/** @file | |
Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include "AndroidFastbootApp.h" | |
// Find the kernel and ramdisk in an Android boot.img. | |
// return EFI_INVALID_PARAMETER if the boot.img is invalid (i.e. doesn't have the | |
// right magic value), | |
// return EFI_NOT_FOUND if there was no kernel in the boot.img. | |
// Note that the Ramdisk is optional - *Ramdisk won't be touched if it isn't | |
// present, but RamdiskSize will be set to 0. | |
EFI_STATUS | |
ParseAndroidBootImg ( | |
IN VOID *BootImg, | |
OUT VOID **Kernel, | |
OUT UINTN *KernelSize, | |
OUT VOID **Ramdisk, | |
OUT UINTN *RamdiskSize, | |
OUT CHAR8 *KernelArgs | |
) | |
{ | |
ANDROID_BOOTIMG_HEADER *Header; | |
UINT8 *BootImgBytePtr; | |
// Cast to UINT8 so we can do pointer arithmetic | |
BootImgBytePtr = (UINT8 *)BootImg; | |
Header = (ANDROID_BOOTIMG_HEADER *)BootImg; | |
if (AsciiStrnCmp ( | |
(CONST CHAR8 *)Header->BootMagic, | |
ANDROID_BOOT_MAGIC, | |
ANDROID_BOOT_MAGIC_LENGTH | |
) != 0) | |
{ | |
return EFI_INVALID_PARAMETER; | |
} | |
if (Header->KernelSize == 0) { | |
return EFI_NOT_FOUND; | |
} | |
ASSERT (IS_VALID_ANDROID_PAGE_SIZE (Header->PageSize)); | |
*KernelSize = Header->KernelSize; | |
*Kernel = BootImgBytePtr + Header->PageSize; | |
*RamdiskSize = Header->RamdiskSize; | |
if (Header->RamdiskSize != 0) { | |
*Ramdisk = (VOID *)(BootImgBytePtr | |
+ Header->PageSize | |
+ ALIGN_VALUE (Header->KernelSize, Header->PageSize)); | |
} | |
AsciiStrnCpyS ( | |
KernelArgs, | |
ANDROID_BOOTIMG_KERNEL_ARGS_SIZE, | |
Header->KernelArgs, | |
ANDROID_BOOTIMG_KERNEL_ARGS_SIZE | |
); | |
return EFI_SUCCESS; | |
} |