/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ARM_CPUTYPE_H
#define __ASM_ARM_CPUTYPE_H
#define CPUID_ID 0
#define CPUID_CACHETYPE 1
#define CPUID_TCM 2
#define CPUID_TLBTYPE 3
#define CPUID_MPUIR 4
#define CPUID_MPIDR 5
#define CPUID_REVIDR 6
#ifdef CONFIG_CPU_V7M
#define CPUID_EXT_PFR0 0x40
#define CPUID_EXT_PFR1 0x44
#define CPUID_EXT_DFR0 0x48
#define CPUID_EXT_AFR0 0x4c
#define CPUID_EXT_MMFR0 0x50
#define CPUID_EXT_MMFR1 0x54
#define CPUID_EXT_MMFR2 0x58
#define CPUID_EXT_MMFR3 0x5c
#define CPUID_EXT_ISAR0 0x60
#define CPUID_EXT_ISAR1 0x64
#define CPUID_EXT_ISAR2 0x68
#define CPUID_EXT_ISAR3 0x6c
#define CPUID_EXT_ISAR4 0x70
#define CPUID_EXT_ISAR5 0x74
#define CPUID_EXT_ISAR6 0x7c
#define CPUID_EXT_PFR2 0x90
#else
#define CPUID_EXT_PFR0 "c1, 0"
#define CPUID_EXT_PFR1 "c1, 1"
#define CPUID_EXT_DFR0 "c1, 2"
#define CPUID_EXT_AFR0 "c1, 3"
#define CPUID_EXT_MMFR0 "c1, 4"
#define CPUID_EXT_MMFR1 "c1, 5"
#define CPUID_EXT_MMFR2 "c1, 6"
#define CPUID_EXT_MMFR3 "c1, 7"
#define CPUID_EXT_ISAR0 "c2, 0"
#define CPUID_EXT_ISAR1 "c2, 1"
#define CPUID_EXT_ISAR2 "c2, 2"
#define CPUID_EXT_ISAR3 "c2, 3"
#define CPUID_EXT_ISAR4 "c2, 4"
#define CPUID_EXT_ISAR5 "c2, 5"
#define CPUID_EXT_ISAR6 "c2, 7"
#define CPUID_EXT_PFR2 "c3, 4"
#endif
#define MPIDR_SMP_BITMASK (0x3 << 30)
#define MPIDR_SMP_VALUE (0x2 << 30)
#define MPIDR_MT_BITMASK (0x1 << 24)
#define MPIDR_HWID_BITMASK 0xFFFFFF
#define MPIDR_INVALID (~MPIDR_HWID_BITMASK)
#define MPIDR_LEVEL_BITS 8
#define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
#define MPIDR_LEVEL_SHIFT(level) (MPIDR_LEVEL_BITS * level)
#define MPIDR_AFFINITY_LEVEL(mpidr, level) \
((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK)
#define ARM_CPU_IMP_ARM 0x41
#define ARM_CPU_IMP_BRCM 0x42
#define ARM_CPU_IMP_DEC 0x44
#define ARM_CPU_IMP_INTEL 0x69
/* ARM implemented processors */
#define ARM_CPU_PART_ARM1136 0x4100b360
#define ARM_CPU_PART_ARM1156 0x4100b560
#define ARM_CPU_PART_ARM1176 0x4100b760
#define ARM_CPU_PART_ARM11MPCORE 0x4100b020
#define ARM_CPU_PART_CORTEX_A8 0x4100c080
#define ARM_CPU_PART_CORTEX_A9 0x4100c090
#define ARM_CPU_PART_CORTEX_A5 0x4100c050
#define ARM_CPU_PART_CORTEX_A7 0x4100c070
#define ARM_CPU_PART_CORTEX_A12 0x4100c0d0
#define ARM_CPU_PART_CORTEX_A17 0x4100c0e0
#define ARM_CPU_PART_CORTEX_A15 0x4100c0f0
#define ARM_CPU_PART_CORTEX_A53 0x4100d030
#define ARM_CPU_PART_CORTEX_A57 0x4100d070
#define ARM_CPU_PART_CORTEX_A72 0x4100d080
#define ARM_CPU_PART_CORTEX_A73 0x4100d090
#define ARM_CPU_PART_CORTEX_A75 0x4100d0a0
#define ARM_CPU_PART_MASK 0xff00fff0
/* Broadcom implemented processors */
#define ARM_CPU_PART_BRAHMA_B15 0x420000f0
#define ARM_CPU_PART_BRAHMA_B53 0x42001000
/* DEC implemented cores */
#define ARM_CPU_PART_SA1100 0x4400a110
/* Intel implemented cores */
#define ARM_CPU_PART_SA1110 0x6900b110
#define ARM_CPU_REV_SA1110_A0 0
#define ARM_CPU_REV_SA1110_B0 4
#define ARM_CPU_REV_SA1110_B1 5
#define ARM_CPU_REV_SA1110_B2 6
