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Map all free memory pages and add to page stack

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This commit is contained in:
Thomas Lovén
2018-01-04 00:10:27 +01:00
parent cf1b631461
commit 5dc4e27392
3 changed files with 20 additions and 0 deletions
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15
src/kernel/boot/kmain.c
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@@ -22,7 +22,22 @@ void kmain(uint64_t multiboot_magic, void *multiboot_data)
uintptr_t start, end;
uint32_t type, i=0;
while(!multiboot_get_memory_area(i++, &start, &end, &type))
{
if(type != 1)
continue;
debug_printf("Mem %d 0x%x-0x%x\n", type, start, end);
for(uintptr_t p = start; p < end; p += PAGE_SIZE)
{
if(p >= V2P(&kernel_start) && p < V2P(&kernel_end))
continue;
if(!(p & 0x1FFFFF))
{
touch_page(&BootP4, (uintptr_t)P2V(p), PAGE_HUGE);
vmm_set_page(&BootP4, (uintptr_t)P2V(p), p, PAGE_HUGE | PAGE_WRITE | PAGE_PRESENT);
}
pmm_free(p);
}
}
debug_ok("Boot \"Complete\"\n");