release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/loongson/lemote-2f/machtype.c

   1 /*
   2  * Copyright (C) 2009 Lemote Inc.
   3  * Author: Wu Zhangjin, wuzhangjin@gmail.com
   4  *
   5  * This program is free software; you can redistribute  it and/or modify it
   6  * under  the terms of  the GNU General  Public License as published by the
   7  * Free Software Foundation;  either version 2 of the  License, or (at your
   8  * option) any later version.
   9  */
  10 #include <asm/bootinfo.h>
  11
  12 #include <loongson.h>
  13
  14 void __init mach_prom_init_machtype(void)
  15 {
  16         /* We share the same kernel image file among Lemote 2F family
  17          * of machines, and provide the machtype= kernel command line
  18          * to users to indicate their machine, this command line will
  19          * be passed by the latest PMON automatically. and fortunately,
  20          * up to now, we can get the machine type from the PMON_VER=
  21          * commandline directly except the NAS machine, In the old
  22          * machines, this will help the users a lot.
  23          *
  24          * If no "machtype=" passed, get machine type from "PMON_VER=".
  25          *      PMON_VER=LM8089         Lemote 8.9'' netbook
  26          *               LM8101         Lemote 10.1'' netbook
  27          *      (The above two netbooks have the same kernel support)
  28          *               LM6XXX         Lemote FuLoong(2F) box series
  29          *               LM9XXX         Lemote LynLoong PC series
  30          */
  31         if (strstr(arcs_cmdline, "PMON_VER=LM")) {
  32                 if (strstr(arcs_cmdline, "PMON_VER=LM8"))
  33                         mips_machtype = MACH_LEMOTE_YL2F89;
  34                 else if (strstr(arcs_cmdline, "PMON_VER=LM6"))
  35                         mips_machtype = MACH_LEMOTE_FL2F;
  36                 else if (strstr(arcs_cmdline, "PMON_VER=LM9"))
  37                         mips_machtype = MACH_LEMOTE_LL2F;
  38                 else
  39                         mips_machtype = MACH_LEMOTE_NAS;
  40
  41                 strcat(arcs_cmdline, " machtype=");
  42                 strcat(arcs_cmdline, get_system_type());
  43                 strcat(arcs_cmdline, " ");
  44         }
  45 }