1 /* 2 * Copyright (c) 2024, NVIDIA Corporation. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef RMM_EL3_TOKEN_SIGN_H 8 #define RMM_EL3_TOKEN_SIGN_H 9 10 #include <stdint.h> 11 #include <lib/cassert.h> 12 #include <services/rmmd_svc.h> 13 14 /* 15 * Defines member of structure and reserves space 16 * for the next member with specified offset. 17 */ 18 /* cppcheck-suppress [misra-c2012-20.7] */ 19 #define SET_MEMBER(member, start, end) \ 20 union { \ 21 member; \ 22 unsigned char reserved##end[((end) - (start))]; \ 23 } 24 25 #define EL3_TOKEN_RESPONSE_MAX_SIG_LEN U(512) 26 27 struct el3_token_sign_request { 28 SET_MEMBER(uint32_t sig_alg_id, 0x0, 0x8); 29 SET_MEMBER(uint64_t rec_granule, 0x8, 0x10); 30 SET_MEMBER(uint64_t req_ticket, 0x10, 0x18); 31 SET_MEMBER(uint32_t hash_alg_id, 0x18, 0x20); 32 SET_MEMBER(uint8_t hash_buf[SHA512_DIGEST_SIZE], 0x20, 0x60); 33 }; 34 35 CASSERT(__builtin_offsetof(struct el3_token_sign_request, sig_alg_id) == 0x0U, 36 assert_el3_token_sign_request_sig_alg_mismatch); 37 CASSERT(__builtin_offsetof(struct el3_token_sign_request, rec_granule) == 0x8U, 38 assert_el3_token_sign_request_rec_granule_mismatch); 39 CASSERT(__builtin_offsetof(struct el3_token_sign_request, req_ticket) == 0x10U, 40 assert_el3_token_sign_request_req_ticket_mismatch); 41 CASSERT(__builtin_offsetof(struct el3_token_sign_request, hash_alg_id) == 0x18U, 42 assert_el3_token_sign_request_hash_alg_id_mismatch); 43 CASSERT(__builtin_offsetof(struct el3_token_sign_request, hash_buf) == 0x20U, 44 assert_el3_token_sign_request_hash_buf_mismatch); 45 46 47 struct el3_token_sign_response { 48 SET_MEMBER(uint64_t rec_granule, 0x0, 0x8); 49 SET_MEMBER(uint64_t req_ticket, 0x8, 0x10); 50 SET_MEMBER(uint16_t sig_len, 0x10, 0x12); 51 SET_MEMBER(uint8_t signature_buf[EL3_TOKEN_RESPONSE_MAX_SIG_LEN], 0x12, 0x212); 52 }; 53 54 CASSERT(__builtin_offsetof(struct el3_token_sign_response, rec_granule) == 0x0U, 55 assert_el3_token_sign_resp_rec_granule_mismatch); 56 CASSERT(__builtin_offsetof(struct el3_token_sign_response, req_ticket) == 0x8U, 57 assert_el3_token_sign_resp_req_ticket_mismatch); 58 CASSERT(__builtin_offsetof(struct el3_token_sign_response, sig_len) == 0x10U, 59 assert_el3_token_sign_resp_sig_len_mismatch); 60 CASSERT(__builtin_offsetof(struct el3_token_sign_response, signature_buf) == 0x12U, 61 assert_el3_token_sign_resp_sig_buf_mismatch); 62 63 #endif /* RMM_EL3_TOKEN_SIGN_H */ 64