sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ArmPlatformPkg: Change the memory model for the ARM Platform components

Browse Source 
In the former memory model, the UEFI firmware was expected to be located
at the top of the system memory. Stacks & Pi memory regions were set below
the firmware.
On some platform, the UEFI firmware could be shadowed by the ROM firmware
(case of the BeagleBoard) and in some cases the firmware is copied at the
beginning of the system memory.

With this new memory model, stack and Pi/DXE memory regions are set at the
top of the system memory wherever the UEFI firmware is located in the memory
map.
Because DXE core does not support shadowed firmwares, the system memory covered
by the UEFI firmware is marked as 'Non Present' to avoid to be overlapped by
DXE allocations.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11992 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-07-06 16:27:21 +00:00
parent a6caee65ac
commit d269095b71
16 changed files with 413 additions and 359 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.inf
View File

@@ -45,14 +45,11 @@
gEmbeddedTokenSpaceGuid.PcdPrePiProduceMemoryTypeInformationHob
[FixedPcd]
gArmPlatformTokenSpaceGuid.PcdStandalone
gArmTokenSpaceGuid.PcdNormalFdBaseAddress
gArmTokenSpaceGuid.PcdNormalFdSize
gArmTokenSpaceGuid.PcdSystemMemoryBase
gArmTokenSpaceGuid.PcdSystemMemorySize
gArmPlatformTokenSpaceGuid.PcdSystemMemoryFixRegionSize
gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize
gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory