diff options
Diffstat (limited to 'EdkNt32Pkg/Pei/FlashMap/FlashMap.c')
| -rw-r--r-- | EdkNt32Pkg/Pei/FlashMap/FlashMap.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/EdkNt32Pkg/Pei/FlashMap/FlashMap.c b/EdkNt32Pkg/Pei/FlashMap/FlashMap.c new file mode 100644 index 0000000000..a8f7ba06ad --- /dev/null +++ b/EdkNt32Pkg/Pei/FlashMap/FlashMap.c @@ -0,0 +1,273 @@ +/*++
+
+Copyright (c) 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which 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:
+
+ FlashMap.c
+
+Abstract:
+
+ PEIM to build GUIDed HOBs for platform specific flash map
+
+--*/
+
+
+#include <FlashLayout.h>
+
+EFI_STATUS
+EFIAPI
+GetAreaInfo (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN PEI_FLASH_MAP_PPI *This,
+ IN EFI_FLASH_AREA_TYPE AreaType,
+ IN EFI_GUID *AreaTypeGuid,
+ OUT UINT32 *NumEntries,
+ OUT EFI_FLASH_SUBAREA_ENTRY **Entries
+ );
+
+EFI_STATUS
+EFIAPI
+MemoryDiscoveredPpiNotifyCallback (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
+ IN VOID *Ppi
+ );
+
+//
+// Module globals
+//
+static PEI_FLASH_MAP_PPI mFlashMapPpi = { GetAreaInfo };
+
+static EFI_PEI_PPI_DESCRIPTOR mPpiListFlashMap = {
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+ &gPeiFlashMapPpiGuid,
+ &mFlashMapPpi
+};
+
+static EFI_FLASH_AREA_DATA mFlashAreaData[] = {
+ //
+ // Variable area
+ //
+ {
+ EFI_VARIABLE_STORE_OFFSET,
+ EFI_VARIABLE_STORE_LENGTH,
+ EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV,
+ EFI_FLASH_AREA_EFI_VARIABLES
+ },
+ //
+ // FTW spare (backup) block
+ //
+ {
+ EFI_WINNT_FTW_SPARE_BLOCK_OFFSET,
+ EFI_WINNT_FTW_SPARE_BLOCK_LENGTH,
+ EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV,
+ EFI_FLASH_AREA_FTW_BACKUP
+ },
+ //
+ // FTW private working (state) area
+ //
+ {
+ EFI_FTW_WORKING_OFFSET,
+ EFI_FTW_WORKING_LENGTH,
+ EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV,
+ EFI_FLASH_AREA_FTW_STATE
+ },
+ //
+ // Recovery FV
+ //
+ {
+ EFI_WINNT_FIRMWARE_OFFSET,
+ EFI_WINNT_FIRMWARE_LENGTH,
+ EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV,
+ EFI_FLASH_AREA_RECOVERY_BIOS
+ },
+ //
+ // System Non-Volatile Storage FV
+ //
+ {
+ EFI_WINNT_RUNTIME_UPDATABLE_OFFSET,
+ EFI_WINNT_RUNTIME_UPDATABLE_LENGTH + EFI_WINNT_FTW_SPARE_BLOCK_LENGTH,
+ EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV,
+ EFI_FLASH_AREA_GUID_DEFINED
+ },
+};
+
+
+EFI_STATUS
+EFIAPI
+PeimInitializeFlashMap (
+ IN EFI_FFS_FILE_HEADER *FfsHeader,
+ IN EFI_PEI_SERVICES **PeiServices
+ )
+/*++
+
+Routine Description:
+ Build GUIDed HOBs for platform specific flash map
+
+Arguments:
+ FfsHeader - A pointer to the EFI_FFS_FILE_HEADER structure.
+ PeiServices - General purpose services available to every PEIM.
+
+Returns:
+ EFI_STATUS
+
+--*/
+// TODO: EFI_SUCCESS - add return value to function comment
+{
+ EFI_STATUS Status;
+ NT_FWH_PPI *NtFwhPpi;
+ EFI_PEI_PPI_DESCRIPTOR *PpiDescriptor;
+ EFI_PHYSICAL_ADDRESS FdBase;
+ UINT64 FdSize;
+ UINTN NumOfHobData;
+ UINTN Index;
+ EFI_FLASH_AREA_HOB_DATA FlashHobData;
+
+ DEBUG ((EFI_D_ERROR, "NT 32 Flash Map PEIM Loaded\n"));
+
+ //
+ // Install FlashMap PPI
+ //
+ Status = PeiCoreInstallPpi (&mPpiListFlashMap);
+ ASSERT_EFI_ERROR (Status);
+
+
+ //
+ // Get the Fwh Information PPI
+ //
+ Status = PeiCoreLocatePpi (
+ &gNtFwhPpiGuid, // GUID
+ 0, // INSTANCE
+ &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
+ &NtFwhPpi // PPI
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Assume that FD0 contains the Flash map.
