1 #ifndef __ASM_ARM_CPUTYPE_H
2 #define __ASM_ARM_CPUTYPE_H
4 #include <linux/stringify.h>
5 #include <linux/kernel.h>
8 #define CPUID_CACHETYPE 1
10 #define CPUID_TLBTYPE 3
12 #define CPUID_REVIDR 6
14 #define CPUID_EXT_PFR0 "c1, 0"
15 #define CPUID_EXT_PFR1 "c1, 1"
16 #define CPUID_EXT_DFR0 "c1, 2"
17 #define CPUID_EXT_AFR0 "c1, 3"
18 #define CPUID_EXT_MMFR0 "c1, 4"
19 #define CPUID_EXT_MMFR1 "c1, 5"
20 #define CPUID_EXT_MMFR2 "c1, 6"
21 #define CPUID_EXT_MMFR3 "c1, 7"
22 #define CPUID_EXT_ISAR0 "c2, 0"
23 #define CPUID_EXT_ISAR1 "c2, 1"
24 #define CPUID_EXT_ISAR2 "c2, 2"
25 #define CPUID_EXT_ISAR3 "c2, 3"
26 #define CPUID_EXT_ISAR4 "c2, 4"
27 #define CPUID_EXT_ISAR5 "c2, 5"
29 #define MPIDR_SMP_BITMASK (0x3 << 30)
30 #define MPIDR_SMP_VALUE (0x2 << 30)
32 #define MPIDR_MT_BITMASK (0x1 << 24)
34 #define MPIDR_HWID_BITMASK 0xFFFFFF
36 #define MPIDR_INVALID (~MPIDR_HWID_BITMASK)
38 #define MPIDR_LEVEL_BITS 8
39 #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
41 #define MPIDR_AFFINITY_LEVEL(mpidr, level) \
42 ((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK)
44 #define ARM_CPU_IMP_ARM 0x41
45 #define ARM_CPU_IMP_INTEL 0x69
47 #define ARM_CPU_PART_ARM1136 0xB360
48 #define ARM_CPU_PART_ARM1156 0xB560
49 #define ARM_CPU_PART_ARM1176 0xB760
50 #define ARM_CPU_PART_ARM11MPCORE 0xB020
51 #define ARM_CPU_PART_CORTEX_A8 0xC080
52 #define ARM_CPU_PART_CORTEX_A9 0xC090
53 #define ARM_CPU_PART_CORTEX_A5 0xC050
54 #define ARM_CPU_PART_CORTEX_A15 0xC0F0
55 #define ARM_CPU_PART_CORTEX_A7 0xC070
56 #define ARM_CPU_PART_CORTEX_A12 0xC0D0
57 #define ARM_CPU_PART_CORTEX_A17 0xC0E0
58 #define ARM_CPU_PART_CORTEX_A53 0xD030
60 #define ARM_CPU_XSCALE_ARCH_MASK 0xe000
61 #define ARM_CPU_XSCALE_ARCH_V1 0x2000
62 #define ARM_CPU_XSCALE_ARCH_V2 0x4000
63 #define ARM_CPU_XSCALE_ARCH_V3 0x6000
65 extern unsigned int processor_id
;
67 #ifdef CONFIG_CPU_CP15
68 #define read_cpuid(reg) \
71 asm("mrc p15, 0, %0, c0, c0, " __stringify(reg) \
78 #define read_cpuid_ext(ext_reg) \
81 asm("mrc p15, 0, %0, c0, " ext_reg \
88 #else /* ifdef CONFIG_CPU_CP15 */
91 * read_cpuid and read_cpuid_ext should only ever be called on machines that
92 * have cp15 so warn on other usages.
94 #define read_cpuid(reg) \
100 #define read_cpuid_ext(reg) read_cpuid(reg)
102 #endif /* ifdef CONFIG_CPU_CP15 / else */
104 #ifdef CONFIG_CPU_CP15
106 * The CPU ID never changes at run time, so we might as well tell the
107 * compiler that it's constant. Use this function to read the CPU ID
108 * rather than directly reading processor_id or read_cpuid() directly.
110 static inline unsigned int __attribute_const__
read_cpuid_id(void)
112 return read_cpuid(CPUID_ID
);
115 #else /* ifdef CONFIG_CPU_CP15 */
117 static inline unsigned int __attribute_const__
read_cpuid_id(void)
122 #endif /* ifdef CONFIG_CPU_CP15 / else */
124 static inline unsigned int __attribute_const__
read_cpuid_implementor(void)
126 return (read_cpuid_id() & 0xFF000000) >> 24;
129 static inline unsigned int __attribute_const__
read_cpuid_part_number(void)
131 return read_cpuid_id() & 0xFFF0;
134 static inline unsigned int __attribute_const__
xscale_cpu_arch_version(void)
136 return read_cpuid_part_number() & ARM_CPU_XSCALE_ARCH_MASK
;
139 static inline unsigned int __attribute_const__
read_cpuid_cachetype(void)
141 return read_cpuid(CPUID_CACHETYPE
);
144 static inline unsigned int __attribute_const__
read_cpuid_tcmstatus(void)
146 return read_cpuid(CPUID_TCM
);
149 static inline unsigned int __attribute_const__
read_cpuid_mpidr(void)
151 return read_cpuid(CPUID_MPIDR
);
155 * Intel's XScale3 core supports some v6 features (supersections, L2)
156 * but advertises itself as v5 as it does not support the v6 ISA. For
157 * this reason, we need a way to explicitly test for this type of CPU.
159 #ifndef CONFIG_CPU_XSC3
160 #define cpu_is_xsc3() 0
162 static inline int cpu_is_xsc3(void)
165 id
= read_cpuid_id() & 0xffffe000;
166 /* It covers both Intel ID and Marvell ID */
167 if ((id
== 0x69056000) || (id
== 0x56056000))
174 #if !defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_CPU_XSC3)
175 #define cpu_is_xscale() 0
177 #define cpu_is_xscale() 1