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@@ -1,26 +1,8 @@
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/*
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- * serial.c UART driver
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+ * serial.c UART driver
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+ * Copyright (c) 2006-2021, RT-Thread Development Team
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*
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- * COPYRIGHT (C) 2013, Shanghai Real-Thread Technology Co., Ltd
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- *
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- * This file is part of RT-Thread (http://www.rt-thread.org)
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- * Maintainer: bernard.xiong <bernard.xiong at gmail.com>
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- *
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- * 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,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License along
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- * with this program; if not, write to the Free Software Foundation, Inc.,
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- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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+ * SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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fang wei