[mirror_edk2.git] / ArmPkg / Library / ArmLib / ArmV7 / ArmV7MPCoreHelper.S

#\r
#  Copyright (c) 2011, 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 <Base.h>\r
#include <Library/PcdLib.h>\r
#include <Chipset/ArmV7.h>\r
#include <AutoGen.h>\r
#.include AsmMacroIoLib.inc\r
\r
.text\r
.align 2\r
\r
GCC_ASM_EXPORT(ArmIsScuEnable)\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\s\slr\r
\r
# IN  None\r
# OUT r1 = SCU enabled (boolean)\r
ASM_PFX(ArmIsScuEnable):\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
  add   r1, r0, #SCU_CONTROL_OFFSET\r
  ldr   r1, [r1]\r
  and   r1, r1, #1\r
  bx    lr\r
\r
ASM_FUNCTION_REMOVE_IF_UNREFERENCED \r
Commit	Line	Data
1bfda055	1	#\r
	2	# Copyright (c) 2011, ARM Limited. All rights reserved.\r
	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
	14	#include <AsmMacroIoLib.h>\r
	15	#include <Base.h>\r
	16	#include <Library/PcdLib.h>\r
	17	#include <Chipset/ArmV7.h>\r
	18	#include <AutoGen.h>\r
	19	#.include AsmMacroIoLib.inc\r
	20	\r
	21	.text\r
	22	.align 2\r
	23	\r
	24	GCC_ASM_EXPORT(ArmIsScuEnable)\r
	25	GCC_ASM_EXPORT(ArmGetScuBaseAddress)\r
	26	\r
	27	# IN None\r
	28	# OUT r0 = SCU Base Address\r
	29	ASM_PFX(ArmGetScuBaseAddress):\r
	30	# Read Configuration Base Address Register. ArmCBar cannot be called to get\r
	31	# the Configuration BAR as a stack is not necessary setup. The SCU is at the\r
	32	# offset 0x0000 from the Private Memory Region.\r
	33	mrc p15, 4, r0, c15, c0, 0\r
58b5d037	34	bx\s\slr\r
1bfda055	35	\r
	36	# IN None\r
	37	# OUT r1 = SCU enabled (boolean)\r
	38	ASM_PFX(ArmIsScuEnable):\r
	39	# Read Configuration Base Address Register. ArmCBar cannot be called to get\r
	40	# the Configuration BAR as a stack is not necessary setup. The SCU is at the\r
	41	# offset 0x0000 from the Private Memory Region.\r
	42	mrc p15, 4, r0, c15, c0, 0\r
	43	add r1, r0, #SCU_CONTROL_OFFSET\r
	44	ldr r1, [r1]\r
	45	and r1, r1, #1\r
	46	bx lr\r
	47	\r
	48	ASM_FUNCTION_REMOVE_IF_UNREFERENCED \r