54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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/*
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* Copyright (c) 2017-2018 NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/err.h>
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#include <linux/trusty/trusty.h>
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#include <linux/trusty/trusty_ipc.h>
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#include <linux/ote_protocol.h>
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#define OTF_PORT_NAME "com.nvidia.tos.74629d40-1378-4d17-94d0e0af5d861d88"
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#define OTF_REPROGRAM_KEYS 5
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void trusty_restore_keyslots(void)
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{
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void *opaque_channel_context = NULL;
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int ret = 0;
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/* Return if Trusty Device is not enabled */
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if (!is_trusty_dev_enabled())
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return;
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ret = te_open_trusted_session(OTF_PORT_NAME, &opaque_channel_context);
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/* Return if this Trusty port or TA is not supported without pr_err */
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if (ret == -EOPNOTSUPP)
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return;
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else if (ret) {
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pr_err("%s:ERROR(%d): Failed to open trusted session\n",
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__func__, ret);
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return;
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}
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ret = te_launch_trusted_oper(NULL, 0U, OTF_REPROGRAM_KEYS,
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opaque_channel_context);
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if (ret) {
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pr_err("%s:ERROR(%d): Failed to launch operation\n",
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__func__, ret);
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/* Fall Through */
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}
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te_close_trusted_session(opaque_channel_context);
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}
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EXPORT_SYMBOL(trusty_restore_keyslots);
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