add test_fw

test_fw/test_fw.c

@@ -0,0 +1,45 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "platform.h"
+#include "encoding.h"
+#include <string.h>
+
+extern void _init();
+int main() {
+  //board_init();
+  _init();
+  puts("after _init");
+
+// set only MPP
+__asm__ volatile (
+        "csrs mstatus, %0"
+        :
+        : "r"(MSTATUS_MPP | MSTATUS_MIE)
+        : "memory"
+    );
+
+puts("after enable MSTATUS_MIE/MPP");
+/*
+// enable MIE
+  write_csr(mie,MIE_MTIE | MIE_MSIE | MIE_MEIE);
+  puts("after enable MIE");
+*/
+
+  uint64_t time = get_aclint_mtime(aclint);
+  printf("in main() get_aclint_mtime return %d \n ",time);
+  set_aclint_mtime(aclint, 9);
+  time = get_aclint_mtime(aclint);
+  printf("in main() get_aclint_mtime  after set 9, return %d \n ",time);
+
+  set_aclint_mtimecmp(aclint, (time+3));
+  puts("set mtimecmp");
+
+  uint64_t timecmp = get_aclint_mtimecmp(aclint);
+  printf("in  main() get_aclint_mtimecmp return %d \n ",timecmp);
+
+  puts(" finshed ");
+  return 0;
+}