|
@@ -1,991 +0,0 @@
|
|
|
-/** @file NorFlash.c
|
|
|
-
|
|
|
- Copyright (c) 2011 - 2020, Arm Limited. All rights reserved.<BR>
|
|
|
- Copyright (c) 2020, Linaro, Ltd. All rights reserved.<BR>
|
|
|
-
|
|
|
- SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
-
|
|
|
-**/
|
|
|
-
|
|
|
-#include <Library/BaseMemoryLib.h>
|
|
|
-
|
|
|
-#include "NorFlash.h"
|
|
|
-
|
|
|
-//
|
|
|
-// Global variable declarations
|
|
|
-//
|
|
|
-extern NOR_FLASH_INSTANCE **mNorFlashInstances;
|
|
|
-extern UINT32 mNorFlashDeviceCount;
|
|
|
-
|
|
|
-UINT32
|
|
|
-NorFlashReadStatusRegister (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN SR_Address
|
|
|
- )
|
|
|
-{
|
|
|
- // Prepare to read the status register
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_STATUS_REGISTER);
|
|
|
- return MmioRead32 (Instance->DeviceBaseAddress);
|
|
|
-}
|
|
|
-
|
|
|
-STATIC
|
|
|
-BOOLEAN
|
|
|
-NorFlashBlockIsLocked (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN BlockAddress
|
|
|
- )
|
|
|
-{
|
|
|
- UINT32 LockStatus;
|
|
|
-
|
|
|
- // Send command for reading device id
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);
|
|
|
-
|
|
|
- // Read block lock status
|
|
|
- LockStatus = MmioRead32 (CREATE_NOR_ADDRESS (BlockAddress, 2));
|
|
|
-
|
|
|
- // Decode block lock status
|
|
|
- LockStatus = FOLD_32BIT_INTO_16BIT (LockStatus);
|
|
|
-
|
|
|
- if ((LockStatus & 0x2) != 0) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashBlockIsLocked: WARNING: Block LOCKED DOWN\n"));
|
|
|
- }
|
|
|
-
|
|
|
- return ((LockStatus & 0x1) != 0);
|
|
|
-}
|
|
|
-
|
|
|
-STATIC
|
|
|
-EFI_STATUS
|
|
|
-NorFlashUnlockSingleBlock (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN BlockAddress
|
|
|
- )
|
|
|
-{
|
|
|
- UINT32 LockStatus;
|
|
|
-
|
|
|
- // Raise the Task Priority Level to TPL_NOTIFY to serialise all its operations
|
|
|
- // and to protect shared data structures.
|
|
|
-
|
|
|
- if (FeaturePcdGet (PcdNorFlashCheckBlockLocked) == TRUE) {
|
|
|
- do {
|
|
|
- // Request a lock setup
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);
|
|
|
-
|
|
|
- // Request an unlock
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);
|
|
|
-
|
|
|
- // Send command for reading device id
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 2, P30_CMD_READ_DEVICE_ID);
|
|
|
-
|
|
|
- // Read block lock status
|
|
|
- LockStatus = MmioRead32 (CREATE_NOR_ADDRESS (BlockAddress, 2));
|
|
|
-
|
|
|
- // Decode block lock status
|
|
|
- LockStatus = FOLD_32BIT_INTO_16BIT (LockStatus);
|
|
|
- } while ((LockStatus & 0x1) == 1);
|
|
|
- } else {
|
|
|
- // Request a lock setup
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_LOCK_BLOCK_SETUP);
|
|
|
-
|
|
|
- // Request an unlock
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_UNLOCK_BLOCK);
|
|
|
-
|
|
|
- // Wait until the status register gives us the all clear
|
|
|
- do {
|
|
|
- LockStatus = NorFlashReadStatusRegister (Instance, BlockAddress);
|
|
|
- } while ((LockStatus & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);
|
|
|
- }
|
|
|
-
|
|
|
- // Put device back into Read Array mode
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- DEBUG ((DEBUG_BLKIO, "UnlockSingleBlock: BlockAddress=0x%08x\n", BlockAddress));
|
|
|
-
|
|
|
- return EFI_SUCCESS;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashUnlockSingleBlockIfNecessary (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN BlockAddress
|
|
|
- )
|
|
|
-{
|
|
|
- EFI_STATUS Status;
|
|
|
-
|
|
|
- Status = EFI_SUCCESS;
|
|
|
-
|
|
|
- if (NorFlashBlockIsLocked (Instance, BlockAddress)) {
|
|
|
- Status = NorFlashUnlockSingleBlock (Instance, BlockAddress);
|
|
|
- }
|
|
|
-
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * The following function presumes that the block has already been unlocked.
