diff options
Diffstat (limited to 'Core/EM/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c')
| -rw-r--r-- | Core/EM/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/Core/EM/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c b/Core/EM/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c new file mode 100644 index 0000000..4bf72a1 --- /dev/null +++ b/Core/EM/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c @@ -0,0 +1,386 @@ +//**********************************************************************// +//**********************************************************************// +//** **// +//** (C)Copyright 1985-2015, American Megatrends, Inc. **// +//** **// +//** All Rights Reserved. **// +//** **// +//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **// +//** **// +//** Phone: (770)-246-8600 **// +//** **// +//**********************************************************************// +//**********************************************************************// + +//**********************************************************************// +// $Header: /Alaska/SOURCE/Modules/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c 11 2/17/15 1:16p Davidd $ +// +// $Revision: 11 $ +// +// $Date: 2/17/15 1:16p $ +//**********************************************************************// +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/SMBIOS/SmbiosDMIEditSupport/SmbiosNvramFunc.c $ +// +// 11 2/17/15 1:16p Davidd +// [TAG] EIP205509 +// [Category] Improvement +// [Description] Merge Aptio V Smbios EIP193807, 193858, 196901 changes +// into Aptio 4 Smbios +// [Files] SmbiosDmiEdit.sdl +// SmbiosDmiEdit.c +// SmbiosNvramFunc.c +// SmbiosGetFlashData.c +// +// 10 11/15/13 4:34p Davidd +// [TAG] EIP143321 +// [Category] Improvement +// [Description] Perform "CppCheck" on Smbios module for +// '4.6.5.1_SMBIOS_36' release +// [Files] SmbiosBoard.c +// Smbios.c +// SmbiosDMIEdit.c +// SmbiosDMIEditFunc.c +// SmbiosNvramFunc.c +// +// 9 9/04/12 11:05a Davidd +// [TAG] EIP96286 +// [Category] Improvement +// [Description] Please help to reserve DMI Data for AFUDOS with /r in +// Capsule Mode +// [Files] Smbios.sdl +// SmbiosDMIEdit.mak +// SmbiosNvramFunc.c +// +// 8 8/02/12 12:48p Davidd +// [TAG] EIP96064 +// [Category] Bug Fix +// [Severity] Minor +// [Symptom] SMBIOS: DmiEdit support creates NVRAM variables with names +// of incorrect length +// [RootCause] Swprintf_s function creates 15 characters variable name +// with NULL terminator in last byte. +// [Solution] Use Swprintf function instead +// [Files] Smbios.c +// SmbiosDMIEditFunc.c +// SmbiosNvramFunc.c +// +// 7 11/17/11 2:41p Davidd +// [TAG] EIP74579 +// [Category] Improvement +// [Description] Update SMBIOS moudule to let AMDELNX support SMBIOS +// spec 2.7 +// (remove the 64 characters string limitation) +// [Files] Smbios.h +// SmbiosStaticData.sdl +// Smbios.c +// SMBios.dxs +// SmbiosDMIEdit.sdl +// SmbiosDMIEdit.h +// SmbiosDMIEditFunc.c +// SmbiosNvram.c +// SmbiosFlashData.sdl +// +// 6 5/04/11 3:20p Davidd +// [TAG] EIP57144 +// [Category] NEW FEATURE +// [Description] Allow SMBIOS Type 39 to be modified using DMIEdit +// [Files] SmbiosBoard.c +// Smbios.h +// SmbiosDynamicData.h +// Smbios.c +// SmbiosDmieditFunc.c +// SmbiosNvramFunc.c +// +// 5 3/02/11 11:47a Davidd +// [TAG] EIP54264 +// [Category] Bug Fix +// [Severity] Normal +// [Symptom] Data is assumed valid without checking after some +// GetVariable calls +// [RootCause] No error checking +// [Solution] Problem has been fixed with code changes +// [Files] SmbiosNvramFunc.c +// SmbiosDMIEditFunc.c +// +// 4 1/14/11 3:57p Davidd +// [TAG] EIP50564 +// [Category] Bug Fix +// [Severity] Normal +// [Symptom] BIOS can't keep DMI data after flash BIOS with /p /b /n /r +// parameters +// [RootCause] Side effect of previous changes (NVRAM variable name +// format +// has been changed) +// [Solution] Problem has been fixed with code changes +// [Files] SmbiosNvramFunc.c +// +// 3 10/21/10 11:36a Davidd +// [TAG] EIP46394 +// [Category] BUG FIX +// [Severity] Important +// [Symptom] Incorrect variable size for GetVariable() usage in +// Smbios module +// [RootCause] GetVariable is called with incorrect "DataSize" type. +// [Solution] Corrected "DataSize" type in all GetVariable calls. +// [Files] +// Smbios.c +// SmbiosDMIEditFunc.c +// SmbiosNvramFunc.c +// +// 2 12/04/09 3:28p Davidd +// Corrected the DMIEdit data not updated after being updated 5-6 times +// (when NVRAM is used to store DMIEdit data) - EIP 30837. +// +// 1 2/02/09 4:21p Davidd +// Initial checkin +// +//**********************************************************************// + +#include <AmiDxeLib.h> +#include <Token.h> +#include "Protocol\Smbios.h" +#include "SmbiosDMIEdit.h" + +#if SMBIOS_DMIEDIT_DATA_LOC == 2 +static BOOLEAN DmiEditVarPresent = FALSE; +EFI_GUID gEfiSmbiosNvramGuid = EFI_SMBIOS_NVRAM_DATA_GUID; +CHAR16 *DmiArrayVar = L"DmiArray"; +DMI_VAR DmiArray[DMI_ARRAY_COUNT] = {0}; +UINTN DmiArraySize = DMI_ARRAY_COUNT * sizeof(DMI_VAR); +CHAR16 *S1 = L" "; +UINT8 