1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * ip22-setup.c: SGI specific setup, including init of the feature struct. |
4 | * |
5 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
6 | * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org) |
7 | */ |
8 | #include <linux/init.h> |
9 | #include <linux/kernel.h> |
10 | #include <linux/kdev_t.h> |
11 | #include <linux/types.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 | extern void ip22_be_init(void) __init; |
30 | |
31 | void __init plat_mem_setup(void) |
32 | { |
33 | char *ctype; |
34 | char *cserial; |
35 | |
36 | board_be_init = ip22_be_init; |
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(offset: 0x00080000, |
55 | size: 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. |
59 | * |
60 | * Need to check if the case is 'g' but no keyboard: |
61 | * (ConsoleIn/Out = serial) |
62 | */ |
63 | ctype = ArcGetEnvironmentVariable("console" ); |
64 | cserial = ArcGetEnvironmentVariable("ConsoleOut" ); |
65 | |
66 | if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) { |
67 | static char options[8] __initdata; |
68 | char *baud = ArcGetEnvironmentVariable("dbaud" ); |
69 | if (baud) |
70 | strcpy(p: options, q: baud); |
71 | add_preferred_console(name: "ttyS" , idx: *(ctype + 1) == '2' ? 1 : 0, |
72 | options: baud ? options : NULL); |
73 | } else if (!ctype || *ctype != 'g') { |
74 | /* Use ARC if we don't want serial ('d') or graphics ('g'). */ |
75 | prom_flags |= PROM_FLAG_USE_AS_CONSOLE; |
76 | add_preferred_console(name: "arc" , idx: 0, NULL); |
77 | } |
78 | } |
79 | |