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20 authors
  1. Jun 17, 2009
  3. Jun 16, 2009
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · c928fe0f
      zwelch authored 
      Fix a bug preventing ICEpick "enable that TAP" code from working:
the "runtest" command wrongly finished with a JTAG reset, discarding
the work the TAP enable handler just finished!  Instead, JTAG should
stay in RUN/IDLE state.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2252 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      c928fe0f
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · a0c10dd2
      zwelch authored 
      Extend the internal JTAG event handlers to cover enable/disable,
and use those events to make sure that targets get "examined" if
they were disabled when the scan chain was first set up:

 - Remove "enum jtag_tap_event", merge with "enum jtag_event",
   so C code can now listen for TAP enable/disable events.

 - Report those events so they can trigger callbacks.

 - During startup, make target_examine() register a handler to
   catch ENABLE events for any then-disabled targets.

This fixes bugs like "can't halt target after enabling its TAP".

One class of unresolved bugs:  if the target has an ETM hooked
up to an ETB, nothing activates the ETB.  But starting up the
ETM without access to the ETB registers fails...


git-svn-id: svn://svn.berlios.de/openocd/trunk@2251 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      a0c10dd2
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · 491083a2
      zwelch authored 
      Tighten error handling on TAP enable/disable paths a bit:

 - Don't enable/disable unless it's necessary.  Those event
   handlers could have nasty side effects...

 - Don't *succeed* enables/disables if there was no code which
   could have implemented that action.  This prevents bugs like
   wrongly acting as if the scan chain changed.

 - Minor whitespace cleanup in enable/disable command code.

The big problem is still the lack of code to verify scan chains
were actually updated as requested; this adds a comment on that.
I suspect the best we can do near term will be to verify IDCODE.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2250 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      491083a2
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · 0de47861
      zwelch authored 
      Fix bug in a warning.  It warned about "huge IRlength" for an
older JRC with a two bit instruction register ... wrong!


git-svn-id: svn://svn.berlios.de/openocd/trunk@2249 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      0de47861
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · 5f9b74d0
      zwelch authored 
      Doc update:  say "jtag newtap ... -disable" records the
state after exiting the RESET state, matching the only
implementation we're working with so far (TI ICEpick-C).

Matching code updates.  Now we can be sure that the
"enabled" flag value is correct after JTAG resets.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2246 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      5f9b74d0
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · 03803a9d
      zwelch authored 
      Fix a memory leak in jtag_tap_free():  unregister the event
callback too.

Also fix the associated conceptual bug in unregistering JTAG
event callbacks:  since the same callback procedure is used
many times with different callback data (a TAP handle), that
data must be considered when unregistering any callback.

This could fix some crashes after TAP registration errors,
by making sure the reset event handler doesn't scribble over
memory that's now used by something else.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2245 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      03803a9d
    • zwelch's avatar
      David Brownell <david-b@pacbell.net>: · c7cfb341
      zwelch authored 
      Minor jtag cleanup:

 - remove hidden assumption about JTAG event numbering
 - move function declarations to a header
 - some end'o'line whitespace
 - use "calloc" not "malloc + memset"


git-svn-id: svn://svn.berlios.de/openocd/trunk@2244 b42882b7-edfa-0310-969c-e2dbd0fdcd60
      c7cfb341
  5. Jun 12, 2009
  7. Jun 11, 2009
  9. Jun 10, 2009
  11. Jun 09, 2009