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| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-07-06 16:27:21 +0000 |
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| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-07-06 16:27:21 +0000 |
| commit | d269095b712ba45fd4aca55331b5e6f3045ce1ad (patch) | |
| tree | 45ee937196347b33f6eeddf11cd3fa29c431a1f0 /ArmPlatformPkg/ArmPlatformPkg.dec | |
| parent | a6caee65ac3bba2ac649f20bf1c63f0a87050f17 (diff) | |
| download | edk2-d269095b712ba45fd4aca55331b5e6f3045ce1ad.zip edk2-d269095b712ba45fd4aca55331b5e6f3045ce1ad.tar.gz edk2-d269095b712ba45fd4aca55331b5e6f3045ce1ad.tar.bz2 | |
ArmPlatformPkg: Change the memory model for the ARM Platform components
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
Diffstat (limited to 'ArmPlatformPkg/ArmPlatformPkg.dec')
| -rw-r--r-- | ArmPlatformPkg/ArmPlatformPkg.dec | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/ArmPlatformPkg/ArmPlatformPkg.dec b/ArmPlatformPkg/ArmPlatformPkg.dec index 898dcc1..a8c412a 100644 --- a/ArmPlatformPkg/ArmPlatformPkg.dec +++ b/ArmPlatformPkg/ArmPlatformPkg.dec @@ -51,6 +51,7 @@ # These PCDs should be FeaturePcds. But we used these PCDs as an '#if' in an ASM file. # Using a FeaturePcd make a '(BOOLEAN) casting for its value which is not understood by the preprocessor. gArmPlatformTokenSpaceGuid.PcdMPCoreSupport|0|UINT32|0x00000003 + gArmPlatformTokenSpaceGuid.PcdMPCoreMaxCores|1|UINT32|0x0000002D # Stack for CPU Cores in Secure Mode gArmPlatformTokenSpaceGuid.PcdCPUCoresSecStackBase|0|UINT32|0x00000005 @@ -67,9 +68,6 @@ # Size of the region used by UEFI in permanent memory (Reserved 128MB by default) gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x08000000|UINT32|0x00000015 - # Size of the region reserved for fixed address allocations (Reserved 128MB by default) - gArmPlatformTokenSpaceGuid.PcdSystemMemoryFixRegionSize|0x08000000|UINT32|0x00000014 - # Size to reserve in the primary core stack for PEI Global Variables # = sizeof(UINTN) /* PcdPeiServicePtr or HobListPtr */ gArmPlatformTokenSpaceGuid.PcdPeiGlobalVariableSize|0x4|UINT32|0x00000016 |