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1#ifndef _ASM_X86_MICROCODE_H
2#define _ASM_X86_MICROCODE_H
3
4struct cpu_signature {
5 unsigned int sig;
6 unsigned int pf;
7 unsigned int rev;
8};
9
10struct device;
11
12enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
13
14struct microcode_ops {
15 enum ucode_state (*request_microcode_user) (int cpu,
16 const void __user *buf, size_t size);
17
18 enum ucode_state (*request_microcode_fw) (int cpu, struct device *,
19 bool refresh_fw);
20
21 void (*microcode_fini_cpu) (int cpu);
22
23 /*
24 * The generic 'microcode_core' part guarantees that
25 * the callbacks below run on a target cpu when they
26 * are being called.
27 * See also the "Synchronization" section in microcode_core.c.
28 */
29 int (*apply_microcode) (int cpu);
30 int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
31};
32
33struct ucode_cpu_info {
34 struct cpu_signature cpu_sig;
35 int valid;
36 void *mc;
37};
38extern struct ucode_cpu_info ucode_cpu_info[];
39
40#ifdef CONFIG_MICROCODE_INTEL
41extern struct microcode_ops * __init init_intel_microcode(void);
42#else
43static inline struct microcode_ops * __init init_intel_microcode(void)
44{
45 return NULL;
46}
47#endif /* CONFIG_MICROCODE_INTEL */
48
49#ifdef CONFIG_MICROCODE_AMD
50extern struct microcode_ops * __init init_amd_microcode(void);
51extern void __exit exit_amd_microcode(void);
52#else
53static inline struct microcode_ops * __init init_amd_microcode(void)
54{
55 return NULL;
56}
57static inline void __exit exit_amd_microcode(void) {}
58#endif
59
60#ifdef CONFIG_MICROCODE_EARLY
61#define MAX_UCODE_COUNT 128
62extern void __init load_ucode_bsp(void);
63extern void load_ucode_ap(void);
64extern int __init save_microcode_in_initrd(void);
65#else
66static inline void __init load_ucode_bsp(void) {}
67static inline void load_ucode_ap(void) {}
68static inline int __init save_microcode_in_initrd(void)
69{
70 return 0;
71}
72#endif
73
74#endif /* _ASM_X86_MICROCODE_H */