cfg: add Freescale FRDM-KL46Z Board

Change-Id: Ib585728f13a380eeeb2ada095f3e1a1c2aaf44cb
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1866


Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>

tcl/board/frdm-kl46z.cfg

+# This is an Freescale Freedom eval board with a single MKL46Z256VLL4 chip.
+# http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=FRDM-KL46Z
+#
+
+source [find interface/cmsis-dap.cfg]
+
+# increase working area to 16KB
+set WORKAREASIZE 0x4000
+
+# chip name
+set CHIPNAME MKL46Z256VLL4
+
+source [find target/kl46.cfg]

tcl/target/kl46.cfg

+#
+# Freescale Kinetis KL46 devices
+#
+
+#
+# KL46 devices supports SWD transport only.
+#
+source [find target/swj-dp.tcl]
+
+if { [info exists CHIPNAME] } {
+    set _CHIPNAME $CHIPNAME
+} else {
+    set _CHIPNAME kl46
+}
+
+if { [info exists ENDIAN] } {
+    set _ENDIAN $ENDIAN
+} else {
+    set _ENDIAN little
+}
+
+# Work-area is a space in RAM used for flash programming
+# By default use 4kB
+if { [info exists WORKAREASIZE] } {
+   set _WORKAREASIZE $WORKAREASIZE
+} else {
+   set _WORKAREASIZE 0x1000
+}
+
+if { [info exists CPUTAPID] } {
+    set _CPUTAPID $CPUTAPID
+} else {
+    set _CPUTAPID 0x0bc11477
+}
+
+swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME cortex_m -endian $_ENDIAN -chain-position $_CHIPNAME.cpu
+
+$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
+
+set _FLASHNAME $_CHIPNAME.flash
+flash bank $_FLASHNAME kinetis 0 0 0 0 $_TARGETNAME
+
+# if srst is not fitted use SYSRESETREQ to
+# perform a soft reset
+cortex_m reset_config sysresetreq