projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 7282bee7 CZ |
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 | { | |
| 23753171 MF |
43 | pr_info(" ** Called platform_halt() **\n"); |
| 44 | __asm__ __volatile__("movi a2, 1\nsimcall\n"); | |
| 7282bee7 CZ |
45 | } |
| 46 | ||
| 47 | void platform_power_off(void) | |
| 48 | { | |
| 23753171 MF |
49 | pr_info(" ** Called platform_power_off() **\n"); |
| 50 | __asm__ __volatile__("movi a2, 1\nsimcall\n"); | |
| 7282bee7 CZ |
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" | |
| bc5378fc | 58 | "wsr a2, icountlevel\n\t" |
| 7282bee7 | 59 | "movi a2, 0\n\t" |
| bc5378fc | 60 | "wsr a2, icount\n\t" |
| d83ff0bb | 61 | #if XCHAL_NUM_IBREAK > 0 |
| bc5378fc | 62 | "wsr a2, ibreakenable\n\t" |
| d83ff0bb | 63 | #endif |
| 5029615e | 64 | #if XCHAL_HAVE_LOOPS |
| bc5378fc | 65 | "wsr a2, lcount\n\t" |
| 5029615e | 66 | #endif |
| 7282bee7 | 67 | "movi a2, 0x1f\n\t" |
| bc5378fc | 68 | "wsr a2, ps\n\t" |
| 7282bee7 CZ |
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 | { | |
| e041c683 | 113 | atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block); |
| 7282bee7 | 114 | } |