1/*
 2 * Copyright (C) 2009 Lemote Inc.
 3 * Author: Wu Zhangjin, wuzhangjin@gmail.com
 4 *
 5 * This program is free software; you can redistribute  it and/or modify it
 6 * under  the terms of  the GNU General  Public License as published by the
 7 * Free Software Foundation;  either version 2 of the  License, or (at your
 8 * option) any later version.
 9 */
10
11#include <linux/module.h>
12#include <asm/bootinfo.h>
13
14#include <loongson.h>
15
16/* ioremapped */
17unsigned long _loongson_uart_base;
18EXPORT_SYMBOL(_loongson_uart_base);
19/* raw */
20unsigned long loongson_uart_base;
21EXPORT_SYMBOL(loongson_uart_base);
22
23void prom_init_loongson_uart_base(void)
24{
25	switch (mips_machtype) {
26	case MACH_LEMOTE_FL2E:
27		loongson_uart_base = LOONGSON_PCIIO_BASE + 0x3f8;
28		break;
29	case MACH_LEMOTE_FL2F:
30	case MACH_LEMOTE_LL2F:
31		loongson_uart_base = LOONGSON_PCIIO_BASE + 0x2f8;
32		break;
33	case MACH_LEMOTE_ML2F7:
34	case MACH_LEMOTE_YL2F89:
35	case MACH_DEXXON_GDIUM2F10:
36	case MACH_LEMOTE_NAS:
37	default:
38		/* The CPU provided serial port */
39		loongson_uart_base = LOONGSON_LIO1_BASE + 0x3f8;
40		break;
41	}
42
43	_loongson_uart_base =
44		(unsigned long)ioremap_nocache(loongson_uart_base, 8);
45}