release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/loongson/common/machtype.c

   1 /*
   2  * Copyright (C) 2009 Lemote Inc.
   3  * Author: Wu Zhangjin, wuzhangjin@gmail.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-gdium-2f",
  28         [MACH_LEMOTE_NAS]               "lemote-nas-2f",
  29         [MACH_LEMOTE_LL2F]              "lemote-lynloong-2f",
  30         [MACH_LOONGSON_END]             NULL,
  31 };
  32
  33 const char *get_system_type(void)
  34 {
  35         return system_types[mips_machtype];
  36 }
  37
  38 void __weak __init mach_prom_init_machtype(void)
  39 {
  40 }
  41
  42 void __init prom_init_machtype(void)
  43 {
  44         char *p, str[MACHTYPE_LEN + 1];
  45         int machtype = MACH_LEMOTE_FL2E;
  46
  47         mips_machtype = LOONGSON_MACHTYPE;
  48
  49         p = strstr(arcs_cmdline, "machtype=");
  50         if (!p) {
  51                 mach_prom_init_machtype();
  52                 return;
  53         }
  54         p += strlen("machtype=");
  55         strncpy(str, p, MACHTYPE_LEN);
  56         str[MACHTYPE_LEN] = '\0';
  57         p = strstr(str, " ");
  58         if (p)
  59                 *p = '\0';
  60
  61         for (; system_types[machtype]; machtype++)
  62                 if (strstr(system_types[machtype], str)) {
  63                         mips_machtype = machtype;
  64                         break;
  65                 }
  66 }