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