/*++ @file NorFlashFvbDxe.c\r
\r
- Copyright (c) 2011-201333, ARM Ltd. All rights reserved.<BR>\r
+ Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>\r
\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
#include <Library/UefiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
+#include <Library/DxeServicesTableLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
#include <Guid/VariableFormat.h>\r
\r
#include "NorFlashDxe.h"\r
\r
+STATIC EFI_EVENT mFvbVirtualAddrChangeEvent;\r
+STATIC UINTN mFlashNvStorageVariableBase;\r
\r
///\r
/// The Firmware Volume Block Protocol is the low-level interface\r
EFI_FIRMWARE_VOLUME_HEADER *FirmwareVolumeHeader;\r
VARIABLE_STORE_HEADER *VariableStoreHeader;\r
\r
- if (!Instance->Initialized && Instance->Initialize) {\r
- Instance->Initialize (Instance);\r
- }\r
-\r
HeadersLength = sizeof(EFI_FIRMWARE_VOLUME_HEADER) + sizeof(EFI_FV_BLOCK_MAP_ENTRY) + sizeof(VARIABLE_STORE_HEADER);\r
Headers = AllocateZeroPool(HeadersLength);\r
\r
// VARIABLE_STORE_HEADER\r
//\r
VariableStoreHeader = (VARIABLE_STORE_HEADER*)((UINTN)Headers + FirmwareVolumeHeader->HeaderLength);\r
- CopyGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid);\r
+ CopyGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid);\r
VariableStoreHeader->Size = PcdGet32(PcdFlashNvStorageVariableSize) - FirmwareVolumeHeader->HeaderLength;\r
VariableStoreHeader->Format = VARIABLE_STORE_FORMATTED;\r
VariableStoreHeader->State = VARIABLE_STORE_HEALTHY;\r
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
VARIABLE_STORE_HEADER *VariableStoreHeader;\r
UINTN VariableStoreLength;\r
- UINTN FvLength;\r
+ UINTN FvLength;\r
\r
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER*)Instance->RegionBaseAddress;\r
\r
|| (FwVolHeader->FvLength != FvLength)\r
)\r
{\r
- DEBUG ((EFI_D_ERROR, "ValidateFvHeader: No Firmware Volume header present\n"));\r
+ DEBUG ((EFI_D_INFO, "%a: No Firmware Volume header present\n",\r
+ __FUNCTION__));\r
return EFI_NOT_FOUND;\r
}\r
\r
// Check the Firmware Volume Guid\r
if( CompareGuid (&FwVolHeader->FileSystemGuid, &gEfiSystemNvDataFvGuid) == FALSE ) {\r
- DEBUG ((EFI_D_ERROR, "ValidateFvHeader: Firmware Volume Guid non-compatible\n"));\r
+ DEBUG ((EFI_D_INFO, "%a: Firmware Volume Guid non-compatible\n",\r
+ __FUNCTION__));\r
return EFI_NOT_FOUND;\r
}\r
\r
// Verify the header checksum\r
Checksum = CalculateSum16((UINT16*)FwVolHeader, FwVolHeader->HeaderLength);\r
if (Checksum != 0) {\r
- DEBUG ((EFI_D_ERROR, "ValidateFvHeader: FV checksum is invalid (Checksum:0x%X)\n",Checksum));\r
+ DEBUG ((EFI_D_INFO, "%a: FV checksum is invalid (Checksum:0x%X)\n",\r
+ __FUNCTION__, Checksum));\r
return EFI_NOT_FOUND;\r
}\r
\r
VariableStoreHeader = (VARIABLE_STORE_HEADER*)((UINTN)FwVolHeader + FwVolHeader->HeaderLength);\r
\r
// Check the Variable Store Guid\r
- if( CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) == FALSE ) {\r
- DEBUG ((EFI_D_ERROR, "ValidateFvHeader: Variable Store Guid non-compatible\n"));\r
+ if (!CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) &&\r
+ !CompareGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid)) {\r
+ DEBUG ((EFI_D_INFO, "%a: Variable Store Guid non-compatible\n",\r
+ __FUNCTION__));\r
return EFI_NOT_FOUND;\r
}\r
