1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2013, Andreas Oetken.
4 */
5
6 #ifndef USE_HOSTCC
7 #include <common.h>
8 #include <fdtdec.h>
9 #include <asm/byteorder.h>
10 #include <linux/errno.h>
11 #include <asm/unaligned.h>
12 #include <hash.h>
13 #else
14 #include "fdt_host.h"
15 #endif
16 #include <u-boot/rsa.h>
17
hash_calculate(const char * name,const struct image_region region[],int region_count,uint8_t * checksum)18 int hash_calculate(const char *name,
19 const struct image_region region[],
20 int region_count, uint8_t *checksum)
21 {
22 struct hash_algo *algo;
23 int ret = 0;
24 void *ctx;
25 uint32_t i;
26 i = 0;
27
28 ret = hash_progressive_lookup_algo(name, &algo);
29 if (ret)
30 return ret;
31
32 ret = algo->hash_init(algo, &ctx);
33 if (ret)
34 return ret;
35
36 for (i = 0; i < region_count - 1; i++) {
37 ret = algo->hash_update(algo, ctx, region[i].data,
38 region[i].size, 0);
39 if (ret)
40 return ret;
41 }
42
43 ret = algo->hash_update(algo, ctx, region[i].data, region[i].size, 1);
44 if (ret)
45 return ret;
46 ret = algo->hash_finish(algo, ctx, checksum, algo->digest_size);
47 if (ret)
48 return ret;
49
50 return 0;
51 }
52