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
6 * PROM library initialisation code.
10 #include <linux/init.h>
11 #include <linux/kernel.h>
13 #include <asm/bootinfo.h>
14 #include <asm/sgialib.h>
15 #include <asm/smp-ops.h>
17 #undef DEBUG_PROM_INIT
19 /* Master romvec interface. */
20 struct linux_romvec *romvec;
22 LONG *_prom_argv, *_prom_envp;
24 void __init prom_init(void)
26 PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
31 _prom_argv = (LONG *) fw_arg1;
32 _prom_envp = (LONG *) fw_arg2;
34 if (pb->magic != 0x53435241) {
35 printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
36 (unsigned long) pb->magic);
43 printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
47 #ifdef DEBUG_PROM_INIT
48 pr_info("Press a key to reboot\n");
49 ArcRead(0, &c, 1, &cnt);
50 ArcEnterInteractiveMode();
52 #ifdef CONFIG_SGI_IP27
54 extern struct plat_smp_ops ip27_smp_ops;
56 register_smp_ops(&ip27_smp_ops);