Load kernel APIs added (once more, from the correct repo)

Review URL: http://codereview.chromium.org/2165003

common/include/boot_device.h

@@ -0,0 +1,26 @@
+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Helper functions/wrappers for raw sector access to current boot device. */
+
+#ifndef VBOOT_REFERENCE_BOOT_DEVICE_H_
+#define VBOOT_REFERENCE_BOOT_DEVICE_H_
+
+#include <stdint.h>
+
+int BootDeviceReadLBA(uint64_t lba_start, uint64_t lba_count, void *buffer);
+/* Reads lba_count LBA sectors, starting at sector lba_start, from the current
+ * boot device, into the buffer.
+ *
+ * Returns 0 if successful or 1 if error. */
+
+int BootDeviceWriteLBA(uint64_t lba_start, uint64_t lba_count,
+                       const void *buffer);
+/* Writes lba_count LBA sectors, starting at sector lba_start, to the current
+ * boot device, from the buffer.
+ *
+ * Returns 0 if successful or 1 if error. */
+
+#endif  /* VBOOT_REFERENCE_BOOT_DEVICE_H_ */