/* * * BRIEF MODULE DESCRIPTION *    PROM library initialisation code, assuming a version of *    pmon is the boot code. * * Copyright 2000 MontaVista Software Inc. * Author: MontaVista Software, Inc. *         	ppopov@mvista.com or source@mvista.com * * This file was derived from Carsten Langgaard's  * arch/mips/mips-boards/xx files. * * Carsten Langgaard, carstenl@mips.com * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved. * *  This program is free software; you can redistribute  it and/or modify it *  under  the terms of  the GNU General  Public License as published by the *  Free Software Foundation;  either version 2 of the  License, or (at your *  option) any later version. * *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT, *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *  You should have received a copy of the  GNU General Public License along *  with this program; if not, write  to the Free Software Foundation, Inc., *  675 Mass Ave, Cambridge, MA 02139, USA. */#include <linux/config.h>#include <linux/kernel.h>#include <linux/init.h>#include <linux/string.h>#include <asm/bootinfo.h>/* #define DEBUG_CMDLINE */char arcs_cmdline[COMMAND_LINE_SIZE];extern int prom_argc;extern char **prom_argv, **prom_envp;typedef struct{    char *name;/*    char *val; */}t_env_var;char * __init prom_getcmdline(void){	return &(arcs_cmdline[0]);}void  __init prom_init_cmdline(void){	char *cp;	int actr;	actr = 1; /* Always ignore argv[0] */	cp = &(arcs_cmdline[0]);	while(actr < prom_argc) {	        strcpy(cp, prom_argv[actr]);		cp += strlen(prom_argv[actr]);		*cp++ = ' ';		actr++;	}	if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */		--cp;	*cp = '\0';}char *prom_getenv(char *envname){	/*	 * Return a pointer to the given environment variable.	 * Environment variables are stored in the form of "memsize=64".	 */	t_env_var *env = (t_env_var *)prom_envp;	int i;	i = strlen(envname);	while(env->name) {		if(strncmp(envname, env->name, i) == 0) {			return(env->name + strlen(envname) + 1);		}		env++;	}	return(NULL);}static inline unsigned char str2hexnum(unsigned char c){	if(c >= '0' && c <= '9')	return c - '0';	if(c >= 'a' && c <= 'f')	return c - 'a' + 10;	return 0; /* foo */}int __init page_is_ram(unsigned long pagenr){    return 1;}void prom_free_prom_memory (void){}unsigned long __init prom_get_memsize(void){	char *memsize_str;	unsigned int memsize;	memsize_str = prom_getenv("memsize");	if (!memsize_str) {#ifdef CONFIG_MIPS_ITE8172		memsize = 32; #elif defined(CONFIG_MIPS_IVR)		memsize = 64; #else		memsize = 8; #endif		printk("memsize unknown: setting to %dMB\n", memsize);	} else {		printk("memsize: %s\n", memsize_str);		memsize = simple_strtol(memsize_str, NULL, 0);	}	return memsize;}