1 /*
2 * Copyright (c) 2021, 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 = MORELLO_FW_NVCTR_VAL;
20
21 return 0;
22 }
23
24 /*
25 * Store a new non-volatile counter value. By default on ARM development
26 * platforms, the non-volatile counters are RO and cannot be modified. We expect
27 * the values in the certificates to always match the RO values so that this
28 * function is never called.
29 *
30 * Return: 0 = success, Otherwise = error
31 */
plat_set_nv_ctr(void * cookie,unsigned int nv_ctr)32 int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr)
33 {
34 return 1;
35 }
36
37 /*
38 * Return the ROTPK hash in the following ASN.1 structure in DER format:
39 *
40 * AlgorithmIdentifier ::= SEQUENCE {
41 * algorithm OBJECT IDENTIFIER,
42 * parameters ANY DEFINED BY algorithm OPTIONAL
43 * }
44 *
45 * DigestInfo ::= SEQUENCE {
46 * digestAlgorithm AlgorithmIdentifier,
47 * digest OCTET STRING
48 * }
49 */
plat_get_rotpk_info(void * cookie,void ** key_ptr,unsigned int * key_len,unsigned int * flags)50 int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len,
51 unsigned int *flags)
52 {
53 return arm_get_rotpk_info(cookie, key_ptr, key_len, flags);
54 }
55