1/* 2 * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7#include <common.h> 8#include <linux/ctype.h> 9 10u8 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