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Diffstat (limited to 'hw/riscv/sifive_clint.c')
-rw-r--r--hw/riscv/sifive_clint.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/hw/riscv/sifive_clint.c b/hw/riscv/sifive_clint.c
index 4893453..7cc606e 100644
--- a/hw/riscv/sifive_clint.c
+++ b/hw/riscv/sifive_clint.c
@@ -26,13 +26,10 @@
#include "hw/riscv/sifive_clint.h"
#include "qemu/timer.h"
-/* See: riscv-pk/machine/sbi_entry.S and arch/riscv/kernel/time.c */
-#define TIMER_FREQ (10 * 1000 * 1000)
-
static uint64_t cpu_riscv_read_rtc(void)
{
- return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), TIMER_FREQ,
- NANOSECONDS_PER_SECOND);
+ return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
+ SIFIVE_CLINT_TIMEBASE_FREQ, NANOSECONDS_PER_SECOND);
}
/*
@@ -59,7 +56,7 @@ static void sifive_clint_write_timecmp(RISCVCPU *cpu, uint64_t value)
diff = cpu->env.timecmp - rtc_r;
/* back to ns (note args switched in muldiv64) */
next = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
- muldiv64(diff, NANOSECONDS_PER_SECOND, TIMER_FREQ);
+ muldiv64(diff, NANOSECONDS_PER_SECOND, SIFIVE_CLINT_TIMEBASE_FREQ);
timer_mod(cpu->env.timer, next);
}