diff --git a/src/runtime/runtime_fe310.go b/src/runtime/runtime_fe310.go
index 5b315542..b7a3774b 100644
--- a/src/runtime/runtime_fe310.go
+++ b/src/runtime/runtime_fe310.go
@@ -14,8 +14,6 @@ import (
 
 type timeUnit int64
 
-const tickMicros = 32768 // RTC runs at 32.768kHz
-
 //go:extern _sbss
 var _sbss unsafe.Pointer
 
@@ -82,3 +80,26 @@ func putchar(c byte) {
 }
 
 const asyncScheduler = false
+
+func ticks() timeUnit {
+	// Combining the low bits and the high bits yields a time span of over 270
+	// years without counter rollover.
+	highBits := sifive.CLINT.MTIMEH.Get()
+	for {
+		lowBits := sifive.CLINT.MTIME.Get()
+		newHighBits := sifive.CLINT.MTIMEH.Get()
+		if newHighBits == highBits {
+			// High bits stayed the same.
+			return timeUnit(lowBits) | (timeUnit(highBits) << 32)
+		}
+		// Retry, because there was a rollover in the low bits (happening every
+		// 1.5 days).
+		highBits = newHighBits
+	}
+}
+
+func sleepTicks(d timeUnit) {
+	target := ticks() + d
+	for ticks() < target {
+	}
+}
\ No newline at end of file
diff --git a/src/runtime/runtime_fe310_baremetal.go b/src/runtime/runtime_fe310_baremetal.go
index 7c9fcf7f..e04560c4 100644
--- a/src/runtime/runtime_fe310_baremetal.go
+++ b/src/runtime/runtime_fe310_baremetal.go
@@ -4,36 +4,13 @@ package runtime
 
 import (
 	"device/riscv"
-	"device/sifive"
 )
 
+const tickMicros = 32768 // RTC clock runs at 32.768kHz
+
 func abort() {
 	// lock up forever
 	for {
 		riscv.Asm("wfi")
 	}
 }
-
-func ticks() timeUnit {
-	// Combining the low bits and the high bits yields a time span of over 270
-	// years without counter rollover.
-	highBits := sifive.RTC.RTCHI.Get()
-	for {
-		lowBits := sifive.RTC.RTCLO.Get()
-		newHighBits := sifive.RTC.RTCHI.Get()
-		if newHighBits == highBits {
-			// High bits stayed the same.
-			println("bits:", highBits, lowBits)
-			return timeUnit(lowBits) | (timeUnit(highBits) << 32)
-		}
-		// Retry, because there was a rollover in the low bits (happening every
-		// 1.5 days).
-		highBits = newHighBits
-	}
-}
-
-func sleepTicks(d timeUnit) {
-	target := ticks() + d
-	for ticks() < target {
-	}
-}
diff --git a/src/runtime/runtime_fe310_qemu.go b/src/runtime/runtime_fe310_qemu.go
index c5c38081..132515e7 100644
--- a/src/runtime/runtime_fe310_qemu.go
+++ b/src/runtime/runtime_fe310_qemu.go
@@ -7,6 +7,8 @@ import (
 	"unsafe"
 )
 
+const tickMicros = 100 // CLINT.MTIME increments every 100ns
+
 // Special memory-mapped device to exit tests, created by SiFive.
 var testExit = (*volatile.Register32)(unsafe.Pointer(uintptr(0x100000)))
 
@@ -16,13 +18,3 @@ func abort() {
 	// Signal a successful exit.
 	testExit.Set(0x5555)
 }
-
-func ticks() timeUnit {
-	return timestamp
-}
-
-func sleepTicks(d timeUnit) {
-	// Note: QEMU doesn't seem to support the RTC peripheral at the time of
-	// writing so just simulate sleeping here.
-	timestamp += d
-}