void machine_restart(char *cmd)
{
char *p;
p = strchr(reboot_command, '\n');
if (p)
*p = 0;
if (cmd)
prom_reboot(cmd);
if (*reboot_command)
prom_reboot(reboot_command);
prom_reboot("");
panic("Reboot failed!");
}
void machine_restart(char * cmd)
{
char *p;
sti();
mdelay(8);
cli();
p = strchr (reboot_command, '\n');
if (p) *p = 0;
#ifdef CONFIG_SUN_CONSOLE
if (!serial_console && prom_palette)
prom_palette (1);
#endif
if (cmd)
prom_reboot(cmd);
if (*reboot_command)
prom_reboot(reboot_command);
prom_feval ("reset");
panic("Reboot failed!");
}
static void debounce(unsigned long data)
{
del_timer(&debounce_timer);
if (ioc_icontrol->istat1 & 2) { /* Interrupt still being sent. */
debounce_timer.expires = jiffies + 5; /* 0.05s */
add_timer(&debounce_timer);
hpc3mregs->panel = 0xf3;
return;
}
if (has_paniced)
prom_reboot();
enable_irq(SGI_PANEL_IRQ);
}
/*ARGSUSED*/
void
mdboot(int cmd, int fcn, char *mdep, boolean_t invoke_cb)
{
processorid_t bootcpuid = 0;
static int is_first_quiesce = 1;
static int is_first_reset = 1;
int reset_status = 0;
static char fallback_str[] = "Falling back to regular reboot.\n";
if (fcn == AD_FASTREBOOT && !newkernel.fi_valid)
fcn = AD_BOOT;
if (!panicstr) {
kpreempt_disable();
if (fcn == AD_FASTREBOOT) {
mutex_enter(&cpu_lock);
if (CPU_ACTIVE(cpu_get(bootcpuid))) {
affinity_set(bootcpuid);
}
mutex_exit(&cpu_lock);
} else {
affinity_set(CPU_CURRENT);
}
}
if (force_shutdown_method != AD_UNKNOWN)
fcn = force_shutdown_method;
/*
* XXX - rconsvp is set to NULL to ensure that output messages
* are sent to the underlying "hardware" device using the
* monitor's printf routine since we are in the process of
* either rebooting or halting the machine.
*/
rconsvp = NULL;
/*
* Print the reboot message now, before pausing other cpus.
* There is a race condition in the printing support that
* can deadlock multiprocessor machines.
*/
if (!(fcn == AD_HALT || fcn == AD_POWEROFF))
prom_printf("rebooting...\n");
if (IN_XPV_PANIC())
reset();
/*
* We can't bring up the console from above lock level, so do it now
*/
pm_cfb_check_and_powerup();
/* make sure there are no more changes to the device tree */
devtree_freeze();
if (invoke_cb)
(void) callb_execute_class(CB_CL_MDBOOT, NULL);
/*
* Clear any unresolved UEs from memory.
*/
page_retire_mdboot();
#if defined(__xpv)
/*
* XXPV Should probably think some more about how we deal
* with panicing before it's really safe to panic.
* On hypervisors, we reboot very quickly.. Perhaps panic
* should only attempt to recover by rebooting if,
* say, we were able to mount the root filesystem,
* or if we successfully launched init(1m).
*/
if (panicstr && proc_init == NULL)
(void) HYPERVISOR_shutdown(SHUTDOWN_poweroff);
#endif
/*
* stop other cpus and raise our priority. since there is only
* one active cpu after this, and our priority will be too high
* for us to be preempted, we're essentially single threaded
* from here on out.
*/
(void) spl6();
if (!panicstr) {
mutex_enter(&cpu_lock);
pause_cpus(NULL, NULL);
mutex_exit(&cpu_lock);
}
/*
* If the system is panicking, the preloaded kernel is valid, and
* fastreboot_onpanic has been set, and the system has been up for
* longer than fastreboot_onpanic_uptime (default to 10 minutes),
* choose Fast Reboot.
*/
if (fcn == AD_BOOT && panicstr && newkernel.fi_valid &&
fastreboot_onpanic &&
(panic_lbolt - lbolt_at_boot) > fastreboot_onpanic_uptime) {
fcn = AD_FASTREBOOT;
}
/*
* Try to quiesce devices.
*/
if (is_first_quiesce) {
/*
* Clear is_first_quiesce before calling quiesce_devices()
* so that if quiesce_devices() causes panics, it will not
* be invoked again.
*/
is_first_quiesce = 0;
quiesce_active = 1;
quiesce_devices(ddi_root_node(), &reset_status);
if (reset_status == -1) {
if (fcn == AD_FASTREBOOT && !force_fastreboot) {
prom_printf("Driver(s) not capable of fast "
"reboot.\n");
prom_printf(fallback_str);
fastreboot_capable = 0;
fcn = AD_BOOT;
} else if (fcn != AD_FASTREBOOT)
fastreboot_capable = 0;
}
quiesce_active = 0;
}
/*
* Try to reset devices. reset_leaves() should only be called
* a) when there are no other threads that could be accessing devices,
* and
* b) on a system that's not capable of fast reboot (fastreboot_capable
* being 0), or on a system where quiesce_devices() failed to
* complete (quiesce_active being 1).
*/
if (is_first_reset && (!fastreboot_capable || quiesce_active)) {
/*
* Clear is_first_reset before calling reset_devices()
* so that if reset_devices() causes panics, it will not
* be invoked again.
*/
is_first_reset = 0;
reset_leaves();
}
/* Verify newkernel checksum */
if (fastreboot_capable && fcn == AD_FASTREBOOT &&
fastboot_cksum_verify(&newkernel) != 0) {
fastreboot_capable = 0;
prom_printf("Fast reboot: checksum failed for the new "
"kernel.\n");
prom_printf(fallback_str);
}
(void) spl8();
if (fastreboot_capable && fcn == AD_FASTREBOOT) {
/*
* psm_shutdown is called within fast_reboot()
*/
fast_reboot();
} else {
(*psm_shutdownf)(cmd, fcn);
if (fcn == AD_HALT || fcn == AD_POWEROFF)
halt((char *)NULL);
else
prom_reboot("");
}
/*NOTREACHED*/
}
/* XXX How to pass the reboot command to the firmware??? */
static void sgi_machine_restart(char *command)
{
if (shuting_down)
sgi_machine_power_off();
prom_reboot();
}
