projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | * | |
| 79add627 | 8 | * Copyright (C) 1996 David S. Miller (davem@davemloft.net) |
| 1da177e4 LT |
9 | */ |
| 10 | #include <linux/init.h> | |
| 11 | #include <linux/kernel.h> | |
| 12 | ||
| 13 | #include <asm/bootinfo.h> | |
| 14 | #include <asm/sgialib.h> | |
| 87353d8a | 15 | #include <asm/smp-ops.h> |
| 1da177e4 LT |
16 | |
| 17 | #undef DEBUG_PROM_INIT | |
| 18 | ||
| 19 | /* Master romvec interface. */ | |
| 20 | struct linux_romvec *romvec; | |
| 21 | int prom_argc; | |
| 22 | LONG *_prom_argv, *_prom_envp; | |
| 23 | ||
| 24 | void __init prom_init(void) | |
| 25 | { | |
| 26 | PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK; | |
| b2e569d8 | 27 | |
| 1da177e4 | 28 | romvec = ROMVECTOR; |
| 36a88530 | 29 | |
| 1da177e4 LT |
30 | prom_argc = fw_arg0; |
| 31 | _prom_argv = (LONG *) fw_arg1; | |
| 32 | _prom_envp = (LONG *) fw_arg2; | |
| 33 | ||
| 34 | if (pb->magic != 0x53435241) { | |
| b2e569d8 RB |
35 | printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n", |
| 36 | (unsigned long) pb->magic); | |
| 1da177e4 LT |
37 | while(1) |
| 38 | ; | |
| 39 | } | |
| 40 | ||
| 41 | prom_init_cmdline(); | |
| 42 | prom_identify_arch(); | |
| 43 | printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n", | |
| 44 | pb->ver, pb->rev); | |
| 45 | prom_meminit(); | |
| 46 | ||
| 47 | #ifdef DEBUG_PROM_INIT | |
| 36a88530 RB |
48 | pr_info("Press a key to reboot\n"); |
| 49 | ArcRead(0, &c, 1, &cnt); | |
| 1da177e4 LT |
50 | ArcEnterInteractiveMode(); |
| 51 | #endif | |
| 87353d8a RB |
52 | #ifdef CONFIG_SGI_IP27 |
| 53 | { | |
| 54 | extern struct plat_smp_ops ip27_smp_ops; | |
| 55 | ||
| 56 | register_smp_ops(&ip27_smp_ops); | |
| 57 | } | |
| 58 | #endif | |
| 1da177e4 | 59 | } |