#define ARM_CPU_REV_SA1110_B4 8
#define ARM_CPU_XSCALE_ARCH_MASK 0xe000
#define ARM_CPU_XSCALE_ARCH_V1 0x2000
#define ARM_CPU_XSCALE_ARCH_V2 0x4000
#define ARM_CPU_XSCALE_ARCH_V3 0x6000
/* Qualcomm implemented cores */
#define ARM_CPU_PART_SCORPION 0x510002d0
#ifndef __ASSEMBLY__
#include <linux/stringify.h>
#include <linux/kernel.h>
extern unsigned int processor_id;
struct proc_info_list *lookup_processor(u32 midr);
#ifdef CONFIG_CPU_CP15
#define read_cpuid(reg) \
({ \
unsigned int __val; \
asm("mrc p15, 0, %0, c0, c0, " __stringify(reg) \
: "=r" (__val) \
: \
: "cc"); \
__val; \
})
/*
* The memory clobber prevents gcc 4.5 from reordering the mrc before
* any is_smp() tests, which can cause undefined instruction aborts on
* ARM1136 r0 due to the missing extended CP15 registers.
*/
#define read_cpuid_ext(ext_reg) \
({ \
unsigned int __val; \
asm("mrc p15, 0, %0, c0, " ext_reg \
: "=r" (__val) \
: \
: "memory"); \
__val; \
})
#elif defined(CONFIG_CPU_V7M)
#include <asm/io.h>
#include <asm/v7m.h>
#define read_cpuid(reg) \
({ \
WARN_ON_ONCE(1); \
0; \
})
static inline unsigned int __attribute_const__ read_cpuid_ext(unsigned offset)
{
return readl(BASEADDR_V7M_SCB + offset);
}
#else /* ifdef CONFIG_CPU_CP15 / elif defined (CONFIG_CPU_V7M) */
/*
* read_cpuid and read_cpuid_ext should only ever be called on machines that
* have cp15 so warn on other usages.
*/
#define read_cpuid(reg) \
({ \
WARN_ON_ONCE(1); \
0; \
})
#define read_cpuid_ext(reg) read_cpuid(reg)
#endif /* ifdef CONFIG_CPU_CP15 / else */
#ifdef CONFIG_CPU_CP15
/*
* 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 unsigned int __attribute_const__ read_cpuid_id(void)
{
return read_cpuid(CPUID_ID);
}
static inline unsigned int __attribute_const__ read_cpuid_cachetype(void)
{
return read_cpuid(CPUID_CACHETYPE);
}
static inline unsigned int __attribute_const__ read_cpuid_mputype(void)
{
return read_cpuid(CPUID_MPUIR);
}
#elif defined(CONFIG_CPU_V7M)
static inline unsigned int __attribute_const__ read_cpuid_id(void)
{
return readl(BASEADDR_V7M_SCB + V7M_SCB_CPUID);
}
static inline unsigned int __attribute_const__ read_cpuid_cachetype(void)
{
return readl(BASEADDR_V7M_SCB + V7M_SCB_CTR);
}
static inline unsigned int __attribute_const__ read_cpuid_mputype(void)
{
return readl(BASEADDR_V7M_SCB + MPU_TYPE);
}
#else /* ifdef CONFIG_CPU_CP15 / elif defined(CONFIG_CPU_V7M) */
static inline unsigned int __attribute_const__ read_cpuid_id(void)
{
return processor_id;
}
#endif /* ifdef CONFIG_CPU_CP15 / else */
static inline unsigned int __attribute_const__ read_cpuid_implementor(void)
{
return (read_cpuid_id() & 0xFF000000) >> 24;
}
static inline unsigned int __attribute_const__ read_cpuid_revision(void)
{
return read_cpuid_id() & 0x0000000f;
}
/*
* The CPU part number is meaningless without referring to the CPU
* implementer: implementers are free to define their own part numbers
* which are permitted to clash with other implementer part numbers.
