Solved issue #6

0F_executionlevel/start.S

@@ -60,16 +60,16 @@ _start:
 5:  cmp     x0, #4
     beq     5f
     msr     sp_el1, x1
-    // enable AArch64 in EL1
-    mov     x0, #(1 << 31)      // AArch64
-    orr     x0, x0, #(1 << 1)   // SWIO hardwired on Pi3
-    msr     hcr_el2, x0
-    mrs     x0, hcr_el2
     // enable CNTP for EL1
     mrs     x0, cnthctl_el2
     orr     x0, x0, #3
     msr     cnthctl_el2, x0
     msr     cntvoff_el2, xzr
+    // enable AArch64 in EL1
+    mov     x0, #(1 << 31)      // AArch64
+    orr     x0, x0, #(1 << 1)   // SWIO hardwired on Pi3
+    msr     hcr_el2, x0
+    mrs     x0, hcr_el2
     // change execution level to EL1
     mov     x2, #0x3c4
     msr     spsr_el2, x2