tcl/target/swj-dp.tcl

   1 # ARM Debug Interface V5 (ADI_V5) utility
   2 # ... Mostly for SWJ-DP (not SW-DP or JTAG-DP, since
   3 # SW-DP and JTAG-DP targets don't need to switch based
   4 # on which transport is active.
   5 #
   6 # declare a JTAG or SWD Debug Access Point (DAP)
   7 # based on the transport in use with this session.
   8 # You can't access JTAG ops when SWD is active, etc.
   9
  10 # params are currently what "jtag newtap" uses
  11 # because OpenOCD internals are still strongly biased
  12 # to JTAG ....  but for SWD, "irlen" etc are ignored,
  13 # and the internals work differently
  14
  15 # for now, ignore non-JTAG and non-SWD transports
  16 # (e.g. initial flash programming via SPI or UART)
  17
  18 # split out "chip" and "tag" so we can someday handle
  19 # them more uniformly irlen too...)
  20
  21 global using_jtag
  22 set using_jtag 1
  23
  24 proc swj_newdap {chip tag args} {
  25  global using_jtag
  26  set tran [transport select]
  27  if [string equal $tran "jtag"] { eval jtag newtap $chip $tag $args; set using_jtag 1 }
  28  if [string equal $tran "swd"] { eval swd newdap $chip $tag $args; set using_jtag 0 }
  29  if [string equal $tran "cmsis-dap"] { eval cmsis-dap newdap $chip $tag $args; set using_jtag 0 }
  30 }