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Move spinlock library code to AArch64 folder 

This patch moves the assembly exclusive lock library code
`spinlock.S` into architecture specific folder `aarch64`.
A stub file which includes the file from new location is
retained at the original location for compatibility. The BL
makefiles are also modified to include the file from the new
location.

Change-Id: Ide0b601b79c439e390c3a017d93220a66be73543
This commit is contained in:
Soby Mathew 2016-08-08 12:42:53 +01:00
parent b127109121
commit 12ab697e8f
5 changed files with 59 additions and 26 deletions
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2
bl2/bl2.mk
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@ -32,6 +32,6 @@ BL2_SOURCES += bl2/bl2_main.c \
bl2/aarch64/bl2_entrypoint.S \
bl2/aarch64/bl2_arch_setup.c \
common/aarch64/early_exceptions.S \
lib/locks/exclusive/spinlock.S
lib/locks/exclusive/aarch64/spinlock.S
BL2_LINKERFILE := bl2/bl2.ld.S

2
bl32/tsp/tsp.mk
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@ -37,7 +37,7 @@ BL32_SOURCES += bl32/tsp/tsp_main.c \
bl32/tsp/tsp_interrupt.c \
bl32/tsp/tsp_timer.c \
common/aarch64/early_exceptions.S \
lib/locks/exclusive/spinlock.S
lib/locks/exclusive/aarch64/spinlock.S
BL32_LINKERFILE := bl32/tsp/tsp.ld.S

52
lib/locks/exclusive/aarch64/spinlock.S Normal file
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@ -0,0 +1,52 @@
/*
* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <asm_macros.S>
.globl spin_lock
.globl spin_unlock
func spin_lock
mov w2, #1
sevl
l1: wfe
l2: ldaxr w1, [x0]
cbnz w1, l1
stxr w1, w2, [x0]
cbnz w1, l2
ret
endfunc spin_lock
func spin_unlock
stlr wzr, [x0]
ret
endfunc spin_unlock

27
lib/locks/exclusive/spinlock.S
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@ -28,25 +28,6 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <asm_macros.S>
.globl spin_lock
.globl spin_unlock
func spin_lock
mov w2, #1
sevl
l1: wfe
l2: ldaxr w1, [x0]
cbnz w1, l1
stxr w1, w2, [x0]
cbnz w1, l2
ret
endfunc spin_lock
func spin_unlock
stlr wzr, [x0]
ret
endfunc spin_unlock
#if !ERROR_DEPRECATED
#include "./aarch64/spinlock.S"
#endif

2
lib/psci/psci_lib.mk
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@ -33,7 +33,7 @@ PSCI_LIB_SOURCES := lib/el3_runtime/cpu_data_array.c \
lib/el3_runtime/aarch64/cpu_data.S \
lib/el3_runtime/aarch64/context_mgmt.c \
lib/cpus/aarch64/cpu_helpers.S \
lib/locks/exclusive/spinlock.S \
lib/locks/exclusive/aarch64/spinlock.S \
lib/psci/psci_off.c \
lib/psci/psci_on.c \
lib/psci/psci_suspend.c \