2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/string.h>
12 #include <asm/addrspace.h>
13 #include <asm/fw/fw.h>
19 void __init fw_init_cmdline(void)
23 /* Validate command line parameters. */
24 if ((fw_arg0 >= CKSEG0) || (fw_arg1 < CKSEG0)) {
28 fw_argc = (fw_arg0 & 0x0000ffff);
29 _fw_argv = (int *)fw_arg1;
32 /* Validate environment pointer. */
36 _fw_envp = (int *)fw_arg2;
38 for (i = 1; i < fw_argc; i++) {
39 strlcat(arcs_cmdline, fw_argv(i), COMMAND_LINE_SIZE);
40 if (i < (fw_argc - 1))
41 strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
45 char * __init fw_getcmdline(void)
47 return &(arcs_cmdline[0]);
50 char *fw_getenv(char *envname)
54 if (_fw_envp != NULL) {
56 * Return a pointer to the given environment variable.
57 * YAMON uses "name", "value" pairs, while U-Boot uses
60 int i, yamon, index = 0;
62 yamon = (strchr(fw_envp(index), '=') == NULL);
65 while (fw_envp(index)) {
66 if (strncmp(envname, fw_envp(index), i) == 0) {
68 result = fw_envp(index + 1);
70 } else if (fw_envp(index)[i] == '=') {
71 result = (fw_envp(index + 1) + i);
76 /* Increment array index. */
87 unsigned long fw_getenvl(char *envname)
89 unsigned long envl = 0UL;
94 str = fw_getenv(envname);
96 tmp = kstrtol(str, 0, &val);
97 envl = (unsigned long)val;