1*1befb38bSAlexander Graf /* 2*1befb38bSAlexander Graf * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> 3*1befb38bSAlexander Graf * 4*1befb38bSAlexander Graf * SPDX-License-Identifier: GPL-2.0+ 5*1befb38bSAlexander Graf */ 6*1befb38bSAlexander Graf 7*1befb38bSAlexander Graf #include <common.h> 8*1befb38bSAlexander Graf #include <linux/ctype.h> 9*1befb38bSAlexander Graf 10*1befb38bSAlexander Graf u8 table_compute_checksum(void *v, int len) 11*1befb38bSAlexander Graf { 12*1befb38bSAlexander Graf u8 *bytes = v; 13*1befb38bSAlexander Graf u8 checksum = 0; 14*1befb38bSAlexander Graf int i; 15*1befb38bSAlexander Graf 16*1befb38bSAlexander Graf for (i = 0; i < len; i++) 17*1befb38bSAlexander Graf checksum -= bytes[i]; 18*1befb38bSAlexander Graf 19*1befb38bSAlexander Graf return checksum; 20*1befb38bSAlexander Graf } 21