aboutsummaryrefslogtreecommitdiff
path: root/arch/mips/sgi-ip22/ip22-setup.c
blob: 174f09e42f6bd06147b493b2203e2b0854ae11f7 (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
/*
 * ip22-setup.c: SGI specific setup, including init of the feature struct.
 *
 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
 * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
 */
#include <linux/ds1286.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/console.h>
#include <linux/sched.h>
#include <linux/tty.h>

#include <asm/addrspace.h>
#include <asm/bcache.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/gdb-stub.h>
#include <asm/io.h>
#include <asm/traps.h>
#include <asm/sgialib.h>
#include <asm/sgi/mc.h>
#include <asm/sgi/hpc3.h>
#include <asm/sgi/ip22.h>

unsigned long sgi_gfxaddr;
EXPORT_SYMBOL_GPL(sgi_gfxaddr);

/*
 * Stop-A is originally a Sun thing that isn't standard on IP22 so to avoid
 * accidents it's disabled by default on IP22.
 *
 * FIXME: provide a mechanism to change the value of stop_a_enabled.
 */
int stop_a_enabled;

void ip22_do_break(void)
{
	if (!stop_a_enabled)
		return;

	printk("\n");
	ArcEnterInteractiveMode();
}

EXPORT_SYMBOL(ip22_do_break);

extern void ip22_be_init(void) __init;

void __init plat_mem_setup(void)
{
	char *ctype;
	char *cserial;

	board_be_init = ip22_be_init;

	/* Init the INDY HPC I/O controller.  Need to call this before
	 * fucking with the memory controller because it needs to know the
	 * boardID and whether this is a Guiness or a FullHouse machine.
	 */
	sgihpc_init();

	/* Init INDY memory controller. */
	sgimc_init();

#ifdef CONFIG_BOARD_SCACHE
	/* Now enable boardcaches, if any. */
	indy_sc_init();
#endif

	/* Set EISA IO port base for Indigo2
	 * ioremap cannot fail */
	set_io_port_base((unsigned long)ioremap(0x00080000,
						0x1fffffff - 0x00080000));
	/* ARCS console environment variable is set to "g?" for
	 * graphics console, it is set to "d" for the first serial
	 * line and "d2" for the second serial line.
	 *
	 * Need to check if the case is 'g' but no keyboard:
	 * (ConsoleIn/Out = serial)
	 */
	ctype = ArcGetEnvironmentVariable("console");
	cserial = ArcGetEnvironmentVariable("ConsoleOut");

	if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
		static char options[8];
		char *baud = ArcGetEnvironmentVariable("dbaud");
		if (baud)
			strcpy(options, baud);
		add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
				      baud ? options : NULL);
	} else if (!ctype || *ctype != 'g') {
		/* Use ARC if we don't want serial ('d') or graphics ('g'). */
		prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
		add_preferred_console("arc", 0, NULL);
	}

#ifdef CONFIG_KGDB
	{
	char *kgdb_ttyd = prom_getcmdline();

	if ((kgdb_ttyd = strstr(kgdb_ttyd, "kgdb=ttyd")) != NULL) {
		int line;
		kgdb_ttyd += strlen("kgdb=ttyd");
		if (*kgdb_ttyd != '1' && *kgdb_ttyd != '2')
			printk(KERN_INFO "KGDB: Uknown serial line /dev/ttyd%c"
			       ", falling back to /dev/ttyd1\n", *kgdb_ttyd);
		line = *kgdb_ttyd == '2' ? 0 : 1;
		printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for "
		       "session\n", line ? 1 : 2);
		rs_kgdb_hook(line);

		printk(KERN_INFO "KGDB: Using serial line /dev/ttyd%d for "
		       "session, please connect your debugger\n", line ? 1:2);

		kgdb_enabled = 1;
		/* Breakpoints and stuff are in sgi_irq_setup() */
	}
	}
#endif

#if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE)
	{
		ULONG *gfxinfo;
		ULONG * (*__vec)(void) = (void *) (long)
			*((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20));

		gfxinfo = __vec();
		sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000
			       && gfxinfo[1] <= 0xc0000000)
			       ? gfxinfo[1] - 0xa0000000 : 0);

		/* newport addresses? */
		if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) {
			conswitchp = &newport_con;
		}
	}
#endif
}