|
|
|
- **/
|
|
|
-EFI_STATUS
|
|
|
-NorFlashEraseSingleBlock (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN BlockAddress
|
|
|
- )
|
|
|
-{
|
|
|
- EFI_STATUS Status;
|
|
|
- UINT32 StatusRegister;
|
|
|
-
|
|
|
- Status = EFI_SUCCESS;
|
|
|
-
|
|
|
- // Request a block erase and then confirm it
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_BLOCK_ERASE_SETUP);
|
|
|
- SEND_NOR_COMMAND (BlockAddress, 0, P30_CMD_BLOCK_ERASE_CONFIRM);
|
|
|
-
|
|
|
- // Wait until the status register gives us the all clear
|
|
|
- do {
|
|
|
- StatusRegister = NorFlashReadStatusRegister (Instance, BlockAddress);
|
|
|
- } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_VPP) {
|
|
|
- DEBUG ((DEBUG_ERROR, "EraseSingleBlock(BlockAddress=0x%08x: VPP Range Error\n", BlockAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if ((StatusRegister & (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) == (P30_SR_BIT_ERASE | P30_SR_BIT_PROGRAM)) {
|
|
|
- DEBUG ((DEBUG_ERROR, "EraseSingleBlock(BlockAddress=0x%08x: Command Sequence Error\n", BlockAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_ERASE) {
|
|
|
- DEBUG ((DEBUG_ERROR, "EraseSingleBlock(BlockAddress=0x%08x: Block Erase Error StatusRegister:0x%X\n", BlockAddress, StatusRegister));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {
|
|
|
- // The debug level message has been reduced because a device lock might happen. In this case we just retry it ...
|
|
|
- DEBUG ((DEBUG_INFO, "EraseSingleBlock(BlockAddress=0x%08x: Block Locked Error\n", BlockAddress));
|
|
|
- Status = EFI_WRITE_PROTECTED;
|
|
|
- }
|
|
|
-
|
|
|
- if (EFI_ERROR (Status)) {
|
|
|
- // Clear the Status Register
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);
|
|
|
- }
|
|
|
-
|
|
|
- // Put device back into Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashWriteSingleWord (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN WordAddress,
|
|
|
- IN UINT32 WriteData
|
|
|
- )
|
|
|
-{
|
|
|
- EFI_STATUS Status;
|
|
|
- UINT32 StatusRegister;
|
|
|
-
|
|
|
- Status = EFI_SUCCESS;
|
|
|
-
|
|
|
- // Request a write single word command
|
|
|
- SEND_NOR_COMMAND (WordAddress, 0, P30_CMD_WORD_PROGRAM_SETUP);
|
|
|
-
|
|
|
- // Store the word into NOR Flash;
|
|
|
- MmioWrite32 (WordAddress, WriteData);
|
|
|
-
|
|
|
- // Wait for the write to complete and then check for any errors; i.e. check the Status Register
|
|
|
- do {
|
|
|
- // Prepare to read the status register
|
|
|
- StatusRegister = NorFlashReadStatusRegister (Instance, WordAddress);
|
|
|
- // The chip is busy while the WRITE bit is not asserted
|
|
|
- } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);
|
|
|
-
|
|
|
- // Perform a full status check:
|
|
|
- // Mask the relevant bits of Status Register.
|
|
|
- // Everything should be zero, if not, we have a problem
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_VPP) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleWord(WordAddress:0x%X): VPP Range Error\n", WordAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_PROGRAM) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleWord(WordAddress:0x%X): Program Error\n", WordAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleWord(WordAddress:0x%X): Device Protect Error\n", WordAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (!EFI_ERROR (Status)) {
|
|
|
- // Clear the Status Register
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);
|
|
|
- }
|
|
|
-
|
|
|
- // Put device back into Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Writes data to the NOR Flash using the Buffered Programming method.
|
|
|
- *
|
|
|
- * The maximum size of the on-chip buffer is 32-words, because of hardware restrictions.
|
|
|
- * Therefore this function will only handle buffers up to 32 words or 128 bytes.
|
|
|
- * To deal with larger buffers, call this function again.
|
|
|
- *
|
|
|
- * This function presumes that both the TargetAddress and the TargetAddress+BufferSize
|
|
|
- * exist entirely within the NOR Flash. Therefore these conditions will not be checked here.
|
|
|
- *
|
|
|
- * In buffered programming, if the target address not at the beginning of a 32-bit word boundary,
|
|
|
- * then programming time is doubled and power consumption is increased.
|
|
|
- * Therefore, it is a requirement to align buffer writes to 32-bit word boundaries.
|
|
|
- * i.e. the last 4 bits of the target start address must be zero: 0x......00
|
|
|
- */
|
|
|
-EFI_STATUS
|
|
|
-NorFlashWriteBuffer (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN UINTN TargetAddress,
|
|
|
- IN UINTN BufferSizeInBytes,
|
|
|
- IN UINT32 *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- EFI_STATUS Status;
|
|
|
- UINTN BufferSizeInWords;
|
|
|
- UINTN Count;
|
|
|
- volatile UINT32 *Data;
|
|
|
- UINTN WaitForBuffer;
|
|
|
- BOOLEAN BufferAvailable;
|
|
|
- UINT32 StatusRegister;
|
|
|
-
|
|
|
- WaitForBuffer = MAX_BUFFERED_PROG_ITERATIONS;
|
|
|
- BufferAvailable = FALSE;
|
|
|
-
|
|
|
- // Check that the target address does not cross a 32-word boundary.
|
|
|
- if ((TargetAddress & BOUNDARY_OF_32_WORDS) != 0) {
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- // Check there are some data to program
|
|
|
- if (BufferSizeInBytes == 0) {
|
|
|
- return EFI_BUFFER_TOO_SMALL;
|
|
|
- }
|
|
|
-
|
|
|
- // Check that the buffer size does not exceed the maximum hardware buffer size on chip.
