ATA/DISK: Share important constants and structures

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include/disks.h

@@ -0,0 +1,39 @@
+/*
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef DISKS_H
+#define DISKS_H
+
+struct block_device;
+
+/** Size of one sector in bytes */
+#define SECTOR_SIZE 512
+
+/** Size of one sector in bit shift */
+#define SECTOR_SHIFT 9
+
+/**
+ * Description of one partition table entry (D*S type)
+ */
+struct partition_entry {
+	uint8_t boot_indicator;	/*! Maybe marked as an active partition */
+	uint8_t chs_begin[3];	/*! Start of the partition in cylinders, heads and sectors */
+	uint8_t type;		/*! Filesystem type */
+	uint8_t chs_end[3];	/*! End of the partition in cylinders, heads and sectors */
+	uint32_t partition_start; /*! Start of the partition in LBA notation */
+	uint32_t partition_size; /*! Start of the partition in LBA notation */
+} __attribute__ ((packed));
+
+#endif /* DISKS_H */