Ejemplo n.º 1
0
void
reboot(void *entry, void *code, ulong size)
{
	void (*f)(ulong, ulong, ulong);
	ulong *pdb;

	writeconf();

	/*
	 * the boot processor is cpu0.  execute this function on it
	 * so that the new kernel has the same cpu0.  this only matters
	 * because the hardware has a notion of which processor was the
	 * boot processor and we look at it at start up.
	 */
	if (m->machno != 0) {
		procwired(up, 0);
		sched();
	}

	shutdown(0);

	/*
	 * should be the only processor running now
	 */
	if (m->machno != 0)
		print("on cpu%d (not 0)!\n", m->machno);
	if (active.machs)
		print("still have active ap processors!\n");

	print("shutting down...\n");
	delay(200);

	splhi();

	/* turn off buffered serial console */
	serialoq = nil;

	/* shutdown devices */
	chandevshutdown();
	arch->introff();

	/*
	 * Modify the machine page table to directly map the low 4MB of memory
	 * This allows the reboot code to turn off the page mapping
	 */
	pdb = m->pdb;
	pdb[PDX(0)] = pdb[PDX(KZERO)];
	mmuflushtlb(PADDR(pdb));

	/* setup reboot trampoline function */
	f = (void*)REBOOTADDR;
	memmove(f, rebootcode, sizeof(rebootcode));

	print("rebooting...\n");

	/* off we go - never to return */
	coherence();
	(*f)(PADDR(entry), PADDR(code), size);
}
Ejemplo n.º 2
0
Archivo: main.c Proyecto: 8l/inferno
void
exit(int ispanic)
{
	USED(ispanic);

	spllo();
	print("cpu exiting\n");

	/* Shutdown running devices */
	chandevshutdown();

	microdelay(500);
	systemreset();
}
Ejemplo n.º 3
0
/* from ../pc: */
void
reboot(void *entry, void *code, ulong size)
{
	// writeconf();		// pass kernel environment to next kernel
	shutdown(0);

	/*
	 * should be the only processor running now
	 */
	print("shutting down...\n");
	delay(200);

	splhi();

	/* turn off buffered serial console */
	serialoq = nil;

	/* shutdown devices */
	chandevshutdown();

#ifdef FUTURE
{
	ulong *pdb;
	/*
	 * Modify the machine page table to directly map the low 4MB of memory
	 * This allows the reboot code to turn off the page mapping
	 */
	pdb = m->pdb;
	pdb[PDX(0)] = pdb[PDX(KZERO)];
	mmuflushtlb(PADDR(pdb));
}
	/* setup reboot trampoline function */
{
	void (*f)(ulong, ulong, ulong) = (void*)REBOOTADDR;

	memmove(f, rebootcode, sizeof(rebootcode));
#else
	USED(entry, code, size);
#endif

	print("rebooting...\n");
#ifdef FUTURE
	/* off we go - never to return */
	(*f)(PADDR(entry), PADDR(code), size);
}
#endif
	setupboot(0);		// reboot, don't halt
	exit(0);
}
Ejemplo n.º 4
0
/*
 * the new kernel is already loaded at address `code'
 * of size `size' and entry point `entry'.
 */
void
reboot(void *entry, void *code, ulong size)
{
	void (*f)(ulong, ulong, ulong);

	iprint("starting reboot...");
	writeconf();
	
	shutdown(0);

	/*
	 * should be the only processor running now
	 */

	print("shutting down...\n");
	delay(200);

	/* turn off buffered serial console */
	serialoq = nil;

	/* shutdown devices */
	chandevshutdown();

	/* call off the dog */
	clockshutdown();

	splhi();

	/* setup reboot trampoline function */
	f = (void*)REBOOTADDR;
	memmove(f, rebootcode, sizeof(rebootcode));
	cacheuwbinv();
	l2cacheuwb();

	print("rebooting...");
	iprint("entry %#lux code %#lux size %ld\n",
		PADDR(entry), PADDR(code), size);
	delay(100);		/* wait for uart to quiesce */

	/* off we go - never to return */
	cacheuwbinv();
	l2cacheuwb();
	(*f)(PADDR(entry), PADDR(code), size);

	iprint("loaded kernel returned!\n");
	delay(1000);
	archreboot();
}
Ejemplo n.º 5
0
Archivo: main.c Proyecto: 8l/inferno
void
exit(int ispanic)
{
	up = 0;
	spllo();
	print("cpu %d exiting\n", m->machno);

	/* Shutdown running devices */
	chandevshutdown();

	delay(1000);
	splhi();
	if(ispanic)
		for(;;);
	archreboot();
}
Ejemplo n.º 6
0
void
reboot(void *entry, void *code, ulong size)
{
	int i;
	void (*f)(ulong, ulong, ulong);
	ulong *pdb;

	/* we do pass options to the kernel we loaded, however, at CONFADDR. */
	// writeconf();

	/*
	 * the boot processor is cpu0.  execute this function on it
	 * so that the new kernel has the same cpu0.  this only matters
	 * because the hardware has a notion of which processor was the
	 * boot processor and we look at it at start up.
	 */
	if (m->machno != 0) {
		procwired(up, 0);
		sched();
	}

	if(conf.nmach > 1) {
		/*
		 * the other cpus could be holding locks that will never get
		 * released (e.g., in the print path) if we put them into
		 * reset now, so force them to shutdown gracefully first.
		 */
		lock(&active);
		active.rebooting = 1;
		unlock(&active);
		shutdown(0);
		if(arch->resetothers)
			arch->resetothers();
		delay(20);
	}

	/*
	 * should be the only processor running now
	 */
	active.machs = 0;
	if (m->machno != 0)
		print("on cpu%d (not 0)!\n", m->machno);

	print("shutting down...\n");
	delay(200);

	splhi();

	/* turn off buffered serial console */
	serialoq = nil;

	/* shutdown devices */
	chandevshutdown();
	arch->introff();

	/*
	 * Modify the machine page table to directly map low memory
	 * This allows the reboot code to turn off the page mapping
	 */
	pdb = m->pdb;
	for (i = 0; i < LOWPTEPAGES; i++)
		pdb[PDX(i*4*MB)] = pdb[PDX(KZERO + i*4*MB)];
	mmuflushtlb(PADDR(pdb));

	/* setup reboot trampoline function */
	f = (void*)REBOOTADDR;
	memmove(f, rebootcode, sizeof(rebootcode));

	print("rebooting...\n");

	/* off we go - never to return */
	coherence();
	(*f)(PADDR(entry), PADDR(code), size);
}