|
|
|
- if (BufferSizeInBytes > P30_MAX_BUFFER_SIZE_IN_BYTES) {
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // Check that the buffer size is a multiple of 32-bit words
|
|
|
- if ((BufferSizeInBytes % 4) != 0) {
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // Pre-programming conditions checked, now start the algorithm.
|
|
|
-
|
|
|
- // Prepare the data destination address
|
|
|
- Data = (UINT32 *)TargetAddress;
|
|
|
-
|
|
|
- // Check the availability of the buffer
|
|
|
- do {
|
|
|
- // Issue the Buffered Program Setup command
|
|
|
- SEND_NOR_COMMAND (TargetAddress, 0, P30_CMD_BUFFERED_PROGRAM_SETUP);
|
|
|
-
|
|
|
- // Read back the status register bit#7 from the same address
|
|
|
- if (((*Data) & P30_SR_BIT_WRITE) == P30_SR_BIT_WRITE) {
|
|
|
- BufferAvailable = TRUE;
|
|
|
- }
|
|
|
-
|
|
|
- // Update the loop counter
|
|
|
- WaitForBuffer--;
|
|
|
- } while ((WaitForBuffer > 0) && (BufferAvailable == FALSE));
|
|
|
-
|
|
|
- // The buffer was not available for writing
|
|
|
- if (WaitForBuffer == 0) {
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- goto EXIT;
|
|
|
- }
|
|
|
-
|
|
|
- // From now on we work in 32-bit words
|
|
|
- BufferSizeInWords = BufferSizeInBytes / (UINTN)4;
|
|
|
-
|
|
|
- // Write the word count, which is (buffer_size_in_words - 1),
|
|
|
- // because word count 0 means one word.
|
|
|
- SEND_NOR_COMMAND (TargetAddress, 0, (BufferSizeInWords - 1));
|
|
|
-
|
|
|
- // Write the data to the NOR Flash, advancing each address by 4 bytes
|
|
|
- for (Count = 0; Count < BufferSizeInWords; Count++, Data++, Buffer++) {
|
|
|
- MmioWrite32 ((UINTN)Data, *Buffer);
|
|
|
- }
|
|
|
-
|
|
|
- // Issue the Buffered Program Confirm command, to start the programming operation
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_BUFFERED_PROGRAM_CONFIRM);
|
|
|
-
|
|
|
- // Wait for the write to complete and then check for any errors; i.e. check the Status Register
|
|
|
- do {
|
|
|
- StatusRegister = NorFlashReadStatusRegister (Instance, TargetAddress);
|
|
|
- // The chip is busy while the WRITE bit is not asserted
|
|
|
- } while ((StatusRegister & P30_SR_BIT_WRITE) != P30_SR_BIT_WRITE);
|
|
|
-
|
|
|
- // Perform a full status check:
|
|
|
- // Mask the relevant bits of Status Register.
|
|
|
- // Everything should be zero, if not, we have a problem
|
|
|
-
|
|
|
- Status = EFI_SUCCESS;
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_VPP) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteBuffer(TargetAddress:0x%X): VPP Range Error\n", TargetAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_PROGRAM) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteBuffer(TargetAddress:0x%X): Program Error\n", TargetAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (StatusRegister & P30_SR_BIT_BLOCK_LOCKED) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteBuffer(TargetAddress:0x%X): Device Protect Error\n", TargetAddress));
|
|
|
- Status = EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- if (!EFI_ERROR (Status)) {
|
|
|
- // Clear the Status Register
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_CLEAR_STATUS_REGISTER);
|
|
|
- }
|
|
|
-
|
|
|
-EXIT:
|
|
|
- // Put device back into Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashWriteBlocks (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN EFI_LBA Lba,
|
|
|
- IN UINTN BufferSizeInBytes,
|
|
|
- IN VOID *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- UINT32 *pWriteBuffer;
|
|
|
- EFI_STATUS Status;
|
|
|
- EFI_LBA CurrentBlock;
|
|
|
- UINT32 BlockSizeInWords;
|
|
|
- UINT32 NumBlocks;
|
|
|
- UINT32 BlockCount;
|
|
|
-
|
|
|
- Status = EFI_SUCCESS;
|
|
|
-
|
|
|
- // The buffer must be valid
|
|
|
- if (Buffer == NULL) {
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- if (Instance->Media.ReadOnly == TRUE) {
|
|
|
- return EFI_WRITE_PROTECTED;
|
|
|
- }
|
|
|
-
|
|
|
- // We must have some bytes to read
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteBlocks: BufferSizeInBytes=0x%x\n", BufferSizeInBytes));
|
|
|
- if (BufferSizeInBytes == 0) {
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // The size of the buffer must be a multiple of the block size
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteBlocks: BlockSize in bytes =0x%x\n", Instance->Media.BlockSize));
|
|
|
- if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // All blocks must be within the device
|
|
|
- NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize;
|
|
|
-
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteBlocks: NumBlocks=%d, LastBlock=%ld, Lba=%ld.\n", NumBlocks, Instance->Media.LastBlock, Lba));
|
|
|
-
|
|
|
- if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteBlocks: ERROR - Write will exceed last block.\n"));
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- BlockSizeInWords = Instance->Media.BlockSize / 4;
|
|
|
-
|
|
|
- // Because the target *Buffer is a pointer to VOID, we must put all the data into a pointer
|
|
|
- // to a proper data type, so use *ReadBuffer
|
|
|
- pWriteBuffer = (UINT32 *)Buffer;
|
|
|
-
|
|
|
- CurrentBlock = Lba;
|
|
|
- for (BlockCount = 0; BlockCount < NumBlocks; BlockCount++, CurrentBlock++, pWriteBuffer = pWriteBuffer + BlockSizeInWords) {
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteBlocks: Writing block #%d\n", (UINTN)CurrentBlock));
|
|
|
-
|
|
|
- Status = NorFlashWriteFullBlock (Instance, CurrentBlock, pWriteBuffer, BlockSizeInWords);
|
|
|
-
|
|
|
- if (EFI_ERROR (Status)) {
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteBlocks: Exit Status = \"%r\".\n", Status));
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-#define BOTH_ALIGNED(a, b, align) ((((UINTN)(a) | (UINTN)(b)) & ((align) - 1)) == 0)
|
|
|
-
|
|
|
-/**
|
|
|
- Copy Length bytes from Source to Destination, using aligned accesses only.