*/
static inline unsigned int __attribute_const__ read_cpuid_part(void)
{
return read_cpuid_id() & ARM_CPU_PART_MASK;
}
static inline unsigned int __attribute_const__ __deprecated read_cpuid_part_number(void)
{
return read_cpuid_id() & 0xFFF0;
}
static inline unsigned int __attribute_const__ xscale_cpu_arch_version(void)
{
return read_cpuid_id() & ARM_CPU_XSCALE_ARCH_MASK;
}
static inline unsigned int __attribute_const__ read_cpuid_tcmstatus(void)
{
return read_cpuid(CPUID_TCM);
}
static inline unsigned int __attribute_const__ read_cpuid_mpidr(void)
{
return read_cpuid(CPUID_MPIDR);
}
/* StrongARM-11x0 CPUs */
#define cpu_is_sa1100() (read_cpuid_part() == ARM_CPU_PART_SA1100)
#define cpu_is_sa1110() (read_cpuid_part() == ARM_CPU_PART_SA1110)
/*
* Intel's XScale3 core supports some v6 features (supersections, L2)
* but advertises itself as v5 as it does not support the v6 ISA. For
* this reason, we need a way to explicitly test for this type of CPU.
*/
#ifndef CONFIG_CPU_XSC3
#define cpu_is_xsc3() 0
#else
static inline int cpu_is_xsc3(void)
{
unsigned int id;
id = read_cpuid_id() & 0xffffe000;
/* It covers both Intel ID and Marvell ID */
if ((id == 0x69056000) || (id == 0x56056000))
return 1;
return 0;
}
#endif
#if !defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_CPU_XSC3) && \
!defined(CONFIG_CPU_MOHAWK)
#define cpu_is_xscale_family() 0
#else
static inline int cpu_is_xscale_family(void)
{
unsigned int id;
id = read_cpuid_id() & 0xffffe000;
switch (id) {
case 0x69052000: /* Intel XScale 1 */
case 0x69054000: /* Intel XScale 2 */
case 0x69056000: /* Intel XScale 3 */
case 0x56056000: /* Marvell XScale 3 */
case 0x56158000: /* Marvell Mohawk */
return 1;
}
return 0;
}
#endif
/*
* Marvell's PJ4 and PJ4B cores are based on V7 version,
* but require a specical sequence for enabling coprocessors.
* For this reason, we need a way to distinguish them.
*/
#if defined(CONFIG_CPU_PJ4) || defined(CONFIG_CPU_PJ4B)
static inline int cpu_is_pj4(void)
{
unsigned int id;
id = read_cpuid_id();
if ((id & 0xff0fff00) == 0x560f5800)
return 1;
return 0;
}
#else
#define cpu_is_pj4() 0
#endif
static inline int __attribute_const__ cpuid_feature_extract_field(u32 features,
int field)
{
int feature = (features >> field) & 15;
/* feature registers are signed values */
if (feature > 7)
feature -= 16;
return feature;
}
#define cpuid_feature_extract(reg, field) \
cpuid_feature_extract_field(read_cpuid_ext(reg), field)
#endif /* __ASSEMBLY__ */
#endif
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