DmiData[0x1000]; +UINT8 *DmiDataPtr; +UINT8 Buffer[0x400]; +UINTN BufferSize; +UINTN DmiDataLength[DMI_ARRAY_COUNT]; +UINT8 gRecoveryKeepDMIFlag = FALSE; + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: PreserveDmiEditData +// +// Description: Preserve the DMIEdit data by loading its data into memory +// prior to flashing +// +// Input: None +// +// Output: None +// +// Modified: +// +// Referrals: +// +// Notes: +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID +PreserveDmiEditData (VOID) +{ + EFI_STATUS Status; + UINT8 Count; + UINT8 Index; + + // + // Get number of DMI data records in NVRAM + // + // Note: DMI data record actually starts with record #1, + // first record #0 holds total number of DMI data records + // instead of TABLE_INFO + // ===> DmiArray[0].Type = count + // + Status = pRS->GetVariable( + DmiArrayVar, + &gEfiSmbiosNvramGuid, + NULL, + &DmiArraySize, + &DmiArray[0]); + + if (Status == EFI_SUCCESS) { + DmiDataPtr = DmiData; + + Count = DmiArray[0].Type; // Note: DmiArray[0] has count # + + // Get DMI data into memory. The data will be saved back into + // NVRAM later in RestoreDmiEditData + for (Index = 0; Index < Count; Index++) { + Swprintf(S1, L"DmiVar%02x%04x%02x%02x", + DmiArray[Index + 1].Type, + DmiArray[Index + 1].Handle, + DmiArray[Index + 1].Offset, + DmiArray[Index + 1].Flags); + + BufferSize = sizeof(Buffer); + Status = pRS->GetVariable( + S1, + &gEfiSmbiosNvramGuid, + NULL, + &BufferSize, + &Buffer); + + if (Status == EFI_SUCCESS) { + MemCpy(DmiDataPtr, Buffer, BufferSize); + DmiDataLength[Index] = BufferSize; + DmiDataPtr += BufferSize; + } + else { + DmiDataLength[Index] = 0; + } + } + + DmiEditVarPresent = TRUE; + } +} + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: RestoreDmiEditData +// +// Description: Restore the DMIEdit data in NVRAM with data previously loaded +// in memory by PreserveDmiEditData. +// +// Input: None +// +// Output: None +// +// Modified: +// +// Referrals: +// +// Notes: +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID +RestoreDmiEditData (VOID) +{ + UINT8 Count; + UINT8 Index; + + // DMI data were read and saved in memory in PreserveDmiEditData. + // Now save DMI data back into NVRAM if present + if (DmiEditVarPresent) { + pRS->SetVariable( + DmiArrayVar, + &gEfiSmbiosNvramGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE, + DmiArraySize, + &DmiArray[0]); + + DmiDataPtr = DmiData; + + Count = DmiArray[0].Type; // Note: DmiArray[0] has count # instead of Type/Offset + + for (Index = 0; Index < Count; Index++) { + Swprintf(S1, L"DmiVar%02x%04x%02x%02x", + DmiArray[Index + 1].Type, + DmiArray[Index + 1].Handle, + DmiArray[Index + 1].Offset, + DmiArray[Index + 1].Flags); + + pRS->SetVariable( + S1, + &gEfiSmbiosNvramGuid, + EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE, + DmiDataLength[Index], + DmiDataPtr); + + DmiDataPtr += DmiDataLength[Index]; + } + } +} + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: RecoveryPreserveDmiEditData +// +// Description: Preserve the DMIEdit data by loading its data into memory +// prior to flashing (for capsule mode) +// +// Input: None +// +// Output: None +// +// Modified: +// +// Referrals: +// +// Notes: +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID +RecoveryPreserveDmiEditData (VOID) +{ + EFI_STATUS Status; + EFI_GUID gEfiSmbiosNvramGuid = {0x4b3082a3, 0x80c6, 0x4d7e, { 0x9c, 0xd0, 0x58, 0x39, 0x17, 0x26, 0x5d, 0xf1 }}; + CHAR16 *PreserveSmbiosNvramVar = L"PreserveSmbiosNvramVar"; + UINTN Size = sizeof (UINT8); + UINT32 PreserveSmbiosNvram; + + gRecoveryKeepDMIFlag = FALSE; + + Status = pRS->GetVariable ( + PreserveSmbiosNvramVar, + &gEfiSmbiosNvramGuid, + NULL, + &Size, + &PreserveSmbiosNvram + ); + + if (!EFI_ERROR (Status)) { + gRecoveryKeepDMIFlag = TRUE; + PreserveDmiEditData (); + } + + Status = pRS->SetVariable ( + PreserveSmbiosNvramVar, + &gEfiSmbiosNvramGuid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_NON_VOLATILE, + 0, + NULL + ); + ASSERT_EFI_ERROR(Status); +} + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: RecoveryRestoreDmiEditData +// +// Description: Restore the DMIEdit data in NVRAM with data previously loaded +// in memory by PreserveDmiEditData (for capsule mode) +// +// Input: None +// +// Output: None +// +// Modified: +// +// Referrals: +// +// Notes: +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID +RecoveryRestoreDmiEditData (VOID) +{ + if (gRecoveryKeepDMIFlag) { + RestoreDmiEditData (); + } + + gRecoveryKeepDMIFlag = FALSE; +} +#endif + +//**********************************************************************// +//**********************************************************************// +//** **// +//** (C)Copyright 1985-2015, American Megatrends, Inc. **// +//** **// +//** All Rights Reserved. **// +//** **// +//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **// +//** **// +//** Phone: (770)-246-8600 **// +//** **// +//**********************************************************************// +//**********************************************************************// |