mirror of https://github.com/acidanthera/audk.git
57 lines
1.6 KiB
NASM
57 lines
1.6 KiB
NASM
//
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// Copyright (c) 2011, ARM Limited. All rights reserved.
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//
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// This program and the accompanying materials
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// are licensed and made available under the terms and conditions of the BSD License
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// which accompanies this distribution. The full text of the license may be found at
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// http://opensource.org/licenses/bsd-license.php
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//
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// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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//
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//
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#include <AsmMacroIoLib.h>
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#include <Library/ArmCpuLib.h>
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#include <Library/ArmGicLib.h>
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#include <Library/PcdLib.h>
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#include <Chipset/ArmV7.h>
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INCLUDE AsmMacroIoLib.inc
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EXPORT ArmCpuSynchronizeWait
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IMPORT CArmCpuSynchronizeWait
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// Dirty hack to get the Fixed value of GicDistributorBase
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IMPORT _gPcd_FixedAtBuild_PcdGicDistributorBase
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PRESERVE8
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AREA ArmCortexA15Helper, CODE, READONLY
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// VOID
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// ArmCpuSynchronizeWait (
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// IN ARM_CPU_SYNCHRONIZE_EVENT Event
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// );
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ArmCpuSynchronizeWait
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cmp r0, #ARM_CPU_EVENT_BOOT_MEM_INIT
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// The SCU enabled is the event to tell us the Init Boot Memory is initialized
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beq ArmWaitGicDistributorEnabled
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// Case when the stack has been set up
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push {r1,lr}
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LoadConstantToReg (CArmCpuSynchronizeWait, r1)
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blx r1
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pop {r1,lr}
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bx lr
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// IN None
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ArmWaitGicDistributorEnabled
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LoadConstantToReg (_gPcd_FixedAtBuild_PcdGicDistributorBase, r0)
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ldr r0, [r0]
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_WaitGicDistributor
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ldr r1, [r0, #ARM_GIC_ICDDCR]
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cmp r1, #1
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bne _WaitGicDistributor
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bx lr
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END
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