2 * lpc47m10x_early_serial.c: Pre-RAM driver for SMSC LPC47M10X2 Super I/O chip
3 * derived from lpc47n217
5 * Copyright (C) 2005 Digital Design Corporation
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <arch/romcc_io.h>
23 #include "lpc47m10x.h"
25 /** Enable access to the LPC47M10X2's configuration registers. */
26 static inline void pnp_enter_conf_state(device_t dev)
28 unsigned port = dev>>8;
32 /** Disable access to the LPC47M10X2's configuration registers. */
33 static void pnp_exit_conf_state(device_t dev)
35 unsigned port = dev>>8;
40 * Configure the base I/O port of the specified serial device and enable the
43 * @param dev High 8 bits = Super I/O port, low 8 bits = logical device number.
44 * @param iobase Processor I/O port address to assign to this serial device.
46 static void lpc47m10x_enable_serial(device_t dev, unsigned iobase)
48 pnp_enter_conf_state(dev);
49 pnp_set_logical_device(dev);
50 pnp_set_enable(dev, 0);
51 pnp_set_iobase(dev, PNP_IDX_IO0, iobase);
52 pnp_set_enable(dev, 1);
53 pnp_exit_conf_state(dev);