|
|
|
- Note that this implementation uses memcpy() semantics rather then memmove()
|
|
|
- semantics, i.e., SourceBuffer and DestinationBuffer should not overlap.
|
|
|
-
|
|
|
- @param DestinationBuffer The target of the copy request.
|
|
|
- @param SourceBuffer The place to copy from.
|
|
|
- @param Length The number of bytes to copy.
|
|
|
-
|
|
|
- @return Destination
|
|
|
-
|
|
|
-**/
|
|
|
-STATIC
|
|
|
-VOID *
|
|
|
-AlignedCopyMem (
|
|
|
- OUT VOID *DestinationBuffer,
|
|
|
- IN CONST VOID *SourceBuffer,
|
|
|
- IN UINTN Length
|
|
|
- )
|
|
|
-{
|
|
|
- UINT8 *Destination8;
|
|
|
- CONST UINT8 *Source8;
|
|
|
- UINT32 *Destination32;
|
|
|
- CONST UINT32 *Source32;
|
|
|
- UINT64 *Destination64;
|
|
|
- CONST UINT64 *Source64;
|
|
|
-
|
|
|
- if (BOTH_ALIGNED (DestinationBuffer, SourceBuffer, 8) && (Length >= 8)) {
|
|
|
- Destination64 = DestinationBuffer;
|
|
|
- Source64 = SourceBuffer;
|
|
|
- while (Length >= 8) {
|
|
|
- *Destination64++ = *Source64++;
|
|
|
- Length -= 8;
|
|
|
- }
|
|
|
-
|
|
|
- Destination8 = (UINT8 *)Destination64;
|
|
|
- Source8 = (CONST UINT8 *)Source64;
|
|
|
- } else if (BOTH_ALIGNED (DestinationBuffer, SourceBuffer, 4) && (Length >= 4)) {
|
|
|
- Destination32 = DestinationBuffer;
|
|
|
- Source32 = SourceBuffer;
|
|
|
- while (Length >= 4) {
|
|
|
- *Destination32++ = *Source32++;
|
|
|
- Length -= 4;
|
|
|
- }
|
|
|
-
|
|
|
- Destination8 = (UINT8 *)Destination32;
|
|
|
- Source8 = (CONST UINT8 *)Source32;
|
|
|
- } else {
|
|
|
- Destination8 = DestinationBuffer;
|
|
|
- Source8 = SourceBuffer;
|
|
|
- }
|
|
|
-
|
|
|
- while (Length-- != 0) {
|
|
|
- *Destination8++ = *Source8++;
|
|
|
- }
|
|
|
-
|
|
|
- return DestinationBuffer;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashReadBlocks (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN EFI_LBA Lba,
|
|
|
- IN UINTN BufferSizeInBytes,
|
|
|
- OUT VOID *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- UINT32 NumBlocks;
|
|
|
- UINTN StartAddress;
|
|
|
-
|
|
|
- DEBUG ((
|
|
|
- DEBUG_BLKIO,
|
|
|
- "NorFlashReadBlocks: BufferSize=0x%xB BlockSize=0x%xB LastBlock=%ld, Lba=%ld.\n",
|
|
|
- BufferSizeInBytes,
|
|
|
- Instance->Media.BlockSize,
|
|
|
- Instance->Media.LastBlock,
|
|
|
- Lba
|
|
|
- ));
|
|
|
-
|
|
|
- // The buffer must be valid
|
|
|
- if (Buffer == NULL) {
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- // Return if we have not any byte to read
|
|
|
- if (BufferSizeInBytes == 0) {
|
|
|
- return EFI_SUCCESS;
|
|
|
- }
|
|
|
-
|
|
|
- // The size of the buffer must be a multiple of the block size
|
|
|
- if ((BufferSizeInBytes % Instance->Media.BlockSize) != 0) {
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // All blocks must be within the device
|
|
|
- NumBlocks = ((UINT32)BufferSizeInBytes) / Instance->Media.BlockSize;
|
|
|
-
|
|
|
- if ((Lba + NumBlocks) > (Instance->Media.LastBlock + 1)) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashReadBlocks: ERROR - Read will exceed last block\n"));
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- // Get the address to start reading from
|
|
|
- StartAddress = GET_NOR_BLOCK_ADDRESS (
|
|
|
- Instance->RegionBaseAddress,
|
|
|
- Lba,
|
|
|
- Instance->Media.BlockSize
|
|
|
- );
|
|
|
-
|
|
|
- // Put the device into Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- // Readout the data
|
|
|
- AlignedCopyMem (Buffer, (VOID *)StartAddress, BufferSizeInBytes);
|
|
|
-
|
|
|
- return EFI_SUCCESS;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashRead (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN EFI_LBA Lba,
