1 /*
2 * Copyright (c) 2022, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <stdint.h>
8
9 #include <plat/arm/common/plat_arm.h>
10
11 /*
12 * Return the non-volatile counter value stored in the platform. The cookie
13 * will contain the OID of the counter in the certificate.
14 *
15 * Return: 0 = success, Otherwise = error
16 */
plat_get_nv_ctr(void * cookie,unsigned int * nv_ctr)17 int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr)
18 {
19 *nv_ctr = N1SDP_FW_NVCTR_VAL;
20 return 0;
21 }
22
23 /*
24 * Store a new non-volatile counter value. By default on ARM development
25 * platforms, the non-volatile counters are RO and cannot be modified. We expect
26 * the values in the certificates to always match the RO values so that this
27 * function is never called.
28 *
29 * Return: 0 = success, Otherwise = error
30 */
plat_set_nv_ctr(void * cookie,unsigned int nv_ctr)31 int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr)
32 {
33 return 1;
34 }
35
36 /*
37 * Return the ROTPK hash in the following ASN.1 structure in DER format:
38 *
39 * AlgorithmIdentifier ::= SEQUENCE {
40 * algorithm OBJECT IDENTIFIER,
41 * parameters ANY DEFINED BY algorithm OPTIONAL
42 * }
43 *
44 * DigestInfo ::= SEQUENCE {
45 * digestAlgorithm AlgorithmIdentifier,
46 * digest OCTET STRING
47 * }
48 */
plat_get_rotpk_info(void * cookie,void ** key_ptr,unsigned int * key_len,unsigned int * flags)49 int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len,
50 unsigned int *flags)
51 {
52 return arm_get_rotpk_info(cookie, key_ptr, key_len, flags);
53 }
54
55