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Merged
NikolajSchlej merged 2 commits into from
Feb 27, 2026
Merged

Add support for AMD microcode #461

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63b64ac
Add support for AMD Microcode
pagabuc Feb 18, 2026
134a93b
add amd_microcode.cpp to meson.build
pagabuc Feb 25, 2026
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1 change: 1 addition & 0 deletions UEFIExtract/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ SET(PROJECT_SOURCES
../common/nvramparser.cpp
../common/meparser.cpp
../common/ffsparser.cpp
../common/amd_microcode.cpp
../common/fitparser.cpp
../common/ffsreport.cpp
../common/peimage.cpp
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1 change: 1 addition & 0 deletions UEFIFind/CMakeLists.txt
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Expand Up @@ -17,6 +17,7 @@ SET(PROJECT_SOURCES
../common/nvram.cpp
../common/nvramparser.cpp
../common/ffsparser.cpp
../common/amd_microcode.cpp
../common/fitparser.cpp
../common/peimage.cpp
../common/treeitem.cpp
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1 change: 1 addition & 0 deletions UEFITool/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ SET(PROJECT_SOURCES
../common/utility.cpp
../common/ffsbuilder.cpp
../common/ffsparser.cpp
../common/amd_microcode.cpp
../common/ffsreport.cpp
../common/treeitem.cpp
../common/treemodel.cpp
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2 changes: 2 additions & 0 deletions UEFITool/uefitool.pro
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Expand Up @@ -39,6 +39,7 @@ HEADERS += uefitool.h \
../common/treeitem.h \
../common/intel_fit.h \
../common/intel_microcode.h \
../common/amd_microcode.h \
../common/treemodel.h \
../common/LZMA/LzmaCompress.h \
../common/LZMA/LzmaDecompress.h \
Expand Down Expand Up @@ -109,6 +110,7 @@ SOURCES += uefitool_main.cpp \
../common/utility.cpp \
../common/ffsbuilder.cpp \
../common/ffsparser.cpp \
../common/amd_microcode.cpp \
../common/ffsreport.cpp \
../common/treeitem.cpp \
../common/treemodel.cpp \
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77 changes: 77 additions & 0 deletions common/amd_microcode.cpp
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@@ -0,0 +1,77 @@
#include "amd_microcode.h"
#include "basetypes.h"

UINT32 getDataSizeMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
if (ucodeHeader->LoaderID >= 0x8005) {
return ((ucodeHeader->InitializationFlag << 8) | ucodeHeader->DataSize) * 0x10;
}

return ucodeHeader->DataSize;
}

UINT32 getSizeMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
UINT32 microcodeDataLen = getDataSizeMicrocodeAmd(ucodeHeader);
UINT32 cpuIdByte = (getCpuIdMicrocodeAmd(ucodeHeader) >> 16) & 0xFF;
UINT32 microcodeLen = 0;

if (microcodeDataLen == 0x20) {
microcodeLen = 0x3C0;
} else if (microcodeDataLen == 0x10) {
microcodeLen = 0x200;
} else if (microcodeDataLen) {
microcodeLen = microcodeDataLen;
} else if (cpuIdByte == 0x50) {
microcodeLen = 0x620;
} else if (cpuIdByte == 0x58) {
microcodeLen = 0x567;
} else if (cpuIdByte == 0x60 || cpuIdByte == 0x61 || cpuIdByte == 0x63 || cpuIdByte == 0x66 || cpuIdByte <= 0x67) {
microcodeLen = 0xA20;
} else if (cpuIdByte == 0x68 || cpuIdByte == 0x69) {
microcodeLen = 0x980;
} else if (cpuIdByte == 0x70 || cpuIdByte == 0x73) {
microcodeLen = 0xD60;
} else if (cpuIdByte >= 0x80 && cpuIdByte <= 0x83 || cpuIdByte >= 0x85 && cpuIdByte <= 0x8A) {
microcodeLen = 0xC80;
} else if (cpuIdByte >= 0xA0 && cpuIdByte <= 0xA7 || cpuIdByte == 0xAA) {
microcodeLen = 0x15C0;
} else if (cpuIdByte == 0xB4) {
microcodeLen = 0x3820;
}

return microcodeLen;
}

UINT32 getCpuIdMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
return (((ucodeHeader->ProcessorSignature >> 8) & 0xFF) << 16) | (0x0f << 8) |
(ucodeHeader->ProcessorSignature & 0xff);
}