|
|
|
- IN UINTN Offset,
|
|
|
- IN UINTN BufferSizeInBytes,
|
|
|
- OUT VOID *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- UINTN StartAddress;
|
|
|
-
|
|
|
- // The buffer must be valid
|
|
|
- if (Buffer == NULL) {
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- // Return if we have not any byte to read
|
|
|
- if (BufferSizeInBytes == 0) {
|
|
|
- return EFI_SUCCESS;
|
|
|
- }
|
|
|
-
|
|
|
- if (((Lba * Instance->Media.BlockSize) + Offset + BufferSizeInBytes) > Instance->Size) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashRead: ERROR - Read will exceed device size.\n"));
|
|
|
- return EFI_INVALID_PARAMETER;
|
|
|
- }
|
|
|
-
|
|
|
- // Get the address to start reading from
|
|
|
- StartAddress = GET_NOR_BLOCK_ADDRESS (
|
|
|
- Instance->RegionBaseAddress,
|
|
|
- Lba,
|
|
|
- Instance->Media.BlockSize
|
|
|
- );
|
|
|
-
|
|
|
- // Put the device into Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
-
|
|
|
- // Readout the data
|
|
|
- AlignedCopyMem (Buffer, (VOID *)(StartAddress + Offset), BufferSizeInBytes);
|
|
|
-
|
|
|
- return EFI_SUCCESS;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- Write a full or portion of a block. It must not span block boundaries; that is,
|
|
|
- Offset + *NumBytes <= Instance->Media.BlockSize.
|
|
|
-*/
|
|
|
-EFI_STATUS
|
|
|
-NorFlashWriteSingleBlock (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance,
|
|
|
- IN EFI_LBA Lba,
|
|
|
- IN UINTN Offset,
|
|
|
- IN OUT UINTN *NumBytes,
|
|
|
- IN UINT8 *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- EFI_STATUS TempStatus;
|
|
|
- UINT32 Tmp;
|
|
|
- UINT32 TmpBuf;
|
|
|
- UINT32 WordToWrite;
|
|
|
- UINT32 Mask;
|
|
|
- BOOLEAN DoErase;
|
|
|
- UINTN BytesToWrite;
|
|
|
- UINTN CurOffset;
|
|
|
- UINTN WordAddr;
|
|
|
- UINTN BlockSize;
|
|
|
- UINTN BlockAddress;
|
|
|
- UINTN PrevBlockAddress;
|
|
|
-
|
|
|
- PrevBlockAddress = 0;
|
|
|
-
|
|
|
- DEBUG ((DEBUG_BLKIO, "NorFlashWriteSingleBlock(Parameters: Lba=%ld, Offset=0x%x, *NumBytes=0x%x, Buffer @ 0x%08x)\n", Lba, Offset, *NumBytes, Buffer));
|
|
|
-
|
|
|
- // Detect WriteDisabled state
|
|
|
- if (Instance->Media.ReadOnly == TRUE) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleBlock: ERROR - Can not write: Device is in WriteDisabled state.\n"));
|
|
|
- // It is in WriteDisabled state, return an error right away
|
|
|
- return EFI_ACCESS_DENIED;
|
|
|
- }
|
|
|
-
|
|
|
- // Cache the block size to avoid de-referencing pointers all the time
|
|
|
- BlockSize = Instance->Media.BlockSize;
|
|
|
-
|
|
|
- // The write must not span block boundaries.
|
|
|
- // We need to check each variable individually because adding two large values together overflows.
|
|
|
- if ((Offset >= BlockSize) ||
|
|
|
- (*NumBytes > BlockSize) ||
|
|
|
- ((Offset + *NumBytes) > BlockSize))
|
|
|
- {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleBlock: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize));
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // We must have some bytes to write
|
|
|
- if (*NumBytes == 0) {
|
|
|
- DEBUG ((DEBUG_ERROR, "NorFlashWriteSingleBlock: ERROR - EFI_BAD_BUFFER_SIZE: (Offset=0x%x + NumBytes=0x%x) > BlockSize=0x%x\n", Offset, *NumBytes, BlockSize));
|
|
|
- return EFI_BAD_BUFFER_SIZE;
|
|
|
- }
|
|
|
-
|
|
|
- // Pick 128bytes as a good start for word operations as opposed to erasing the
|
|
|
- // block and writing the data regardless if an erase is really needed.
