| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008 Arastra, Inc. |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 <arch/romcc_io.h> |
| #include "i3100.h" |
| |
| static void i3100_sio_write(u8 port, u8 ldn, u8 index, |
| u8 value) |
| { |
| outb(0x07, port); |
| outb(ldn, port + 1); |
| outb(index, port); |
| outb(value, port + 1); |
| } |
| |
| static void i3100_enable_serial(u8 port, u8 ldn, u16 iobase) |
| { |
| /* Enter configuration state */ |
| outb(0x80, port); |
| outb(0x86, port); |
| |
| /* Enable serial port */ |
| i3100_sio_write(port, ldn, 0x30, 0x01); |
| |
| /* Set serial port IO region */ |
| i3100_sio_write(port, ldn, 0x60, (iobase >> 8) & 0xff); |
| i3100_sio_write(port, ldn, 0x61, iobase & 0xff); |
| |
| /* Enable device interrupts, set UART_CLK predivide to 26 */ |
| i3100_sio_write(port, 0x00, 0x29, 0x0b); |
| |
| /* Exit configuration state */ |
| outb(0x68, port); |
| outb(0x08, port); |
| } |