]> Git Repo - J-u-boot.git/blob - lib/tables_csum.c
efi_loader: add signature database parser
[J-u-boot.git] / lib / tables_csum.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2015, Bin Meng <[email protected]>
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 }
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