mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-17 01:54:22 +00:00
6c9ada3150
Platforms that wish to use the sample functions have to add the file to their Makefile. It is not included by default. Change-Id: I713617bb58dc218967199248f68da86241d7ec40 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
92 lines
2.7 KiB
ArmAsm
92 lines
2.7 KiB
ArmAsm
/*
|
|
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
/*
|
|
* If a platform wishes to use the functions in this file it has to be added to
|
|
* the Makefile of the platform. It is not included in the common Makefile.
|
|
*/
|
|
|
|
#include <asm_macros.S>
|
|
#include <console.h>
|
|
|
|
.globl plat_crash_console_init
|
|
.globl plat_crash_console_putc
|
|
.globl plat_crash_console_flush
|
|
|
|
#if MULTI_CONSOLE_API
|
|
|
|
/* -----------------------------------------------------
|
|
* int plat_crash_console_init(void)
|
|
* Use normal console by default. Switch it to crash
|
|
* mode so serial consoles become active again.
|
|
* NOTE: This default implementation will only work for
|
|
* crashes that occur after a normal console (marked
|
|
* valid for the crash state) has been registered with
|
|
* the console framework. To debug crashes that occur
|
|
* earlier, the platform has to override these functions
|
|
* with an implementation that initializes a console
|
|
* driver with hardcoded parameters. See
|
|
* docs/porting-guide.rst for more information.
|
|
* -----------------------------------------------------
|
|
*/
|
|
func plat_crash_console_init
|
|
#if defined(IMAGE_BL1)
|
|
/*
|
|
* BL1 code can possibly crash so early that the data segment is not yet
|
|
* accessible. Don't risk undefined behavior by trying to run the normal
|
|
* console framework. Platforms that want to debug BL1 will need to
|
|
* override this with custom functions that can run from registers only.
|
|
*/
|
|
mov r0, #0
|
|
bx lr
|
|
#else /* IMAGE_BL1 */
|
|
mov r3, lr
|
|
mov r0, #CONSOLE_FLAG_CRASH
|
|
bl console_switch_state
|
|
mov r0, #1
|
|
bx r3
|
|
#endif
|
|
endfunc plat_crash_console_init
|
|
|
|
/* -----------------------------------------------------
|
|
* void plat_crash_console_putc(int character)
|
|
* Output through the normal console by default.
|
|
* -----------------------------------------------------
|
|
*/
|
|
func plat_crash_console_putc
|
|
b console_putc
|
|
endfunc plat_crash_console_putc
|
|
|
|
/* -----------------------------------------------------
|
|
* void plat_crash_console_flush(void)
|
|
* Flush normal console by default.
|
|
* -----------------------------------------------------
|
|
*/
|
|
func plat_crash_console_flush
|
|
b console_flush
|
|
endfunc plat_crash_console_flush
|
|
|
|
#else /* MULTI_CONSOLE_API */
|
|
|
|
/* -----------------------------------------------------
|
|
* In the old API these are all no-op stubs that need to
|
|
* be overridden by the platform to be useful.
|
|
* -----------------------------------------------------
|
|
*/
|
|
func plat_crash_console_init
|
|
mov r0, #0
|
|
bx lr
|
|
endfunc plat_crash_console_init
|
|
|
|
func plat_crash_console_putc
|
|
bx lr
|
|
endfunc plat_crash_console_putc
|
|
|
|
func plat_crash_console_flush
|
|
bx lr
|
|
endfunc plat_crash_console_flush
|
|
|
|
#endif
|