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f3ad136d6e
Check final patch levels for AMD only on the BSP. This way, we decide early and only once whether to continue loading or to leave the loader disabled on such systems. Simplify a lot. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/20170120202955.4091-13-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef _ASM_X86_MICROCODE_AMD_H
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#define _ASM_X86_MICROCODE_AMD_H
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#include <asm/microcode.h>
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#define UCODE_MAGIC 0x00414d44
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#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000
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#define UCODE_UCODE_TYPE 0x00000001
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#define SECTION_HDR_SIZE 8
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#define CONTAINER_HDR_SZ 12
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struct equiv_cpu_entry {
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u32 installed_cpu;
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u32 fixed_errata_mask;
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u32 fixed_errata_compare;
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u16 equiv_cpu;
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u16 res;
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} __attribute__((packed));
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struct microcode_header_amd {
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u32 data_code;
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u32 patch_id;
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u16 mc_patch_data_id;
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u8 mc_patch_data_len;
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u8 init_flag;
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u32 mc_patch_data_checksum;
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u32 nb_dev_id;
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u32 sb_dev_id;
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u16 processor_rev_id;
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u8 nb_rev_id;
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u8 sb_rev_id;
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u8 bios_api_rev;
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u8 reserved1[3];
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u32 match_reg[8];
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} __attribute__((packed));
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struct microcode_amd {
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struct microcode_header_amd hdr;
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unsigned int mpb[0];
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};
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#define PATCH_MAX_SIZE PAGE_SIZE
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#ifdef CONFIG_MICROCODE_AMD
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extern void __init load_ucode_amd_bsp(unsigned int family);
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extern void load_ucode_amd_ap(unsigned int family);
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extern int __init save_microcode_in_initrd_amd(unsigned int family);
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void reload_ucode_amd(void);
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#else
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static inline void __init load_ucode_amd_bsp(unsigned int family) {}
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static inline void load_ucode_amd_ap(unsigned int family) {}
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static inline int __init
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save_microcode_in_initrd_amd(unsigned int family) { return -EINVAL; }
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void reload_ucode_amd(void) {}
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#endif
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#endif /* _ASM_X86_MICROCODE_AMD_H */
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