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1da177e4 LT |
1 | /* |
2 | * ip22-setup.c: SGI specific setup, including init of the feature struct. | |
3 | * | |
79add627 | 4 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
5 | * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org) |
6 | */ | |
1da177e4 LT |
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> | |
1da177e4 LT |
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 | ||
1da177e4 | 29 | extern void ip22_be_init(void) __init; |
1da177e4 | 30 | |
2925aba4 | 31 | void __init plat_mem_setup(void) |
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32 | { |
33 | char *ctype; | |
e9feeb20 | 34 | char *cserial; |
1da177e4 LT |
35 | |
36 | board_be_init = ip22_be_init; | |
1da177e4 LT |
37 | |
38 | /* Init the INDY HPC I/O controller. Need to call this before | |
39 | * fucking with the memory controller because it needs to know the | |
40 | * boardID and whether this is a Guiness or a FullHouse machine. | |
41 | */ | |
42 | sgihpc_init(); | |
43 | ||
44 | /* Init INDY memory controller. */ | |
45 | sgimc_init(); | |
46 | ||
47 | #ifdef CONFIG_BOARD_SCACHE | |
48 | /* Now enable boardcaches, if any. */ | |
49 | indy_sc_init(); | |
50 | #endif | |
51 | ||
52 | /* Set EISA IO port base for Indigo2 | |
53 | * ioremap cannot fail */ | |
54 | set_io_port_base((unsigned long)ioremap(0x00080000, | |
55 | 0x1fffffff - 0x00080000)); | |
56 | /* ARCS console environment variable is set to "g?" for | |
57 | * graphics console, it is set to "d" for the first serial | |
58 | * line and "d2" for the second serial line. | |
e9feeb20 RB |
59 | * |
60 | * Need to check if the case is 'g' but no keyboard: | |
61 | * (ConsoleIn/Out = serial) | |
1da177e4 LT |
62 | */ |
63 | ctype = ArcGetEnvironmentVariable("console"); | |
e9feeb20 RB |
64 | cserial = ArcGetEnvironmentVariable("ConsoleOut"); |
65 | ||
66 | if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { | |
599a8945 | 67 | static char options[8] __initdata; |
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68 | char *baud = ArcGetEnvironmentVariable("dbaud"); |
69 | if (baud) | |
70 | strcpy(options, baud); | |
71 | add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0, | |
72 | baud ? options : NULL); | |
73 | } else if (!ctype || *ctype != 'g') { | |
e9feeb20 | 74 | /* Use ARC if we don't want serial ('d') or graphics ('g'). */ |
1da177e4 LT |
75 | prom_flags |= PROM_FLAG_USE_AS_CONSOLE; |
76 | add_preferred_console("arc", 0, NULL); | |
77 | } | |
1da177e4 | 78 | } |