\r
VariableStoreLength = PcdGet32 (PcdFlashNvStorageVariableSize) - FwVolHeader->HeaderLength;\r
if (VariableStoreHeader->Size != VariableStoreLength) {\r
- DEBUG ((EFI_D_ERROR, "ValidateFvHeader: Variable Store Length does not match\n"));\r
+ DEBUG ((EFI_D_INFO, "%a: Variable Store Length does not match\n",\r
+ __FUNCTION__));\r
return EFI_NOT_FOUND;\r
}\r
\r
\r
ASSERT(Address != NULL);\r
\r
- *Address = PcdGet32 (PcdFlashNvStorageVariableBase);\r
+ *Address = mFlashNvStorageVariableBase;\r
return EFI_SUCCESS;\r
}\r
\r
IN OUT UINT8 *Buffer\r
)\r
{\r
- EFI_STATUS Status;\r
EFI_STATUS TempStatus;\r
UINTN BlockSize;\r
- UINT8 *BlockBuffer;\r
NOR_FLASH_INSTANCE *Instance;\r
\r
Instance = INSTANCE_FROM_FVB_THIS(This);\r
\r
DEBUG ((DEBUG_BLKIO, "FvbRead(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Instance->StartLba + Lba, Offset, *NumBytes, Buffer));\r
\r
- if (!Instance->Initialized && Instance->Initialize) {\r
- Instance->Initialize(Instance);\r
- }\r
-\r
- Status = EFI_SUCCESS;\r
- TempStatus = Status;\r
+ TempStatus = EFI_SUCCESS;\r
\r
// Cache the block size to avoid de-referencing pointers all the time\r
BlockSize = Instance->Media.BlockSize;\r
return EFI_BAD_BUFFER_SIZE;\r
}\r
\r
- // FixMe: Allow an arbitrary number of bytes to be read out, not just a multiple of block size.\r
-\r
- // Allocate runtime memory to read in the NOR Flash data. Variable Services are runtime.\r
- BlockBuffer = AllocateRuntimePool (BlockSize);\r
-\r
- // Check if the memory allocation was successful\r
- if (BlockBuffer == NULL) {\r
- DEBUG ((EFI_D_ERROR, "FvbRead: ERROR - Could not allocate BlockBuffer @ 0x%08x.\n", BlockBuffer));\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- // Read NOR Flash data into shadow buffer\r
- TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, BlockBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- Status = EFI_DEVICE_ERROR;\r
- goto FREE_MEMORY;\r
+ // Decide if we are doing full block reads or not.\r
+ if (*NumBytes % BlockSize != 0) {\r
+ TempStatus = NorFlashRead (Instance, Instance->StartLba + Lba, Offset, *NumBytes, Buffer);\r
+ if (EFI_ERROR (TempStatus)) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ } else {\r
+ // Read NOR Flash data into shadow buffer\r
+ TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, Buffer);\r
+ if (EFI_ERROR (TempStatus)) {\r
+ // Return one of the pre-approved error statuses\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
}\r
-\r
- // Put the data at the appropriate location inside the buffer area\r
- DEBUG ((DEBUG_BLKIO, "FvbRead: CopyMem( Dst=0x%08x, Src=0x%08x, Size=0x%x ).\n", Buffer, BlockBuffer + Offset, *NumBytes));\r
-\r
- CopyMem(Buffer, BlockBuffer + Offset, *NumBytes);\r
-\r
-FREE_MEMORY:\r
- FreePool(BlockBuffer);\r
- return Status;\r
+ return EFI_SUCCESS;\r
}\r
\r
/**\r
IN UINT8 *Buffer\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_STATUS TempStatus;\r
- UINTN BlockSize;\r
- UINT8 *BlockBuffer;\r
NOR_FLASH_INSTANCE *Instance;\r
\r
- Instance = INSTANCE_FROM_FVB_THIS(This);\r
-\r
- if (!Instance->Initialized && Instance->Initialize) {\r
- Instance->Initialize(Instance);\r
- }\r
-\r
- DEBUG ((DEBUG_BLKIO, "FvbWrite(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Instance->StartLba + Lba, Offset, *NumBytes, Buffer));\r
