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Linux kernel mirror (for testing)
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1/*
2 *
3 * arch/xtensa/platform-iss/setup.c
4 *
5 * Platform specific initialization.
6 *
7 * Authors: Chris Zankel <chris@zankel.net>
8 * Joe Taylor <joe@tensilica.com>
9 *
10 * Copyright 2001 - 2005 Tensilica Inc.
11 *
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.
16 *
17 */
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/pci.h>
24#include <linux/kdev_t.h>
25#include <linux/types.h>
26#include <linux/major.h>
27#include <linux/blkdev.h>
28#include <linux/console.h>
29#include <linux/delay.h>
30#include <linux/stringify.h>
31#include <linux/notifier.h>
32
33#include <asm/platform.h>
34#include <asm/bootparam.h>
35
36
37void __init platform_init(bp_tag_t* bootparam)
38{
39
40}
41
42void platform_halt(void)
43{
44 printk (" ** Called platform_halt(), looping forever! **\n");
45 while (1);
46}
47
48void platform_power_off(void)
49{
50 printk (" ** Called platform_power_off(), looping forever! **\n");
51 while (1);
52}
53void platform_restart(void)
54{
55 /* Flush and reset the mmu, simulate a processor reset, and
56 * jump to the reset vector. */
57
58 __asm__ __volatile__("movi a2, 15\n\t"
59 "wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
60 "movi a2, 0\n\t"
61 "wsr a2, " __stringify(ICOUNT) "\n\t"
62 "wsr a2, " __stringify(IBREAKENABLE) "\n\t"
63 "wsr a2, " __stringify(LCOUNT) "\n\t"
64 "movi a2, 0x1f\n\t"
65 "wsr a2, " __stringify(PS) "\n\t"
66 "isync\n\t"
67 "jx %0\n\t"
68 :
69 : "a" (XCHAL_RESET_VECTOR_VADDR)
70 : "a2");
71
72 /* control never gets here */
73}
74
75extern void iss_net_poll(void);
76
77const char twirl[]="|/-\\|/-\\";
78
79void platform_heartbeat(void)
80{
81#if 0
82 static int i = 0, j = 0;
83
84 if (--i < 0) {
85 i = 99;
86 printk("\r%c\r", twirl[j++]);
87 if (j == 8)
88 j = 0;
89 }
90#endif
91}
92
93
94
95static int
96iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
97{
98 __asm__ __volatile__("movi a2, -1; simcall\n");
99 return NOTIFY_DONE;
100}
101
102static struct notifier_block iss_panic_block = {
103 iss_panic_event,
104 NULL,
105 0
106};
107
108void __init platform_setup(char **p_cmdline)
109{
110 atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
111}