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x86/microcode_intel.h: Define functions and macros for early loading ucode

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Define some functions and macros that will be used in early loading ucode. Some
of them are moved from microcode_intel.c driver in order to be called in early
boot phase before module can be called.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-3-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Fenghua Yu
2012-12-20 23:44:22 -08:00
committed by H. Peter Anvin
parent 0d91ea86a8
commit 9cd4d78e21
4 changed files with 122 additions and 171 deletions
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85
arch/x86/include/asm/microcode_intel.h Normal file
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#ifndef _ASM_X86_MICROCODE_INTEL_H
#define _ASM_X86_MICROCODE_INTEL_H
#include <asm/microcode.h>
struct microcode_header_intel {
unsigned int hdrver;
unsigned int rev;
unsigned int date;
unsigned int sig;
unsigned int cksum;
unsigned int ldrver;
unsigned int pf;
unsigned int datasize;
unsigned int totalsize;
unsigned int reserved[3];
};
struct microcode_intel {
struct microcode_header_intel hdr;
unsigned int bits[0];
};
/* microcode format is extended from prescott processors */
struct extended_signature {
unsigned int sig;
unsigned int pf;
unsigned int cksum;
};
struct extended_sigtable {
unsigned int count;
unsigned int cksum;
unsigned int reserved[3];
struct extended_signature sigs[0];
};
#define DEFAULT_UCODE_DATASIZE (2000)
#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel))
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
#define EXT_HEADER_SIZE (sizeof(struct extended_sigtable))
#define EXT_SIGNATURE_SIZE (sizeof(struct extended_signature))
#define DWSIZE (sizeof(u32))
#define get_totalsize(mc) \
(((struct microcode_intel *)mc)->hdr.totalsize ? \
((struct microcode_intel *)mc)->hdr.totalsize : \
DEFAULT_UCODE_TOTALSIZE)
#define get_datasize(mc) \
(((struct microcode_intel *)mc)->hdr.datasize ? \
((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
#define sigmatch(s1, s2, p1, p2) \
(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))
#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
extern int
get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
extern int microcode_sanity_check(void *mc, int print_err);
extern int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev);
extern int
update_match_revision(struct microcode_header_intel *mc_header, int rev);
#ifdef CONFIG_MICROCODE_INTEL_EARLY
extern void __init load_ucode_intel_bsp(void);
extern void __cpuinit load_ucode_intel_ap(void);
extern void show_ucode_info_early(void);
#else
static inline __init void load_ucode_intel_bsp(void) {}
static inline __cpuinit void load_ucode_intel_ap(void) {}
static inline void show_ucode_info_early(void) {}
#endif
#if defined(CONFIG_MICROCODE_INTEL_EARLY) && defined(CONFIG_HOTPLUG_CPU)
extern int save_mc_for_early(u8 *mc);
#else
static inline int save_mc_for_early(u8 *mc)
{
return 0;
}
#endif
#endif /* _ASM_X86_MICROCODE_INTEL_H */