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Fix Intel descriptor version parsing

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This commit is contained in:
vit9696 2018-05-06 15:22:25 +03:00
parent 0438dbbd46
commit fc82bce195
2 changed files with 22 additions and 2 deletions
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18
common/descriptor.h
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@ -34,6 +34,22 @@ typedef struct FLASH_DESCRIPTOR_HEADER_ {
// Maximum base value in descriptor map
#define FLASH_DESCRIPTOR_MAX_BASE 0xE0
// Descriptor version was reserved in older firmware
#define FLASH_DESCRIPTOR_VERSION_INVALID 0xFFFFFFFF
// Descriptor version present in Coffee Lake and newer
typedef struct _FLASH_DESCRIPTOR_VERSION_V3 {
UINT32 Reserved : 14;
UINT32 VersionMinor : 7;
UINT32 VersionMajor : 11;
} FLASH_DESCRIPTOR_VERSION_V3;
// Descripror version
typedef union _FLASH_DESCRIPTOR_VERSION {
UINT32 RawValue;
FLASH_DESCRIPTOR_VERSION_V3 V3;
} FLASH_DESCRIPTOR_VERSION;
// Descriptor map
// Base fields are storing bits [11:4] of actual base addresses, all other bits are 0
typedef struct FLASH_DESCRIPTOR_MAP_ {
@ -54,6 +70,8 @@ typedef struct FLASH_DESCRIPTOR_MAP_ {
UINT32 ProcStrapsBase : 8;
UINT32 NumberOfProcStraps : 8; // One-based number of UINT32s to read as processor straps, min=0, max=255 (1 Kb)
UINT32 : 16;
// FLMAP 3
FLASH_DESCRIPTOR_VERSION Version; // Reserved prior to v3
} FLASH_DESCRIPTOR_MAP;
// Component section

6
common/ffsparser.cpp
View File

@ -317,9 +317,11 @@ USTATUS FfsParser::parseIntelImage(const UByteArray & intelImage, const UINT32 l
const FLASH_DESCRIPTOR_REGION_SECTION* regionSection = (const FLASH_DESCRIPTOR_REGION_SECTION*)calculateAddress8((UINT8*)descriptor, descriptorMap->RegionBase);
const FLASH_DESCRIPTOR_COMPONENT_SECTION* componentSection = (const FLASH_DESCRIPTOR_COMPONENT_SECTION*)calculateAddress8((UINT8*)descriptor, descriptorMap->ComponentBase);
// Check descriptor version by getting hardcoded value of FlashParameters.ReadClockFrequency
UINT8 descriptorVersion = 0;
if (componentSection->FlashParameters.ReadClockFrequency == FLASH_FREQUENCY_20MHZ) // Old descriptor
if (descriptorMap->Version.RawValue != FLASH_DESCRIPTOR_VERSION_INVALID) // Kaby Lake+ descriptor
descriptorVersion = 3;
// Check descriptor version by getting hardcoded value of FlashParameters.ReadClockFrequency
else if (componentSection->FlashParameters.ReadClockFrequency == FLASH_FREQUENCY_20MHZ) // Old descriptor
descriptorVersion = 1;
else // Skylake+ descriptor
descriptorVersion = 2;