#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
\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
NOR_FLASH_INSTANCE *Instance;\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
- // Check we did get some memory\r
- if (Instance->FvbBuffer == NULL) {\r
- DEBUG ((EFI_D_ERROR, "FvbRead: ERROR - Buffer not ready\n"));\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- // Read NOR Flash data into shadow buffer\r
- TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, Instance->FvbBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- return EFI_DEVICE_ERROR;\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, (UINTN)Instance->FvbBuffer + Offset, *NumBytes));\r
-\r
- CopyMem (Buffer, (VOID*)((UINTN)Instance->FvbBuffer + Offset), *NumBytes);\r
-\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
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
+ Instance = INSTANCE_FROM_FVB_THIS (This);\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
- // Check we did get some memory\r
- if (Instance->FvbBuffer == NULL) {\r
- DEBUG ((EFI_D_ERROR, "FvbWrite: ERROR - Buffer not ready\n"));\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- // Read NOR Flash data into shadow buffer\r
- TempStatus = NorFlashReadBlocks (Instance, Instance->StartLba + Lba, BlockSize, Instance->FvbBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- // Put the data at the appropriate location inside the buffer area\r
- CopyMem ((VOID*)((UINTN)Instance->FvbBuffer + Offset), Buffer, *NumBytes);\r
-\r
- // Write the modified buffer back to the NorFlash\r
- TempStatus = NorFlashWriteBlocks (Instance, Instance->StartLba + Lba, BlockSize, Instance->FvbBuffer);\r
- if (EFI_ERROR (TempStatus)) {\r
- // Return one of the pre-approved error statuses\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- return Status;\r
+ return NorFlashWriteSingleBlock (Instance, Lba, Offset, NumBytes, Buffer);\r
}\r
\r
/**\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
\r
Instance->Initialized = TRUE;\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
return Status;\r
}\r
}\r
+\r
+ //\r
+ // Declare the Non-Volatile storage as EFI_MEMORY_RUNTIME\r
+ //\r
+\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
+ //\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
projects / mirror_edk2.git / blobdiff