|
|
|
- // It looks like most individual NV variable writes are smaller than 128bytes.
|
|
|
- if (*NumBytes <= 128) {
|
|
|
- // Check to see if we need to erase before programming the data into NOR.
|
|
|
- // If the destination bits are only changing from 1s to 0s we can just write.
|
|
|
- // After a block is erased all bits in the block is set to 1.
|
|
|
- // If any byte requires us to erase we just give up and rewrite all of it.
|
|
|
- DoErase = FALSE;
|
|
|
- BytesToWrite = *NumBytes;
|
|
|
- CurOffset = Offset;
|
|
|
-
|
|
|
- while (BytesToWrite > 0) {
|
|
|
- // Read full word from NOR, splice as required. A word is the smallest
|
|
|
- // unit we can write.
|
|
|
- TempStatus = NorFlashRead (Instance, Lba, CurOffset & ~(0x3), sizeof (Tmp), &Tmp);
|
|
|
- if (EFI_ERROR (TempStatus)) {
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- // Physical address of word in NOR to write.
|
|
|
- WordAddr = (CurOffset & ~(0x3)) + GET_NOR_BLOCK_ADDRESS (
|
|
|
- Instance->RegionBaseAddress,
|
|
|
- Lba,
|
|
|
- BlockSize
|
|
|
- );
|
|
|
- // The word of data that is to be written.
|
|
|
- TmpBuf = *((UINT32 *)(Buffer + (*NumBytes - BytesToWrite)));
|
|
|
-
|
|
|
- // First do word aligned chunks.
|
|
|
- if ((CurOffset & 0x3) == 0) {
|
|
|
- if (BytesToWrite >= 4) {
|
|
|
- // Is the destination still in 'erased' state?
|
|
|
- if (~Tmp != 0) {
|
|
|
- // Check to see if we are only changing bits to zero.
|
|
|
- if ((Tmp ^ TmpBuf) & TmpBuf) {
|
|
|
- DoErase = TRUE;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Write this word to NOR
|
|
|
- WordToWrite = TmpBuf;
|
|
|
- CurOffset += sizeof (TmpBuf);
|
|
|
- BytesToWrite -= sizeof (TmpBuf);
|
|
|
- } else {
|
|
|
- // BytesToWrite < 4. Do small writes and left-overs
|
|
|
- Mask = ~((~0) << (BytesToWrite * 8));
|
|
|
- // Mask out the bytes we want.
|
|
|
- TmpBuf &= Mask;
|
|
|
- // Is the destination still in 'erased' state?
|
|
|
- if ((Tmp & Mask) != Mask) {
|
|
|
- // Check to see if we are only changing bits to zero.
|
|
|
- if ((Tmp ^ TmpBuf) & TmpBuf) {
|
|
|
- DoErase = TRUE;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Merge old and new data. Write merged word to NOR
|
|
|
- WordToWrite = (Tmp & ~Mask) | TmpBuf;
|
|
|
- CurOffset += BytesToWrite;
|
|
|
- BytesToWrite = 0;
|
|
|
- }
|
|
|
- } else {
|
|
|
- // Do multiple words, but starting unaligned.
|
|
|
- if (BytesToWrite > (4 - (CurOffset & 0x3))) {
|
|
|
- Mask = ((~0) << ((CurOffset & 0x3) * 8));
|
|
|
- // Mask out the bytes we want.
|
|
|
- TmpBuf &= Mask;
|
|
|
- // Is the destination still in 'erased' state?
|
|
|
- if ((Tmp & Mask) != Mask) {
|
|
|
- // Check to see if we are only changing bits to zero.
|
|
|
- if ((Tmp ^ TmpBuf) & TmpBuf) {
|
|
|
- DoErase = TRUE;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Merge old and new data. Write merged word to NOR
|
|
|
- WordToWrite = (Tmp & ~Mask) | TmpBuf;
|
|
|
- BytesToWrite -= (4 - (CurOffset & 0x3));
|
|
|
- CurOffset += (4 - (CurOffset & 0x3));
|
|
|
- } else {
|
|
|
- // Unaligned and fits in one word.
|
|
|
- Mask = (~((~0) << (BytesToWrite * 8))) << ((CurOffset & 0x3) * 8);
|
|
|
- // Mask out the bytes we want.
|
|
|
- TmpBuf = (TmpBuf << ((CurOffset & 0x3) * 8)) & Mask;
|
|
|
- // Is the destination still in 'erased' state?
|
|
|
- if ((Tmp & Mask) != Mask) {
|
|
|
- // Check to see if we are only changing bits to zero.
|
|
|
- if ((Tmp ^ TmpBuf) & TmpBuf) {
|
|
|
- DoErase = TRUE;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Merge old and new data. Write merged word to NOR
|
|
|
- WordToWrite = (Tmp & ~Mask) | TmpBuf;
|
|
|
- CurOffset += BytesToWrite;
|
|
|
- BytesToWrite = 0;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- //
|
|
|
- // Write the word to NOR.
