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7282bee7 CZ |
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 | */ | |
7282bee7 CZ |
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 | ||
37 | void __init platform_init(bp_tag_t* bootparam) | |
38 | { | |
39 | ||
40 | } | |
41 | ||
42 | void platform_halt(void) | |
43 | { | |
44 | printk (" ** Called platform_halt(), looping forever! **\n"); | |
45 | while (1); | |
46 | } | |
47 | ||
48 | void platform_power_off(void) | |
49 | { | |
50 | printk (" ** Called platform_power_off(), looping forever! **\n"); | |
51 | while (1); | |
52 | } | |
53 | void 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 | ||
75 | extern void iss_net_poll(void); | |
76 | ||
77 | const char twirl[]="|/-\\|/-\\"; | |
78 | ||
79 | void 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 | ||
95 | static int | |
96 | iss_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 | ||
102 | static struct notifier_block iss_panic_block = { | |
103 | iss_panic_event, | |
104 | NULL, | |
105 | 0 | |
106 | }; | |
107 | ||
108 | void __init platform_setup(char **p_cmdline) | |
109 | { | |
e041c683 | 110 | atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block); |
7282bee7 | 111 | } |