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ArmPlatformPkg/ArmPlatformLib: Added support for ArmPlatformIsPrimaryCore()

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Checking if a core if the primary/boot core used to be done with the macro
IS_PRIMARY_CORE().
Some platforms exposes configuration registers to change the primary core.
Replacing the macro IS_PRIMARY_CORE() by ArmPlatformIsPrimaryCore() allows
some flexibility in the way to check the primary core.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ryan Harkin <ryan.harkin@linaro.org>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14344 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2013-05-10 12:41:27 +00:00
parent bc7b889a03
commit bebda7ceec
59 changed files with 554 additions and 267 deletions
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18
ArmPlatformPkg/PrePeiCore/Arm/PrePeiCoreEntryPoint.S
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@@ -1,5 +1,5 @@
//
// Copyright (c) 2011, ARM Limited. All rights reserved.
// Copyright (c) 2011-2013, ARM Limited. All rights reserved.
//
// This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
@@ -20,6 +20,7 @@
.align 3
GCC_ASM_IMPORT(CEntryPoint)
GCC_ASM_IMPORT(ArmPlatformIsPrimaryCore)
GCC_ASM_IMPORT(ArmReadMpidr)
GCC_ASM_EXPORT(_ModuleEntryPoint)
@@ -28,18 +29,19 @@ StartupAddr: .word CEntryPoint
ASM_PFX(_ModuleEntryPoint):
// Identify CPU ID
bl ASM_PFX(ArmReadMpidr)
// Get ID of this CPU in Multicore system
LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCoreMask), r1)
and r5, r0, r1
// Keep a copy of the MpId register value
mov r5, r0
// Is it the Primary Core ?
bl ASM_PFX(ArmPlatformIsPrimaryCore)
// Get the top of the primary stacks (and the base of the secondary stacks)
LoadConstantToReg (FixedPcdGet32(PcdCPUCoresStackBase), r1)
LoadConstantToReg (FixedPcdGet32(PcdCPUCorePrimaryStackSize), r2)
add r1, r1, r2
// Is it the Primary Core ?
LoadConstantToReg (FixedPcdGet32(PcdArmPrimaryCore), r3)
cmp r5, r3
// r0 is equal to 1 if I am the primary core
cmp r0, #1
beq _SetupPrimaryCoreStack
_SetupSecondaryCoreStack: