Introduced jtag_init and "jtag arp_init" to allow target scripts more control over how OpenOCD starts up and initializes the target.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2805 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/helper/startup.tcl

@@ -359,3 +359,13 @@ proc capture_catch {a} {
 	} result
 	return $result
 }
+
+
+# Executed during "init". Can be implemented by target script 
+# tar
+proc jtag_init {} {
+	if {[catch {jtag arp_init} err]!=0} {
+		# try resetting additionally
+		jtag arp_init-reset
+	}
+}