tcl: introduce using_(jtag|swd|hla) helpers and use them in reset handler

Barely tested with plain SWD transport.

Change-Id: I48b59136bf4294ffed737dba01f1b30ef83aa86b
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2003
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>

tcl/target/1986ве1т.cfg

@@ -48,7 +48,7 @@ if { [info exists IMEMORY] && [string equal $IMEMORY true] } {
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
    jtag_ntrst_delay 100
 }
 

tcl/target/at91sam3XXX.cfg

@@ -76,7 +76,7 @@ $_TARGETNAME configure -event gdb-flash-erase-start {
 adapter_khz 500
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
    jtag_ntrst_delay 100
 }
 

tcl/target/at91sam4XXX.cfg

@@ -56,7 +56,7 @@ $_TARGETNAME configure -event gdb-flash-erase-start {
 adapter_khz 500
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 

tcl/target/lpc17xx.cfg

@@ -72,7 +72,7 @@ adapter_khz 10
 
 # delays on reset lines
 adapter_nsrst_delay 200
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 200
 }
 

tcl/target/mdr32f9q2i.cfg

@@ -46,7 +46,7 @@ if { [info exists IMEMORY] && [string equal $IMEMORY true] } {
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
    jtag_ntrst_delay 100
 }
 

tcl/target/stm32f1x.cfg

@@ -61,7 +61,7 @@ if { [info exists BSTAPID] } {
   set _BSTAPID9 0x06428041
 }
 
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 \
 	-expected-id $_BSTAPID2 -expected-id $_BSTAPID3 \
 	-expected-id $_BSTAPID4 -expected-id $_BSTAPID5 \
@@ -82,7 +82,7 @@ flash bank $_FLASHNAME stm32f1x 0x08000000 0 0 0 $_TARGETNAME
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 

tcl/target/stm32f2x.cfg

@@ -34,7 +34,7 @@ if { [info exists WORKAREASIZE] } {
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 
@@ -58,7 +58,7 @@ if { [info exists BSTAPID] } {
   set _BSTAPID 0x06411041
 }
 
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID
 }
 

tcl/target/stm32f3x.cfg

@@ -34,7 +34,7 @@ if { [info exists WORKAREASIZE] } {
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 
@@ -58,7 +58,7 @@ if { [info exists BSTAPID] } {
   set _BSTAPID2 0x06432041
 }
 
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 -expected-id $_BSTAPID2
 }
 

tcl/target/stm32f4x.cfg

@@ -47,7 +47,7 @@ if { [info exists BSTAPID] } {
   set _BSTAPID2 0x06419041
 }
 
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID1 \
 	-expected-id $_BSTAPID2
 }
@@ -69,7 +69,7 @@ flash bank $_FLASHNAME stm32f2x 0 0 0 0 $_TARGETNAME
 adapter_khz 1000
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 

tcl/target/stm32l.cfg

@@ -30,7 +30,7 @@ if { [info exists WORKAREASIZE] } {
 adapter_khz 100
 
 adapter_nsrst_delay 100
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag_ntrst_delay 100
 }
 
@@ -54,7 +54,7 @@ if { [info exists BSTAPID] } {
   set _BSTAPID 0x06416041
 }
 
-if {$using_jtag} {
+if {[using_jtag]} {
  jtag newtap $_CHIPNAME bs -irlen 5 -expected-id $_BSTAPID
 }
 

tcl/target/stm32w108xx.cfg

@@ -38,7 +38,7 @@ if { [info exists ENDIAN] } {
 
 swj_newdap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
 
-if {$using_jtag} {
+if {[using_jtag]} {
  if { [info exists BSTAPID] } {
    set _BSTAPID $BSTAPID
    jtag newtap $_CHIPNAME bs -irlen 4 -ircapture 0xe -irmask 0xf -expected-id 0x269a862b

tcl/target/swj-dp.tcl

@@ -18,13 +18,8 @@
 # split out "chip" and "tag" so we can someday handle
 # them more uniformly irlen too...)
 
-global using_jtag
-set using_jtag 1
-
 proc swj_newdap {chip tag args} {
- global using_jtag
- set tran [transport select]
- if [string equal $tran "jtag"] { eval jtag newtap $chip $tag $args; set using_jtag 1 }
- if [string equal $tran "swd"] { eval swd newdap $chip $tag $args; set using_jtag 0 }
- if [string equal $tran "cmsis-dap"] { eval cmsis-dap newdap $chip $tag $args; set using_jtag 0 }
+ if {[using_jtag]} { eval jtag newtap $chip $tag $args }
+ if {[using_swd]} { eval swd newdap $chip $tag $args }
+ if {[string equal [transport select] "cmsis-dap"]} { eval cmsis-dap newdap $chip $tag $args }
 }