ArmPlatformPkg: Changed memory model for the stacks
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
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@@ -77,5 +77,21 @@
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LoadConstantToRegMacro $Data, $Reg
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ldr $Reg, =($Data)
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MEND
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MACRO
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GetCorePositionInStack $Pos, $MpId, $Tmp
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lsr $Pos, $MpId, #6
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and $Tmp, $MpId, #3
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add $Pos, $Pos, $Tmp
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MEND
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; The reserved place must be 8-bytes aligned for pushing 64-bit variable on the stack
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MACRO
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SetPrimaryStack $StackTop, $GlobalSize, $Tmp
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and $Tmp, $GlobalSize, #7
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rsbne $Tmp, $Tmp, #8
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add $GlobalSize, $GlobalSize, $Tmp
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sub sp, $StackTop, $GlobalSize
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MEND
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END
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