From a76096a6571d5389376753c2e18b30a9791fa072 Mon Sep 17 00:00:00 2001 From: Jacob Shin Date: Thu, 30 May 2013 14:09:18 -0500 Subject: x86, microcode, amd: Refactor functions to prepare for early loading In preparation work for early loading, refactor some common functions that will be shared, and move some struct defines to a common header file. Signed-off-by: Jacob Shin Link: http://lkml.kernel.org/r/1369940959-2077-4-git-send-email-jacob.shin@amd.com Signed-off-by: H. Peter Anvin Cc: Fenghua Yu --- arch/x86/include/asm/microcode_amd.h | 64 ++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 arch/x86/include/asm/microcode_amd.h (limited to 'arch/x86/include/asm/microcode_amd.h') diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h new file mode 100644 index 000000000000..a57d9b75f30b --- /dev/null +++ b/arch/x86/include/asm/microcode_amd.h @@ -0,0 +1,64 @@ +#ifndef _ASM_X86_MICROCODE_AMD_H +#define _ASM_X86_MICROCODE_AMD_H + +#include + +#define UCODE_MAGIC 0x00414d44 +#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000 +#define UCODE_UCODE_TYPE 0x00000001 + +#define SECTION_HDR_SIZE 8 +#define CONTAINER_HDR_SZ 12 + +struct equiv_cpu_entry { + u32 installed_cpu; + u32 fixed_errata_mask; + u32 fixed_errata_compare; + u16 equiv_cpu; + u16 res; +} __attribute__((packed)); + +struct microcode_header_amd { + u32 data_code; + u32 patch_id; + u16 mc_patch_data_id; + u8 mc_patch_data_len; + u8 init_flag; + u32 mc_patch_data_checksum; + u32 nb_dev_id; + u32 sb_dev_id; + u16 processor_rev_id; + u8 nb_rev_id; + u8 sb_rev_id; + u8 bios_api_rev; + u8 reserved1[3]; + u32 match_reg[8]; +} __attribute__((packed)); + +struct microcode_amd { + struct microcode_header_amd hdr; + unsigned int mpb[0]; +}; + +static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table, + unsigned int sig) +{ + int i = 0; + + if (!equiv_cpu_table) + return 0; + + while (equiv_cpu_table[i].installed_cpu != 0) { + if (sig == equiv_cpu_table[i].installed_cpu) + return equiv_cpu_table[i].equiv_cpu; + + i++; + } + return 0; +} + +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); + +#endif /* _ASM_X86_MICROCODE_AMD_H */ -- cgit v1.2.1