[mirror_edk2.git] / ArmPkg / Drivers / ArmCpuLib / ArmCortexA9Lib / ArmCortexA9Helper.S

//\r
//  Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r
//\r
//  This program and the accompanying materials\r
//  are licensed and made available under the terms and conditions of the BSD License\r
//  which accompanies this distribution.  The full text of the license may be found at\r
//  http://opensource.org/licenses/bsd-license.php\r
//\r
//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
//\r
//\r
\r
#include <AsmMacroIoLib.h>\r
#include <Library/ArmCpuLib.h>\r
#include <Chipset/ArmCortexA9.h>\r
\r
.text\r
.align 3\r
\r
GCC_ASM_EXPORT(ArmGetScuBaseAddress)\r
\r
// IN None\r
// OUT r0 = SCU Base Address\r
ASM_PFX(ArmGetScuBaseAddress):\r
  // Read Configuration Base Address Register. ArmCBar cannot be called to get\r
  // the Configuration BAR as a stack is not necessary setup. The SCU is at the\r
  // offset 0x0000 from the Private Memory Region.\r
  mrc   p15, 4, r0, c15, c0, 0\r
  bx  lr\r
Commit	Line	Data
3127615b	1	//\r
b1d41be7	2	// Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r
3127615b	3	//\r
	4	// This program and the accompanying materials\r
	5	// are licensed and made available under the terms and conditions of the BSD License\r
	6	// which accompanies this distribution. The full text of the license may be found at\r
	7	// http://opensource.org/licenses/bsd-license.php\r
	8	//\r
	9	// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	//\r
	12	//\r
	13	\r
81be6e07	14	#include <AsmMacroIoLib.h>\r
3127615b	15	#include <Library/ArmCpuLib.h>\r
	16	#include <Chipset/ArmCortexA9.h>\r
	17	\r
	18	.text\r
	19	.align 3\r
	20	\r
3127615b	21	GCC_ASM_EXPORT(ArmGetScuBaseAddress)\r
3127615b	22	\r
	23	// IN None\r
	24	// OUT r0 = SCU Base Address\r
	25	ASM_PFX(ArmGetScuBaseAddress):\r
	26	// Read Configuration Base Address Register. ArmCBar cannot be called to get\r
	27	// the Configuration BAR as a stack is not necessary setup. The SCU is at the\r
	28	// offset 0x0000 from the Private Memory Region.\r
	29	mrc p15, 4, r0, c15, c0, 0\r
	30	bx lr\r