cfg: add stm32 cmsis-dap compliant config

Change-Id: I3cfb21fdcef830e22b03bf4b5d58993728cc7475
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1543
Tested-by: jenkins

tcl/target/stm32l.cfg

@@ -1,5 +1,10 @@
 # script for stm32l
 
+#
+# stm32 devices support both JTAG and SWD transports.
+#
+source [find target/swj-dp.tcl]
+
 if { [info exists CHIPNAME] } {
    set _CHIPNAME $CHIPNAME
 } else {
@@ -25,7 +30,9 @@ if { [info exists WORKAREASIZE] } {
 adapter_khz 100
 
 adapter_nsrst_delay 100
-jtag_ntrst_delay 100
+if {$using_jtag} {
+ jtag_ntrst_delay 100
+}
 
 #jtag scan chain
 if { [info exists CPUTAPID] } {
@@ -35,7 +42,8 @@ if { [info exists CPUTAPID] } {
   # Section 24.6.3
    set _CPUTAPID 0x4ba00477
 }
-jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
+
+swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
 
 if { [info exists BSTAPID] } {
    # FIXME this never gets used to override defaults...
@@ -45,14 +53,16 @@ if { [info exists BSTAPID] } {
   # Section 24.6.2
   set _BSTAPID 0x06416041
 }
-jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID
+
+if {$using_jtag} {
+ jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID
+}
 
 set _TARGETNAME $_CHIPNAME.cpu
 target create $_TARGETNAME cortex_m -endian $_ENDIAN -chain-position $_TARGETNAME
 
 $_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
 
-
 # flash size will be probed
 set _FLASHNAME $_CHIPNAME.flash
 flash bank $_FLASHNAME stm32lx 0x08000000 0 0 0 $_TARGETNAME