1 /*
2 * ip22-setup.c: SGI specific setup, including init of the feature struct.
3 *
4 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
5 * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
6 */
7 #include <linux/init.h>
8 #include <linux/kernel.h>
9 #include <linux/kdev_t.h>
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/console.h>
13 #include <linux/sched.h>
14 #include <linux/tty.h>
15
16 #include <asm/addrspace.h>
17 #include <asm/bcache.h>
18 #include <asm/bootinfo.h>
19 #include <asm/irq.h>
20 #include <asm/reboot.h>
21 #include <asm/time.h>
22 #include <asm/io.h>
23 #include <asm/traps.h>
24 #include <asm/sgialib.h>
25 #include <asm/sgi/mc.h>
26 #include <asm/sgi/hpc3.h>
27 #include <asm/sgi/ip22.h>
28
29 unsigned long sgi_gfxaddr;
30 EXPORT_SYMBOL_GPL(sgi_gfxaddr);
31
32 extern void ip22_be_init(void) __init;
33
plat_mem_setup(void)34 void __init plat_mem_setup(void)
35 {
36 char *ctype;
37 char *cserial;
38
39 board_be_init = ip22_be_init;
40
41 /* Init the INDY HPC I/O controller. Need to call this before
42 * fucking with the memory controller because it needs to know the
43 * boardID and whether this is a Guiness or a FullHouse machine.
44 */
45 sgihpc_init();
46
47 /* Init INDY memory controller. */
48 sgimc_init();
49
50 #ifdef CONFIG_BOARD_SCACHE
51 /* Now enable boardcaches, if any. */
52 indy_sc_init();
53 #endif
54
55 /* Set EISA IO port base for Indigo2
56 * ioremap cannot fail */
57 set_io_port_base((unsigned long)ioremap(0x00080000,
58 0x1fffffff - 0x00080000));
59 /* ARCS console environment variable is set to "g?" for
60 * graphics console, it is set to "d" for the first serial
61 * line and "d2" for the second serial line.
62 *
63 * Need to check if the case is 'g' but no keyboard:
64 * (ConsoleIn/Out = serial)
65 */
66 ctype = ArcGetEnvironmentVariable("console");
67 cserial = ArcGetEnvironmentVariable("ConsoleOut");
68
69 if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
70 static char options[8];
71 char *baud = ArcGetEnvironmentVariable("dbaud");
72 if (baud)
73 strcpy(options, baud);
74 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
75 baud ? options : NULL);
76 } else if (!ctype || *ctype != 'g') {
77 /* Use ARC if we don't want serial ('d') or graphics ('g'). */
78 prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
79 add_preferred_console("arc", 0, NULL);
80 }
81
82 #if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE)
83 {
84 ULONG *gfxinfo;
85 ULONG * (*__vec)(void) = (void *) (long)
86 *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20));
87
88 gfxinfo = __vec();
89 sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000
90 && gfxinfo[1] <= 0xc0000000)
91 ? gfxinfo[1] - 0xa0000000 : 0);
92
93 /* newport addresses? */
94 if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) {
95 conswitchp = &newport_con;
96 }
97 }
98 #endif
99 }
100