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x86, microcode, amd: Early microcode patch loading support for AMD

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Add early microcode patch loading support for AMD.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Link: http://lkml.kernel.org/r/1369940959-2077-5-git-send-email-jacob.shin@amd.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
This commit is contained in:
Jacob Shin 2013-05-30 14:09:19 -05:00 • committed by H. Peter Anvin
parent a76096a657
commit 757885e94a
7 changed files with 310 additions and 17 deletions
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14
arch/x86/include/asm/microcode_amd.h
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@ -61,4 +61,18 @@ extern int __apply_microcode_amd(struct microcode_amd *mc_amd);
extern int apply_microcode_amd(int cpu);
extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size);
#ifdef CONFIG_MICROCODE_AMD_EARLY
#ifdef CONFIG_X86_32
#define MPB_MAX_SIZE PAGE_SIZE
extern u8 __cpuinitdata amd_bsp_mpb[MPB_MAX_SIZE];
#endif
extern void __init load_ucode_amd_bsp(void);
extern void __cpuinit load_ucode_amd_ap(void);
extern int __init save_microcode_in_initrd_amd(void);
#else
static inline void __init load_ucode_amd_bsp(void) {}
static inline void __cpuinit load_ucode_amd_ap(void) {}
static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; }
#endif
#endif /* _ASM_X86_MICROCODE_AMD_H */