3 * BRIEF MODULE DESCRIPTION
4 * PROM library initialisation code, assuming a version of
5 * pmon is the boot code.
7 * Copyright 2000 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/kernel.h>
39 #include <linux/init.h>
40 #include <linux/string.h>
42 #include <asm/bootinfo.h>
45 extern char **prom_argv, **prom_envp;
54 char * __init prom_getcmdline(void)
56 return &(arcs_cmdline[0]);
59 void __init prom_init_cmdline(void)
64 actr = 1; /* Always ignore argv[0] */
66 cp = &(arcs_cmdline[0]);
67 while(actr < prom_argc) {
68 strcpy(cp, prom_argv[actr]);
69 cp += strlen(prom_argv[actr]);
73 if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
80 char *prom_getenv(char *envname)
83 * Return a pointer to the given environment variable.
84 * Environment variables are stored in the form of "memsize=64".
87 t_env_var *env = (t_env_var *)prom_envp;
93 if(strncmp(envname, env->name, i) == 0) {
94 return(env->name + strlen(envname) + 1);
101 static inline unsigned char str2hexnum(unsigned char c)
103 if(c >= '0' && c <= '9')
105 if(c >= 'a' && c <= 'f')
110 unsigned long __init prom_free_prom_memory(void)
115 unsigned long __init prom_get_memsize(void)
118 unsigned int memsize;
120 memsize_str = prom_getenv("memsize");
122 #ifdef CONFIG_MIPS_ITE8172
124 #elif defined(CONFIG_MIPS_IVR)
129 printk("memsize unknown: setting to %dMB\n", memsize);
131 printk("memsize: %s\n", memsize_str);
132 memsize = simple_strtol(memsize_str, NULL, 0);