mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
103 lines
1.9 KiB
103 lines
1.9 KiB
/* |
|
* This file is subject to the terms and conditions of the GNU General Public |
|
* License. See the file "COPYING" in the main directory of this archive |
|
* for more details. |
|
* |
|
* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. |
|
*/ |
|
#include <linux/init.h> |
|
#include <linux/kernel.h> |
|
#include <linux/string.h> |
|
|
|
#include <asm/addrspace.h> |
|
#include <asm/fw/fw.h> |
|
|
|
int fw_argc; |
|
int *_fw_argv; |
|
int *_fw_envp; |
|
|
|
#ifndef CONFIG_HAVE_PLAT_FW_INIT_CMDLINE |
|
void __init fw_init_cmdline(void) |
|
{ |
|
int i; |
|
|
|
/* Validate command line parameters. */ |
|
if ((fw_arg0 >= CKSEG0) || (fw_arg1 < CKSEG0)) { |
|
fw_argc = 0; |
|
_fw_argv = NULL; |
|
} else { |
|
fw_argc = (fw_arg0 & 0x0000ffff); |
|
_fw_argv = (int *)fw_arg1; |
|
} |
|
|
|
/* Validate environment pointer. */ |
|
if (fw_arg2 < CKSEG0) |
|
_fw_envp = NULL; |
|
else |
|
_fw_envp = (int *)fw_arg2; |
|
|
|
for (i = 1; i < fw_argc; i++) { |
|
strlcat(arcs_cmdline, fw_argv(i), COMMAND_LINE_SIZE); |
|
if (i < (fw_argc - 1)) |
|
strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); |
|
} |
|
} |
|
#endif |
|
|
|
char * __init fw_getcmdline(void) |
|
{ |
|
return &(arcs_cmdline[0]); |
|
} |
|
|
|
char *fw_getenv(char *envname) |
|
{ |
|
char *result = NULL; |
|
|
|
if (_fw_envp != NULL) { |
|
/* |
|
* Return a pointer to the given environment variable. |
|
* YAMON uses "name", "value" pairs, while U-Boot uses |
|
* "name=value". |
|
*/ |
|
int i, yamon, index = 0; |
|
|
|
yamon = (strchr(fw_envp(index), '=') == NULL); |
|
i = strlen(envname); |
|
|
|
while (fw_envp(index)) { |
|
if (strncmp(envname, fw_envp(index), i) == 0) { |
|
if (yamon) { |
|
result = fw_envp(index + 1); |
|
break; |
|
} else if (fw_envp(index)[i] == '=') { |
|
result = fw_envp(index) + i + 1; |
|
break; |
|
} |
|
} |
|
|
|
/* Increment array index. */ |
|
if (yamon) |
|
index += 2; |
|
else |
|
index += 1; |
|
} |
|
} |
|
|
|
return result; |
|
} |
|
|
|
unsigned long fw_getenvl(char *envname) |
|
{ |
|
unsigned long envl = 0UL; |
|
char *str; |
|
int tmp; |
|
|
|
str = fw_getenv(envname); |
|
if (str) { |
|
tmp = kstrtoul(str, 0, &envl); |
|
if (tmp) |
|
envl = 0; |
|
} |
|
|
|
return envl; |
|
}
|
|
|