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
prom_init_cmdline(void)29 void __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
prom_getenv(char * envname)45 char __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
prom_free_prom_memory(void)62 void __init prom_free_prom_memory(void)
63 {
64 }
65