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ArmPkg/BdsLib/Arm: Check Linux image and parameters are not overlapping 

Check Linux image and parameters are not overlapping with each other.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16013 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2014-09-01 13:24:01 +00:00 committed by oliviermartin
parent 5779aaafe9
commit e754c233a1
1 changed files with 8 additions and 2 deletions
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10
ArmPkg/Library/BdsLib/Arm/BdsLinuxLoader.c
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@ -1,6 +1,6 @@
/** @file
*
* Copyright (c) 2011-2012, ARM Limited. All rights reserved.
* Copyright (c) 2011-2014, 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
@ -17,6 +17,9 @@
#define ALIGN32_BELOW(addr) ALIGN_POINTER(addr - 32,32)
#define IS_ADDRESS_IN_REGION(RegionStart, RegionSize, Address) \
(((UINTN)(RegionStart) <= (UINTN)(Address)) && ((UINTN)(Address) <= ((UINTN)(RegionStart) + (UINTN)(RegionSize))))
STATIC
EFI_STATUS
PreparePlatformHardware (
@ -91,7 +94,10 @@ StartLinux (
LinuxImageSize -= 64;
}
//TODO: Check there is no overlapping between kernel and Atag
// Check there is no overlapping between kernel and its parameters
// We can only assert because it is too late to fallback to UEFI (ExitBootServices has been called).
ASSERT (!IS_ADDRESS_IN_REGION(LinuxKernel, LinuxImageSize, KernelParamsAddress) &&
!IS_ADDRESS_IN_REGION(LinuxKernel, LinuxImageSize, KernelParamsAddress + KernelParamsSize));
//
// Switch off interrupts, caches, mmu, etc