1 files changed, 25 insertions, 0 deletions
diff --git a/lib/avb/fsl/utils.h b/lib/avb/fsl/utils.h
new file mode 100644
index 0000000..6fe72f5
--- /dev/null
+++ b/lib/avb/fsl/utils.h
@@ -0,0 +1,25 @@
+#ifndef __UTILS_H__
+#define __UTILS_H__
+
+#include <common.h>
+
+#define ALIGN_BYTES 64 /*mmc block read/write need 64 bytes aligned */
+
+struct margin_pos {
+	/* which blk the read/write starts */
+	uint64_t blk_start;
+	/* which blk the read/write ends */
+	uint64_t blk_end;
+	/* start position inside the start blk */
+	unsigned long start;
+	/* end position inside the end blk */
+	unsigned long end;
+	/* how many blks can be read/write one time */
+	unsigned long multi;
+};
+typedef struct margin_pos margin_pos_t;
+
+int get_margin_pos(uint64_t part_start, uint64_t part_end, unsigned long blksz,
+				margin_pos_t *margin, int64_t offset, size_t num_bytes, bool allow_partial);
+
+#endif