| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * BRIEF MODULE DESCRIPTION |
| 4 | * Cogent CSB250 board setup |
| 5 | * |
| 6 | * Copyright 2002 Cogent Computer Systems, Inc. |
| 7 | * dan@embeddededge.com |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License as published by the |
| 11 | * Free Software Foundation; either version 2 of the License, or (at your |
| 12 | * option) any later version. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 15 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 16 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 17 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 20 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 21 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along |
| 26 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | */ |
| 29 | |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/mm.h> |
| 32 | #include <linux/sched.h> |
| 33 | #include <linux/bootmem.h> |
| 34 | #include <asm/addrspace.h> |
| 35 | #include <asm/bootinfo.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/sched.h> |
| 39 | |
| 40 | int prom_argc; |
| 41 | char **prom_argv, **prom_envp; |
| 42 | extern void __init prom_init_cmdline(void); |
| 43 | extern char *prom_getenv(char *envname); |
| 44 | |
| 45 | /* When we get initrd working someday......... |
| 46 | */ |
| 47 | int my_initrd_start, my_initrd_size; |
| 48 | |
| 49 | /* Start arguments and environment. |
| 50 | */ |
| 51 | static char *csb_env[2]; |
| 52 | static char *csb_arg[4]; |
| 53 | static char *arg1 = "console=ttyS3,38400"; |
| 54 | static char *arg2 = "root=/dev/nfs rw ip=any"; |
| 55 | static char *env1 = "ethaddr=00:30:23:50:00:00"; |
| 56 | |
| 57 | const char *get_system_type(void) |
| 58 | { |
| 59 | return "Cogent CSB250"; |
| 60 | } |
| 61 | |
| 62 | int __init prom_init(int argc, char **argv, char **envp, int *prom_vec) |
| 63 | { |
| 64 | unsigned char *memsize_str; |
| 65 | unsigned long memsize; |
| 66 | |
| 67 | /* We use a0 and a1 to pass initrd start and size. |
| 68 | */ |
| 69 | if (((uint) argc > 0) && ((uint)argv > 0)) { |
| 70 | my_initrd_start = (uint)argc; |
| 71 | my_initrd_size = (uint)argv; |
| 72 | } |
| 73 | |
| 74 | /* First argv is ignored. |
| 75 | */ |
| 76 | prom_argc = 3; |
| 77 | prom_argv = csb_arg; |
| 78 | prom_envp = csb_env; |
| 79 | csb_arg[1] = arg1; |
| 80 | csb_arg[2] = arg2; |
| 81 | csb_env[0] = env1; |
| 82 | |
| 83 | mips_machgroup = MACH_GROUP_ALCHEMY; |
| 84 | mips_machtype = MACH_CSB250; |
| 85 | |
| 86 | prom_init_cmdline(); |
| 87 | memsize_str = prom_getenv("memsize"); |
| 88 | if (!memsize_str) { |
| 89 | memsize = 0x02000000; |
| 90 | } else { |
| 91 | memsize = simple_strtol(memsize_str, NULL, 0); |
| 92 | } |
| 93 | add_memory_region(0, memsize, BOOT_MEM_RAM); |
| 94 | return 0; |
| 95 | } |