3 * BRIEF MODULE DESCRIPTION
4 * PROM library initialisation code, assuming YAMON is the boot loader.
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;
56 char * prom_getcmdline(void)
58 return &(arcs_cmdline[0]);
61 void prom_init_cmdline(void)
66 actr = 1; /* Always ignore argv[0] */
68 cp = &(arcs_cmdline[0]);
69 while(actr < prom_argc) {
70 strcpy(cp, prom_argv[actr]);
71 cp += strlen(prom_argv[actr]);
75 if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
83 char *prom_getenv(char *envname)
86 * Return a pointer to the given environment variable.
89 t_env_var *env = (t_env_var *)prom_envp;
92 if (strcmp(envname, env->name) == 0)
99 inline unsigned char str2hexnum(unsigned char c)
101 if(c >= '0' && c <= '9')
103 if(c >= 'a' && c <= 'f')
105 if(c >= 'A' && c <= 'F')
110 inline void str2eaddr(unsigned char *ea, unsigned char *str)
114 for(i = 0; i < 6; i++) {
117 if((*str == '.') || (*str == ':'))
119 num = str2hexnum(*str++) << 4;
120 num |= (str2hexnum(*str++));
125 int get_ethernet_addr(char *ethernet_addr)
129 ethaddr_str = prom_getenv("ethaddr");
131 printk("ethaddr not set in boot prom\n");
134 str2eaddr(ethernet_addr, ethaddr_str);
140 printk("get_ethernet_addr: ");
142 printk("%02x:", (unsigned char)*(ethernet_addr+i));
143 printk("%02x\n", *(ethernet_addr+i));
150 unsigned long __init prom_free_prom_memory(void)
155 EXPORT_SYMBOL(prom_getcmdline);
156 EXPORT_SYMBOL(get_ethernet_addr);
157 EXPORT_SYMBOL(str2eaddr);