3
* arch/xtensa/platform-iss/setup.c
5
* Platform specific initialization.
7
* Authors: Chris Zankel <chris@zankel.net>
8
* Joe Taylor <joe@tensilica.com>
10
* Copyright 2001 - 2005 Tensilica Inc.
12
* This program is free software; you can redistribute it and/or modify it
13
* under the terms of the GNU General Public License as published by the
14
* Free Software Foundation; either version 2 of the License, or (at your
15
* option) any later version.
18
#include <linux/stddef.h>
19
#include <linux/kernel.h>
20
#include <linux/init.h>
21
#include <linux/errno.h>
22
#include <linux/reboot.h>
23
#include <linux/kdev_t.h>
24
#include <linux/types.h>
25
#include <linux/major.h>
26
#include <linux/blkdev.h>
27
#include <linux/console.h>
28
#include <linux/delay.h>
29
#include <linux/stringify.h>
30
#include <linux/notifier.h>
32
#include <asm/platform.h>
33
#include <asm/bootparam.h>
36
void __init platform_init(bp_tag_t* bootparam)
41
void platform_halt(void)
43
printk (" ** Called platform_halt(), looping forever! **\n");
47
void platform_power_off(void)
49
printk (" ** Called platform_power_off(), looping forever! **\n");
52
void platform_restart(void)
54
/* Flush and reset the mmu, simulate a processor reset, and
55
* jump to the reset vector. */
57
__asm__ __volatile__("movi a2, 15\n\t"
58
"wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
60
"wsr a2, " __stringify(ICOUNT) "\n\t"
61
"wsr a2, " __stringify(IBREAKENABLE) "\n\t"
62
"wsr a2, " __stringify(LCOUNT) "\n\t"
64
"wsr a2, " __stringify(PS) "\n\t"
68
: "a" (XCHAL_RESET_VECTOR_VADDR)
71
/* control never gets here */
74
extern void iss_net_poll(void);
76
const char twirl[]="|/-\\|/-\\";
78
void platform_heartbeat(void)
81
static int i = 0, j = 0;
85
printk("\r%c\r", twirl[j++]);
95
iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
97
__asm__ __volatile__("movi a2, -1; simcall\n");
101
static struct notifier_block iss_panic_block = {
107
void __init platform_setup(char **p_cmdline)
109
atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);