LXR linux/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
  31const 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 */
  41void __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
  67void __init prom_free_prom_memory(void)
  68{
  69}
  70