clint.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <mcall.h>
#include <device/mmio.h>
 
#define SPIKE_CLINT_BASE        0x02000000
 
/* This function is used to initialize HLS()->time/HLS()->timecmp  */
void mtime_init(void)
{
        long hart_id = read_csr(mhartid);
        HLS()->time = (uint64_t *)(SPIKE_CLINT_BASE + 0xbff8);
        HLS()->timecmp = (uint64_t *)(SPIKE_CLINT_BASE + 0x4000 + 8 * hart_id);
}
 
void set_msip(int hartid, int val)
{
        write32((void *)(SPIKE_CLINT_BASE + 4 * (uintptr_t)hartid), !!val);
}