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Huang Jin
3009428255
When InitFileSystem() API is given EnumFileSystemTypeFat in argument, the FAT file system is not initialized. This bug is discovered when firmware update payload fails to load capsule from FAT partition via shell interface. Fixed #62 TEST=Created FwuImage.bin and perform firmware update from SBL shell on UP2 board. Verified successful update and booting to Ubuntu 16.04 from eMMC Signed-off-by: Huang Jin <huang.jin@intel.com>
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/** @file
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File system level API library interface
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Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiPei.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/FileSystemLib.h>
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#include <Library/PcdLib.h>
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OS_FILE_SYSTEM_TYPE mCurrentFsType = EnumFileSystemMax;
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FILE_SYSTEM_FUNC mFileSystemFuncs[EnumFileSystemTypeAuto];
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/**
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Loads file into memory by its name.
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@param[in] FsHandle FAT file system handle.
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@param[in] FileName The file name to get.
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@param[out] FileBufferPtr Allocated file buffer pointer.
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@param[out] FileSize Pointer to file buffer size.
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@retval EFI_SUCCESS The file was loaded correctly.
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@retval EFI_INVALID_PARAMETER Parameter is not valid.
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@retval EFI_DEVICE_ERROR A device error occurred.
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@retval EFI_NOT_FOUND A requested file cannot be found.
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@retval EFI_OUT_OF_RESOURCES Insufficant memory resource pool.
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@retval EFI_BUFFER_TOO_SMALL Buffer size is too small.
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**/
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EFI_STATUS
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EFIAPI
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GetFileByName (
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IN EFI_HANDLE FsHandle,
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IN CHAR16 *FileName,
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OUT VOID **FileBuffer,
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OUT UINTN *FileSize
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)
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{
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if (mCurrentFsType >= EnumFileSystemTypeAuto) {
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return EFI_NOT_READY;
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}
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if (mFileSystemFuncs[mCurrentFsType].GetFileByName == NULL) {
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return EFI_UNSUPPORTED;
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}
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return mFileSystemFuncs[mCurrentFsType].GetFileByName (FsHandle, FileName, FileBuffer, FileSize);
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}
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/**
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Initialize file systems.
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@param[in] SwPart Software partition index.
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@param[in] FsType Filesystem type.
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@param[in] PartHandle Partition handle.
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@param[out] FsHandle FAT file system handle.
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@retval EFI_SUCCESS The file system was initialized successfully.
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@retval EFI_INVALID_PARAMETER Parameter is not valid.
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@retval EFI_NOT_FOUND FAT file system was not detected on this partition.
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@retval EFI_OUT_OF_RESOURCES Insufficant memory resource pool.
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**/
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EFI_STATUS
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EFIAPI
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InitFileSystem (
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IN UINT32 SwPart,
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IN UINT32 FsType,
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IN EFI_HANDLE PartHandle,
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OUT EFI_HANDLE *FsHandle
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)
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{
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EFI_STATUS Status;
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UINT32 Type;
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Status = EFI_INVALID_PARAMETER;
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if (FsType >= EnumFileSystemMax) {
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return Status;
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}
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if (mCurrentFsType == EnumFileSystemMax) {
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Type = EnumFileSystemTypeFat;
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if (FixedPcdGet32 (PcdSupportedFileSystemMask) & (1 << Type)) {
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mFileSystemFuncs[Type].InitFileSystem = FatInitFileSystem;
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mFileSystemFuncs[Type].GetFileByName = FatGetFileByName;
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}
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Type = EnumFileSystemTypeExt2;
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if (FixedPcdGet32 (PcdSupportedFileSystemMask) & (1 << Type)) {
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mFileSystemFuncs[Type].InitFileSystem = ExtInitFileSystem;
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mFileSystemFuncs[Type].GetFileByName = ExtGetFileByName;
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}
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mCurrentFsType = EnumFileSystemTypeAuto;
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}
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for (Type = EnumFileSystemTypeFat; Type < EnumFileSystemTypeAuto; Type++) {
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if (mFileSystemFuncs[Type].InitFileSystem == NULL) {
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continue;
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}
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if ((FsType == EnumFileSystemTypeAuto) || (FsType == Type)) {
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Status = mFileSystemFuncs[Type].InitFileSystem (SwPart, PartHandle, FsHandle);
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if (!EFI_ERROR (Status)) {
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mCurrentFsType = Type;
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break;
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}
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}
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}
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return Status;
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}
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