mirror of https://github.com/acidanthera/audk.git
31 lines
1004 B
ArmAsm
31 lines
1004 B
ArmAsm
//
|
|
// Copyright (c) 2011-2012, 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 <Chipset/ArmCortexA9.h>
|
|
|
|
.text
|
|
.align 3
|
|
|
|
GCC_ASM_EXPORT(ArmGetScuBaseAddress)
|
|
|
|
// IN None
|
|
// OUT r0 = SCU Base Address
|
|
ASM_PFX(ArmGetScuBaseAddress):
|
|
// Read Configuration Base Address Register. ArmCBar cannot be called to get
|
|
// the Configuration BAR as a stack is not necessary setup. The SCU is at the
|
|
// offset 0x0000 from the Private Memory Region.
|
|
mrc p15, 4, r0, c15, c0, 0
|
|
bx lr
|