diff options
| author | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-04-18 03:09:54 +0000 |
|---|---|---|
| committer | klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-04-18 03:09:54 +0000 |
| commit | 9071550e8697ed9df3d24b369bd30e3f0e190d1f (patch) | |
| tree | ae93a60e5311a6864330e72daee092255a2e64fb /DuetPkg/FvbRuntimeService/FileIo.c | |
| parent | 25ab7ab110193a0b5fc468fd3839acb8ae4d93df (diff) | |
| download | edk2-platforms-9071550e8697ed9df3d24b369bd30e3f0e190d1f.tar.xz | |
Add missing module for duet package.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5088 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'DuetPkg/FvbRuntimeService/FileIo.c')
| -rw-r--r-- | DuetPkg/FvbRuntimeService/FileIo.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/DuetPkg/FvbRuntimeService/FileIo.c b/DuetPkg/FvbRuntimeService/FileIo.c new file mode 100644 index 0000000000..0162b15b19 --- /dev/null +++ b/DuetPkg/FvbRuntimeService/FileIo.c @@ -0,0 +1,210 @@ +/**@file
+Copyright (c) 2007, Intel Corporation
+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.
+
+Module Name:
+
+ FileIo.c
+
+Abstract:
+
+ File operation for Firmware volume block driver
+
+**/
+#include "FileIo.h"
+
+//
+// Variable storage hot plug is supported but there are still some restrictions:
+// After plugging the storage back,
+// 1. Still use memory as NV if newly plugged storage is not same as the original one
+// 2. Still use memory as NV if there are some update operation during storage is unplugged.
+//
+
+
+EFI_STATUS
+FileWrite (
+ IN EFI_FILE *File,
+ IN UINTN Offset,
+ IN UINTN Buffer,
+ IN UINTN Size
+ )
+{
+ EFI_STATUS Status;
+
+ Status = File->SetPosition (File, Offset);
+ ASSERT_EFI_ERROR (Status);
+ if (!EFI_ERROR (Status)) {
+ Status = File->Write (File, &Size, (VOID *) Buffer);
+ ASSERT_EFI_ERROR (Status);
+ }
+ return Status;
+}
+
+EFI_STATUS
+CheckStore (
+ IN EFI_HANDLE SimpleFileSystemHandle,
+ IN UINT32 VolumeId,
+ OUT EFI_DEVICE_PATH_PROTOCOL **Device
+ )
+{
+#define BLOCK_SIZE 0x200
+#define FAT16_VOLUME_ID_OFFSET 39
+#define FAT32_VOLUME_ID_OFFSET 67
+ EFI_STATUS Status;
+ EFI_BLOCK_IO_PROTOCOL *BlkIo;
+ UINT8 BootSector[BLOCK_SIZE];
+
+ *Device = NULL;
+ Status = gBS->HandleProtocol (
+ SimpleFileSystemHandle,
+ &gEfiBlockIoProtocolGuid, // BlockIo should be supported if it supports SimpleFileSystem
+ (VOID*)&BlkIo
+ );
+
+ if (EFI_ERROR (Status)) {
+ goto ErrHandle;
+ }
+ if (!BlkIo->Media->MediaPresent) {
+ DEBUG ((EFI_D_ERROR, "FwhMappedFile: Media not present!\n"));
+ Status = EFI_NO_MEDIA;
+ goto ErrHandle;
+ }
+ if (BlkIo->Media->ReadOnly) {
+ DEBUG ((EFI_D_ERROR, "FwhMappedFile: Media is read-only!\n"));
+ Status = EFI_ACCESS_DENIED;
+ goto ErrHandle;
+ }
+
+ Status = BlkIo->ReadBlocks(
+ BlkIo,
+ BlkIo->Media->MediaId,
+ 0,
+ BLOCK_SIZE,
+ BootSector
+ );
+ ASSERT_EFI_ERROR (Status);
+ if ((*(UINT32 *) &BootSector[FAT16_VOLUME_ID_OFFSET] != VolumeId) &&
+ (*(UINT32 *) &BootSector[FAT32_VOLUME_ID_OFFSET] != VolumeId)
+ ) {
+ Status = EFI_NOT_FOUND;
+ goto ErrHandle;
+ }
+
+ *Device = DuplicateDevicePath (DevicePathFromHandle (SimpleFileSystemHandle));
+ ASSERT (*Device != NULL);
+
+ErrHandle:
+ return Status;
+}
+
+EFI_STATUS
+CheckStoreExists (
+ IN EFI_DEVICE_PATH_PROTOCOL *Device
+ )
+{
+ EFI_HANDLE Handle;
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
+ EFI_STATUS Status;
+
+ Status = gBS->LocateDevicePath (
+ &gEfiSimpleFileSystemProtocolGuid,
+ &Device,
+ &Handle
+ );
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->HandleProtocol (
+ Handle,
+ &gEfiSimpleFileSystemProtocolGuid,
+ &Volume
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ return EFI_SUCCESS;
+}
+
+VOID
+FileClose (
+ IN EFI_FILE *File
+ )
+{
+ File->Flush (File);
+ File->Close (File);
+}
+EFI_STATUS
+FileOpen (
+ IN EFI_DEVICE_PATH_PROTOCOL *Device,
+ IN CHAR16 *MappedFile,
+ OUT EFI_FILE **File,
+ IN UINT64 OpenMode
+ )
+{
+ EFI_HANDLE Handle;
+ EFI_FILE_HANDLE Root;
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
+ EFI_STATUS Status;
+
+ *File = NULL;
+
+ Status = gBS->LocateDevicePath (
+ &gEfiSimpleFileSystemProtocolGuid,
+ &Device,
+ &Handle
+ );
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->HandleProtocol (
+ Handle,
+ &gEfiSimpleFileSystemProtocolGuid,
+ &Volume
+ );
+ ASSERT_EFI_ERROR (Status);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ //
+ // Open the root directory of the volume
+ //
+ Root = NULL;
+ Status = Volume->OpenVolume (
+ Volume,
+ &Root
+ );
+ ASSERT_EFI_ERROR (Status);
+ ASSERT (Root != NULL);
+
+ //
+ // Open file
+ //
+ Status = Root->Open (
+ Root,
+ File,
+ MappedFile,
+ OpenMode,
+ 0
+ );
+ if (EFI_ERROR (Status)) {
+ *File = NULL;
+ }
+
+ //
+ // Close the Root directory
+ //
+ Root->Close (Root);
+ return Status;
+}
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