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MIPS: Loongson: Cleanup machtype support
[net-next-2.6.git] / arch / mips / loongson / common / machtype.c
1 /*
2  * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
3  * Author: Wu Zhangjin, wuzj@lemote.com
4  *
5  * Copyright (c) 2009 Zhang Le <r0bertz@gentoo.org>
6  *
7  * This program is free software; you can redistribute  it and/or modify it
8  * under  the terms of  the GNU General  Public License as published by the
9  * Free Software Foundation;  either version 2 of the  License, or (at your
10  * option) any later version.
11  */
12 #include <linux/errno.h>
13 #include <asm/bootinfo.h>
14
15 #include <loongson.h>
16 #include <machine.h>
17
18 /* please ensure the length of the machtype string is less than 50 */
19 #define MACHTYPE_LEN 50
20
21 static const char *system_types[] = {
22         [MACH_LOONGSON_UNKNOWN]         "unknown loongson machine",
23         [MACH_LEMOTE_FL2E]              "lemote-fuloong-2e-box",
24         [MACH_LEMOTE_FL2F]              "lemote-fuloong-2f-box",
25         [MACH_LEMOTE_ML2F7]             "lemote-mengloong-2f-7inches",
26         [MACH_LEMOTE_YL2F89]            "lemote-yeeloong-2f-8.9inches",
27         [MACH_DEXXON_GDIUM2F10]         "dexxon-gidum-2f-10inches",
28         [MACH_LOONGSON_END]             NULL,
29 };
30
31 const char *get_system_type(void)
32 {
33         return system_types[mips_machtype];
34 }
35
36 void __init prom_init_machtype(void)
37 {
38         char *p, str[MACHTYPE_LEN];
39         int machtype = MACH_LEMOTE_FL2E;
40
41         mips_machtype = LOONGSON_MACHTYPE;
42
43         p = strstr(arcs_cmdline, "machtype=");
44         if (!p)
45                 return;
46         p += strlen("machtype=");
47         strncpy(str, p, MACHTYPE_LEN);
48         p = strstr(str, " ");
49         if (p)
50                 *p = '\0';
51
52         for (; system_types[machtype]; machtype++)
53                 if (strstr(system_types[machtype], str)) {
54                         mips_machtype = machtype;
55                         break;
56                 }
57 }