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/***************************************************************************
* Copyright (c) 2026 Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* AI Disclosure: This file was largely AI-generated by Claude Code (Opus 5.5).
* The AI-generated portions may be considered public domain (CC0-1.0)
* and not subject to the project's licence. The human contributor has
* reviewed and verified that the code is correct.
*
* SPDX-License-Identifier: MIT and CC0-1.0
**************************************************************************/
#ifndef RISCV_HWTIMER_H
#define RISCV_HWTIMER_H
#include <stdint.h>
/* Erbium machine timer. mtime and a single mtimecmp live in the CPU
register block; mtime_local_target selects which harts see the timer
interrupt and resets to all harts.
The mtime rate depends on the reference clock and time_config, which the
boot firmware programs. The default is the 2 MHz timebase used by the
Zephyr and NuttX Erbium ports; define ERBIUM_MTIME_FREQ_HZ when the
firmware selects another rate. */
#define ERBIUM_MTIME 0x80F40200UL
#define ERBIUM_MTIMECMP 0x80F40208UL
#ifndef ERBIUM_MTIME_FREQ_HZ
#define ERBIUM_MTIME_FREQ_HZ 2000000UL
#endif
#define TICKNUM_PER_TIMER (ERBIUM_MTIME_FREQ_HZ / TX_TIMER_TICKS_PER_SECOND)
int hwtimer_init(void);
int hwtimer_handler(void);
#endif /* RISCV_HWTIMER_H */
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