Merge tag 'staging-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[sfrench/cifs-2.6.git] / arch / xtensa / platforms / iss / setup.c
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/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>
31
32 #include <asm/platform.h>
33 #include <asm/bootparam.h>
34
35
36 void __init platform_init(bp_tag_t* bootparam)
37 {
38
39 }
40
41 void platform_halt(void)
42 {
43         pr_info(" ** Called platform_halt() **\n");
44         __asm__ __volatile__("movi a2, 1\nsimcall\n");
45 }
46
47 void platform_power_off(void)
48 {
49         pr_info(" ** Called platform_power_off() **\n");
50         __asm__ __volatile__("movi a2, 1\nsimcall\n");
51 }
52 void platform_restart(void)
53 {
54         /* Flush and reset the mmu, simulate a processor reset, and
55          * jump to the reset vector. */
56
57         __asm__ __volatile__("movi      a2, 15\n\t"
58                              "wsr       a2, icountlevel\n\t"
59                              "movi      a2, 0\n\t"
60                              "wsr       a2, icount\n\t"
61 #if XCHAL_NUM_IBREAK > 0
62                              "wsr       a2, ibreakenable\n\t"
63 #endif
64 #if XCHAL_HAVE_LOOPS
65                              "wsr       a2, lcount\n\t"
66 #endif
67                              "movi      a2, 0x1f\n\t"
68                              "wsr       a2, ps\n\t"
69                              "isync\n\t"
70                              "jx        %0\n\t"
71                              :
72                              : "a" (XCHAL_RESET_VECTOR_VADDR)
73                              : "a2");
74
75         /* control never gets here */
76 }
77
78 extern void iss_net_poll(void);
79
80 const char twirl[]="|/-\\|/-\\";
81
82 void platform_heartbeat(void)
83 {
84 #if 0
85         static int i = 0, j = 0;
86
87         if (--i < 0) {
88                 i = 99;
89                 printk("\r%c\r", twirl[j++]);
90                 if (j == 8)
91                         j = 0;
92         }
93 #endif
94 }
95
96
97
98 static int
99 iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
100 {
101         __asm__ __volatile__("movi a2, -1; simcall\n");
102         return NOTIFY_DONE;
103 }
104
105 static struct notifier_block iss_panic_block = {
106         iss_panic_event,
107         NULL,
108         0
109 };
110
111 void __init platform_setup(char **p_cmdline)
112 {
113         atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
114 }