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
|
/* $Id: setup.c,v 1.24 1999/10/09 00:00:58 ralf Exp $
*
* Setup pointers to hardware-dependent routines.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1996, 1997, 1998 by Ralf Baechle
*/
#include <linux/config.h>
#include <linux/hdreg.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/console.h>
#include <linux/fb.h>
#include <linux/mc146818rtc.h>
#include <linux/ide.h>
#include <asm/bootinfo.h>
#include <asm/keyboard.h>
#include <asm/irq.h>
#include <asm/jazz.h>
#include <asm/jazzdma.h>
#include <asm/ptrace.h>
#include <asm/reboot.h>
#include <asm/io.h>
#include <asm/pgtable.h>
/*
* Initial irq handlers.
*/
static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
/*
* IRQ2 is cascade interrupt to second interrupt controller
*/
static struct irqaction irq2 = { no_action, 0, 0, "cascade", NULL, NULL};
extern asmlinkage void jazz_handle_int(void);
extern void jazz_machine_restart(char *command);
extern void jazz_machine_halt(void);
extern void jazz_machine_power_off(void);
extern struct ide_ops std_ide_ops;
extern struct rtc_ops jazz_rtc_ops;
extern struct kbd_ops jazz_kbd_ops;
extern struct fd_ops *fd_ops;
extern struct fd_ops jazz_fd_ops;
void (*board_time_init)(struct irqaction *irq);
static void __init jazz_time_init(struct irqaction *irq)
{
/* set the clock to 100 Hz */
r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
i8259_setup_irq(JAZZ_TIMER_IRQ, irq);
}
static void __init jazz_irq_setup(void)
{
set_except_vector(0, jazz_handle_int);
r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
JAZZ_IE_ETHERNET |
JAZZ_IE_SCSI |
JAZZ_IE_SERIAL1 |
JAZZ_IE_SERIAL2 |
JAZZ_IE_PARALLEL |
JAZZ_IE_FLOPPY);
r4030_read_reg16(JAZZ_IO_IRQ_SOURCE); /* clear pending IRQs */
r4030_read_reg32(JAZZ_R4030_INVAL_ADDR); /* clear error bits */
set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
/* set the clock to 100 Hz */
r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
request_region(0x20, 0x20, "pic1");
request_region(0xa0, 0x20, "pic2");
i8259_setup_irq(2, &irq2);
}
int __init page_is_ram(unsigned long pagenr)
{
return 1;
}
void __init jazz_setup(void)
{
add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
irq_setup = jazz_irq_setup;
mips_io_port_base = JAZZ_PORT_BASE;
isa_slot_offset = 0xe3000000;
request_region(0x00,0x20,"dma1");
request_region(0x40,0x20,"timer");
request_region(0x80,0x10,"dma page reg");
request_region(0xc0,0x20,"dma2");
board_time_init = jazz_time_init;
/* The RTC is outside the port address space */
_machine_restart = jazz_machine_restart;
_machine_halt = jazz_machine_halt;
_machine_power_off = jazz_machine_power_off;
#ifdef CONFIG_BLK_DEV_IDE
ide_ops = &std_ide_ops;
#endif
#ifdef CONFIG_BLK_DEV_FD
fd_ops = &jazz_fd_ops;
#endif
#ifdef CONFIG_VT
conswitchp = &dummy_con;
#endif
#warning "Somebody should check if screen_info is ok for Jazz."
screen_info = (struct screen_info) {
0, 0, /* orig-x, orig-y */
0, /* unused */
0, /* orig_video_page */
0, /* orig_video_mode */
160, /* orig_video_cols */
0, 0, 0, /* unused, ega_bx, unused */
64, /* orig_video_lines */
0, /* orig_video_isVGA */
16 /* orig_video_points */
};
rtc_ops = &jazz_rtc_ops;
kbd_ops = &jazz_kbd_ops;
vdma_init();
}
|
