1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* PROM library initialisation code.
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <asm/bootinfo.h>
#include <asm/sgialib.h>
#include <asm/smp-ops.h>
#undef DEBUG_PROM_INIT
/* Master romvec interface. */
struct linux_romvec *romvec;
#if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
/* stack for calling 32bit ARC prom */
u64 o32_stk[4096];
#endif
void __init prom_init(void)
{
PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
romvec = ROMVECTOR;
if (pb->magic != 0x53435241) {
printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
(unsigned long) pb->magic);
while(1)
;
}
prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
prom_identify_arch();
printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
pb->ver, pb->rev);
prom_meminit();
#ifdef DEBUG_PROM_INIT
pr_info("Press a key to reboot\n");
ArcRead(0, &c, 1, &cnt);
ArcEnterInteractiveMode();
#endif
}
|
