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ArmPlatformPkg: Changed memory model for the stacks

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In the previous version, every cores had the same stack size.
To avoid to waste memory with secondary core stacks, the primary core stack
size is now different from the secondary cores stack size.

These are the Stack PCDs and their default values:

gArmPlatformTokenSpaceGuid.PcdCPUCoresSecStackBase|0
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecPrimaryStackSize|0x10000
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecSecondaryStackSize|0x1000

gArmPlatformTokenSpaceGuid.PcdCPUCoresSecMonStackBase|0
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecMonStackSize|0x1000

gArmPlatformTokenSpaceGuid.PcdCPUCoresStackBase|0
gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize|0x10000
gArmPlatformTokenSpaceGuid.PcdCPUCoreSecondaryStackSize|0x1000




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12415 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-09-22 23:05:20 +00:00
parent f156d5b49d
commit 2dbcb8f0a3
21 changed files with 451 additions and 213 deletions
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2
ArmPlatformPkg/PrePi/PrePi.c
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@@ -79,7 +79,6 @@ PrePiMain (
SaveAndSetDebugTimerInterrupt (TRUE);
UefiMemoryTop = UefiMemoryBase + FixedPcdGet32 (PcdSystemMemoryUefiRegionSize);
StacksSize = PcdGet32 (PcdCPUCoresNonSecStackSize) * PcdGet32 (PcdMPCoreMaxCores);
StacksBase = UefiMemoryTop - StacksSize;
// Check the PcdCPUCoresNonSecStackBase match with the calculated StackBase
@@ -99,6 +98,7 @@ PrePiMain (
ASSERT_EFI_ERROR (Status);
// Create the Stacks HOB (reserve the memory for all stacks)
StacksSize = PcdGet32 (PcdCPUCorePrimaryStackSize) + (FixedPcdGet32(PcdClusterCount) * 4 * FixedPcdGet32(PcdCPUCoreSecondaryStackSize));
BuildStackHob (StacksBase, StacksSize);
// Set the Boot Mode