_cpuid(CTR_EL0); |
| } |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif |