| /* |
| * Copyright (C) 2014 Panasonic Corporation |
| * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <linux/serial_reg.h> |
| |
| #if !defined(CONFIG_DEBUG_SEMIHOSTING) |
| #include CONFIG_DEBUG_LL_INCLUDE |
| #endif |
| |
| #define BAUDRATE 115200 |
| #define DIV_ROUND(x, d) (((x) + ((d) / 2)) / (d)) |
| #define DIVISOR DIV_ROUND(UART_CLK, 16 * BAUDRATE) |
| |
| .macro init_debug_uart, ra, rb, rc |
| addruart \ra, \rb, \rc |
| mov \rb, #UART_LCR_WLEN8 |
| strb \rb, [\ra, #0x11] |
| ldr \rb, =DIVISOR |
| str \rb, [\ra, #0x24] |
| .endm |