Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
prom.c
Go to the documentation of this file.
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 /* [[email protected]] 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
62 #else
63 #error Unknown NEC board
64 #endif
65 }
66 
68 {
69 }