void
vm_bootstrap(void)
{
/*
initialize locks
these locks are supposed to be resident in RAM for ever
*/
coremap_lock = lock_create("coremap");
page_lock = lock_create("page");
swap_lock = lock_create("swap");
/*
check
*/
assert(coremap_lock != NULL);
assert(page_lock != NULL);
assert(swap_lock != NULL);
// initialize coremap
coremap_bootstrap();
vmstats_init();
// coremap done
// take charge of memory management
coremap_ready = 1;
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("Put-your-group-name-here's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
/* Early initialization. */
ram_bootstrap();
coremap_bootstrap();
proc_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
kheap_nextgeneration();
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
kheap_nextgeneration();
/* Late phase of initialization. */
vm_bootstrap();
kprintf_bootstrap();
thread_start_cpus();
test161_bootstrap();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
kheap_nextgeneration();
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}