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//
// Copyright (c) 2011, 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
// which accompanies this distribution. The full text of the license may be found at
// http://opensource.org/licenses/bsd-license.php
//
// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
//
#include <AsmMacroIoLib.h>
#include <Library/ArmCpuLib.h>
#include <Library/ArmGicLib.h>
#include <Library/PcdLib.h>
#include <Chipset/ArmV7.h>
.text
.align 3
GCC_ASM_EXPORT(ArmCpuSynchronizeWait)
GCC_ASM_IMPORT(CArmCpuSynchronizeWait)
// Dirty hack to get the Fixed value of GicDistributorBase
GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdGicDistributorBase)
// VOID
// ArmCpuSynchronizeWait (
// IN ARM_CPU_SYNCHRONIZE_EVENT Event
// );
ASM_PFX(ArmCpuSynchronizeWait):
cmp r0, #ARM_CPU_EVENT_BOOT_MEM_INIT
// The SCU enabled is the event to tell us the Init Boot Memory is initialized
beq ArmWaitGicDistributorEnabled
bx ASM_PFX(CArmCpuSynchronizeWait)
// IN None
ArmWaitGicDistributorEnabled:
LoadConstantToReg (ASM_PFX(_gPcd_FixedAtBuild_PcdGicDistributorBase), r0)
ldr r0, [r0]
_WaitGicDistributor:
ldr r1, [r0, #ARM_GIC_ICDDCR]
cmp r1, #1
bne _WaitGicDistributor
bx lr
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