111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
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/*
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*
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* arch/xtensa/platform-iss/setup.c
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*
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* Platform specific initialization.
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*
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* Authors: Chris Zankel <chris@zankel.net>
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* Joe Taylor <joe@tensilica.com>
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*
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* Copyright 2001 - 2005 Tensilica Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/reboot.h>
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#include <linux/kdev_t.h>
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#include <linux/types.h>
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#include <linux/major.h>
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#include <linux/blkdev.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/stringify.h>
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#include <linux/notifier.h>
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#include <asm/platform.h>
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#include <asm/bootparam.h>
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void __init platform_init(bp_tag_t* bootparam)
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{
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}
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void platform_halt(void)
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{
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printk (" ** Called platform_halt(), looping forever! **\n");
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while (1);
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}
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void platform_power_off(void)
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{
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printk (" ** Called platform_power_off(), looping forever! **\n");
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while (1);
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}
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void platform_restart(void)
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{
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/* Flush and reset the mmu, simulate a processor reset, and
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* jump to the reset vector. */
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__asm__ __volatile__("movi a2, 15\n\t"
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"wsr a2, " __stringify(ICOUNTLEVEL) "\n\t"
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"movi a2, 0\n\t"
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"wsr a2, " __stringify(ICOUNT) "\n\t"
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"wsr a2, " __stringify(IBREAKENABLE) "\n\t"
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"wsr a2, " __stringify(LCOUNT) "\n\t"
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"movi a2, 0x1f\n\t"
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"wsr a2, " __stringify(PS) "\n\t"
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"isync\n\t"
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"jx %0\n\t"
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:
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: "a" (XCHAL_RESET_VECTOR_VADDR)
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: "a2");
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/* control never gets here */
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}
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extern void iss_net_poll(void);
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const char twirl[]="|/-\\|/-\\";
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void platform_heartbeat(void)
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{
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#if 0
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static int i = 0, j = 0;
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if (--i < 0) {
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i = 99;
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printk("\r%c\r", twirl[j++]);
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if (j == 8)
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j = 0;
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}
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#endif
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}
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static int
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iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
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{
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__asm__ __volatile__("movi a2, -1; simcall\n");
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return NOTIFY_DONE;
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}
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static struct notifier_block iss_panic_block = {
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iss_panic_event,
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NULL,
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0
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};
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void __init platform_setup(char **p_cmdline)
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{
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atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
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}
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