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);
}
void
exit(int ispanic)
{
USED(ispanic);
spllo();
print("cpu exiting\n");
/* Shutdown running devices */
chandevshutdown();
microdelay(500);
systemreset();
}
/* 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);
}
/*
* 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();
}
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();
}
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);
}