-\r
- Status = EFI_SUCCESS;\r
- TempStatus = Status;\r
-\r
- // Detect WriteDisabled state\r
- if (Instance->Media.ReadOnly == TRUE) {\r
- DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - Can not write: Device is in WriteDisabled state.\n"));\r
- // It is in WriteDisabled state, return an error right away\r
- return EFI_ACCESS_DENIED;\r
- }\r
-\r
- // Cache the block size to avoid de-referencing pointers all the time\r
- BlockSize = Instance->Media.BlockSize;\r
-\r
- // The write must not span block boundaries.\r
- // We need to check each variable individually because adding two large values together overflows.\r
- if ( ( Offset >= BlockSize ) ||\r
- ( *NumBytes > BlockSize ) ||\r
- ( (Offset + *NumBytes) > BlockSize ) ) {\r
- DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize ));\r
- return EFI_BAD_BUFFER_SIZE;\r
- }\r
-\r
- // We must have some bytes to write\r
- if (*NumBytes == 0) {\r
- DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize ));\r
- return EFI_BAD_BUFFER_SIZE;\r
- }\r
-\r
- // Allocate runtime memory to read in the NOR Flash data.\r
- // Since the intention is to use this with Variable Services and since these are runtime,\r
- // allocate the memory from the runtime pool.\r
- BlockBuffer = AllocateRuntimePool (BlockSize);\r
-\r
- // Check we did get some memory\r
- if( BlockBuffer == NULL ) {\r
- DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - Can not allocate BlockBuffer @ 0x%08x.\n", BlockBuffer));\r
- return EFI_DEVICE_ERROR;\r
- }\r
+ Instance = INSTANCE_FROM_FVB_THIS (This);\r
\r
- // Read NOR Flash data into shadow buffer\r
- TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, BlockBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- Status = EFI_DEVICE_ERROR;\r
- goto FREE_MEMORY;\r
- }\r
-\r
- // Put the data at the appropriate location inside the buffer area\r
- CopyMem((BlockBuffer + Offset), Buffer, *NumBytes);\r
-\r
- // Write the modified buffer back to the NorFlash\r
- TempStatus = NorFlashWriteBlocks (Instance, Instance->StartLba + Lba, BlockSize, BlockBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- Status = EFI_DEVICE_ERROR;\r
- goto FREE_MEMORY;\r
- }\r
-\r
-FREE_MEMORY:\r
- FreePool(BlockBuffer);\r
- return Status;\r
+ return NorFlashWriteSingleBlock (Instance, Instance->StartLba + Lba, Offset, NumBytes, Buffer);\r
}\r
\r
/**\r
}\r
\r
// How many Lba blocks are we requested to erase?\r
- NumOfLba = VA_ARG (Args, UINT32);\r
+ NumOfLba = VA_ARG (Args, UINTN);\r
\r
// All blocks must be within range\r
- DEBUG ((DEBUG_BLKIO, "FvbEraseBlocks: Check if: ( StartingLba=%ld + NumOfLba=%d - 1 ) > LastBlock=%ld.\n", Instance->StartLba + StartingLba, NumOfLba, Instance->Media.LastBlock));\r
+ DEBUG ((\r
+ DEBUG_BLKIO,\r
+ "FvbEraseBlocks: Check if: ( StartingLba=%ld + NumOfLba=%Lu - 1 ) > LastBlock=%ld.\n",\r
+ Instance->StartLba + StartingLba,\r
+ (UINT64)NumOfLba,\r
+ Instance->Media.LastBlock\r
+ ));\r
if ((NumOfLba == 0) || ((Instance->StartLba + StartingLba + NumOfLba - 1) > Instance->Media.LastBlock)) {\r
VA_END (Args);\r
DEBUG ((EFI_D_ERROR, "FvbEraseBlocks: ERROR - Lba range goes past the last Lba.\n"));\r
}\r
\r
// How many Lba blocks are we requested to erase?\r
