| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * PROM library initialisation code. |
| 7 | * |
| 8 | * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) |
| 9 | */ |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/kernel.h> |
| 12 | |
| 13 | #include <asm/bootinfo.h> |
| 14 | #include <asm/sgialib.h> |
| 15 | |
| 16 | #undef DEBUG_PROM_INIT |
| 17 | |
| 18 | /* Master romvec interface. */ |
| 19 | struct linux_romvec *romvec; |
| 20 | int prom_argc; |
| 21 | LONG *_prom_argv, *_prom_envp; |
| 22 | |
| 23 | void __init prom_init(void) |
| 24 | { |
| 25 | PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK; |
| 26 | romvec = ROMVECTOR; |
| 27 | prom_argc = fw_arg0; |
| 28 | _prom_argv = (LONG *) fw_arg1; |
| 29 | _prom_envp = (LONG *) fw_arg2; |
| 30 | |
| 31 | if (pb->magic != 0x53435241) { |
| 32 | prom_printf("Aieee, bad prom vector magic %08lx\n", pb->magic); |
| 33 | while(1) |
| 34 | ; |
| 35 | } |
| 36 | |
| 37 | prom_init_cmdline(); |
| 38 | prom_identify_arch(); |
| 39 | printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n", |
| 40 | pb->ver, pb->rev); |
| 41 | prom_meminit(); |
| 42 | |
| 43 | #ifdef DEBUG_PROM_INIT |
| 44 | prom_printf("Press a key to reboot\n"); |
| 45 | prom_getchar(); |
| 46 | ArcEnterInteractiveMode(); |
| 47 | #endif |
| 48 | } |