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plat/common: move arch-agnostic fallback functions to C file

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When we add a new callback, we need to duplicate fallbacks among
plat/common/{aarch32,aarch64}/platform_helpers.S  This is tedious.

I created a new C file, then moved 3 functions:
  plat_error_handler
  bl2_plat_preload_setup
  plat_try_next_boot_source

They are called from C, so I do not see a good reason to implement
them in assembly.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2018-02-01 18:42:24 +09:00
parent c43d68510e
commit 0fc50a86c1
4 changed files with 34 additions and 67 deletions
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1
Makefile
View file

@ -193,6 +193,7 @@ BL_COMMON_SOURCES += common/bl_common.c \
lib/${ARCH}/cache_helpers.S \
lib/${ARCH}/misc_helpers.S \
plat/common/plat_log_common.c \
plat/common/platform_helpers_default.c \
plat/common/${ARCH}/plat_common.c \
plat/common/${ARCH}/platform_helpers.S \
${COMPILER_RT_SRCS} \

35
plat/common/aarch32/platform_helpers.S
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -15,10 +15,7 @@
.weak plat_disable_acp
.weak bl1_plat_prepare_exit
.weak platform_mem_init
.weak plat_error_handler
.weak plat_panic_handler
.weak bl2_plat_preload_setup
.weak plat_try_next_boot_source
/* -----------------------------------------------------
* Placeholder function which should be redefined by
@ -94,16 +91,6 @@ func bl1_plat_prepare_exit
bx lr
endfunc bl1_plat_prepare_exit
/* -----------------------------------------------------
* void plat_error_handler(int err) __dead2;
* Endless loop by default.
* -----------------------------------------------------
*/
func plat_error_handler
wfi
b plat_error_handler
endfunc plat_error_handler
/* -----------------------------------------------------
* void plat_panic_handler(void) __dead2;
* Endless loop by default.
@ -112,23 +99,3 @@ endfunc plat_error_handler
func plat_panic_handler
b plat_panic_handler
endfunc plat_panic_handler
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platfrom.
* -----------------------------------------------------
*/
func bl2_plat_preload_setup
bx lr
endfunc bl2_plat_preload_setup
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platfrom.
* -----------------------------------------------------
*/
func plat_try_next_boot_source
mov r0, #0
bx lr
endfunc plat_try_next_boot_source

34
plat/common/aarch64/platform_helpers.S
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -16,10 +16,7 @@
.weak plat_reset_handler
.weak plat_disable_acp
.weak bl1_plat_prepare_exit
.weak plat_error_handler
.weak plat_panic_handler
.weak bl2_plat_preload_setup
.weak plat_try_next_boot_source
#if !ENABLE_PLAT_COMPAT
.globl platform_get_core_pos
@ -158,16 +155,6 @@ func bl1_plat_prepare_exit
ret
endfunc bl1_plat_prepare_exit
/* -----------------------------------------------------
* void plat_error_handler(int err) __dead2;
* Endless loop by default.
* -----------------------------------------------------
*/
func plat_error_handler
wfi
b plat_error_handler
endfunc plat_error_handler
/* -----------------------------------------------------
* void plat_panic_handler(void) __dead2;
* Endless loop by default.
@ -177,22 +164,3 @@ func plat_panic_handler
wfi
b plat_panic_handler
endfunc plat_panic_handler
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platfrom.
* -----------------------------------------------------
*/
func bl2_plat_preload_setup
ret
endfunc bl2_plat_preload_setup
/* -----------------------------------------------------
* Placeholder function which should be redefined by
* each platfrom.
* -----------------------------------------------------
*/
func plat_try_next_boot_source
mov x0, #0
ret
endfunc plat_try_next_boot_source

31
plat/common/platform_helpers_default.c Normal file
View file

@ -0,0 +1,31 @@
/*
* Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <platform.h>
/*
* Placeholder functions which can be redefined by each platfrom.
*/
#pragma weak plat_error_handler
#pragma weak bl2_plat_preload_setup
#pragma weak plat_try_next_boot_source
void __dead2 plat_error_handler(int err)
{
while (1)
wfi();
}
void bl2_plat_preload_setup(void)
{
}
int plat_try_next_boot_source(void)
{
return 0;
}