| /* SPDX-License-Identifier: GPL-2.0 */ |
| #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 get_totalsize(mc) \ |
| (((struct microcode_intel *)mc)->hdr.datasize ? \ |
| ((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 exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE) |
| |
| static inline u32 intel_get_microcode_revision(void) |
| { |
| u32 rev, dummy; |
| |
| native_wrmsrl(MSR_IA32_UCODE_REV, 0); |
| |
| /* As documented in the SDM: Do a CPUID 1 here */ |
| native_cpuid_eax(1); |
| |
| /* get the current revision from MSR 0x8B */ |
| native_rdmsr(MSR_IA32_UCODE_REV, dummy, rev); |
| |
| return rev; |
| } |
| |
| #ifdef CONFIG_MICROCODE_INTEL |
| extern void __init load_ucode_intel_bsp(void); |
| extern void load_ucode_intel_ap(void); |
| extern void show_ucode_info_early(void); |
| extern int __init save_microcode_in_initrd_intel(void); |
| void reload_ucode_intel(void); |
| #else |
| static inline __init void load_ucode_intel_bsp(void) {} |
| static inline void load_ucode_intel_ap(void) {} |
| static inline void show_ucode_info_early(void) {} |
| static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; } |
| static inline void reload_ucode_intel(void) {} |
| #endif |
| |
| #endif /* _ASM_X86_MICROCODE_INTEL_H */ |