|
|
|
- //
|
|
|
-
|
|
|
- BlockAddress = GET_NOR_BLOCK_ADDRESS (Instance->RegionBaseAddress, Lba, BlockSize);
|
|
|
- if (BlockAddress != PrevBlockAddress) {
|
|
|
- TempStatus = NorFlashUnlockSingleBlockIfNecessary (Instance, BlockAddress);
|
|
|
- if (EFI_ERROR (TempStatus)) {
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- PrevBlockAddress = BlockAddress;
|
|
|
- }
|
|
|
-
|
|
|
- TempStatus = NorFlashWriteSingleWord (Instance, WordAddr, WordToWrite);
|
|
|
- if (EFI_ERROR (TempStatus)) {
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Exit if we got here and could write all the data. Otherwise do the
|
|
|
- // Erase-Write cycle.
|
|
|
- if (!DoErase) {
|
|
|
- return EFI_SUCCESS;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Check we did get some memory. Buffer is BlockSize.
|
|
|
- if (Instance->ShadowBuffer == NULL) {
|
|
|
- DEBUG ((DEBUG_ERROR, "FvbWrite: ERROR - Buffer not ready\n"));
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- // Read NOR Flash data into shadow buffer
|
|
|
- TempStatus = NorFlashReadBlocks (Instance, Lba, BlockSize, Instance->ShadowBuffer);
|
|
|
- if (EFI_ERROR (TempStatus)) {
|
|
|
- // Return one of the pre-approved error statuses
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- // Put the data at the appropriate location inside the buffer area
|
|
|
- CopyMem ((VOID *)((UINTN)Instance->ShadowBuffer + Offset), Buffer, *NumBytes);
|
|
|
-
|
|
|
- // Write the modified buffer back to the NorFlash
|
|
|
- TempStatus = NorFlashWriteBlocks (Instance, Lba, BlockSize, Instance->ShadowBuffer);
|
|
|
- if (EFI_ERROR (TempStatus)) {
|
|
|
- // Return one of the pre-approved error statuses
|
|
|
- return EFI_DEVICE_ERROR;
|
|
|
- }
|
|
|
-
|
|
|
- return EFI_SUCCESS;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- Although DiskIoDxe will automatically install the DiskIO protocol whenever
|
|
|
- we install the BlockIO protocol, its implementation is sub-optimal as it reads
|
|
|
- and writes entire blocks using the BlockIO protocol. In fact we can access
|
|
|
- NOR flash with a finer granularity than that, so we can improve performance
|
|
|
- by directly producing the DiskIO protocol.
|
|
|
-*/
|
|
|
-
|
|
|
-/**
|
|
|
- Read BufferSize bytes from Offset into Buffer.
|
|
|
-
|
|
|
- @param This Protocol instance pointer.
|
|
|
- @param MediaId Id of the media, changes every time the media is replaced.
|
|
|
- @param Offset The starting byte offset to read from
|
|
|
- @param BufferSize Size of Buffer
|
|
|
- @param Buffer Buffer containing read data
|
|
|
-
|
|
|
- @retval EFI_SUCCESS The data was read correctly from the device.
|
|
|
- @retval EFI_DEVICE_ERROR The device reported an error while performing the read.
|
|
|
- @retval EFI_NO_MEDIA There is no media in the device.
|
|
|
- @retval EFI_MEDIA_CHANGED The MediaId does not match the current device.
|
|
|
- @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not
|
|
|
- valid for the device.
|
|
|
-
|
|
|
-**/
|
|
|
-EFI_STATUS
|
|
|
-EFIAPI
|
|
|
-NorFlashDiskIoReadDisk (
|
|
|
- IN EFI_DISK_IO_PROTOCOL *This,
|
|
|
- IN UINT32 MediaId,
|
|
|
- IN UINT64 DiskOffset,
|
|
|
- IN UINTN BufferSize,
|
|
|
- OUT VOID *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- NOR_FLASH_INSTANCE *Instance;
|
|
|
- UINT32 BlockSize;
|
|
|
- UINT32 BlockOffset;
|
|
|
- EFI_LBA Lba;
|
|
|
-
|
|
|
- Instance = INSTANCE_FROM_DISKIO_THIS (This);
|
|
|
-
|
|
|
- if (MediaId != Instance->Media.MediaId) {
|
|
|
- return EFI_MEDIA_CHANGED;
|
|
|
- }
|
|
|
-
|
|
|
- BlockSize = Instance->Media.BlockSize;
|
|
|
- Lba = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
|
|
|
-
|
|
|
- return NorFlashRead (Instance, Lba, BlockOffset, BufferSize, Buffer);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- Writes a specified number of bytes to a device.
|
|
|
-
|
|
|
- @param This Indicates a pointer to the calling context.
|
|
|
- @param MediaId ID of the medium to be written.
|
|
|
- @param Offset The starting byte offset on the logical block I/O device to write.
|
|
|
- @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.
|
|
|
- @param Buffer A pointer to the buffer containing the data to be written.
|
|
|
-
|
|
|
- @retval EFI_SUCCESS The data was written correctly to the device.
|
|
|
- @retval EFI_WRITE_PROTECTED The device can not be written to.
|
|
|
- @retval EFI_DEVICE_ERROR The device reported an error while performing the write.
|
|
|
- @retval EFI_NO_MEDIA There is no media in the device.
