init.c
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上传日期:2013-04-10
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文件大小:2k
- /*
- *
- * BRIEF MODULE DESCRIPTION
- * PB1500 board setup
- *
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- * ppopov@mvista.com or source@mvista.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);
- const char *get_system_type(void)
- {
- return "Alchemy Pb1500";
- }
- int __init prom_init(int argc, char **argv, char **envp, int *prom_vec)
- {
- unsigned char *memsize_str;
- unsigned long memsize;
- prom_argc = argc;
- prom_argv = argv;
- prom_envp = envp;
- mips_machgroup = MACH_GROUP_ALCHEMY;
- mips_machtype = MACH_PB1500;
- prom_init_cmdline();
- memsize_str = prom_getenv("memsize");
- if (!memsize_str) {
- memsize = 0x04000000;
- } else {
- memsize = simple_strtol(memsize_str, NULL, 0);
- }
- add_memory_region(0, memsize, BOOT_MEM_RAM);
- return 0;
- }