- NumOfLba = VA_ARG (Args, UINT32);\r
+ NumOfLba = VA_ARG (Args, UINTN);\r
\r
// Go through each one and erase it\r
while (NumOfLba > 0) {\r
return Status;\r
}\r
\r
+/**\r
+ Fixup internal data so that EFI can be call in virtual mode.\r
+ Call the passed in Child Notify event and convert any pointers in\r
+ lib to virtual mode.\r
+\r
+ @param[in] Event The Event that is being processed\r
+ @param[in] Context Event Context\r
+**/\r
+VOID\r
+EFIAPI\r
+FvbVirtualNotifyEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+{\r
+ EfiConvertPointer (0x0, (VOID**)&mFlashNvStorageVariableBase);\r
+ return;\r
+}\r
+\r
EFI_STATUS\r
EFIAPI\r
NorFlashFvbInitialize (\r
EFI_STATUS Status;\r
UINT32 FvbNumLba;\r
EFI_BOOT_MODE BootMode;\r
+ UINTN RuntimeMmioRegionSize;\r
\r
DEBUG((DEBUG_BLKIO,"NorFlashFvbInitialize\n"));\r
+ ASSERT((Instance != NULL));\r
+\r
+ //\r
+ // Declare the Non-Volatile storage as EFI_MEMORY_RUNTIME\r
+ //\r
\r
- Instance->Initialized = TRUE;\r
+ // Note: all the NOR Flash region needs to be reserved into the UEFI Runtime memory;\r
+ // even if we only use the small block region at the top of the NOR Flash.\r
+ // The reason is when the NOR Flash memory is set into program mode, the command\r
+ // is written as the base of the flash region (ie: Instance->DeviceBaseAddress)\r
+ RuntimeMmioRegionSize = (Instance->RegionBaseAddress - Instance->DeviceBaseAddress) + Instance->Size;\r
+\r
+ Status = gDS->AddMemorySpace (\r
+ EfiGcdMemoryTypeMemoryMappedIo,\r
+ Instance->DeviceBaseAddress, RuntimeMmioRegionSize,\r
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = gDS->SetMemorySpaceAttributes (\r
+ Instance->DeviceBaseAddress, RuntimeMmioRegionSize,\r
+ EFI_MEMORY_UC | EFI_MEMORY_RUNTIME);\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ mFlashNvStorageVariableBase = FixedPcdGet32 (PcdFlashNvStorageVariableBase);\r
\r
// Set the index of the first LBA for the FVB\r
Instance->StartLba = (PcdGet32 (PcdFlashNvStorageVariableBase) - Instance->RegionBaseAddress) / Instance->Media.BlockSize;\r
Status = ValidateFvHeader (Instance);\r
}\r
\r
- // Install the Default FVB header if required \r
+ // Install the Default FVB header if required\r
if (EFI_ERROR(Status)) {\r
// There is no valid header, so time to install one.\r
- DEBUG((EFI_D_ERROR,"NorFlashFvbInitialize: ERROR - The FVB Header is not valid. Installing a correct one for this volume.\n"));\r
+ DEBUG ((EFI_D_INFO, "%a: The FVB Header is not valid.\n", __FUNCTION__));\r
+ DEBUG ((EFI_D_INFO, "%a: Installing a correct one for this volume.\n",\r
+ __FUNCTION__));\r
\r
// Erase all the NorFlash that is reserved for variable storage\r
FvbNumLba = (PcdGet32(PcdFlashNvStorageVariableSize) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) + PcdGet32(PcdFlashNvStorageFtwSpareSize)) / Instance->Media.BlockSize;\r
return Status;\r
}\r
}\r
+\r
+ //\r
+ // Register for the virtual address change event\r
+ //\r
+ Status = gBS->CreateEventEx (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_NOTIFY,\r
+ FvbVirtualNotifyEvent,\r
+ NULL,\r
+ &gEfiEventVirtualAddressChangeGuid,\r
+ &mFvbVirtualAddrChangeEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
return Status;\r
}\r
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