arch/mips/emma/common/prom.c

   1 /*
   2  *  Copyright (C) NEC Electronics Corporation 2004-2006
   3  *
   4  *  This file is based on the arch/mips/ddb5xxx/common/prom.c
   5  *
   6  *      Copyright 2001 MontaVista Software Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22 #include <linux/init.h>
  23 #include <linux/mm.h>
  24 #include <linux/sched.h>
  25 #include <linux/bootmem.h>
  26
  27 #include <asm/addrspace.h>
  28 #include <asm/bootinfo.h>
  29 #include <asm/emma/emma2rh.h>
  30
  31 const char *get_system_type(void)
  32 {
  33 #ifdef CONFIG_NEC_MARKEINS
  34         return "NEC EMMA2RH Mark-eins";
  35 #else
  36 #error  Unknown NEC board
  37 #endif
  38 }
  39
  40 /* [jsun@junsun.net] PMON passes arguments in C main() style */
  41 void __init prom_init(void)
  42 {
  43         int argc = fw_arg0;
  44         char **arg = (char **)fw_arg1;
  45         int i;
  46
  47         /* if user passes kernel args, ignore the default one */
  48         if (argc > 1)
  49                 arcs_cmdline[0] = '\0';
  50
  51         /* arg[0] is "g", the rest is boot parameters */
  52         for (i = 1; i < argc; i++) {
  53                 if (strlen(arcs_cmdline) + strlen(arg[i]) + 1
  54                     >= sizeof(arcs_cmdline))
  55                         break;
  56                 strcat(arcs_cmdline, arg[i]);
  57                 strcat(arcs_cmdline, " ");
  58         }
  59
  60 #ifdef CONFIG_NEC_MARKEINS
  61         add_memory_region(0, EMMA2RH_RAM_SIZE, BOOT_MEM_RAM);
  62 #else
  63 #error  Unknown NEC board
  64 #endif
  65 }
  66
  67 void __init prom_free_prom_memory(void)
  68 {
  69 }