Began two-stage hdd bootloader and os installer

1 files changed, 26 insertions, 0 deletions

diff --git a/src/kernel/fs/atapi_pio.h b/src/kernel/fs/atapi_pio.h
new file mode 100644
index 0000000..5e89e85
--- /dev/null
+++ b/src/kernel/fs/atapi_pio.h
@@ -0,0 +1,26 @@
+#ifndef MELVIX_ATAPI_PIO_H
+#define MELVIX_ATAPI_PIO_H
+
+#include <stdint.h>
+
+#define ATAPI_PIO_DRIVE 0xE0
+#define LBA_READ_INT 0x13
+#define ATAPI_PIO_DAPACK 0x7E00
+#define ATAPI_PIO_BUFFER 0x8000
+#define ATAPI_SECTOR_SIZE 0x800
+
+struct dapack {
+    uint8_t size;
+    uint8_t null;
+    uint16_t blkcount;
+    uint16_t boffset;
+    uint16_t bsegment;
+    uint32_t start;
+    uint32_t upper_lba_bits;
+} __attribute__((packed));
+
+void ATAPI_read(uint16_t nblocks, uint32_t lba);
+
+void ATAPI_granular_read(uint32_t nblocks, uint32_t lba, uint8_t *output);
+
+#endif