LXR linux/arch/mips/pnx833x/common/prom.c

   1/*
   2 *  prom.c:
   3 *
   4 *  Copyright 2008 NXP Semiconductors
   5 *        Chris Steel <chris.steel@nxp.com>
   6 *    Daniel Laird <daniel.j.laird@nxp.com>
   7 *
   8 *  Based on software written by:
   9 *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
  10 *
  11 *  This program is free software; you can redistribute it and/or modify
  12 *  it under the terms of the GNU General Public License as published by
  13 *  the Free Software Foundation; either version 2 of the License, or
  14 *  (at your option) any later version.
  15 *
  16 *  This program is distributed in the hope that it will be useful,
  17 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 *  GNU General Public License for more details.
  20 *
  21 *  You should have received a copy of the GNU General Public License
  22 *  along with this program; if not, write to the Free Software
  23 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25#include <linux/init.h>
  26#include <asm/bootinfo.h>
  27#include <linux/string.h>
  28
  29void __init prom_init_cmdline(void)
  30{
  31        int argc = fw_arg0;
  32        char **argv = (char **)fw_arg1;
  33        char *c = &(arcs_cmdline[0]);
  34        int i;
  35
  36        for (i = 1; i < argc; i++) {
  37                strcpy(c, argv[i]);
  38                c += strlen(argv[i]);
  39                if (i < argc-1)
  40                        *c++ = ' ';
  41        }
  42        *c = 0;
  43}
  44
  45char __init *prom_getenv(char *envname)
  46{
  47        extern char **prom_envp;
  48        char **env = prom_envp;
  49        int i;
  50
  51        i = strlen(envname);
  52
  53        while (*env) {
  54                if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=')
  55                        return *env + i + 1;
  56                env++;
  57        }
  58
  59        return 0;
  60}
  61
  62void __init prom_free_prom_memory(void)
  63{
  64}
  65