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ArmVirtualizationPkg: allow patchable PCD for device tree base address 

To allow a runtime self relocating PrePi instance to discover the base
address of the device tree at runtime, allow the use of a patchable PCD
for gArmVirtualizationTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress.
We will not be using the build time patch tool in this case, but using
a patchable PCD will make the build system aware that its value is not
a compile time constant.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16957 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2015-02-28 20:25:38 +00:00 committed by lersek
parent 7b70dabbb2
commit ada518b7d6
2 changed files with 2 additions and 2 deletions
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2
ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationPkg.dec
View File

@ -34,7 +34,7 @@
gArmVirtualizationTokenSpaceGuid = { 0x0B6F5CA7, 0x4F53, 0x445A, { 0xB7, 0x6E, 0x2E, 0x36, 0x5B, 0x80, 0x63, 0x66 } } gArmVirtualizationTokenSpaceGuid = { 0x0B6F5CA7, 0x4F53, 0x445A, { 0xB7, 0x6E, 0x2E, 0x36, 0x5B, 0x80, 0x63, 0x66 } }
gEarlyPL011BaseAddressGuid = { 0xB199DEA9, 0xFD5C, 0x4A84, { 0x80, 0x82, 0x2F, 0x41, 0x70, 0x78, 0x03, 0x05 } } gEarlyPL011BaseAddressGuid = { 0xB199DEA9, 0xFD5C, 0x4A84, { 0x80, 0x82, 0x2F, 0x41, 0x70, 0x78, 0x03, 0x05 } }
[PcdsFixedAtBuild] [PcdsFixedAtBuild, PcdsPatchableInModule]
# #
# This is the physical address where the device tree is expected to be stored # This is the physical address where the device tree is expected to be stored
# upon first entry into UEFI. This needs to be a FixedAtBuild PCD, so that we # upon first entry into UEFI. This needs to be a FixedAtBuild PCD, so that we

2
ArmPlatformPkg/ArmVirtualizationPkg/Library/ArmVirtualizationPlatformLib/Virt.c
View File

@ -96,7 +96,7 @@ ArmPlatformInitializeSystemMemory (
ASSERT (HobData != NULL); ASSERT (HobData != NULL);
*HobData = 0; *HobData = 0;
DeviceTreeBase = (VOID *)(UINTN)FixedPcdGet64 (PcdDeviceTreeInitialBaseAddress); DeviceTreeBase = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
ASSERT (DeviceTreeBase != NULL); ASSERT (DeviceTreeBase != NULL);
// //