diff --git a/doc/nativeJtag/soc_init.cfg b/doc/nativeJtag/soc_init.cfg
new file mode 100644
index 0000000..92d67cf
--- /dev/null
+++ b/doc/nativeJtag/soc_init.cfg
@@ -0,0 +1,20 @@
+set cpu_count 1
+
+
+for {set i 0} {$i < $cpu_count} {incr i} {
+    target create saxon.cpu$i vexriscv -endian little -chain-position $TAP_NAME -coreid $i -dbgbase [expr $i*0x1000+0x10B80000]
+    vexriscv readWaitCycles 40
+    vexriscv cpuConfigFile $CPU0_YAML
+    if {$SPINAL_SIM != "yes"} {
+        vexriscv jtagMapping 3 3 0 1 2 2
+    }
+}
+
+for {set i 0} {$i < $cpu_count} {incr i} {
+    targets saxon.cpu$i
+    poll_period 50
+    init
+    soft_reset_halt
+}
+
+puts " done"