|
|
|
- @retval EFI_MEDIA_CHANGED The MediaId does not match the current device.
|
|
|
- @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not
|
|
|
- valid for the device.
|
|
|
-
|
|
|
-**/
|
|
|
-EFI_STATUS
|
|
|
-EFIAPI
|
|
|
-NorFlashDiskIoWriteDisk (
|
|
|
- IN EFI_DISK_IO_PROTOCOL *This,
|
|
|
- IN UINT32 MediaId,
|
|
|
- IN UINT64 DiskOffset,
|
|
|
- IN UINTN BufferSize,
|
|
|
- IN VOID *Buffer
|
|
|
- )
|
|
|
-{
|
|
|
- NOR_FLASH_INSTANCE *Instance;
|
|
|
- UINT32 BlockSize;
|
|
|
- UINT32 BlockOffset;
|
|
|
- EFI_LBA Lba;
|
|
|
- UINTN RemainingBytes;
|
|
|
- UINTN WriteSize;
|
|
|
- EFI_STATUS Status;
|
|
|
-
|
|
|
- Instance = INSTANCE_FROM_DISKIO_THIS (This);
|
|
|
-
|
|
|
- if (MediaId != Instance->Media.MediaId) {
|
|
|
- return EFI_MEDIA_CHANGED;
|
|
|
- }
|
|
|
-
|
|
|
- BlockSize = Instance->Media.BlockSize;
|
|
|
- Lba = (EFI_LBA)DivU64x32Remainder (DiskOffset, BlockSize, &BlockOffset);
|
|
|
-
|
|
|
- RemainingBytes = BufferSize;
|
|
|
-
|
|
|
- // Write either all the remaining bytes, or the number of bytes that bring
|
|
|
- // us up to a block boundary, whichever is less.
|
|
|
- // (DiskOffset | (BlockSize - 1)) + 1) rounds DiskOffset up to the next
|
|
|
- // block boundary (even if it is already on one).
|
|
|
- WriteSize = MIN (RemainingBytes, ((DiskOffset | (BlockSize - 1)) + 1) - DiskOffset);
|
|
|
-
|
|
|
- do {
|
|
|
- if (WriteSize == BlockSize) {
|
|
|
- // Write a full block
|
|
|
- Status = NorFlashWriteFullBlock (Instance, Lba, Buffer, BlockSize / sizeof (UINT32));
|
|
|
- } else {
|
|
|
- // Write a partial block
|
|
|
- Status = NorFlashWriteSingleBlock (Instance, Lba, BlockOffset, &WriteSize, Buffer);
|
|
|
- }
|
|
|
-
|
|
|
- if (EFI_ERROR (Status)) {
|
|
|
- return Status;
|
|
|
- }
|
|
|
-
|
|
|
- // Now continue writing either all the remaining bytes or single blocks.
|
|
|
- RemainingBytes -= WriteSize;
|
|
|
- Buffer = (UINT8 *)Buffer + WriteSize;
|
|
|
- Lba++;
|
|
|
- BlockOffset = 0;
|
|
|
- WriteSize = MIN (RemainingBytes, BlockSize);
|
|
|
- } while (RemainingBytes);
|
|
|
-
|
|
|
- return Status;
|
|
|
-}
|
|
|
-
|
|
|
-EFI_STATUS
|
|
|
-NorFlashReset (
|
|
|
- IN NOR_FLASH_INSTANCE *Instance
|
|
|
- )
|
|
|
-{
|
|
|
- // As there is no specific RESET to perform, ensure that the devices is in the default Read Array mode
|
|
|
- SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
|
|
|
- return EFI_SUCCESS;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- Fixup internal data so that EFI can be call in virtual mode.
|
|
|
- Call the passed in Child Notify event and convert any pointers in
|
|
|
- lib to virtual mode.
|
|
|
-
|
|
|
- @param[in] Event The Event that is being processed
|
|
|
- @param[in] Context Event Context
|
|
|
-**/
|
|
|
-VOID
|
|
|
-EFIAPI
|
|
|
-NorFlashVirtualNotifyEvent (
|
|
|
- IN EFI_EVENT Event,
|
|
|
- IN VOID *Context
|
|
|
- )
|
|
|
-{
|
|
|
- UINTN Index;
|
|
|
-
|
|
|
- for (Index = 0; Index < mNorFlashDeviceCount; Index++) {
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->DeviceBaseAddress);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->RegionBaseAddress);
|
|
|
-
|
|
|
- // Convert BlockIo protocol
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->BlockIoProtocol.FlushBlocks);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->BlockIoProtocol.ReadBlocks);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->BlockIoProtocol.Reset);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->BlockIoProtocol.WriteBlocks);
|
|
|
-
|
|
|
- // Convert Fvb
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.EraseBlocks);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.GetAttributes);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.GetBlockSize);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.GetPhysicalAddress);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.Read);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.SetAttributes);
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->FvbProtocol.Write);
|
|
|
-
|
|
|
- if (mNorFlashInstances[Index]->ShadowBuffer != NULL) {
|
|
|
- EfiConvertPointer (0x0, (VOID **)&mNorFlashInstances[Index]->ShadowBuffer);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return;
|
|
|
-}
|