1#ifndef _ASM_X86_MICROCODE_INTEL_H
 2#define _ASM_X86_MICROCODE_INTEL_H
 3
 4#include <asm/microcode.h>
 5
 6struct microcode_header_intel {
 7	unsigned int            hdrver;
 8	unsigned int            rev;
 9	unsigned int            date;
10	unsigned int            sig;
11	unsigned int            cksum;
12	unsigned int            ldrver;
13	unsigned int            pf;
14	unsigned int            datasize;
15	unsigned int            totalsize;
16	unsigned int            reserved[3];
17};
18
19struct microcode_intel {
20	struct microcode_header_intel hdr;
21	unsigned int            bits[0];
22};
23
24/* microcode format is extended from prescott processors */
25struct extended_signature {
26	unsigned int            sig;
27	unsigned int            pf;
28	unsigned int            cksum;
29};
30
31struct extended_sigtable {
32	unsigned int            count;
33	unsigned int            cksum;
34	unsigned int            reserved[3];
35	struct extended_signature sigs[0];
36};
37
38#define DEFAULT_UCODE_DATASIZE	(2000)
39#define MC_HEADER_SIZE		(sizeof(struct microcode_header_intel))
40#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
41#define EXT_HEADER_SIZE		(sizeof(struct extended_sigtable))
42#define EXT_SIGNATURE_SIZE	(sizeof(struct extended_signature))
43
44#define get_totalsize(mc) \
45	(((struct microcode_intel *)mc)->hdr.datasize ? \
46	 ((struct microcode_intel *)mc)->hdr.totalsize : \
47	 DEFAULT_UCODE_TOTALSIZE)
48
49#define get_datasize(mc) \
50	(((struct microcode_intel *)mc)->hdr.datasize ? \
51	 ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
52
53#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
54
55extern int has_newer_microcode(void *mc, unsigned int csig, int cpf, int rev);
56extern int microcode_sanity_check(void *mc, int print_err);
57extern int find_matching_signature(void *mc, unsigned int csig, int cpf);
58
59#ifdef CONFIG_MICROCODE_INTEL
60extern void __init load_ucode_intel_bsp(void);
61extern void load_ucode_intel_ap(void);
62extern void show_ucode_info_early(void);
63extern int __init save_microcode_in_initrd_intel(void);
64void reload_ucode_intel(void);
65#else
66static inline __init void load_ucode_intel_bsp(void) {}
67static inline void load_ucode_intel_ap(void) {}
68static inline void show_ucode_info_early(void) {}
69static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
70static inline void reload_ucode_intel(void) {}
71#endif
72
73#ifdef CONFIG_HOTPLUG_CPU
74extern int save_mc_for_early(u8 *mc);
75#else
76static inline int save_mc_for_early(u8 *mc) { return 0; }
77#endif
78#endif /* _ASM_X86_MICROCODE_INTEL_H */