96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
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/*
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*
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* BRIEF MODULE DESCRIPTION
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* Cogent CSB250 board setup
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*
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* Copyright 2002 Cogent Computer Systems, Inc.
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* dan@embeddededge.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/bootmem.h>
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#include <asm/addrspace.h>
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#include <asm/bootinfo.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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int prom_argc;
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char **prom_argv, **prom_envp;
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extern void __init prom_init_cmdline(void);
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extern char *prom_getenv(char *envname);
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/* When we get initrd working someday.........
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*/
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int my_initrd_start, my_initrd_size;
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/* Start arguments and environment.
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*/
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static char *csb_env[2];
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static char *csb_arg[4];
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static char *arg1 = "console=ttyS3,38400";
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static char *arg2 = "root=/dev/nfs rw ip=any";
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static char *env1 = "ethaddr=00:30:23:50:00:00";
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const char *get_system_type(void)
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{
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return "Cogent CSB250";
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}
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int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
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{
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unsigned char *memsize_str;
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unsigned long memsize;
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/* We use a0 and a1 to pass initrd start and size.
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*/
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if (((uint) argc > 0) && ((uint)argv > 0)) {
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my_initrd_start = (uint)argc;
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my_initrd_size = (uint)argv;
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}
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/* First argv is ignored.
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*/
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prom_argc = 3;
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prom_argv = csb_arg;
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prom_envp = csb_env;
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csb_arg[1] = arg1;
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csb_arg[2] = arg2;
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csb_env[0] = env1;
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mips_machgroup = MACH_GROUP_ALCHEMY;
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mips_machtype = MACH_CSB250;
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prom_init_cmdline();
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memsize_str = prom_getenv("memsize");
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if (!memsize_str) {
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memsize = 0x02000000;
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} else {
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memsize = simple_strtol(memsize_str, NULL, 0);
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}
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add_memory_region(0, memsize, BOOT_MEM_RAM);
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return 0;
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}
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