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>

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>
Alexander Graf · Bin Meng
1 parent d5a815327d
Showing 3 changed files with 24 additions and 12 deletions Side-by-side Diff
arch/x86/include/asm/tables.h
arch/x86/lib/tables.c
include/tables_csum.h
@@ -7,6 +7,8 @@
 #ifndef _X86_TABLES_H_
 #define _X86_TABLES_H_
  
+#include <tables_csum.h>
+
 /*
  * All x86 tables happen to like the address range from 0xf0000 to 0x100000.
  * We use 0xf0000 as the starting address to store those tables, including
@@ -38,18 +38,6 @@
 #endif
 };
  
-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;
-}
-
 void table_fill_string(char *dest, const char *src, size_t n, char pad)
 {
 	int start, len;
+/*
+ * 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
...	...	@@ -7,6 +7,8 @@
7	7	#ifndef _X86_TABLES_H_
8	8	#define _X86_TABLES_H_
9	9
	10	+#include <tables_csum.h>
	11	+
10	12	/*
11	13	* All x86 tables happen to like the address range from 0xf0000 to 0x100000.
12	14	* We use 0xf0000 as the starting address to store those tables, including
...	...	@@ -38,18 +38,6 @@
38	38	#endif
39	39	};
40	40
41		-u8 table_compute_checksum(void *v, int len)
42		-{
43		- u8 *bytes = v;
44		- u8 checksum = 0;
45		- int i;
46		-
47		- for (i = 0; i < len; i++)
48		- checksum -= bytes[i];
49		-
50		- return checksum;
51		-}
52		-
53	41	void table_fill_string(char dest, const char src, size_t n, char pad)
54	42	{
55	43	int start, len;
	1	+/*
	2	+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
	3	+ *
	4	+ * SPDX-License-Identifier: GPL-2.0+
	5	+ */
	6	+
	7	+#ifndef _TABLES_CSUM_H_
	8	+#define _TABLES_CSUM_H_
	9	+
	10	+static inline u8 table_compute_checksum(void *v, int len)
	11	+{
	12	+ u8 *bytes = v;
	13	+ u8 checksum = 0;
	14	+ int i;
	15	+
	16	+ for (i = 0; i < len; i++)
	17	+ checksum -= bytes[i];
	18	+
	19	+ return checksum;
	20	+}
	21	+
	22	+#endif