1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (c) 2022, Arm Limited. All rights reserved. 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu */ 6*91f16700Schasinglulu 7*91f16700Schasinglulu #include <stdint.h> 8*91f16700Schasinglulu 9*91f16700Schasinglulu #include <plat/arm/common/plat_arm.h> 10*91f16700Schasinglulu 11*91f16700Schasinglulu /* 12*91f16700Schasinglulu * Return the non-volatile counter value stored in the platform. The cookie 13*91f16700Schasinglulu * will contain the OID of the counter in the certificate. 14*91f16700Schasinglulu * 15*91f16700Schasinglulu * Return: 0 = success, Otherwise = error 16*91f16700Schasinglulu */ 17*91f16700Schasinglulu int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr) 18*91f16700Schasinglulu { 19*91f16700Schasinglulu *nv_ctr = N1SDP_FW_NVCTR_VAL; 20*91f16700Schasinglulu return 0; 21*91f16700Schasinglulu } 22*91f16700Schasinglulu 23*91f16700Schasinglulu /* 24*91f16700Schasinglulu * Store a new non-volatile counter value. By default on ARM development 25*91f16700Schasinglulu * platforms, the non-volatile counters are RO and cannot be modified. We expect 26*91f16700Schasinglulu * the values in the certificates to always match the RO values so that this 27*91f16700Schasinglulu * function is never called. 28*91f16700Schasinglulu * 29*91f16700Schasinglulu * Return: 0 = success, Otherwise = error 30*91f16700Schasinglulu */ 31*91f16700Schasinglulu int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr) 32*91f16700Schasinglulu { 33*91f16700Schasinglulu return 1; 34*91f16700Schasinglulu } 35*91f16700Schasinglulu 36*91f16700Schasinglulu /* 37*91f16700Schasinglulu * Return the ROTPK hash in the following ASN.1 structure in DER format: 38*91f16700Schasinglulu * 39*91f16700Schasinglulu * AlgorithmIdentifier ::= SEQUENCE { 40*91f16700Schasinglulu * algorithm OBJECT IDENTIFIER, 41*91f16700Schasinglulu * parameters ANY DEFINED BY algorithm OPTIONAL 42*91f16700Schasinglulu * } 43*91f16700Schasinglulu * 44*91f16700Schasinglulu * DigestInfo ::= SEQUENCE { 45*91f16700Schasinglulu * digestAlgorithm AlgorithmIdentifier, 46*91f16700Schasinglulu * digest OCTET STRING 47*91f16700Schasinglulu * } 48*91f16700Schasinglulu */ 49*91f16700Schasinglulu int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len, 50*91f16700Schasinglulu unsigned int *flags) 51*91f16700Schasinglulu { 52*91f16700Schasinglulu return arm_get_rotpk_info(cookie, key_ptr, key_len, flags); 53*91f16700Schasinglulu } 54*91f16700Schasinglulu 55