1/* 2 * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6#include <asm_macros.S> 7 8 .globl console_core_init 9 .globl console_core_putc 10 .globl console_core_getc 11 .globl console_core_flush 12 13 /* ----------------------------------------------------------------- 14 * int console_core_init(uintptr_t base_addr, 15 * unsigned int uart_clk, 16 * unsigned int baud_rate) 17 * 18 * Function to initialize the console without a C Runtime to print 19 * debug information. This function will be accessed by console_init 20 * and crash reporting. 21 * 22 * In: r0 - console base address 23 * r1 - Uart clock in Hz 24 * r2 - Baud rate 25 * Out: return 1 on success else 0 on error 26 * Clobber list : r1, r2, r3 27 * ----------------------------------------------------------------- 28 */ 29func console_core_init 30 bx lr 31endfunc console_core_init 32 33 /* --------------------------------------------------------------- 34 * int console_core_putc(int c, uintptr_t base_addr) 35 * 36 * Function to output a character over the console. It returns the 37 * character printed on success or -1 on error. 38 * 39 * In : r0 - character to be printed 40 * r1 - console base address 41 * Out : return -1 on error else return character. 42 * Clobber list : r2 43 * --------------------------------------------------------------- 44 */ 45func console_core_putc 46 bx lr 47endfunc console_core_putc 48 49 /* ----------------------------------------------------------- 50 * int console_core_getc(uintptr_t base_addr) 51 * 52 * Function to get a character from the console. 53 * It returns the character grabbed on success or -1 on error. 54 * 55 * In : r0 - console base address 56 * Out : return -1. 57 * Clobber list : r0, r1 58 * ----------------------------------------------------------- 59 */ 60func console_core_getc 61 /* Not supported */ 62 mov r0, #-1 63 bx lr 64endfunc console_core_getc 65 66 /* --------------------------------------------------------------- 67 * int console_core_flush(uintptr_t base_addr) 68 * 69 * Function to force a write of all buffered data that hasn't been 70 * output. 71 * 72 * In : r0 - console base address 73 * Out : return -1 on error else return 0. 74 * Clobber list : r0, r1 75 * --------------------------------------------------------------- 76 */ 77func console_core_flush 78 bx lr 79endfunc console_core_flush 80