+ //
+ Status = NtFwhPpi->NtFwh (0, &FdBase, &FdSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Get number of types
+ //
+ NumOfHobData = sizeof (mFlashAreaData) / sizeof (EFI_FLASH_AREA_DATA);
+
+ //
+ // Build flash area entries as GUIDed HOBs.
+ //
+ for (Index = 0; Index < NumOfHobData; Index++) {
+ (*PeiServices)->SetMem (&FlashHobData, sizeof (EFI_FLASH_AREA_HOB_DATA), 0);
+
+ FlashHobData.AreaType = mFlashAreaData[Index].AreaType;
+ FlashHobData.NumberOfEntries = 1;
+ FlashHobData.SubAreaData.Attributes = mFlashAreaData[Index].Attributes;
+ FlashHobData.SubAreaData.Base = FdBase + (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Base;
+ FlashHobData.SubAreaData.Length = (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Length;
+
+ switch (FlashHobData.AreaType) {
+ case EFI_FLASH_AREA_RECOVERY_BIOS:
+ case EFI_FLASH_AREA_MAIN_BIOS:
+ (*PeiServices)->CopyMem (
+ &FlashHobData.AreaTypeGuid,
+ &gEfiFirmwareFileSystemGuid,
+ sizeof (EFI_GUID)
+ );
+ (*PeiServices)->CopyMem (
+ &FlashHobData.SubAreaData.FileSystem,
+ &gEfiFirmwareVolumeBlockProtocolGuid,
+ sizeof (EFI_GUID)
+ );
+ break;
+
+ case EFI_FLASH_AREA_GUID_DEFINED:
+ (*PeiServices)->CopyMem (
+ &FlashHobData.AreaTypeGuid,
+ &gEfiSystemNvDataHobGuid,
+ sizeof (EFI_GUID)
+ );
+ (*PeiServices)->CopyMem (
+ &FlashHobData.SubAreaData.FileSystem,
+ &gEfiFirmwareVolumeBlockProtocolGuid,
+ sizeof (EFI_GUID)
+ );
+ break;
+
+ default:
+ break;
+ }
+
+ BuildGuidDataHob (
+ &gEfiFlashMapHobGuid,
+ &FlashHobData,
+ sizeof (EFI_FLASH_AREA_HOB_DATA)
+ );
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+GetAreaInfo (
+ IN EFI_PEI_SERVICES **PeiServices,
+ IN PEI_FLASH_MAP_PPI *This,
+ IN EFI_FLASH_AREA_TYPE AreaType,
+ IN EFI_GUID *AreaTypeGuid,
+ OUT UINT32 *NumEntries,
+ OUT EFI_FLASH_SUBAREA_ENTRY **Entries
+ )
+/*++
+
+ Routine Description:
+ Implementation of Flash Map PPI
+
+--*/
+// TODO: function comment is missing 'Arguments:'
+// TODO: function comment is missing 'Returns:'
+// TODO: PeiServices - add argument and description to function comment
+// TODO: This - add argument and description to function comment
+// TODO: AreaType - add argument and description to function comment
+// TODO: AreaTypeGuid - add argument and description to function comment
+// TODO: NumEntries - add argument and description to function comment
+// TODO: Entries - add argument and description to function comment
+// TODO: EFI_SUCCESS - add return value to function comment
+// TODO: EFI_NOT_FOUND - add return value to function comment
+{
+ EFI_STATUS Status;
+ EFI_PEI_HOB_POINTERS Hob;
+ EFI_HOB_FLASH_MAP_ENTRY_TYPE *FlashMapEntry;
+
+ Status = PeiCoreGetHobList (&Hob.Raw);
+ while (!END_OF_HOB_LIST (Hob)) {
+ if (Hob.Header->HobType == EFI_HOB_TYPE_GUID_EXTENSION && CompareGuid (&Hob.Guid->Name, &gEfiFlashMapHobGuid)) {
+ FlashMapEntry = (EFI_HOB_FLASH_MAP_ENTRY_TYPE *) Hob.Raw;
+ if (AreaType == FlashMapEntry->AreaType) {
+ if (AreaType == EFI_FLASH_AREA_GUID_DEFINED) {
+ if (!CompareGuid (AreaTypeGuid, &FlashMapEntry->AreaTypeGuid)) {
+ continue;
+ }
+ }
+
+ *NumEntries = FlashMapEntry->NumEntries;
+ *Entries = FlashMapEntry->Entries;
+ return EFI_SUCCESS;
+ }
+ }
+
+ Hob.Raw = GET_NEXT_HOB (Hob);
+ }
+
+ return EFI_NOT_FOUND;
+}
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