Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */