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 #include <platform/simcall.h>
  36
  37
  38 void __init platform_init(bp_tag_t* bootparam)
  39 {
  40
  41 }
  42
  43 void platform_halt(void)
  44 {
  45         pr_info(" ** Called platform_halt() **\n");
  46         simc_exit(0);
  47 }
  48
  49 void platform_power_off(void)
  50 {
  51         pr_info(" ** Called platform_power_off() **\n");
  52         simc_exit(0);
  53 }
  54 void platform_restart(void)
  55 {
  56         /* Flush and reset the mmu, simulate a processor reset, and
  57          * jump to the reset vector. */
  58         cpu_reset();
  59         /* control never gets here */
  60 }
  61
  62 extern void iss_net_poll(void);
  63
  64 const char twirl[]="|/-\\|/-\\";
  65
  66 void platform_heartbeat(void)
  67 {
  68 #if 0
  69         static int i = 0, j = 0;
  70
  71         if (--i < 0) {
  72                 i = 99;
  73                 printk("\r%c\r", twirl[j++]);
  74                 if (j == 8)
  75                         j = 0;
  76         }
  77 #endif
  78 }
  79
  80
  81
  82 static int
  83 iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
  84 {
  85         simc_exit(1);
  86         return NOTIFY_DONE;
  87 }
  88
  89 static struct notifier_block iss_panic_block = {
  90         iss_panic_event,
  91         NULL,
  92         0
  93 };
  94
  95 void __init platform_setup(char **p_cmdline)
  96 {
  97         atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
  98 }