diff options
Diffstat (limited to 'Core/EM/PeiRamBoot/PeiRamBootOfbd.c')
| -rw-r--r-- | Core/EM/PeiRamBoot/PeiRamBootOfbd.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/Core/EM/PeiRamBoot/PeiRamBootOfbd.c b/Core/EM/PeiRamBoot/PeiRamBootOfbd.c new file mode 100644 index 0000000..8d324d8 --- /dev/null +++ b/Core/EM/PeiRamBoot/PeiRamBootOfbd.c @@ -0,0 +1,185 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2011, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* + +//********************************************************************** +// $Header: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootOfbd.c 3 6/18/14 11:57p Calvinchen $ +// +// $Revision: 3 $ +// +// $Date: 6/18/14 11:57p $ +//********************************************************************** +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootOfbd.c $ +// +// 3 6/18/14 11:57p Calvinchen +// Bug Fixed: System hangs with using AFU. +// +// 2 5/05/14 5:03a Calvinchen +// [TAG] EIP166551 +// [Category] Spec Update +// [Severity] Important +// [Description] Runtime attribute set for the some of the variable used +// by PEI Ram Boot driver and needs to be reviewed +// [Files] PeiRamBootDxe.c +// PeiRamBootOfbd.c +// PeiRamBoot.chm +// PeiRamBoot.cif +// +// 1 2/11/11 3:15a Calvinchen +// Bug Fixed : System hangs after reflashed BIOS with warm reset if +// PEI_RAM_BOOT_S3_SUPPORT = 1 with fast warm boot support. +// +// +//********************************************************************** +//<AMI_FHDR_START> +// +// Name: PeiRamBootOfbd.c +// +// Description: If system updated BIOS with warm reset, PeiRamBoot module +// will not copy rom to ram in sequence boot, and, it could +// cause system crashed. For avoiding this situation, BIOS +// delete the PEI RAM Boot related variables if system executed +// AFU. +// +//<AMI_FHDR_END> +//********************************************************************** +//---------------------------------------------------------------------------- +// Includes +// Statements that include other files +#include <AmiLib.h> +#include <AmiDxeLib.h> +#include <Setup.h> +#include <HOB.h> +#include "PeiRamBoot.h" +#include "OFBD.h" +//---------------------------------------------------------------------------- +// Function Externs + +//---------------------------------------------------------------------------- +// Local prototypes +typedef EFI_STATUS (*SHOW_BOOT_TIME_VARIABLES)(BOOLEAN Show); +typedef struct{ + SHOW_BOOT_TIME_VARIABLES ShowBootTimeVariables; +} AMI_NVRAM_CONTROL_PROTOCOL; +static AMI_NVRAM_CONTROL_PROTOCOL *gpNvramControl = NULL; + +//---------------------------------------------------------------------------- +// Local Variables + +//---------------------------------------------------------------------------- +// Function Definitions +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: PeiRamBootOfbdEntry +// +// Description: +// +// Input: +// IN VOID *Buffer +// IN OUT UINT8 *pOFBDDataHandled +// Output: +// VOID +// +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID PeiRamBootOfbdEntry ( + IN VOID *Buffer, + IN OUT UINT8 *pOFBDDataHandled ) +{ + EFI_GUID RomImageAddressGuid = ROM_IMAGE_ADDRESS_GUID; + EFI_STATUS Status; + EFI_PHYSICAL_ADDRESS HobRomImageAddress; + UINTN VariableSize; + static BOOLEAN blIsProcessed = FALSE; + + if (blIsProcessed == FALSE) blIsProcessed = TRUE; + else return; + + // Temporarily enable Nvram Variable Boot Time Access permission. + if (gpNvramControl) gpNvramControl->ShowBootTimeVariables(TRUE); + + VariableSize = sizeof(EFI_PHYSICAL_ADDRESS); + Status = pRS->GetVariable ( L"HobRomImage", \ + &RomImageAddressGuid, \ + NULL, \ + &VariableSize, \ + &HobRomImageAddress ); + if (!EFI_ERROR(Status)) { + // Delete HobRomImage Variable if system is executing AFU for forcing BIOS + // copy rom to image in sequence boot. + VariableSize = 0; + Status = pRS->SetVariable ( L"HobRomImage", \ + &RomImageAddressGuid, \ + EFI_VARIABLE_NON_VOLATILE | \ + EFI_VARIABLE_BOOTSERVICE_ACCESS, + VariableSize, \ + &HobRomImageAddress ); + } + // Disable Nvram Variable Boot Time Access permission. + if (gpNvramControl) gpNvramControl->ShowBootTimeVariables(FALSE); + return; +} + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: PeiRamBootOfbdInSmm +// +// Description: +// +// Input: +// VOID +// +// Output: +// VOID +// +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +VOID PeiRamBootOfbdInSmm (VOID) +{ + EFI_STATUS Status; + EFI_SMM_BASE2_PROTOCOL *pSmmBase2; + EFI_SMM_SYSTEM_TABLE2 *mSmst; + UINTN i; + EFI_CONFIGURATION_TABLE *Table; + static EFI_GUID gAmiNvramControlProtocolGuid = \ + { 0xf7ca7568, 0x5a09, 0x4d2c, { 0x8a, 0x9b, 0x75, 0x84, 0x68, 0x59, 0x2a, 0xe2 } }; + + Status = pBS->LocateProtocol(&gEfiSmmBase2ProtocolGuid, NULL, &pSmmBase2); + if (EFI_ERROR(Status)) return ; + + Status = pSmmBase2->GetSmstLocation (pSmmBase2, &mSmst); + if (EFI_ERROR(Status)) return ; + + Table = mSmst->SmmConfigurationTable; + for (i = mSmst->NumberOfTableEntries; i; --i, ++Table) { + if (guidcmp(&Table->VendorGuid, &gAmiNvramControlProtocolGuid)) continue; + gpNvramControl = (AMI_NVRAM_CONTROL_PROTOCOL*)Table->VendorTable; + break; + } + return; +} +//************************************************************************* +//************************************************************************* +//** ** +//** (C)Copyright 1985-2011, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//************************************************************************* +//************************************************************************* |