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//**********************************************************************//
//**********************************************************************//
//** **//
//** (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 **//
//** **//
//**********************************************************************//
//**********************************************************************//
|
