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ArmPlatformPkg: Introduce Primary core macros

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On MpCore system, the primary core can now be any core of the system.

To identify the primary core, you can use 'gArmTokenSpaceGuid.PcdArmPrimaryCoreMask'
and 'gArmTokenSpaceGuid.PcdArmPrimaryCore'.
These PCDs by default use the ClusterId and CoreId to identify the core. And the
primary core is defined as the ClusetrId=0 and CoreId=0.

The helper macros are: IS_PRIMARY_CORE(MpId), GET_CORE_ID(MpId), GET_CLUSTER_ID(MpId),
GET_CORE_POS(MpId), PRIMARY_CORE_ID.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12412 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-09-22 23:01:13 +00:00
parent 55a0d64b88
commit 0787bc6184
24 changed files with 95 additions and 60 deletions
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10
ArmPlatformPkg/PrePi/ModuleEntryPoint.S
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@@ -21,15 +21,17 @@
# Global symbols referenced by this module
GCC_ASM_IMPORT(CEntryPoint)
GCC_ASM_IMPORT(ArmReadMpidr)
GCC_ASM_EXPORT(_ModuleEntryPoint)
StartupAddr: .word CEntryPoint
ASM_PFX(_ModuleEntryPoint):
// Identify CPU ID
mrc p15, 0, r0, c0, c0, 5
and r0, #0xf
// Get ID of this CPU in Multicore system
bl ASM_PFX(ArmReadMpidr)
LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCoreMask), r1)
and r0, r0, r1
_SetSVCMode:
// Enter SVC mode
@@ -94,7 +96,7 @@ _PrepareArguments:
ldr r2, StartupAddr
// Jump to PrePiCore C code
// r0 = core_id
// r0 = MpId
// r1 = UefiMemoryBase
blx r2