diff options
Diffstat (limited to 'ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c')
| -rw-r--r-- | ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c b/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c deleted file mode 100644 index f8124e95ac..0000000000 --- a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsReadWrite.c +++ /dev/null @@ -1,259 +0,0 @@ -/** @file
-*
-* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
-*
-* This program and the accompanying materials
-* are licensed and made available under the terms and conditions of the BSD License
-* which accompanies this distribution. The full text of the license may be found at
-* http://opensource.org/licenses/bsd-license.php
-*
-* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-*
-**/
-
-#include <Protocol/SimpleFileSystem.h>
-#include <Library/UefiLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/DebugLib.h>
-
-#include "BootMonFsInternal.h"
-
-/**
- Read data from an open file.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
- is the file handle to read data from.
- @param[in out] BufferSize On input, the size of the Buffer. On output, the
- amount of data returned in Buffer. In both cases,
- the size is measured in bytes.
- @param[out] Buffer The buffer into which the data is read.
-
- @retval EFI_SUCCESS The data was read.
- @retval EFI_DEVICE_ERROR On entry, the current file position is
- beyond the end of the file, or the device
- reported an error while performing the read
- operation.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsReadFile (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- )
-{
- BOOTMON_FS_INSTANCE *Instance;
- BOOTMON_FS_FILE *File;
- EFI_DISK_IO_PROTOCOL *DiskIo;
- EFI_BLOCK_IO_MEDIA *Media;
- UINT64 FileStart;
- EFI_STATUS Status;
- UINTN RemainingFileSize;
-
- if ((This == NULL) ||
- (BufferSize == NULL) ||
- (Buffer == NULL) ) {
- return EFI_INVALID_PARAMETER;
- }
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- // Ensure the file has been written in Flash before reading it.
- // This keeps the code simple and avoids having to manage a non-flushed file.
- BootMonFsFlushFile (This);
-
- Instance = File->Instance;
- DiskIo = Instance->DiskIo;
- Media = Instance->Media;
- FileStart = (Media->LowestAlignedLba + File->HwDescription.BlockStart) * Media->BlockSize;
-
- if (File->Position >= File->Info->FileSize) {
- // The entire file has been read or the position has been
- // set past the end of the file.
- *BufferSize = 0;
- if (File->Position > File->Info->FileSize) {
- return EFI_DEVICE_ERROR;
- } else {
- return EFI_SUCCESS;
- }
- }
-
- // This driver assumes that the entire file is in region 0.
- RemainingFileSize = File->Info->FileSize - File->Position;
-
- // If read would go past end of file, truncate the read
- if (*BufferSize > RemainingFileSize) {
- *BufferSize = RemainingFileSize;
- }
-
- Status = DiskIo->ReadDisk (
- DiskIo,
- Media->MediaId,
- FileStart + File->Position,
- *BufferSize,
- Buffer
- );
- if (EFI_ERROR (Status)) {
- *BufferSize = 0;
- }
-
- File->Position += *BufferSize;
-
- return Status;
-}
-
-/**
- Write data to an open file.
-
- The data is not written to the flash yet. It will be written when the file
- will be either read, closed or flushed.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that
- is the file handle to write data to.
- @param[in out] BufferSize On input, the size of the Buffer. On output, the
- size of the data actually written. In both cases,
- the size is measured in bytes.
- @param[in] Buffer The buffer of data to write.
-
- @retval EFI_SUCCESS The data was written.
- @retval EFI_ACCESS_DENIED The file was opened read only.
- @retval EFI_OUT_OF_RESOURCES Unable to allocate the buffer to store the
- data to write.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsWriteFile (
- IN EFI_FILE_PROTOCOL *This,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- )
-{
- BOOTMON_FS_FILE *File;
- BOOTMON_FS_FILE_REGION *Region;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (File->OpenMode == EFI_FILE_MODE_READ) {
- return EFI_ACCESS_DENIED;
- }
-
- // Allocate and initialize the memory region
- Region = (BOOTMON_FS_FILE_REGION*)AllocateZeroPool (sizeof (BOOTMON_FS_FILE_REGION));
- if (Region == NULL) {
- *BufferSize = 0;
- return EFI_OUT_OF_RESOURCES;
- }
-
- Region->Buffer = AllocateCopyPool (*BufferSize, Buffer);
- if (Region->Buffer == NULL) {
- *BufferSize = 0;
- FreePool (Region);
- return EFI_OUT_OF_RESOURCES;
- }
-
- Region->Size = *BufferSize;
- Region->Offset = File->Position;
-
- InsertTailList (&File->RegionToFlushLink, &Region->Link);
-
- File->Position += *BufferSize;
-
- if (File->Position > File->Info->FileSize) {
- File->Info->FileSize = File->Position;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Set a file's current position.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is
- the file handle to set the requested position on.
- @param[in] Position The byte position from the start of the file to set.
-
- @retval EFI_SUCCESS The position was set.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsSetPosition (
- IN EFI_FILE_PROTOCOL *This,
- IN UINT64 Position
- )
-{
- BOOTMON_FS_FILE *File;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // UEFI Spec section 12.5:
- // "Seeking to position 0xFFFFFFFFFFFFFFFF causes the current position to
- // be set to the end of the file."
- //
- if (Position == 0xFFFFFFFFFFFFFFFF) {
- Position = File->Info->FileSize;
- }
-
- File->Position = Position;
-
- return EFI_SUCCESS;
-}
-
-/**
- Return a file's current position.
-
- @param[in] This A pointer to the EFI_FILE_PROTOCOL instance that is
- the file handle to get the current position on.
- @param[out] Position The address to return the file's current position value.
-
- @retval EFI_SUCCESS The position was returned.
- @retval EFI_INVALID_PARAMETER At least one of the parameters is invalid.
-
-**/
-EFIAPI
-EFI_STATUS
-BootMonFsGetPosition (
- IN EFI_FILE_PROTOCOL *This,
- OUT UINT64 *Position
- )
-{
- BOOTMON_FS_FILE *File;
-
- if (This == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- File = BOOTMON_FS_FILE_FROM_FILE_THIS (This);
- if (File->Info == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Position == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- *Position = File->Position;
-
- return EFI_SUCCESS;
-}
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