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1147a470c2
Add the AP/RSS interface for reading the entropy. And update the document for the API. Change-Id: I61492d6b5d824a01ffeadc92f9d41ca841ba3367 Signed-off-by: Leo Yan <leo.yan@arm.com> Signed-off-by: Icen Zeyada <Icen.Zeyada2@arm.com>
96 lines
2 KiB
C
96 lines
2 KiB
C
/*
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* Copyright (c) 2023, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#include <psa/client.h>
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#include <psa_manifest/sid.h>
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#if CRYPTO_SUPPORT
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#include <rse_crypto_defs.h>
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#endif
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#include <rse_platform_api.h>
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psa_status_t
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rse_platform_nv_counter_increment(uint32_t counter_id)
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{
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struct psa_invec in_vec[1];
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in_vec[0].base = &counter_id;
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in_vec[0].len = sizeof(counter_id);
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return psa_call(RSE_PLATFORM_SERVICE_HANDLE,
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RSE_PLATFORM_API_ID_NV_INCREMENT,
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in_vec, 1, NULL, 0);
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}
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psa_status_t
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rse_platform_nv_counter_read(uint32_t counter_id,
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uint32_t size, uint8_t *val)
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{
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struct psa_invec in_vec[1];
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struct psa_outvec out_vec[1];
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in_vec[0].base = &counter_id;
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in_vec[0].len = sizeof(counter_id);
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out_vec[0].base = val;
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out_vec[0].len = size;
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return psa_call(RSE_PLATFORM_SERVICE_HANDLE,
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RSE_PLATFORM_API_ID_NV_READ,
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in_vec, 1, out_vec, 1);
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}
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#if CRYPTO_SUPPORT
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psa_status_t
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rse_platform_key_read(enum rse_key_id_builtin_t key, uint8_t *data,
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size_t data_size, size_t *data_length)
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{
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psa_status_t status;
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struct rse_crypto_pack_iovec iov = {
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.function_id = RSE_CRYPTO_EXPORT_PUBLIC_KEY_SID,
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.key_id = key,
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};
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psa_invec in_vec[] = {
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{.base = &iov, .len = sizeof(struct rse_crypto_pack_iovec)},
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};
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psa_outvec out_vec[] = {
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{.base = data, .len = data_size}
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};
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status = psa_call(RSE_CRYPTO_HANDLE, PSA_IPC_CALL,
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in_vec, IOVEC_LEN(in_vec),
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out_vec, IOVEC_LEN(out_vec));
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*data_length = out_vec[0].len;
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return status;
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}
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psa_status_t
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rse_platform_get_entropy(uint8_t *data, size_t data_size)
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{
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psa_status_t status;
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struct rse_crypto_pack_iovec iov = {
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.function_id = RSE_CRYPTO_GENERATE_RANDOM_SID,
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};
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psa_invec in_vec[] = {
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{.base = &iov, .len = sizeof(struct rse_crypto_pack_iovec)},
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};
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psa_outvec out_vec[] = {
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{.base = data, .len = data_size}
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};
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status = psa_call(RSE_CRYPTO_HANDLE, PSA_IPC_CALL,
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in_vec, IOVEC_LEN(in_vec),
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out_vec, IOVEC_LEN(out_vec));
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return status;
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}
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#endif
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