blob: 12ed62f2d451cfca516c7e1b5aa1870df9cf459e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
#include <disc.h>
#include <multiboot2.h>
#include <libk/string.h>
#include <paging.h>
#include <libk/math.h>
#include <kernel_vma.h>
disc_sector_t* disc;
void disc_init()
{
disc = (disc_sector_t*)((uint64_t)ext2_module->mod_start + KERNEL_VMA);
if (disc == NULL) {
printf("Error opening disc\n");
}
uint32_t disc_size = ext2_module->mod_end - ext2_module->mod_start;
for (size_t i = 0; i < upper_div(disc_size, PAGE_SIZE) + 1; i++) {
map_addr((uint64_t)((char*)disc + i * PAGE_SIZE), (uint64_t)((char*)disc + i * PAGE_SIZE), FLAG_PRESENT | FLAG_WRITABLE | FLAG_HUGE);
}
}
void read_sector(size_t sector_num, disc_sector_t* disc_sector)
{
memcpy(disc_sector, disc + sector_num, SECTOR_SIZE);
}
void write_sector(size_t sector_num, disc_sector_t* disc_sector)
{
memcpy(disc + sector_num, disc_sector, SECTOR_SIZE);
}
|
