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ArmPkg/BdsLib: Update the size of the Device Tree before booting Linux 

The memory reserved to load the device tree is over-allocated when
UEFI loads the blob to update the device tree with additional
information such as the command line, the initrd, etc.

This change ensures the total size declared by the device tree matches
the actual data (and not the over-allocated size value).

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@16517 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2014-12-12 19:15:37 +00:00 committed by oliviermartin
parent 061568e2d5
commit 85774874bc
1 changed files with 3 additions and 0 deletions
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3
ArmPkg/Library/BdsLib/BdsLinuxFdt.c
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@ -554,6 +554,9 @@ PrepareFdt (
// If we succeeded to generate the new Device Tree then free the old Device Tree
gBS->FreePages (*FdtBlobBase, EFI_SIZE_TO_PAGES (*FdtBlobSize));
// Update the real size of the Device Tree
fdt_pack ((VOID*)(UINTN)(NewFdtBlobBase));
*FdtBlobBase = NewFdtBlobBase;
*FdtBlobSize = (UINTN)fdt_totalsize ((VOID*)(UINTN)(NewFdtBlobBase));
return EFI_SUCCESS;