| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2003 Eric Biederman |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <console/console.h> |
| #include <uart8250.h> |
| #include <pc80/mc146818rtc.h> |
| |
| static u32 uart_bar = 0; |
| |
| static void uartmem_init(void) |
| { |
| uart_bar = uart_mem_init(); |
| } |
| |
| static void uartmem_tx_byte(unsigned char data) |
| { |
| if (!uart_bar) |
| return; |
| |
| uart8250_mem_tx_byte(uart_bar, data); |
| } |
| |
| static void uartmem_tx_flush(void) |
| { |
| uart8250_mem_tx_flush(uart_bar); |
| } |
| |
| static unsigned char uartmem_rx_byte(void) |
| { |
| if (!uart_bar) |
| return 0; |
| |
| return uart8250_mem_rx_byte(uart_bar); |
| } |
| |
| static int uartmem_tst_byte(void) |
| { |
| if (!uart_bar) |
| return 0; |
| |
| return uart8250_mem_can_rx_byte(uart_bar); |
| } |
| |
| static const struct console_driver uart8250mem_console __console = { |
| .init = uartmem_init, |
| .tx_byte = uartmem_tx_byte, |
| .tx_flush = uartmem_tx_flush, |
| .rx_byte = uartmem_rx_byte, |
| .tst_byte = uartmem_tst_byte, |
| }; |