1/*
2 *  Copyright (C) NEC Electronics Corporation 2004-2006
3 *
4 *  This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c.
5 *
6 *	Copyright 2001 MontaVista Software Inc.
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU General Public License as published by
10 *  the Free Software Foundation; either version 2 of the License, or
11 *  (at your option) any later version.
12 *
13 *  This program is distributed in the hope that it will be useful,
14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *  GNU General Public License for more details.
17 *
18 *  You should have received a copy of the GNU General Public License
19 *  along with this program; if not, write to the Free Software
20 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21 */
22#include <linux/init.h>
23#include <linux/kernel.h>
24#include <linux/types.h>
25
26#include <asm/time.h>
27#include <asm/reboot.h>
28
29#include <asm/emma/emma2rh.h>
30
31#define USE_CPU_COUNTER_TIMER	/* whether we use cpu counter */
32
33extern void markeins_led(const char *);
34
35static int bus_frequency;
36
37static void markeins_machine_restart(char *command)
38{
39	static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000;
40
41	printk("cannot EMMA2RH Mark-eins restart.\n");
42	markeins_led("restart.");
43	back_to_prom();
44}
45
46static void markeins_machine_halt(void)
47{
48	printk("EMMA2RH Mark-eins halted.\n");
49	markeins_led("halted.");
50	while (1) ;
51}
52
53static void markeins_machine_power_off(void)
54{
55	markeins_led("poweroff.");
56	while (1) ;
57}
58
59static unsigned long __initdata emma2rh_clock[4] = {
60	166500000, 187312500, 199800000, 210600000
61};
62
63static unsigned int __init detect_bus_frequency(unsigned long rtc_base)
64{
65	u32 reg;
66
67	/* detect from boot strap */
68	reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
69	reg = (reg >> 4) & 0x3;
70
71	return emma2rh_clock[reg];
72}
73
74void __init plat_time_init(void)
75{
76	u32 reg;
77	if (bus_frequency == 0)
78		bus_frequency = detect_bus_frequency(0);
79
80	reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0);
81	if ((reg & 0x3) == 0)
82		reg = (reg >> 6) & 0x3;
83	else {
84		reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL);
85		reg = (reg >> 4) & 0x3;
86	}
87	mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2;
88}
89
90static void markeins_board_init(void);
91extern void markeins_irq_setup(void);
92
93static void inline __init markeins_sio_setup(void)
94{
95}
96
97void __init plat_mem_setup(void)
98{
99	/* initialize board - we don't trust the loader */
100	markeins_board_init();
101
102	set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE));
103
104	_machine_restart = markeins_machine_restart;
105	_machine_halt = markeins_machine_halt;
106	pm_power_off = markeins_machine_power_off;
107
108	/* setup resource limits */
109	ioport_resource.start = EMMA2RH_PCI_IO_BASE;
110	ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1;
111	iomem_resource.start = EMMA2RH_IO_BASE;
112	iomem_resource.end = EMMA2RH_ROM_BASE - 1;
113
114	markeins_sio_setup();
115}
116
117static void __init markeins_board_init(void)
118{
119	u32 val;
120
121	val = emma2rh_in32(EMMA2RH_PBRD_INT_EN);	/* open serial interrupts. */
122	emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa);
123	val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL);	/* set serial clocks. */
124	emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5);	/* 18MHz */
125	emma2rh_out32(EMMA2RH_PCI_CONTROL, 0);
126
127	markeins_led("MVL E2RH");
128}
129