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| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-09-28 10:43:28 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-09-28 10:43:28 +0000 |
| commit | 695df8ba90dc01b6a4cd7d79e6d1a40e517186a6 (patch) | |
| tree | 8d97bd9f61e316d9fff7133e4d8dd14e04b80071 /ArmPlatformPkg/PrePi/ModuleEntryPoint.asm | |
| parent | 0a6653bc2aecaa621eb42c7137b6f13815a34a92 (diff) | |
| download | edk2-platforms-695df8ba90dc01b6a4cd7d79e6d1a40e517186a6.tar.xz | |
ArmPlatformPkg: Introduction of gArmPlatformTokenSpaceGuid.PcdCoreCount
On ARM PLatforms, there is no standard way to know how many cores are
available on the platform.
This PCD is expected to contain this number.
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13769 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/PrePi/ModuleEntryPoint.asm')
| -rw-r--r-- | ArmPlatformPkg/PrePi/ModuleEntryPoint.asm | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/ArmPlatformPkg/PrePi/ModuleEntryPoint.asm b/ArmPlatformPkg/PrePi/ModuleEntryPoint.asm index 0c7299a995..3437818b52 100644 --- a/ArmPlatformPkg/PrePi/ModuleEntryPoint.asm +++ b/ArmPlatformPkg/PrePi/ModuleEntryPoint.asm @@ -20,7 +20,8 @@ IMPORT CEntryPoint
IMPORT ArmReadMpidr
- IMPORT ArmIsMpCore
+ IMPORT ArmPlatformStackSet
+
EXPORT _ModuleEntryPoint
PRESERVE8
@@ -107,11 +108,20 @@ _GetStackBaseMpCore // r1 = The top of the Mpcore Stacks
// Stack for the primary core = PrimaryCoreStack
LoadConstantToReg (FixedPcdGet32(PcdCPUCorePrimaryStackSize), r2)
- sub r7, r1, r2
-
- // Stack for the secondary core = Number of Clusters * (4 Cores per cluster) * SecondaryStackSize
- LoadConstantToReg (FixedPcdGet32(PcdClusterCount), r2)
- lsl r2, r2, #2
+ sub r8, r1, r2
+
+ // Stack for the secondary core = Number of Cores - 1
+ LoadConstantToReg (FixedPcdGet32(PcdCoreCount), r0)
+ sub r0, r0, #1
+ LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecondaryStackSize), r1)
+ mul r1, r1, r0
+ sub r8, r8, r1
+
+ // r8 = The base of the MpCore Stacks (primary stack & secondary stacks)
+ mov r0, r8
+ mov r1, r6
+ //ArmPlatformStackSet(StackBase, MpId, PrimaryStackSize, SecondaryStackSize)
+ LoadConstantToReg (FixedPcdGet32(PcdCPUCorePrimaryStackSize), r2)
LoadConstantToReg (FixedPcdGet32(PcdCPUCoreSecondaryStackSize), r3)
mul r2, r2, r3
sub r7, r7, r2
|