fix(GVM): enable waveform generate.

Author: xwxthu

driver/gvm_device/ventus.cpp

@@ -61,7 +61,7 @@ extern int vt_dev_open(vt_device_h *hdevice) {
     config.waveform.enable = waveform_enable;
     config.waveform.time_begin = waveform_begin;
     config.waveform.time_end = waveform_end;
-    config.waveform.filename = "waveform.fst";
+    config.waveform.filename = "waveform.gvm.fst";
     config.snapshot.enable = false;
     config.log.console.enable = true;
     config.log.console.level = "trace";
@@ -304,7 +304,7 @@ extern int vt_upload_kernel_file(vt_device_h hdevice, const char *filename, int
         std::vector<uint8_t> zeros(size - block->data.size(), 0);
         ventus_rtlsim_pmemcpy_h2d(device, vaddr + block->data.size(), zeros.data(), zeros.size());
     }
-
+    ventus_rtlsim_icache_invalidate(device);
     return 0;
 }
 int vt_upload_kernel_bytes(vt_device_h device, const void *content, uint64_t size, int taskID) {