| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de> |
| * |
| * 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/io.h> |
| #include <device/pnp_def.h> |
| |
| /* All known/supported SMSC Super I/Os have the same logical device IDs |
| * for the serial ports (COM1, COM2). |
| */ |
| #define SMSCSUPERIO_SP1 4 /* Com1 */ |
| #define SMSCSUPERIO_SP2 5 /* Com2 */ |
| |
| /** |
| * Enable the specified serial port. |
| * |
| * @param dev The device to use. |
| * @param iobase The I/O base of the serial port (usually 0x3f8/0x2f8). |
| */ |
| static inline void smscsuperio_enable_serial(device_t dev, u16 iobase) |
| { |
| u16 port = dev >> 8; |
| |
| outb(0x55, port); /* Enter the configuration state. */ |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, iobase); |
| pnp_set_enable(dev, 1); |
| outb(0xaa, port); /* Exit the configuration state. */ |
| } |
