94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* Cogent CSB250 board setup
|
|
*
|
|
* Copyright 2002 Cogent Computer Systems, Inc.
|
|
* dan@embeddededge.com
|
|
*
|
|
* 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/init.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/bootmem.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
|
|
int prom_argc;
|
|
char **prom_argv, **prom_envp;
|
|
extern void __init prom_init_cmdline(void);
|
|
extern char *prom_getenv(char *envname);
|
|
|
|
/* When we get initrd working someday.........
|
|
*/
|
|
int my_initrd_start, my_initrd_size;
|
|
|
|
/* Start arguments and environment.
|
|
*/
|
|
static char *csb_env[2];
|
|
static char *csb_arg[4];
|
|
static char *arg1 = "console=ttyS3,38400";
|
|
static char *arg2 = "root=/dev/nfs rw ip=any";
|
|
static char *env1 = "ethaddr=00:30:23:50:00:00";
|
|
|
|
const char *get_system_type(void)
|
|
{
|
|
return "Cogent CSB250";
|
|
}
|
|
|
|
int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
|
|
{
|
|
unsigned char *memsize_str;
|
|
unsigned long memsize;
|
|
|
|
/* We use a0 and a1 to pass initrd start and size.
|
|
*/
|
|
if (((uint) argc > 0) && ((uint)argv > 0)) {
|
|
my_initrd_start = (uint)argc;
|
|
my_initrd_size = (uint)argv;
|
|
}
|
|
|
|
/* First argv is ignored.
|
|
*/
|
|
prom_argc = 3;
|
|
prom_argv = csb_arg;
|
|
prom_envp = csb_env;
|
|
csb_arg[1] = arg1;
|
|
csb_arg[2] = arg2;
|
|
csb_env[0] = env1;
|
|
|
|
mips_machgroup = MACH_GROUP_ALCHEMY;
|
|
mips_machtype = MACH_CSB250;
|
|
|
|
prom_init_cmdline();
|
|
memsize_str = prom_getenv("memsize");
|
|
if (!memsize_str) {
|
|
memsize = 0x02000000;
|
|
} else {
|
|
memsize = simple_strtol(memsize_str, NULL, 0);
|
|
}
|
|
add_memory_region(0, memsize, BOOT_MEM_RAM);
|
|
return 0;
|
|
}
|