diff options
Diffstat (limited to 'Core/EM/CsmOptOut/CsmOptOutRuntime.c')
| -rw-r--r-- | Core/EM/CsmOptOut/CsmOptOutRuntime.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/Core/EM/CsmOptOut/CsmOptOutRuntime.c b/Core/EM/CsmOptOut/CsmOptOutRuntime.c new file mode 100644 index 0000000..389676f --- /dev/null +++ b/Core/EM/CsmOptOut/CsmOptOutRuntime.c @@ -0,0 +1,168 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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/CsmOptOut/CsmOptOutRuntime.c 4 8/29/12 2:25p Artems $ +// +// $Revision: 4 $ +// +// $Date: 8/29/12 2:25p $ +//********************************************************************** +// Revision History +// ---------------- +// $Log: /Alaska/SOURCE/Modules/CsmOptOut/CsmOptOutRuntime.c $ +// +// 4 8/29/12 2:25p Artems +// [TAG] EIP98995 +// [Category] Improvement +// [Description] When enable secure boot disable CSM but preserve CSM +// optout options setting, +// so once secure boot is disabled they can be restored +// [Files] CsmOptOut.sd, CsmOptOut.sdl, CsmOptOutSetup.c +// CsmOptOutRuntime.c +// +// 3 6/20/12 6:10p Artems +// [TAG] EIP83692 +// [Category] Improvement +// [Description] CSM OptOut setup page grayed out if secure boot is +// enabled +// CSM OptOut PlatformOverride protocol modified to fix SCT bugs +// Removed support for Launch CSM "Auto" option +// +// [Files] CsmOptOut.c CsmOptOut.mak CsmOptOut.sd CsmOptOut.sdl +// CsmOptOut.uni CsmOptOutRuntime.c CsmOptOutSetup.c +// +// 2 3/23/12 6:26p Artems +// EIP 84012: Added fix to execute entrypoint only once +// +// 1 3/16/12 4:57p Artems +// Initial check-in +// +//********************************************************************** +//<AMI_FHDR_START> +// +// Name: CsmOptOutRuntime.c +// +// Description: This is the entry point of CsmOptOut driver +// +//<AMI_FHDR_END> +//********************************************************************** + + +//---------------------------------------------------------------------------- + +#include <Token.h> +#include <AmiDxeLib.h> +#include <Setup.h> +#include <AmiLoadCsmPolicy.h> +#include <ImageAuthentication.h> + +//---------------------------------------------------------------------------- + +static EFI_GUID SetupGuid = SETUP_GUID; +static EFI_GUID AmiLoadCsmGuid = AMI_LOAD_CSM_GUID; +static EFI_GUID gEfiGlobalVariableGuid = EFI_GLOBAL_VARIABLE; + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: CsmOptOutNotInSmmEntry +// +// Description: CsmOptOut runtime callback for variable services +// +// Input: +// IN EFI_EVENT Event - Callback event +// IN VOID *Context - pointer to calling context +// +// Output: None +// +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +EFI_STATUS CsmOptOutNotInSmmEntry( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable +) +{ + EFI_STATUS Status; + EFI_HANDLE Handle = NULL; + SETUP_DATA SetupData; + UINTN Size; + UINT8 CurrentCsmState; + UINT32 Attributes; + BOOLEAN SecureBoot; + + Size = sizeof(UINT8); + Status = pRS->GetVariable(EFI_SECURE_BOOT_NAME, &gEfiGlobalVariableGuid, NULL, &Size, &CurrentCsmState); + SecureBoot = (!EFI_ERROR(Status) && CurrentCsmState != 0) ? TRUE : FALSE; + + Size = sizeof(SETUP_DATA); + Status = pRS->GetVariable(L"Setup", &SetupGuid, &Attributes, &Size, &SetupData); + + CurrentCsmState = (SecureBoot) ? 0 : (EFI_ERROR(Status)) ? DEFAULT_CSM_LAUNCH_POLICY : SetupData.CsmLaunchPolicy; + if(CurrentCsmState == 1) { + Status = pBS->InstallMultipleProtocolInterfaces(&Handle, + &AmiLoadCsmGuid, NULL, + NULL); + ASSERT_EFI_ERROR(Status); + } + return Status; +} + +//<AMI_PHDR_START> +//---------------------------------------------------------------------------- +// Procedure: CsmOptOutRuntimeEntry +// +// Description: CsmOptOut runtime callback for variable services +// +// Input: +// IN EFI_EVENT Event - Callback event +// IN VOID *Context - pointer to calling context +// +// Output: None +// +//---------------------------------------------------------------------------- +//<AMI_PHDR_END> +EFI_STATUS CsmOptOutRuntimeEntry( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable +) +{ + EFI_STATUS Status; + UINT32 Var; + UINTN Size = sizeof(UINT32); + + InitAmiLib(ImageHandle, SystemTable); + + Status = pRS->GetVariable(L"AmiLoadCsm", &AmiLoadCsmGuid, NULL, &Size, &Var); + if(!EFI_ERROR(Status)) + return EFI_ALREADY_STARTED; + + Size = sizeof(UINT32); + Var = 0xdeadbeef; + Status = pRS->SetVariable(L"AmiLoadCsm", &AmiLoadCsmGuid, EFI_VARIABLE_BOOTSERVICE_ACCESS, Size, &Var); + return CsmOptOutNotInSmmEntry(ImageHandle, SystemTable); +} + +//********************************************************************** +//********************************************************************** +//** ** +//** (C)Copyright 1985-2011, American Megatrends, Inc. ** +//** ** +//** All Rights Reserved. ** +//** ** +//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 ** +//** ** +//** Phone: (770)-246-8600 ** +//** ** +//********************************************************************** +//********************************************************************** |