mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-17 01:54:22 +00:00
7e2bbef9f9
Allow AArch32 to use the multi console driver by adding the required functions Change-Id: I9e69f18965f320074cf75442d6b0de891aef7936 Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
43 lines
1.5 KiB
ArmAsm
43 lines
1.5 KiB
ArmAsm
/*
|
|
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
#ifndef __CONSOLE_MACROS_S__
|
|
#define __CONSOLE_MACROS_S__
|
|
|
|
#include <console.h>
|
|
|
|
/*
|
|
* This macro encapsulates the common setup that has to be done at the end of
|
|
* a console driver's register function. It will register all of the driver's
|
|
* callbacks in the console_t structure and initialize the flags field (by
|
|
* default consoles are enabled for the "boot" and "crash" states, this can be
|
|
* changed after registration with the console_set_scope() function). It ends
|
|
* with a tail call that will include return to the caller.
|
|
* REQUIRES console_t pointer in x0 and a valid return address in x30.
|
|
*/
|
|
.macro finish_console_register _driver
|
|
/*
|
|
* Add these weak definitions so we will automatically write a 0 if the
|
|
* function doesn't exist. I'd rather use .ifdef but that only works if
|
|
* the function was defined (not just declared .global) above this point
|
|
* in the file, which we can't guarantee.
|
|
*/
|
|
.weak console_\_driver\()_putc
|
|
.weak console_\_driver\()_getc
|
|
.weak console_\_driver\()_flush
|
|
|
|
/* Don't use adrp on weak funcs! See GNU ld bugzilla issue 22589. */
|
|
ldr r1, =console_\_driver\()_putc
|
|
str r1, [r0, #CONSOLE_T_PUTC]
|
|
ldr r1, =console_\_driver\()_getc
|
|
str r1, [r0, #CONSOLE_T_GETC]
|
|
ldr r1, =console_\_driver\()_flush
|
|
str r1, [r0, #CONSOLE_T_FLUSH]
|
|
mov r1, #(CONSOLE_FLAG_BOOT | CONSOLE_FLAG_CRASH)
|
|
str r1, [r0, #CONSOLE_T_FLAGS]
|
|
b console_register
|
|
.endm
|
|
|
|
#endif /* __CONSOLE_MACROS_S__ */
|