984fa1d4c6
WARNING: THIS BREAKS PARTITIONS Until I get partition maps and can produce device entries like /dev/hda1, partitions will be broken, so DON'T TRY TO BUILD AN IMAGE WITH THE IMAGE BUILDER. Hopefully this is all rectified in under 24 hours...
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
#include <system.h>
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#include <logging.h>
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#include <ata.h>
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#define SECTORSIZE 512
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#define DISK_PORT 0x1F0
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mbr_t mbr;
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int read_partition_map(fs_node_t * device) {
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read_fs(device, 0, SECTORSIZE, (uint8_t *)&mbr);
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if (mbr.signature[0] == 0x55 && mbr.signature[1] == 0xAA) {
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debug_print(INFO, "Partition table found.");
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for (int i = 0; i < 4; ++i) {
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if (mbr.partitions[i].status & 0x80) {
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debug_print(NOTICE, "Partition #%d: @%d+%d", i+1, mbr.partitions[i].lba_first_sector, mbr.partitions[i].sector_count);
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} else {
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debug_print(NOTICE, "Partition #%d: inactive", i+1);
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}
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}
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return 0;
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} else {
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debug_print(ERROR, "Did not find partition table.");
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debug_print(ERROR, "Signature was 0x%x 0x%x instead of 0x55 0xAA", mbr.signature[0], mbr.signature[1]);
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debug_print(ERROR, "Parsing anyone yields:");
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for (int i = 0; i < 4; ++i) {
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if (mbr.partitions[i].status & 0x80) {
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debug_print(NOTICE, "Partition #%d: @%d+%d", i+1, mbr.partitions[i].lba_first_sector, mbr.partitions[i].sector_count);
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} else {
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debug_print(NOTICE, "Partition #%d: inactive", i+1);
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}
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}
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}
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return 1;
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}
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