diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-09-09 14:48:33 +0000 |
|---|---|---|
| committer | abiesheuvel <abiesheuvel@Edk2> | 2015-09-09 14:48:33 +0000 |
| commit | 72daeed8cfbbbf801c88412cf31cfef61ef59b6c (patch) | |
| tree | 096c6fac7c6d8c9de66fd9851d5ca5f8e8c0635f /ArmVirtPkg | |
| parent | 984ec7588d569cc35dcbdd3c45a86088c4366eeb (diff) | |
| download | edk2-platforms-72daeed8cfbbbf801c88412cf31cfef61ef59b6c.tar.xz | |
ArmVirtPkg/ArmVirtMemoryInitPeiLib: handle memory above 4 GB on 32-bit ARM
On 32-bit ARM, split system memory into a region below (and up to) 4 GB
and a region above 4 GB. This is necessary to get the DXE core to consider
the former as the resource descriptor that describes the primary memory
region that also covers the PHIT region.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18427 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmVirtPkg')
| -rw-r--r-- | ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c index 8ce63b4596..f6c6915284 100644 --- a/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c +++ b/ArmVirtPkg/Library/ArmVirtMemoryInitPeiLib/ArmVirtMemoryInitPeiLib.c @@ -56,6 +56,7 @@ MemoryPeim ( )
{
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
+ UINT64 SystemMemoryTop;
// Ensure PcdSystemMemorySize has been set
ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
@@ -73,12 +74,30 @@ MemoryPeim ( EFI_RESOURCE_ATTRIBUTE_TESTED
);
- BuildResourceDescriptorHob (
- EFI_RESOURCE_SYSTEM_MEMORY,
- ResourceAttributes,
- PcdGet64 (PcdSystemMemoryBase),
- PcdGet64 (PcdSystemMemorySize)
- );
+ SystemMemoryTop = PcdGet64 (PcdSystemMemoryBase) +
+ PcdGet64 (PcdSystemMemorySize);
+
+ if (SystemMemoryTop - 1 > MAX_ADDRESS) {
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ PcdGet64 (PcdSystemMemoryBase),
+ (UINT64)MAX_ADDRESS - PcdGet64 (PcdSystemMemoryBase) + 1
+ );
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ (UINT64)MAX_ADDRESS + 1,
+ SystemMemoryTop - MAX_ADDRESS - 1
+ );
+ } else {
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ PcdGet64 (PcdSystemMemoryBase),
+ PcdGet64 (PcdSystemMemorySize)
+ );
+ }
//
// When running under virtualization, the PI/UEFI memory region may be
|