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Added AMAZING boot menu to KBOOT

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Tom-on
2025-01-05 18:20:15 +01:00
parent 707733e449
commit 94ca8c935f
22 changed files with 651 additions and 16 deletions
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boot/stage2/disk.c
+24
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@@ -0,0 +1,24 @@
#include "stdint.h"
#include "port.h"
#include "disk.h"
void readSectors(uint32_t lba, size_t count, void* dst) {
outb(PIO_PORT + 6, ((lba >> 24) & 0x0f) | 0xe0);
outb(PIO_PORT + 2, count);
outb(PIO_PORT + 3, lba & 0xff);
outb(PIO_PORT + 4, (lba >> 8) & 0xff);
outb(PIO_PORT + 5, (lba >> 16) & 0xff);
outb(PIO_PORT + 7, PIO_CMD_READ);
uint16_t* buf = (uint16_t*)dst;
for (size_t i = 0; i < count; i++) {
while (inb(PIO_PORT + 7) & (1 << 7)); // Wait until BSY is cleared
for (size_t j = 0; j < SECTOR_SIZE / 2; j++) *buf++ = inw(PIO_PORT);
for (uint8_t wait = 0; wait < 4; wait++) inb(PIO_ALT_STATUS);
}
}
/* TODO */
void writeSectors(uint32_t lba, size_t count, void* src) {}