1/* 2 * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6#ifndef CONSOLE_MACROS_S 7#define CONSOLE_MACROS_S 8 9#include <drivers/console.h> 10 11/* 12 * This macro encapsulates the common setup that has to be done at the end of 13 * a console driver's register function. It will register all of the driver's 14 * callbacks in the console_t structure and initialize the flags field (by 15 * default consoles are enabled for the "boot" and "crash" states, this can be 16 * changed after registration with the console_set_scope() function). It ends 17 * with a tail call that will include return to the caller. 18 * REQUIRES console_t pointer in r0 and a valid return address in lr. 19 */ 20 .macro finish_console_register _driver, putc=0, getc=0, flush=0 21 /* 22 * If any of the callback is not specified or set as 0, then the 23 * corresponding callback entry in console_t is set to 0. 24 */ 25 .ifne \putc 26 ldr r1, =console_\_driver\()_putc 27 .else 28 mov r1, #0 29 .endif 30 str r1, [r0, #CONSOLE_T_PUTC] 31 32 .ifne \getc 33 ldr r1, =console_\_driver\()_getc 34 .else 35 mov r1, #0 36 .endif 37 str r1, [r0, #CONSOLE_T_GETC] 38 39 .ifne \flush 40 ldr r1, =console_\_driver\()_flush 41 .else 42 mov r1, #0 43 .endif 44 str r1, [r0, #CONSOLE_T_FLUSH] 45 46 mov r1, #(CONSOLE_FLAG_BOOT | CONSOLE_FLAG_CRASH) 47 str r1, [r0, #CONSOLE_T_FLAGS] 48 b console_register 49 .endm 50 51#endif /* CONSOLE_MACROS_S */ 52