1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> 4 */ 5 6 #include <common.h> 7 #include <linux/ctype.h> 8 9 u8 table_compute_checksum(void *v, int len) 10 { 11 u8 *bytes = v; 12 u8 checksum = 0; 13 int i; 14 15 for (i = 0; i < len; i++) 16 checksum -= bytes[i]; 17 18 return checksum; 19 } 20