* [PATCH] IntelSiliconPkg/MicrocodeUpdate: Fix incorrect checksum issue
@ 2019-02-22 0:48 Chen A Chen
2019-02-22 9:47 ` Ni, Ray
0 siblings, 1 reply; 2+ messages in thread
From: Chen A Chen @ 2019-02-22 0:48 UTC (permalink / raw)
To: edk2-devel
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020
The same issue has fixed in UefiCpuPkg/Microcode.c file.
Please reference b6f67b4d58b81f12f63f5f8c94cf8af3600297ab
to get more detail information.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
---
.../Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c b/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
index 9b5757da71..e45c7a8def 100644
--- a/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
+++ b/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
@@ -390,6 +390,7 @@ VerifyMicrocode (
UINTN DataSize;
UINT32 CurrentRevision;
PROCESSOR_INFO *ProcessorInfo;
+ UINT32 InCompleteCheckSum32;
UINT32 CheckSum32;
UINTN ExtendedTableLength;
UINT32 ExtendedTableCount;
@@ -488,6 +489,10 @@ VerifyMicrocode (
}
return EFI_VOLUME_CORRUPTED;
}
+ InCompleteCheckSum32 = CheckSum32;
+ InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorSignature.Uint32;
+ InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags;
+ InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum;
//
// Check ProcessorSignature/ProcessorFlags
@@ -522,7 +527,10 @@ VerifyMicrocode (
} else {
ExtendedTable = (CPU_MICROCODE_EXTENDED_TABLE *)(ExtendedTableHeader + 1);
for (Index = 0; Index < ExtendedTableCount; Index++) {
- CheckSum32 = CalculateSum32((UINT32 *)ExtendedTable, sizeof(CPU_MICROCODE_EXTENDED_TABLE));
+ CheckSum32 = InCompleteCheckSum32;
+ CheckSum32 += ExtendedTable->ProcessorSignature.Uint32;
+ CheckSum32 += ExtendedTable->ProcessorFlag;
+ CheckSum32 += ExtendedTable->Checksum;
if (CheckSum32 != 0) {
DEBUG((DEBUG_ERROR, "VerifyMicrocode - The checksum for ExtendedTable entry with index 0x%x is incorrect\n", Index));
} else {
--
2.16.2.windows.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] IntelSiliconPkg/MicrocodeUpdate: Fix incorrect checksum issue
2019-02-22 0:48 [PATCH] IntelSiliconPkg/MicrocodeUpdate: Fix incorrect checksum issue Chen A Chen
@ 2019-02-22 9:47 ` Ni, Ray
0 siblings, 0 replies; 2+ messages in thread
From: Ni, Ray @ 2019-02-22 9:47 UTC (permalink / raw)
To: Chen, Chen A, edk2-devel@lists.01.org
Reviewed-by: Ray Ni <ray.ni@intel.com>
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Chen
> A Chen
> Sent: Friday, February 22, 2019 8:49 AM
> To: edk2-devel@lists.01.org
> Subject: [edk2] [PATCH] IntelSiliconPkg/MicrocodeUpdate: Fix incorrect
> checksum issue
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020
>
> The same issue has fixed in UefiCpuPkg/Microcode.c file.
> Please reference b6f67b4d58b81f12f63f5f8c94cf8af3600297ab
> to get more detail information.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
> Cc: Ray Ni <ray.ni@intel.com>
> Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
> ---
> .../Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c | 10
> +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git
> a/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
> b/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
> index 9b5757da71..e45c7a8def 100644
> ---
> a/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
> +++
> b/IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdate.c
> @@ -390,6 +390,7 @@ VerifyMicrocode (
> UINTN DataSize;
> UINT32 CurrentRevision;
> PROCESSOR_INFO *ProcessorInfo;
> + UINT32 InCompleteCheckSum32;
> UINT32 CheckSum32;
> UINTN ExtendedTableLength;
> UINT32 ExtendedTableCount;
> @@ -488,6 +489,10 @@ VerifyMicrocode (
> }
> return EFI_VOLUME_CORRUPTED;
> }
> + InCompleteCheckSum32 = CheckSum32;
> + InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorSignature.Uint32;
> + InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags;
> + InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum;
>
> //
> // Check ProcessorSignature/ProcessorFlags
> @@ -522,7 +527,10 @@ VerifyMicrocode (
> } else {
> ExtendedTable = (CPU_MICROCODE_EXTENDED_TABLE
> *)(ExtendedTableHeader + 1);
> for (Index = 0; Index < ExtendedTableCount; Index++) {
> - CheckSum32 = CalculateSum32((UINT32 *)ExtendedTable,
> sizeof(CPU_MICROCODE_EXTENDED_TABLE));
> + CheckSum32 = InCompleteCheckSum32;
> + CheckSum32 += ExtendedTable->ProcessorSignature.Uint32;
> + CheckSum32 += ExtendedTable->ProcessorFlag;
> + CheckSum32 += ExtendedTable->Checksum;
> if (CheckSum32 != 0) {
> DEBUG((DEBUG_ERROR, "VerifyMicrocode - The checksum for
> ExtendedTable entry with index 0x%x is incorrect\n", Index));
> } else {
> --
> 2.16.2.windows.1
>
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
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