Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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. */
19struct linux_romvec *romvec;
20int prom_argc;
21LONG *_prom_argv, *_prom_envp;
22
23void __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}