3 * BRIEF MODULE DESCRIPTION
4 * PROM library initialisation code, supports YAMON and U-Boot.
6 * Copyright 2000, 2001, 2006 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com
10 * This file was derived from Carsten Langgaard's
11 * arch/mips/mips-boards/xx files.
13 * Carsten Langgaard, carstenl@mips.com
14 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the
18 * Free Software Foundation; either version 2 of the License, or (at your
19 * option) any later version.
21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
24 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
27 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
28 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * You should have received a copy of the GNU General Public License along
33 * with this program; if not, write to the Free Software Foundation, Inc.,
34 * 675 Mass Ave, Cambridge, MA 02139, USA.
37 #include <linux/module.h>
38 #include <linux/kernel.h>
39 #include <linux/init.h>
40 #include <linux/string.h>
42 #include <asm/bootinfo.h>
44 /* #define DEBUG_CMDLINE */
47 extern char **prom_argv
, **prom_envp
;
50 char * __init_or_module
prom_getcmdline(void)
52 return &(arcs_cmdline
[0]);
55 void prom_init_cmdline(void)
60 actr
= 1; /* Always ignore argv[0] */
62 cp
= &(arcs_cmdline
[0]);
63 while(actr
< prom_argc
) {
64 strcpy(cp
, prom_argv
[actr
]);
65 cp
+= strlen(prom_argv
[actr
]);
69 if (cp
!= &(arcs_cmdline
[0])) /* get rid of trailing space */
77 char *prom_getenv(char *envname
)
80 * Return a pointer to the given environment variable.
81 * YAMON uses "name", "value" pairs, while U-Boot uses "name=value".
84 char **env
= prom_envp
;
85 int i
= strlen(envname
);
86 int yamon
= (*env
&& strchr(*env
, '=') == NULL
);
90 if (strcmp(envname
, *env
++) == 0)
93 if (strncmp(envname
, *env
, i
) == 0 && (*env
)[i
] == '=')
101 inline unsigned char str2hexnum(unsigned char c
)
103 if(c
>= '0' && c
<= '9')
105 if(c
>= 'a' && c
<= 'f')
107 if(c
>= 'A' && c
<= 'F')
112 inline void str2eaddr(unsigned char *ea
, unsigned char *str
)
116 for(i
= 0; i
< 6; i
++) {
119 if((*str
== '.') || (*str
== ':'))
121 num
= str2hexnum(*str
++) << 4;
122 num
|= (str2hexnum(*str
++));
127 int get_ethernet_addr(char *ethernet_addr
)
131 ethaddr_str
= prom_getenv("ethaddr");
133 printk("ethaddr not set in boot prom\n");
136 str2eaddr(ethernet_addr
, ethaddr_str
);
142 printk("get_ethernet_addr: ");
144 printk("%02x:", (unsigned char)*(ethernet_addr
+i
));
145 printk("%02x\n", *(ethernet_addr
+i
));
152 void __init
prom_free_prom_memory(void)
156 EXPORT_SYMBOL(prom_getcmdline
);
157 EXPORT_SYMBOL(get_ethernet_addr
);
158 EXPORT_SYMBOL(str2eaddr
);