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ArmPkg/BdsLib: Added support to start uImage 

Detect if there is a u-boot header (by checking the signature) and skip it.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12993 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin 2012-02-09 15:23:58 +00:00
parent d40002bab9
commit 995d9676c8
2 changed files with 11 additions and 3 deletions
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10
ArmPkg/Library/BdsLib/BdsLinuxLoader.c
View File

@ -1,6 +1,6 @@
/** @file
*
* Copyright (c) 2011, ARM Limited. All rights reserved.
* Copyright (c) 2011-2012, 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
@ -75,6 +75,12 @@ StartLinux (
LinuxKernel = (LINUX_KERNEL)(UINTN)LinuxImage;
}
// Check if the Linux Image is a uImage
if (*(UINT32*)LinuxKernel == LINUX_UIMAGE_SIGNATURE) {
// Assume the Image Entry Point is just after the uImage header (64-byte size)
LinuxKernel = (LINUX_KERNEL)((UINTN)LinuxKernel + 64);
}
//TODO: Check there is no overlapping between kernel and Atag
//
@ -96,7 +102,7 @@ StartLinux (
// Outside BootServices, so can't use Print();
DEBUG((EFI_D_ERROR, "\nStarting the kernel:\n\n"));
// jump to kernel with register set
// Jump to kernel with register set
LinuxKernel ((UINTN)0, MachineType, (UINTN)KernelParamsAddress);
// Kernel should never exit

4
ArmPkg/Library/BdsLib/BdsLinuxLoader.h
View File

@ -1,6 +1,6 @@
/** @file
*
* Copyright (c) 2011, ARM Limited. All rights reserved.
* Copyright (c) 2011-2012, 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
@ -15,6 +15,8 @@
#ifndef __BDSLINUXLOADER_H
#define __BDSLINUXLOADER_H
#define LINUX_UIMAGE_SIGNATURE 0x56190527
#define LINUX_ATAG_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxAtagMaxOffset))
#define LINUX_KERNEL_MAX_OFFSET (PcdGet32(PcdSystemMemoryBase) + PcdGet32(PcdArmLinuxKernelMaxOffset))