tcl/target: Add Infineon XMC4000 family config

Base config, verified against XMC4500, XMC4400 and XMC4100/XMC4200 manuals.

Change-Id: I10907bdf307bc6d11dc5454bf5391758de49dc30
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-on: http://openocd.zylin.com/2480
Tested-by: jenkins
Reviewed-by: Jeff Ciesielski <jeffciesielski@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

tcl/target/xmc4xxx.cfg

@@ -0,0 +1,46 @@
+#
+# Infineon XMC4100/XMC4200/XMC4400/XMC4500 family (ARM Cortex-M4 @ 80-120 MHz)
+#
+
+if { [info exists CHIPNAME] } {
+	set _CHIPNAME $CHIPNAME
+} else {
+	set _CHIPNAME xmc4000
+}
+
+source [find target/swj-dp.tcl]
+
+#
+# SWJ-DP
+#
+if { [info exists CPU_JTAG_TAPID] } {
+	set _CPU_JTAG_TAPID $CPU_JTAG_TAPID
+} else {
+	set _CPU_JTAG_TAPID 0x4BA00477
+}
+
+#
+# SW_DP
+#
+if { [info exists CPU_SWD_TAPID] } {
+	set _CPU_SWD_TAPID $CPU_SWD_TAPID
+} else {
+	set _CPU_SWD_TAPID 0x2BA01477
+}
+
+if { [using_jtag] } {
+	set _CPU_TAPID $_CPU_JTAG_TAPID
+} else {
+	set _CPU_TAPID $_CPU_SWD_TAPID
+}
+
+swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPU_TAPID
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME
+
+if { ![using_hla] } {
+	cortex_m reset_config sysresetreq
+}
+
+adapter_khz 1000