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ArmVirtPkg/XenRelocatablePlatformLib: rewrite DTB memory node retrieval in C

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Parsing the DTB early on using a handcoded assembly routine is a pointless
waste of brain cycles, since the UEFI firmware always executes from RAM
under Xen. So instead, set up a temporary stack in the memory region at the
beginning of the image, and use the libfdt C library.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19330 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel
2015-12-17 17:11:07 +00:00
committed by abiesheuvel
parent ce44ee32d3
commit 03b6bed17e
4 changed files with 113 additions and 269 deletions
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3
ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ArmXenRelocatablePlatformLib.inf
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@@ -32,14 +32,15 @@
IoLib
ArmLib
PrintLib
FdtLib
[Sources.common]
RelocatableVirt.c
XenVirtMem.c
FdtParser.c
[Sources.AARCH64]
AARCH64/RelocatableVirtHelper.S
AARCH64/MemnodeParser.S
[FeaturePcd]
gEmbeddedTokenSpaceGuid.PcdCacheEnable