summaryrefslogtreecommitdiff
path: root/arch/mips/lasat/setup.c
blob: dcd819d57dae4f39688ded7193970f3ed29100c4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/*
 * Carsten Langgaard, carstenl@mips.com
 * Copyright (C) 1999 MIPS Technologies, Inc.  All rights reserved.
 *
 * Thomas Horsten <thh@lasat.com>
 * Copyright (C) 2000 LASAT Networks A/S.
 *
 * Brian Murphy <brian@murphy.dk>
 *
 *  This program is free software; you can distribute it and/or modify it
 *  under the terms of the GNU General Public License (Version 2) as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope 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.,
 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Lasat specific setup.
 */
#include <linux/config.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>

#include <asm/time.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/serial.h>
#include <asm/lasat/lasat.h>
#include <asm/lasat/serial.h>

#ifdef CONFIG_PICVUE
#include <linux/notifier.h>
#endif

#include "ds1603.h"
#include <asm/lasat/ds1603.h>
#include <asm/lasat/picvue.h>
#include <asm/lasat/eeprom.h>

#include "prom.h"

int lasat_command_line = 0;
void lasatint_init(void);

extern void lasat_reboot_setup(void);
extern void pcisetup(void);
extern void edhac_init(void *, void *, void *);
extern void addrflt_init(void);

struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
	{(void *)KSEG1ADDR(0x1c840000), (void *)KSEG1ADDR(0x1c800000), 2},
	{(void *)KSEG1ADDR(0x11080000), (void *)KSEG1ADDR(0x11000000), 6}
};

struct lasat_misc *lasat_misc = NULL;

#ifdef CONFIG_DS1603
static struct ds_defs ds_defs[N_MACHTYPES] = {
	{ (void *)DS1603_REG_100, (void *)DS1603_REG_100,
		DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
		DS1603_DATA_SHIFT_100, 0, 0 },
	{ (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
		DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
		DS1603_DATA_READ_SHIFT_200, 1, 2000 }
};
#endif

#ifdef CONFIG_PICVUE
#include "picvue.h"
static struct pvc_defs pvc_defs[N_MACHTYPES] = {
	{ (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
		PVC_E_100, PVC_RW_100, PVC_RS_100 },
	{ (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
		PVC_E_200, PVC_RW_200, PVC_RS_200 }
};
#endif

static int lasat_panic_display(struct notifier_block *this,
			     unsigned long event, void *ptr)
{
#ifdef CONFIG_PICVUE
	unsigned char *string = ptr;
	if (string == NULL)
		string = "Kernel Panic";
	pvc_dump_string(string);
#endif
	return NOTIFY_DONE;
}

static int lasat_panic_prom_monitor(struct notifier_block *this,
			     unsigned long event, void *ptr)
{
	prom_monitor();
	return NOTIFY_DONE;
}

static struct notifier_block lasat_panic_block[] =
{
	{ lasat_panic_display, NULL, INT_MAX },
	{ lasat_panic_prom_monitor, NULL, INT_MIN }
};

static void lasat_time_init(void)
{
	mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
}

static void lasat_timer_setup(struct irqaction *irq)
{

	write_c0_compare(
		read_c0_count() +
		mips_hpt_frequency / HZ);
	change_c0_status(ST0_IM, IE_IRQ0 | IE_IRQ5);
}

#define DYNAMIC_SERIAL_INIT
#ifdef DYNAMIC_SERIAL_INIT
void __init serial_init(void)
{
#ifdef CONFIG_SERIAL_8250
	struct uart_port s;

	memset(&s, 0, sizeof(s));

	s.flags = STD_COM_FLAGS;
	s.iotype = SERIAL_IO_MEM;

	if (mips_machtype == MACH_LASAT_100) {
		s.uartclk = LASAT_BASE_BAUD_100 * 16;
		s.irq = LASATINT_UART_100;
		s.regshift = LASAT_UART_REGS_SHIFT_100;
		s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_100);
	} else {
		s.uartclk = LASAT_BASE_BAUD_200 * 16;
		s.irq = LASATINT_UART_200;
		s.regshift = LASAT_UART_REGS_SHIFT_200;
		s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_200);
	}

	if (early_serial_setup(&s) != 0)
		printk(KERN_ERR "Serial setup failed!\n");
#endif
}
#endif

void __init plat_setup(void)
{
	int i;
	lasat_misc  = &lasat_misc_info[mips_machtype];
#ifdef CONFIG_PICVUE
	picvue = &pvc_defs[mips_machtype];
#endif

	/* Set up panic notifier */
	for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
		notifier_chain_register(&panic_notifier_list, &lasat_panic_block[i]);

	lasat_reboot_setup();

	board_time_init = lasat_time_init;
	board_timer_setup = lasat_timer_setup;

#ifdef CONFIG_DS1603
	ds1603 = &ds_defs[mips_machtype];
	rtc_get_time = ds1603_read;
	rtc_set_time = ds1603_set;
#endif

#ifdef DYNAMIC_SERIAL_INIT
	serial_init();
#endif
	/* Switch from prom exception handler to normal mode */
	change_c0_status(ST0_BEV,0);

	prom_printf("Lasat specific initialization complete\n");
}