diff options
Diffstat (limited to 'arch/mips/au1000/csb250/init.c')
| -rw-r--r-- | arch/mips/au1000/csb250/init.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/mips/au1000/csb250/init.c b/arch/mips/au1000/csb250/init.c new file mode 100644 index 000000000000..4320057fc439 --- /dev/null +++ b/arch/mips/au1000/csb250/init.c @@ -0,0 +1,95 @@ +/* + * + * 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> +#include <linux/sched.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; +} |