From 2b445e4d31940d512b3257f7398b794be710b8a9 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Fri, 19 Aug 2016 01:23:22 +0200
Subject: x86: Move table csum into separate header

We need the checksum function without all the other table functionality
soon, so let's split it out into its own header file.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 include/tables_csum.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 include/tables_csum.h

(limited to 'include/tables_csum.h')

diff --git a/include/tables_csum.h b/include/tables_csum.h
new file mode 100644
index 0000000..27d147b
--- /dev/null
+++ b/include/tables_csum.h
@@ -0,0 +1,22 @@
+/*
+ * 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;
+}
+
+#endif
-- 
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