137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
|
/*
|
||
|
|
*
|
||
|
|
* 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>
|
||
|
|
|
||
|
|
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 */
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned long __init prom_free_prom_memory(void)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|