BarinkOS/kernel/partitiontable/mbr/MasterBootRecord.h

41 lines
1.1 KiB
C

#pragma once
#include <stdint-gcc.h>
#include "PartitionTableEntry.h"
#include "../../memory/KernelHeap.h"
#include "../../storage/ata pio/ataDevice.h"
struct MBR {
uint8_t code [440];
uint32_t uniqueID;
uint16_t Reserved;
PartitionTableEntry TableEntries[4];
uint16_t ValidBootsector;
}__attribute__((packed));
MBR* getPartitions( bool DEBUG = false){
const int C = 0;
const int H = 0;
const int HPC = 16;
const int SPT = 63;
int S =1;
uint32_t LBA = (C*HPC+H) * SPT + (S-1);
MBR* mbr =(MBR*) malloc(sizeof (MBR));
ATAPIO::Read(BUS_PORT::Primary, DEVICE_DRIVE::MASTER, LBA, (uint16_t*)mbr);
if(DEBUG){
printf("BootSector: 0x%x\n", mbr->ValidBootsector );
for( int i = 0 ; i < 4 ; i ++){
PartitionTableEntry PT = mbr->TableEntries[i];
printf("Partition %d [ %d sectors, PartitionType: 0x%x, 0x%x, \nLBA Start: 0x%x ]\n" ,
i, PT.Number_sectors_inPartition, PT.PartitionType, mbr->uniqueID, PT.LBA_partition_start );
}
}
return mbr;
}