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