3 * BRIEF MODULE DESCRIPTION
4 * PROM library initialisation code, assuming a version of
5 * pmon is the boot code.
7 * Copyright 2000,2001 MontaVista Software Inc.
8 * Author: MontaVista Software, Inc.
9 * ppopov@mvista.com or source@mvista.com
11 * This file was derived from Carsten Langgaard's
12 * arch/mips/mips-boards/xx files.
14 * Carsten Langgaard, carstenl@mips.com
15 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License as published by the
19 * Free Software Foundation; either version 2 of the License, or (at your
20 * option) any later version.
22 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
25 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
29 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * You should have received a copy of the GNU General Public License along
34 * with this program; if not, write to the Free Software Foundation, Inc.,
35 * 675 Mass Ave, Cambridge, MA 02139, USA.
38 #include <linux/module.h>
39 #include <linux/kernel.h>
40 #include <linux/init.h>
41 #include <linux/string.h>
43 #include <asm/bootinfo.h>
45 /* #define DEBUG_CMDLINE */
48 extern char **prom_argv, **prom_envp;
57 char * prom_getcmdline(void)
59 return &(arcs_cmdline[0]);
62 void prom_init_cmdline(void)
67 actr = 1; /* Always ignore argv[0] */
69 cp = &(arcs_cmdline[0]);
70 while(actr < prom_argc) {
71 strcpy(cp, prom_argv[actr]);
72 cp += strlen(prom_argv[actr]);
76 if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
84 char *prom_getenv(char *envname)
87 * Return a pointer to the given environment variable.
88 * Environment variables are stored in the form of "memsize=64".
91 t_env_var *env = (t_env_var *)prom_envp;
97 if(strncmp(envname, env->name, i) == 0) {
98 return(env->name + strlen(envname) + 1);
105 inline unsigned char str2hexnum(unsigned char c)
107 if(c >= '0' && c <= '9')
109 if(c >= 'a' && c <= 'f')
111 if(c >= 'A' && c <= 'F')
116 inline void str2eaddr(unsigned char *ea, unsigned char *str)
120 for(i = 0; i < 6; i++) {
123 if((*str == '.') || (*str == ':'))
125 num = str2hexnum(*str++) << 4;
126 num |= (str2hexnum(*str++));
131 int get_ethernet_addr(char *ethernet_addr)
135 ethaddr_str = prom_getenv("ethaddr");
137 printk("ethaddr not set in boot prom\n");
140 str2eaddr(ethernet_addr, ethaddr_str);
146 printk("get_ethernet_addr: ");
148 printk("%02x:", (unsigned char)*(ethernet_addr+i));
149 printk("%02x\n", *(ethernet_addr+i));
156 unsigned long __init prom_free_prom_memory(void)
161 EXPORT_SYMBOL(prom_getcmdline);
162 EXPORT_SYMBOL(get_ethernet_addr);
163 EXPORT_SYMBOL(str2eaddr);