static void wdt_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
/*
* Read the status register see what is up and
* then printk it.
*/
unsigned char status=inb_p(WDT_SR);
status|=FEATUREMAP1;
status&=~FEATUREMAP2;
printk(KERN_CRIT "WDT status %d\n", status);
if(!(status&WDC_SR_TGOOD))
printk(KERN_CRIT "Overheat alarm.(%d)\n",inb_p(WDT_RT));
if(!(status&WDC_SR_PSUOVER))
printk(KERN_CRIT "PSU over voltage.\n");
if(!(status&WDC_SR_PSUUNDR))
printk(KERN_CRIT "PSU under voltage.\n");
if(!(status&WDC_SR_FANGOOD))
printk(KERN_CRIT "Possible fan fault.\n");
if(!(status&WDC_SR_WCCR))
#ifdef SOFTWARE_REBOOT
#ifdef ONLY_TESTING
printk(KERN_CRIT "Would Reboot.\n");
#else
printk(KERN_CRIT "Initiating system reboot.\n");
hard_reset_now();
#endif
#else
printk(KERN_CRIT "Reset in 5ms.\n");
#endif
}
NORET_TYPE void panic(const char * fmt, ...)
{
static char buf[1024];
va_list args;
int i;
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
printk(KERN_EMERG "Kernel panic: %s\n",buf);
if (current == task[0])
printk(KERN_EMERG "In swapper task - not syncing\n");
else
sys_sync();
do_unblank_screen();
if (panic_timeout > 0)
{
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for(i = 0; i < (panic_timeout*1000); i++)
udelay(1000);
hard_reset_now();
}
for(;;);
}
/*
* This function gets called by ctrl-alt-del - ie the keyboard interrupt.
* As it's called within an interrupt, it may NOT sync: the only choice
* is whether to reboot at once, or just ignore the ctrl-alt-del.
*/
void ctrl_alt_del(void)
{
if (C_A_D)
hard_reset_now();
else
kill_proc(1, SIGINT, 1);
}
/*
* Reboot system call: for obvious reasons only root may call it,
* and even root needs to set up some magic numbers in the registers
* so that some mistake won't make this reboot the whole machine.
* You can also set the meaning of the ctrl-alt-del-key here.
*
* reboot doesn't sync: do that yourself before calling this.
*/
asmlinkage int sys_reboot(int magic, int magic_too, int flag)
{
if (!suser())
return -EPERM;
if (magic != 0xfee1dead || magic_too != 672274793)
return -EINVAL;
if (flag == 0x01234567) {
#ifdef CONFIG_SCSI_GDTH
gdth_halt();
#endif
hard_reset_now();
} else if (flag == 0x89ABCDEF)
C_A_D = 1;
else if (!flag)
C_A_D = 0;
else if (flag == 0xCDEF0123) {
#ifdef CONFIG_SCSI_GDTH
gdth_halt();
#endif
printk(KERN_EMERG "System halted\n");
sys_kill(-1, SIGKILL);
#if defined(CONFIG_APM) && defined(CONFIG_APM_POWER_OFF)
apm_power_off();
#endif
do_exit(0);
} else
return -EINVAL;
return (0);
}
/*
* This function gets called by ctrl-alt-del - ie the keyboard interrupt.
* As it's called within an interrupt, it may NOT sync: the only choice
* is whether to reboot at once, or just ignore the ctrl-alt-del.
*/
void ctrl_alt_del(void)
{
if (C_A_D)
hard_reset_now();
else
send_sig(SIGINT,task[1],1);
}
/*
* This function gets called by ctrl-alt-del - ie the keyboard interrupt.
* As it's called within an interrupt, it may NOT sync: the only choice
* is whether to reboot at once, or just ignore the ctrl-alt-del.
*/
void ctrl_alt_del(void)
{
if (C_A_D) {
#ifdef CONFIG_SCSI_GDTH
gdth_halt();
#endif
hard_reset_now();
} else
kill_proc(1, SIGINT, 1);
}
/*
* Reboot system call: for obvious reasons only root may call it,
* and even root needs to set up some magic numbers in the registers
* so that some mistake won't make this reboot the whole machine.
* You can also set the meaning of the ctrl-alt-del-key here.
*
* reboot doesn't sync: do that yourself before calling this.
