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#ifndef _ASM_X86_MICROCODE_H
#define _ASM_X86_MICROCODE_H
struct cpu_signature {
unsigned int sig;
unsigned int pf;
unsigned int rev;
struct device;
enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND };
struct microcode_ops {
enum ucode_state (*request_microcode_user) (int cpu,
const void __user *buf, size_t size);
enum ucode_state (*request_microcode_fw) (int cpu, struct device *,
bool refresh_fw);
void (*microcode_fini_cpu) (int cpu);
* The generic 'microcode_core' part guarantees that
* the callbacks below run on a target cpu when they
* are being called.
* See also the "Synchronization" section in microcode_core.c.
int (*apply_microcode) (int cpu);
int (*collect_cpu_info) (int cpu, struct cpu_signature *csig);
struct ucode_cpu_info {
struct cpu_signature cpu_sig;
int valid;
void *mc;
extern struct ucode_cpu_info ucode_cpu_info[];
extern struct microcode_ops * __init init_intel_microcode(void);
static inline struct microcode_ops * __init init_intel_microcode(void)
return NULL;
extern struct microcode_ops * __init init_amd_microcode(void);
extern void __exit exit_amd_microcode(void);
static inline struct microcode_ops * __init init_amd_microcode(void)
return NULL;
static inline void __exit exit_amd_microcode(void) {}
#define MAX_UCODE_COUNT 128
extern void __init load_ucode_bsp(void);
extern __init void load_ucode_ap(void);
extern int __init save_microcode_in_initrd(void);
static inline void __init load_ucode_bsp(void) {}
static inline __init void load_ucode_ap(void) {}
static inline int __init save_microcode_in_initrd(void)
return 0;
#endif /* _ASM_X86_MICROCODE_H */