xref: /rk3399_rockchip-uboot/include/tables_csum.h (revision 1befb38b868248dda4e84a57aa779f7e8c0b85c0) 
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 
table_compute_checksum(void * v,int len)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
23