| /* | |
| * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.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 << 8 | |
| str \rb, [\ra, #0x10] | |
| ldr \rb, =DIVISOR | |
| str \rb, [\ra, #0x24] | |
| .endm |