*/
asmlinkage int sys_reboot(int magic, int magic_too, int flag)
{
if (!suser())
return -EPERM;
if (magic != 0xfee1dead || magic_too != 672274793)
return -EINVAL;
if (flag == 0x01234567)
hard_reset_now();
else if (flag == 0x89ABCDEF)
C_A_D = 1;
else if (!flag)
C_A_D = 0;
else if (flag == 0xCDEF0123) {
printk(KERN_EMERG "System halted\n");
sys_kill(-1, SIGKILL);
do_exit(0);
} else
return -EINVAL;
return (0);
}
static _INLINE_ void receive_chars(struct NIOS_serial *info, struct pt_regs *regs, unsigned short rx)
{
struct tty_struct *tty = info->tty;
unsigned char ch;
np_uart * uart= (np_uart *)(info->port);
/*
* This do { } while() loop will get ALL chars out of Rx FIFO
*/
do {
ch = uart->np_uartrxdata;
if(info->is_cons) {
#ifdef CONFIG_MAGIC_SYSRQ
if(rx & np_uartstatus_brk_mask) {
batten_down_hatches();
return;
} else if (ch == 0x10) { /* ^P */
show_state();
show_mem();
return;
} else if (ch == 0x12) { /* ^R */
hard_reset_now();
return;
#ifdef DEBUG
} else if (ch == 0x02) { /* ^B */
batten_down_hatches();
return;
} else if (ch == 0x01) { /* ^A */
asm("trap 0"); /* Back to monitor */
return; /* (won't be coming back) */
#endif
}
#endif /* CONFIG_MAGIC_SYSRQ */
}
if(!tty)
goto clear_and_exit;
/*
* Make sure that we do not overflow the buffer
*/
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
queue_task(&tty->flip.tqueue, &tq_timer);
return;
}
if(rx & np_uartstatus_pe_mask) {
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
status_handle(info, rx);
} else if(rx & np_uartstatus_roe_mask) {
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
status_handle(info, rx);
} else if(rx & np_uartstatus_fe_mask) {
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
status_handle(info, rx);
} else if(rx & np_uartstatus_brk_mask) {
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
status_handle(info, rx);
} else {
*tty->flip.flag_buf_ptr++ = 0; /* XXX */
}
*tty->flip.char_buf_ptr++ = ch;
tty->flip.count++;
} while((rx = uart->np_uartstatus) & np_uartstatus_rrdy_mask);
queue_task(&tty->flip.tqueue, &tq_timer);
clear_and_exit:
return;
}
void machine_restart(char *cmd)
{
hard_reset_now();
}
void cmd_reboot() {
monitor_write("System is going down for reboot NOW!\n");
hard_reset_now();
}
void machine_restart(void)
{
hard_reset_now();
}
static _INLINE_ void receive_chars(struct LEON_serial *info, struct pt_regs *regs, unsigned short rx)
{
struct tty_struct *tty = info->tty;
unsigned char ch;
/*
* This do { } while() loop will get ALL chars out of Rx FIFO
*/
do {
ch = leon->uartdata1;
if(info->is_cons) {
if(0 /* LEON does not report break */ & rx) { /* whee, break received */
status_handle(info, rx);
return;
} else if (ch == 0x10) { /* ^P */
show_state();
show_free_areas();
show_buffers();
show_net_buffers();
return;
} else if (ch == 0x12) { /* ^R */
hard_reset_now();
return;
}
/* It is a 'keyboard interrupt' ;-) */
wake_up(&keypress_wait);
}
if(!tty)
goto clear_and_exit;
/*
* Make sure that we do not overflow the buffer
*/
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
queue_task_irq_off(&tty->flip.tqueue, &tq_timer);
return;
}
if(rx & USTAT_PE) {
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
status_handle(info, rx);
} else if(rx & USTAT_OV) {
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
status_handle(info, rx);
} else if(rx & USTAT_FE) {
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
status_handle(info, rx);
} else {
*tty->flip.flag_buf_ptr++ = 0; /* XXX */
}
*tty->flip.char_buf_ptr++ = ch;
tty->flip.count++;
} while((rx = leon->uartstatus1) & USTAT_DR);
queue_task_irq_off(&tty->flip.tqueue, &tq_timer);
clear_and_exit:
return;
}
