diff options
Diffstat (limited to 'Vlv2TbltDevicePkg/PlatformInfoDxe/PlatformInfoDxe.c')
| -rw-r--r-- | Vlv2TbltDevicePkg/PlatformInfoDxe/PlatformInfoDxe.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/Vlv2TbltDevicePkg/PlatformInfoDxe/PlatformInfoDxe.c b/Vlv2TbltDevicePkg/PlatformInfoDxe/PlatformInfoDxe.c new file mode 100644 index 0000000000..6bf276246e --- /dev/null +++ b/Vlv2TbltDevicePkg/PlatformInfoDxe/PlatformInfoDxe.c @@ -0,0 +1,161 @@ +/** @file
+
+ Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available under
+ the terms and conditions of the BSD License that accompanies this distribution.
+ The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+Module Name:
+
+ PlatformInfoDxe.c
+
+Abstract:
+ Platform Info driver to public platform related HOB data
+
+--*/
+
+#include "PlatformInfoDxe.h"
+
+/**
+ Entry point for the driver.
+
+ This routine get the platform HOB data from PEI and publish
+ as Platform Info variable that can be accessed during boot service and
+ runtime.
+
+ @param ImageHandle Image Handle.
+ @param SystemTable EFI System Table.
+
+ @retval Status Function execution status.
+
+**/
+EFI_STATUS
+EFIAPI
+PlatformInfoInit (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_PLATFORM_INFO_HOB *PlatformInfoHobPtr;
+ EFI_PEI_HOB_POINTERS GuidHob;
+ EFI_PLATFORM_INFO_HOB TmpHob;
+ UINTN VarSize;
+ EFI_OS_SELECTION_HOB *OsSlectionHobPtr;
+ UINT8 Selection;
+ SYSTEM_CONFIGURATION SystemConfiguration;
+ UINT8 *LpssDataHobPtr;
+ UINT8 *LpssDataVarPtr;
+ UINTN i;
+
+ VarSize = sizeof(SYSTEM_CONFIGURATION);
+ Status = gRT->GetVariable(
+ NORMAL_SETUP_NAME,
+ &gEfiNormalSetupGuid,
+ NULL,
+ &VarSize,
+ &SystemConfiguration
+ );
+
+ VarSize = sizeof(Selection);
+ Status = gRT->GetVariable(
+ L"OsSelection",
+ &gOsSelectionVariableGuid,
+ NULL,
+ &VarSize,
+ &Selection
+ );
+
+ if (EFI_ERROR(Status)) {
+ Selection = SystemConfiguration.ReservedO;
+ Status = gRT->SetVariable (
+ L"OsSelection",
+ &gOsSelectionVariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ sizeof(Selection),
+ &Selection
+ );
+ }
+
+ GuidHob.Raw = GetHobList ();
+ if (GuidHob.Raw != NULL) {
+ if ((GuidHob.Raw = GetNextGuidHob (&gOsSelectionVariableGuid, GuidHob.Raw)) != NULL) {
+ OsSlectionHobPtr = GET_GUID_HOB_DATA (GuidHob.Guid);
+
+ if (OsSlectionHobPtr->OsSelectionChanged) {
+ SystemConfiguration.ReservedO = OsSlectionHobPtr->OsSelection;
+
+ //
+ // Load Audio default configuration
+ //
+ SystemConfiguration.Lpe = OsSlectionHobPtr->Lpe;
+ SystemConfiguration.PchAzalia = OsSlectionHobPtr->PchAzalia;
+
+ //
+ // Load LPSS and SCC default configurations
+ //
+ LpssDataHobPtr = &OsSlectionHobPtr->LpssData.LpssPciModeEnabled;
+ LpssDataVarPtr = &SystemConfiguration.LpssPciModeEnabled;
+ for (i = 0; i < sizeof(EFI_PLATFORM_LPSS_DATA); i++) {
+ *LpssDataVarPtr = *LpssDataHobPtr;
+ LpssDataVarPtr++;
+ LpssDataHobPtr++;
+ }
+
+ SystemConfiguration.GOPEnable = TRUE;
+
+ Status = gRT->SetVariable (
+ NORMAL_SETUP_NAME,
+ &gEfiNormalSetupGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ sizeof(SYSTEM_CONFIGURATION),
+ &SystemConfiguration
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+ }
+ }
+
+ GuidHob.Raw = GetHobList ();
+ if (GuidHob.Raw == NULL) {
+ return EFI_NOT_FOUND;
+ }
+
+ if ((GuidHob.Raw = GetNextGuidHob (&gEfiPlatformInfoGuid, GuidHob.Raw)) != NULL) {
+ PlatformInfoHobPtr = GET_GUID_HOB_DATA (GuidHob.Guid);
+ VarSize = sizeof(EFI_PLATFORM_INFO_HOB);
+ Status = gRT->GetVariable(
+ L"PlatformInfo",
+ &gEfiVlv2VariableGuid,
+ NULL,
+ &VarSize,
+ &TmpHob
+ );
+
+ if (EFI_ERROR(Status) || CompareMem (&TmpHob, PlatformInfoHobPtr, VarSize)) {
+
+ //
+ // Write the Platform Info to volatile memory
+ //
+ Status = gRT->SetVariable(
+ L"PlatformInfo",
+ &gEfiVlv2VariableGuid,
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
+ sizeof(EFI_PLATFORM_INFO_HOB),
+ PlatformInfoHobPtr
+ );
+ if (EFI_ERROR(Status)) {
+ return Status;
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
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