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23 lines
542 B
23 lines
542 B
5 days ago
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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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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* 2018/10/28 Bernard The unify RISC-V porting code.
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*/
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#ifndef TICK_H__
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#define TICK_H__
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//ask the CLINT for a timer interrupt.
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#define CLINT (0x2000000L)
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#define CLINT_MTIMECMP(hartid) (CLINT + 0x4000 + 4*(hartid))
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#define CLINT_MTIME (CLINT + 0xBFF8) // cycles since boot.
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int tick_isr(void);
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int rt_hw_tick_init(void);
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#endif
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