1/*
2 *  init.c, Common initialization routines for NEC VR4100 series.
3 *
4 *  Copyright (C) 2003-2005  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19 */
20#include <linux/init.h>
21#include <linux/ioport.h>
22#include <linux/irq.h>
23#include <linux/string.h>
24
25#include <asm/bootinfo.h>
26#include <asm/time.h>
27#include <asm/vr41xx/irq.h>
28#include <asm/vr41xx/vr41xx.h>
29
30#define IO_MEM_RESOURCE_START	0UL
31#define IO_MEM_RESOURCE_END	0x1fffffffUL
32
33static void __init iomem_resource_init(void)
34{
35	iomem_resource.start = IO_MEM_RESOURCE_START;
36	iomem_resource.end = IO_MEM_RESOURCE_END;
37}
38
39static void __init setup_timer_frequency(void)
40{
41	unsigned long tclock;
42
43	tclock = vr41xx_get_tclock_frequency();
44	if (current_cpu_data.processor_id == PRID_VR4131_REV2_0 ||
45	    current_cpu_data.processor_id == PRID_VR4131_REV2_1)
46		mips_hpt_frequency = tclock / 2;
47	else
48		mips_hpt_frequency = tclock / 4;
49}
50
51void __init plat_timer_setup(struct irqaction *irq)
52{
53	setup_irq(TIMER_IRQ, irq);
54}
55
56static void __init timer_init(void)
57{
58	board_time_init = setup_timer_frequency;
59}
60
61void __init plat_mem_setup(void)
62{
63	vr41xx_calculate_clock_frequency();
64
65	timer_init();
66	iomem_resource_init();
67}
68
69void __init prom_init(void)
70{
71	int argc, i;
72	char **argv;
73
74	argc = fw_arg0;
75	argv = (char **)fw_arg1;
76
77	for (i = 1; i < argc; i++) {
78		strcat(arcs_cmdline, argv[i]);
79		if (i < (argc - 1))
80			strcat(arcs_cmdline, " ");
81	}
82}
83
84void __init prom_free_prom_memory(void)
85{
86}
87