/** @file
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Platform Flash Access library.
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Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <Library/PlatformFlashAccessLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Protocol/Spi.h>
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//
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// SPI default opcode slots
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//
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#define SPI_OPCODE_JEDEC_ID_INDEX 0
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#define SPI_OPCODE_READ_ID_INDEX 1
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#define SPI_OPCODE_WRITE_S_INDEX 2
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#define SPI_OPCODE_WRITE_INDEX 3
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#define SPI_OPCODE_READ_INDEX 4
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#define SPI_OPCODE_ERASE_INDEX 5
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#define SPI_OPCODE_READ_S_INDEX 6
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#define SPI_OPCODE_CHIP_ERASE_INDEX 7
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#define SPI_ERASE_SECTOR_SIZE SIZE_4KB //This is the chipset requirement
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STATIC EFI_PHYSICAL_ADDRESS mInternalFdAddress;
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EFI_SPI_PROTOCOL *mSpiProtocol;
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/**
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Writes specified number of bytes from the input buffer to the address
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@param[in] WriteAddress The flash address to be written.
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@param[in, out] NumBytes The number of bytes.
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@param[in] Buffer The data buffer to be written.
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@return The status of flash write.
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**/
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EFI_STATUS
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FlashFdWrite (
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IN UINTN WriteAddress,
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IN OUT UINTN *NumBytes,
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IN UINT8 *Buffer
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)
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{
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EFI_STATUS Status;
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Status = EFI_SUCCESS;
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Status = mSpiProtocol->Execute (
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mSpiProtocol,
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SPI_OPCODE_WRITE_INDEX, // OpcodeIndex
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0, // PrefixOpcodeIndex
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TRUE, // DataCycle
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TRUE, // Atomic
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TRUE, // ShiftOut
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WriteAddress, // Address
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(UINT32) (*NumBytes), // Data Number
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Buffer,
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EnumSpiRegionBios
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);
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DEBUG((DEBUG_INFO, "FlashFdWrite - 0x%x - %r\n", (UINTN)WriteAddress, Status));
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AsmWbinvd ();
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return Status;
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}
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/**
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Erase a certain block from address LbaWriteAddress
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@param[in] WriteAddress The flash address to be erased.
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@return The status of flash erase.
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**/
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EFI_STATUS
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FlashFdErase (
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IN UINTN WriteAddress
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)
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{
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EFI_STATUS Status;
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Status = mSpiProtocol->Execute (
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mSpiProtocol,
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SPI_OPCODE_ERASE_INDEX, // OpcodeIndex
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0, // PrefixOpcodeIndex
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FALSE, // DataCycle
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TRUE, // Atomic
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FALSE, // ShiftOut
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WriteAddress, // Address
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0, // Data Number
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NULL,
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EnumSpiRegionBios // SPI_REGION_TYPE
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);
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DEBUG((DEBUG_INFO, "FlashFdErase - 0x%x - %r\n", (UINTN)WriteAddress, Status));
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AsmWbinvd ();
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return Status;
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}
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/**
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Perform flash write operation with progress indicator. The start and end
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completion percentage values are passed into this function. If the requested
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flash write operation is broken up, then completion percentage between the
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start and end values may be passed to the provided Progress function. The
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caller of this function is required to call the Progress function for the
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start and end completion percentage values. This allows the Progress,
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StartPercentage, and EndPercentage parameters to be ignored if the requested
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flash write operation can not be broken up
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@param[in] FirmwareType The type of firmware.
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@param[in] FlashAddress The address of flash device to be accessed.
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@param[in] FlashAddressType The type of flash device address.
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@param[in] Buffer The pointer to the data buffer.
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@param[in] Length The length of data buffer in bytes.
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@param[in] Progress A function used report the progress of the
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firmware update. This is an optional parameter
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that may be NULL.
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@param[in] StartPercentage The start completion percentage value that may
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be used to report progress during the flash
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write operation.
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@param[in] EndPercentage The end completion percentage value that may
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be used to report progress during the flash
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write operation.
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@retval EFI_SUCCESS The operation returns successfully.
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@retval EFI_WRITE_PROTECTED The flash device is read only.
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@retval EFI_UNSUPPORTED The flash device access is unsupported.
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@retval EFI_INVALID_PARAMETER The input parameter is not valid.