UINT16 getYearMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
if (getCpuIdMicrocodeAmd(ucodeHeader) == 0x00800F11 && ucodeHeader->UpdateRevision == 0x8001105 &&
ucodeHeader->DateYear == 0x2016) {
return 0x2017;
}

return ucodeHeader->DateYear;
}

UINT8 getMonthMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
if (getCpuIdMicrocodeAmd(ucodeHeader) == 0x00300F10 && ucodeHeader->UpdateRevision == 0x3000027 &&
ucodeHeader->DateMonth == 0x13) {
return 0x12;
} else if (getCpuIdMicrocodeAmd(ucodeHeader) == 0x00730F01 && ucodeHeader->UpdateRevision == 0x7030106 &&
ucodeHeader->DateMonth == 0x09) {
return 0x02;
}

return ucodeHeader->DateMonth;
}

UINT8 getDayMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader) {
if (getCpuIdMicrocodeAmd(ucodeHeader) == 0x00730F01 && ucodeHeader->UpdateRevision == 0x7030106 &&
ucodeHeader->DateDay == 0x02) {
return 0x09;
}

return ucodeHeader->DateDay;
}
41 changes: 41 additions & 0 deletions common/amd_microcode.h
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@@ -0,0 +1,41 @@
#ifndef AMD_MICROCODE_H
#define AMD_MICROCODE_H

#include "basetypes.h"
#include "ubytearray.h"

// Make sure we use right packing rules
#pragma pack(push, 1)

typedef struct AMD_MICROCODE_HEADER_ {
UINT16 DateYear;
UINT8 DateDay;
UINT8 DateMonth;
UINT32 UpdateRevision;
UINT16 LoaderID;
UINT8 DataSize;
UINT8 InitializationFlag;
UINT32 DataChecksum;
UINT16 NorthBridgeVEN_ID;
UINT16 NorthBridgeDEV_ID;
UINT16 SouthBridgeVEN_ID;
UINT16 SouthBridgeDEV_ID;
UINT16 ProcessorSignature;
UINT8 NorthBridgeREV_ID;
UINT8 SouthBridgeREV_ID;
UINT8 BiosApiRevision;
UINT8 LoadControl;
UINT8 Reserved_1E;
UINT8 Reserved_1F;
} AMD_MICROCODE_HEADER;

UINT32 getDataSizeMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);
UINT32 getSizeMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);
UINT32 getCpuIdMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);
UINT16 getYearMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);
UINT8 getMonthMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);
UINT8 getDayMicrocodeAmd(const AMD_MICROCODE_HEADER *ucodeHeader);

#pragma pack(pop)

#endif // AMD_MICROCODE_H
4 changes: 4 additions & 0 deletions common/ffs.cpp
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Expand Up @@ -85,6 +85,10 @@ extern const UByteArray EFI_DXE_CORE_GUID // D6A2CB7F-6A18-4E2F-B43B-9920A733700
extern const UByteArray AMD_COMPRESSED_RAW_FILE_GUID //20BC8AC9-94D1-4208-AB28-5D673FD73487
("\xC9\x8A\xBC\x20\xD1\x94\x08\x42\xAB\x28\x5D\x67\x3F\xD7\x34\x87", 16);

// TE/PE files containing AMD microcode
extern const UByteArray AMD_MICROCODE_FILE_GUID // DE3E049C-A218-4891-8658-5FC0FA84C788
("\x9C\x04\x3E\xDE\x18\xA2\x91\x48\x86\x58\x5F\xC0\xFA\x84\xC7\x88", 16);

// Insyde Flash Device Map GUIDs
extern const UByteArray INSYDE_FLASH_MAP_REGION_BOOT_FV_GUID
("\x56\x6d\xd7\xe3\x8a\x98\x6b\x4d\x89\x13\x64\xf2\xdf\x1d\xf6\xa6", 16);
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3 changes: 3 additions & 0 deletions common/ffs.h
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Expand Up @@ -370,6 +370,9 @@ extern const UByteArray EFI_DXE_CORE_GUID; // D6A2CB7F-6A18-4E2F-B43B-9920A73370
// AMD compressed raw file
extern const UByteArray AMD_COMPRESSED_RAW_FILE_GUID; //20BC8AC9-94D1-4208-AB28-5D673FD73487

// TE/PE files containing AMD microcode
extern const UByteArray AMD_MICROCODE_FILE_GUID; // DE3E049C-A218-4891-8658-5FC0FA84C788

// FFS size conversion routines
extern VOID uint32ToUint24(UINT32 size, UINT8* ffsSize);
extern UINT32 uint24ToUint32(const UINT8* ffsSize);
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