diff options
Diffstat (limited to 'UefiPayloadPkg/Library/FlashDeviceLib/FlashDeviceLib.c')
| -rw-r--r-- | UefiPayloadPkg/Library/FlashDeviceLib/FlashDeviceLib.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/UefiPayloadPkg/Library/FlashDeviceLib/FlashDeviceLib.c b/UefiPayloadPkg/Library/FlashDeviceLib/FlashDeviceLib.c new file mode 100644 index 0000000000..065841bc93 --- /dev/null +++ b/UefiPayloadPkg/Library/FlashDeviceLib/FlashDeviceLib.c @@ -0,0 +1,165 @@ +/** @file
+ Flash Device Library based on SPI Flash library.
+
+Copyright (c) 2018 - 2021, Intel Corporation. All rights reserved. <BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/SpiFlashLib.h>
+
+/**
+ Initialize spi flash device.
+
+ @retval EFI_SUCCESS The tested spi flash device is supported.
+ @retval EFI_UNSUPPORTED The tested spi flash device is not supported.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceInit (
+ VOID
+ )
+{
+ return SpiConstructor ();
+}
+
+
+/**
+ Read NumBytes bytes of data from the address specified by
+ PAddress into Buffer.
+
+ @param[in] PAddress The starting physical address of the read.
+ @param[in,out] NumBytes On input, the number of bytes to read. On output, the number
+ of bytes actually read.
+ @param[out] Buffer The destination data buffer for the read.
+
+ @retval EFI_SUCCESS. Opertion is successful.
+ @retval EFI_DEVICE_ERROR If there is any device errors.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceRead (
+ IN UINTN PAddress,
+ IN OUT UINTN *NumBytes,
+ OUT UINT8 *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 ByteCount;
+ UINT32 RgnSize;
+ UINT32 AddrOffset;
+
+ Status = SpiGetRegionAddress (FlashRegionBios, NULL, &RgnSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ // BIOS region offset can be calculated by (PAddress - (0x100000000 - RgnSize))
+ // which equal (PAddress + RgnSize) here.
+ AddrOffset = (UINT32)((UINT32)PAddress + RgnSize);
+ ByteCount = (UINT32)*NumBytes;
+ return SpiFlashRead (FlashRegionBios, AddrOffset, ByteCount, Buffer);
+}
+
+
+/**
+ Write NumBytes bytes of data from Buffer to the address specified by
+ PAddresss.
+
+ @param[in] PAddress The starting physical address of the write.
+ @param[in,out] NumBytes On input, the number of bytes to write. On output,
+ the actual number of bytes written.
+ @param[in] Buffer The source data buffer for the write.
+
+ @retval EFI_SUCCESS. Opertion is successful.
+ @retval EFI_DEVICE_ERROR If there is any device errors.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceWrite (
+ IN UINTN PAddress,
+ IN OUT UINTN *NumBytes,
+ IN UINT8 *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 ByteCount;
+ UINT32 RgnSize;
+ UINT32 AddrOffset;
+
+ Status = SpiGetRegionAddress (FlashRegionBios, NULL, &RgnSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ // BIOS region offset can be calculated by (PAddress - (0x100000000 - RgnSize))
+ // which equal (PAddress + RgnSize) here.
+ AddrOffset = (UINT32)((UINT32)PAddress + RgnSize);
+ ByteCount = (UINT32)*NumBytes;
+ return SpiFlashWrite (FlashRegionBios, AddrOffset, ByteCount, Buffer);
+}
+
+
+/**
+ Erase the block starting at PAddress.
+
+ @param[in] PAddress The starting physical address of the block to be erased.
+ This library assume that caller garantee that the PAddress
+ is at the starting address of this block.
+ @param[in] LbaLength The length of the logical block to be erased.
+
+ @retval EFI_SUCCESS. Opertion is successful.
+ @retval EFI_DEVICE_ERROR If there is any device errors.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceBlockErase (
+ IN UINTN PAddress,
+ IN UINTN LbaLength
+ )
+{
+ EFI_STATUS Status;
+ UINT32 RgnSize;
+ UINT32 AddrOffset;
+
+ Status = SpiGetRegionAddress (FlashRegionBios, NULL, &RgnSize);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ // BIOS region offset can be calculated by (PAddress - (0x100000000 - RgnSize))
+ // which equal (PAddress + RgnSize) here.
+ AddrOffset = (UINT32)((UINT32)PAddress + RgnSize);
+ return SpiFlashErase (FlashRegionBios, AddrOffset, (UINT32)LbaLength);
+}
+
+
+/**
+ Lock or unlock the block starting at PAddress.
+
+ @param[in] PAddress The starting physical address of region to be (un)locked.
+ @param[in] LbaLength The length of the logical block to be erased.
+ @param[in] Lock TRUE to lock. FALSE to unlock.
+
+ @retval EFI_SUCCESS. Opertion is successful.
+ @retval EFI_DEVICE_ERROR If there is any device errors.
+
+**/
+EFI_STATUS
+EFIAPI
+LibFvbFlashDeviceBlockLock (
+ IN UINTN PAddress,
+ IN UINTN LbaLength,
+ IN BOOLEAN Lock
+ )
+{
+ return EFI_SUCCESS;
+}
+
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