1 #ifndef _ASM_X86_MICROCODE_H
2 #define _ASM_X86_MICROCODE_H
4 #define native_rdmsr(msr, val1, val2) \
6 u64 __val = native_read_msr((msr)); \
7 (void)((val1) = (u32)__val); \
8 (void)((val2) = (u32)(__val >> 32)); \
11 #define native_wrmsr(msr, low, high) \
12 native_write_msr(msr, low, high)
14 #define native_wrmsrl(msr, val) \
15 native_write_msr((msr), \
17 (u32)((u64)(val) >> 32))
19 struct cpu_signature {
27 enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
29 struct microcode_ops {
30 enum ucode_state (*request_microcode_user) (int cpu,
31 const void __user *buf, size_t size);
33 enum ucode_state (*request_microcode_fw) (int cpu, struct device *,
36 void (*microcode_fini_cpu) (int cpu);
39 * The generic 'microcode_core' part guarantees that
40 * the callbacks below run on a target cpu when they
42 * See also the "Synchronization" section in microcode_core.c.
44 int (*apply_microcode) (int cpu);
45 int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
48 struct ucode_cpu_info {
49 struct cpu_signature cpu_sig;
53 extern struct ucode_cpu_info ucode_cpu_info[];
55 #ifdef CONFIG_MICROCODE_INTEL
56 extern struct microcode_ops * __init init_intel_microcode(void);
58 static inline struct microcode_ops * __init init_intel_microcode(void)
62 #endif /* CONFIG_MICROCODE_INTEL */
64 #ifdef CONFIG_MICROCODE_AMD
65 extern struct microcode_ops * __init init_amd_microcode(void);
66 extern void __exit exit_amd_microcode(void);
68 static inline struct microcode_ops * __init init_amd_microcode(void)
72 static inline void __exit exit_amd_microcode(void) {}
75 #ifdef CONFIG_MICROCODE_EARLY
76 #define MAX_UCODE_COUNT 128
77 extern void __init load_ucode_bsp(void);
78 extern void load_ucode_ap(void);
79 extern int __init save_microcode_in_initrd(void);
81 static inline void __init load_ucode_bsp(void) {}
82 static inline void load_ucode_ap(void) {}
83 static inline int __init save_microcode_in_initrd(void)
89 #endif /* _ASM_X86_MICROCODE_H */