diff options
Diffstat (limited to 'ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsImages.c')
| -rw-r--r-- | ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsImages.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsImages.c b/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsImages.c deleted file mode 100644 index 346c360292..0000000000 --- a/ArmPlatformPkg/FileSystem/BootMonFs/BootMonFsImages.c +++ /dev/null @@ -1,222 +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 <Library/IoLib.h>
-#include <Library/NorFlashPlatformLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-
-#include <Protocol/SimpleFileSystem.h>
-
-#include "BootMonFsInternal.h"
-
-UINT32
-BootMonFsChecksum (
- IN VOID *Data,
- IN UINT32 Size
- )
-{
- UINT32 *Ptr;
- UINT32 Word;
- UINT32 Checksum;
-
- ASSERT (Size % 4 == 0);
-
- Checksum = 0;
- Ptr = (UINT32*)Data;
-
- while (Size > 0) {
- Word = *Ptr++;
- Size -= 4;
-
- if (Word > ~Checksum) {
- Checksum++;
- }
-
- Checksum += Word;
- }
-
- return ~Checksum;
-}
-
-EFI_STATUS
-BootMonFsComputeFooterChecksum (
- IN OUT HW_IMAGE_DESCRIPTION *Footer
- )
-{
- HW_IMAGE_DESCRIPTION *Description;
- UINT32 Index;
-
- Footer->Attributes = 1;
-
- Description = AllocateZeroPool (sizeof (HW_IMAGE_DESCRIPTION));
- if (Description == NULL) {
- DEBUG ((DEBUG_ERROR, "BootMonFsComputeFooterChecksum: Unable to allocate memory.\n"));
- return EFI_OUT_OF_RESOURCES;
- }
-
- // Copy over to temporary shim
- CopyMem (Description, Footer, sizeof (HW_IMAGE_DESCRIPTION));
-
- // BootMon doesn't checksum the previous checksum
- Description->FooterChecksum = 0;
-
- // Blank out regions which aren't being used.
- for (Index = Footer->RegionCount; Index < HW_IMAGE_DESCRIPTION_REGION_MAX; Index++) {
- Description->Region[Index].Checksum = 0;
- Description->Region[Index].LoadAddress = 0;
- Description->Region[Index].Offset = 0;
- Description->Region[Index].Size = 0;
- }
-
- // Compute the checksum
- Footer->FooterChecksum = BootMonFsChecksum (Description, sizeof (HW_IMAGE_DESCRIPTION));
-
- FreePool (Description);
-
- return EFI_SUCCESS;
-}
-
-BOOLEAN
-BootMonFsIsImageValid (
- IN HW_IMAGE_DESCRIPTION *Desc,
- IN EFI_LBA Lba
- )
-{
- EFI_STATUS Status;
- HW_IMAGE_FOOTER *Footer;
- UINT32 Checksum;
-
- Footer = &Desc->Footer;
-
- // Check that the verification bytes are present
- if ((Footer->FooterSignature1 != HW_IMAGE_FOOTER_SIGNATURE_1) ||
- (Footer->FooterSignature2 != HW_IMAGE_FOOTER_SIGNATURE_2)) {
- return FALSE;
- }
-
- if (Footer->Version == HW_IMAGE_FOOTER_VERSION) {
- if (Footer->Offset != HW_IMAGE_FOOTER_OFFSET) {
- return FALSE;
- }
- } else if (Footer->Version == HW_IMAGE_FOOTER_VERSION2) {
- if (Footer->Offset != HW_IMAGE_FOOTER_OFFSET2) {
- return FALSE;
- }
- } else {
- return FALSE;
- }
-
- Checksum = Desc->FooterChecksum;
- Status = BootMonFsComputeFooterChecksum (Desc);
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "Warning: failed to compute checksum for image '%a'\n", Desc->Footer.Filename));
- }
-
- if (Desc->FooterChecksum != Checksum) {
- DEBUG ((DEBUG_ERROR, "Warning: image '%a' checksum mismatch.\n", Desc->Footer.Filename));
- }
-
- if ((Desc->BlockEnd != Lba) || (Desc->BlockStart > Desc->BlockEnd)) {
- return FALSE;
- }
-
- return TRUE;
-}
-
-STATIC
-EFI_STATUS
-BootMonFsDiscoverNextImage (
- IN BOOTMON_FS_INSTANCE *Instance,
- IN OUT EFI_LBA *LbaStart,
- IN OUT BOOTMON_FS_FILE *File
- )
-{
- EFI_DISK_IO_PROTOCOL *DiskIo;
- EFI_LBA CurrentLba;
- UINT64 DescOffset;
- EFI_STATUS Status;
-
- DiskIo = Instance->DiskIo;
-
- CurrentLba = *LbaStart;
-
- // Look for images in the rest of this block
- while (CurrentLba <= Instance->Media->LastBlock) {
- // Work out the byte offset into media of the image description in this block
- // If present, the image description is at the very end of the block.
- DescOffset = ((CurrentLba + 1) * Instance->Media->BlockSize) - sizeof (HW_IMAGE_DESCRIPTION);
-
- // Read the image description from media
- Status = DiskIo->ReadDisk (DiskIo,
- Instance->Media->MediaId,
- DescOffset,
- sizeof (HW_IMAGE_DESCRIPTION),
- &File->HwDescription
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- // If we found a valid image description...
- if (BootMonFsIsImageValid (&File->HwDescription, (CurrentLba - Instance->Media->LowestAlignedLba))) {
- DEBUG ((EFI_D_ERROR, "Found image: %a in block %d.\n",
- &(File->HwDescription.Footer.Filename),
- (UINTN)(CurrentLba - Instance->Media->LowestAlignedLba)
- ));
- File->HwDescAddress = DescOffset;
-
- *LbaStart = CurrentLba + 1;
- return EFI_SUCCESS;
- } else {
- CurrentLba++;
- }
- }
-
- *LbaStart = CurrentLba;
- return EFI_NOT_FOUND;
-}
-
-EFI_STATUS
-BootMonFsInitialize (
- IN BOOTMON_FS_INSTANCE *Instance
- )
-{
- EFI_STATUS Status;
- EFI_LBA Lba;
- UINT32 ImageCount;
- BOOTMON_FS_FILE *NewFile;
-
- ImageCount = 0;
- Lba = 0;
-
- while (1) {
- Status = BootMonFsCreateFile (Instance, &NewFile);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = BootMonFsDiscoverNextImage (Instance, &Lba, NewFile);
- if (EFI_ERROR (Status)) {
- // Free NewFile allocated by BootMonFsCreateFile ()
- FreePool (NewFile);
- break;
- }
- InsertTailList (&Instance->RootFile->Link, &NewFile->Link);
- ImageCount++;
- }
-
- Instance->Initialized = TRUE;
- return EFI_SUCCESS;
-}
|