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**/
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EFI_STATUS
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EFIAPI
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PerformFlashWriteWithProgress (
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IN PLATFORM_FIRMWARE_TYPE FirmwareType,
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IN EFI_PHYSICAL_ADDRESS FlashAddress,
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IN FLASH_ADDRESS_TYPE FlashAddressType,
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IN VOID *Buffer,
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IN UINTN Length,
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IN EFI_FIRMWARE_MANAGEMENT_UPDATE_IMAGE_PROGRESS Progress, OPTIONAL
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IN UINTN StartPercentage,
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IN UINTN EndPercentage
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)
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{
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EFI_STATUS Status;
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UINTN SectorNum;
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UINTN Index;
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UINTN NumBytes;
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DEBUG((DEBUG_INFO, "PerformFlashWrite - 0x%x(%x) - 0x%x\n", (UINTN)FlashAddress, (UINTN)FlashAddressType, Length));
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if (FlashAddressType == FlashAddressTypeAbsoluteAddress) {
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FlashAddress = FlashAddress - mInternalFdAddress;
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}
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//
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// Erase & Write
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//
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SectorNum = Length / SPI_ERASE_SECTOR_SIZE;
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for (Index = 0; Index < SectorNum; Index++){
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if (Progress != NULL) {
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Progress (StartPercentage + ((Index * (EndPercentage - StartPercentage)) / SectorNum));
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}
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if (CompareMem(
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(UINT8 *)(UINTN)(FlashAddress + mInternalFdAddress) + Index * SPI_ERASE_SECTOR_SIZE,
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(UINT8 *)Buffer + Index * SPI_ERASE_SECTOR_SIZE,
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SPI_ERASE_SECTOR_SIZE) == 0) {
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DEBUG((DEBUG_INFO, "Sector - 0x%x - skip\n", Index));
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continue;
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}
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DEBUG((DEBUG_INFO, "Sector - 0x%x - update...\n", Index));
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Status = FlashFdErase (
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(UINTN)FlashAddress + Index * SPI_ERASE_SECTOR_SIZE
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);
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if (Status != EFI_SUCCESS){
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break;
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}
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NumBytes = SPI_ERASE_SECTOR_SIZE;
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Status = FlashFdWrite (
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(UINTN)FlashAddress + Index * SPI_ERASE_SECTOR_SIZE,
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&NumBytes,
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(UINT8 *)Buffer + Index * SPI_ERASE_SECTOR_SIZE
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);
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if (Status != EFI_SUCCESS){
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break;
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}
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}
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if (Progress != NULL) {
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Progress (EndPercentage);
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}
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return EFI_SUCCESS;
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}
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/**
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Perform flash write operation.
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@param[in] FirmwareType The type of firmware.
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@param[in] FlashAddress The address of flash device to be accessed.
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@param[in] FlashAddressType The type of flash device address.
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@param[in] Buffer The pointer to the data buffer.
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@param[in] Length The length of data buffer in bytes.
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@retval EFI_SUCCESS The operation returns successfully.
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@retval EFI_WRITE_PROTECTED The flash device is read only.
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@retval EFI_UNSUPPORTED The flash device access is unsupported.
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@retval EFI_INVALID_PARAMETER The input parameter is not valid.
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**/
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EFI_STATUS
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EFIAPI
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PerformFlashWrite (
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IN PLATFORM_FIRMWARE_TYPE FirmwareType,
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IN EFI_PHYSICAL_ADDRESS FlashAddress,
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IN FLASH_ADDRESS_TYPE FlashAddressType,
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IN VOID *Buffer,
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IN UINTN Length
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)
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{
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return PerformFlashWriteWithProgress (
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FirmwareType,
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FlashAddress,
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FlashAddressType,
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Buffer,
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Length,
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NULL,
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0,
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0
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);
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}
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/**
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Platform Flash Access Lib Constructor.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS Constructor returns successfully.
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**/
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EFI_STATUS
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EFIAPI
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PerformFlashAccessLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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mInternalFdAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)PcdGet32(PcdFlashAreaBaseAddress);
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DEBUG((DEBUG_INFO, "PcdFlashAreaBaseAddress - 0x%x\n", mInternalFdAddress));
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Status = gBS->LocateProtocol(&gEfiSpiProtocolGuid, NULL, (VOID **)&mSpiProtocol);
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ASSERT_EFI_ERROR(Status);
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return EFI_SUCCESS;
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}
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