1 files changed, 25 insertions, 0 deletions
diff --git a/ports/risc-v64/gnu/example_build/qemu_virt/hwtimer.c b/ports/risc-v64/gnu/example_build/qemu_virt/hwtimer.c
new file mode 100644
index 00000000..29cf1117
--- /dev/null
+++ b/ports/risc-v64/gnu/example_build/qemu_virt/hwtimer.c
@@ -0,0 +1,25 @@
+#include "tx_port.h"
+#include "csr.h"
+#include "hwtimer.h"
+
+#define CLINT		       (0x02000000L)
+#define CLINT_TIME             (CLINT+0xBFF8)
+#define CLINT_TIMECMP(hart_id) (CLINT+0x4000+8*(hart_id))
+
+
+int hwtimer_init(void)
+{
+	int hart = riscv_get_core();
+	uint64_t time = *((uint64_t*)CLINT_TIME);
+    	*((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
+	return 0;
+}
+
+int hwtimer_handler(void)
+{
+	int hart = riscv_get_core();
+        uint64_t time = *((uint64_t*)CLINT_TIME);
+        *((uint64_t*)CLINT_TIMECMP(hart)) = time + TICKNUM_PER_TIMER;
+	return 0;
+}
+