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Linux/arch/mips/emma/common/prom.c

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  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 }
 70 

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