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26 lines
573 B
C
26 lines
573 B
C
#include "tx_port.h"
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#include "csr.h"
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#include "hwtimer.h"
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#define CLINT (0x02000000L)
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#define CLINT_TIME (CLINT+0xBFF8)
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#define CLINT_TIMECMP(hart_id) (CLINT+0x4000+8*(hart_id))
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int hwtimer_init(void)
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{
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int hart = riscv_get_core();
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uint64_t time = *((uint64_t*)CLINT_TIME);
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*((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
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return 0;
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}
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int hwtimer_handler(void)
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{
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int hart = riscv_get_core();
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uint64_t time = *((uint64_t*)CLINT_TIME);
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*((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
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return 0;
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}
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