Convert CONFIG_SAMSUNG_ONENAND to Kconfig

[platform/kernel/u-boot.git] / include / tables_csum.h

diff --git a/include/tables_csum.h b/include/tables_csum.h
index 27d147b..4812333 100644 (file)
--- a/include/tables_csum.h
+++ b/include/tables_csum.h
@@ -1,22 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef _TABLES_CSUM_H_
 #define _TABLES_CSUM_H_
 
-static inline u8 table_compute_checksum(void *v, int len)
-{
-       u8 *bytes = v;
-       u8 checksum = 0;
-       int i;
-
-       for (i = 0; i < len; i++)
-               checksum -= bytes[i];
-
-       return checksum;
-}
+/**
+ * table_compute_checksum() - Compute a table checksum
+ *
+ * This computes an 8-bit checksum for the configuration table.
+ * All bytes in the configuration table, including checksum itself and
+ * reserved bytes must add up to zero.
+ *
+ * @v:         configuration table base address
+ * @len:       configuration table size
+ * @return:    the 8-bit checksum
+ */
+u8 table_compute_checksum(void *v, int len);
 
 #endif