void systime_init() {
extp_iterate(EXTP_SYSTIME, systime_extp_init);
if(the_timesource == NULL || the_timesource->systime_us_func == NULL)
fatal("no system time source found!\n");
if(the_timesource->systime_init_func)
the_timesource->systime_init_func();
}
void pmem_init() {
bmap_init(&first_bmap, first_storage, (sizeof(first_storage) * 8));
first_region.bmap = &first_bmap;
first_region.start = 0;
first_region.length = ((first_bmap.bits - (1 /* savety zone */)) * PMEM_PAGESIZE);
first_region.next = NULL;
pmem_region_head = &first_region;
pmem_region_tail = pmem_region_head;
spl_init(&pmem_lock);
/* reserve the page at address zero, as most people don't
* know how to handle it. rm_init() needs to spare this
* page when reserving real mode memory! */
pmem_reserve(0, PMEM_PAGESIZE);
/* from 4K to 0xa0000 (start of kernel memory) for
* real mode */
pmem_reserve(PMEM_PAGESIZE, PMEM_PAGESIZE * 158);
/* reserve the kernel's physical memory, so nobody
* else tries to use it */
if(!pmem_reserve(0xA0000, (((size_t)&_core_lma_end) - 0xA0000))) {
error("failed to protect physical lower and kernel memory\n");
}
/* here we are sufficiently initialized, so virtual memory
* can allocate physical memory for the initial mappings,
* required to get the kernel heap working. this in turn
* enables us, to allocate more memory to add additional
* regions to the physical memory. */
kheap_init();
extp_iterate(EXTP_PMEM_REGION, pmem_iterate_extp);
/* some debugging information */
pmem_region_t* current = pmem_region_head;
while(current) {
trace("pmem: %p - %p (%dKB)\n", current->start,
current->start + current->length, current->length / 1024);
current = current->next;
}
}
void vfs_init() {
extp_iterate(EXTP_VFS_INIT, vfs_init_extp);
}
