From 0ba991750314310a5e53b0d8135aef5b1352b261 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Wed, 20 Nov 2019 22:17:48 +0100
Subject: Began two-stage hdd bootloader and os installer

---
 src/kernel/fs/atapi_pio.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 src/kernel/fs/atapi_pio.h

(limited to 'src/kernel/fs/atapi_pio.h')

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
-- 
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