When the OpenOCD server starts up it records its state as TAP_RESET,
even though it could be anything. Then when it starts to examine
the scan chain, it calls jtag_add_tlr() which sees it doesn't have
any work to do, and so it does nothing. This can make the next
operations fail because they start from the wrong TAP state...
Instead of caring about the current recorded state, always enter
TAP_RESET by forcing five clocks with TMS high.
(NOTE: it seems most other JTAG adapter drivers have this same bug.)
git-svn-id: svn://svn.berlios.de/openocd/trunk@2763 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Change the handling of the "-ircapture" and "-irmask" parameters
to be slightly more sensible, given that the JTAG spec describes
what is required, and that we already require that conformance in
one place. IR scan returns some bitstring with LSBs "01".
- First, provide and use default values that satisfy the IEEE spec.
Existing TAP configs will override the defaults, but those parms
are no longer required.
- Second, warn if any TAP gets set up to violate the JTAG spec.
It's likely a bug, but maybe not; else this should be an error.
Improve the related diagnostics to say which TAP is affected.
And associated minor fixes/cleanups to comments and diagnostics.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2758 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Ready for discussion and tiny patches that tries out this scheme.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2755 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Added gdb_sync feature that allows GDB to sync up to target state.
Issue "monitor gdb_sync" and the next stepi, will return immediately
with updated register values to GDB.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2754 b42882b7-edfa-0310-969c-e2dbd0fdcd60
make sure that when there are two or more targets, their
various pre/post event reports are correctly ordered.
Previously, only the first target always saw its "pre"
method before SRST was asserted or deasserted.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2753 b42882b7-edfa-0310-969c-e2dbd0fdcd60
only expose the registers which are actually present. They
could be missing for two basic reasons:
- This version might not support them at all; e.g. ETMv1.1
doesn't have some control/status registers. (My sample of
ARM9 boards shows all with ETMv1.3 support, FWIW.)
- The configuration on this chip may not populate as many
registers as possible; e.g. only two data value comparators
instead of eight.
Includes a bugfix in the "etm info" command: only one of the
two registers is missing on older silicon, so show the first
one before bailing.
Update ETM usage docs to explain that those registers need to be
written to configure what is traced, and that some ETM configs
are not yet handled. Also, give some examples of the kinds of
constrained trace which could be arranged.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2752 b42882b7-edfa-0310-969c-e2dbd0fdcd60
system, removes 20 non-existent registers ... but still includes
over 45 (!) ETM registers which don't even exist there ...
- Integrate the various tables to get one struct per register
- Get rid of needless per-register dynamic allocation
- Double check list of registers:
* Remove sixteen (!) non-registers for data comparators
* Remove four registers that imply newer ETM than we support
* Change some names to match current architecture specs
- Handle more register info
* some are write-only
* some are read-only
* record which versions have them, just in case
- Reorganize the registers to facilitate removing the extras
* group e.g. comparator/counter #N registers together
* add and use lookup-by-ID
git-svn-id: svn://svn.berlios.de/openocd/trunk@2751 b42882b7-edfa-0310-969c-e2dbd0fdcd60
- Add a header comment
- Line up the ETM context struct, pack it a bit
- Remove unused context_id (this doesn't support ETMv2 yet)
- Make most functions static
- Remove unused string table and other needless lines of code
- Correct "tracemode" helptext
Also provide and use an etm_reg_lookup() to find entries in the ETM
register cache. This will help cope with corrected contents of that
cache, which doesn't include entires for non-existent registers.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2750 b42882b7-edfa-0310-969c-e2dbd0fdcd60
didn't turn up earlier. Is everyone still using gcc 3.x? Or is the x86
version of gcc 4.x much more relaxed?
git-svn-id: svn://svn.berlios.de/openocd/trunk@2749 b42882b7-edfa-0310-969c-e2dbd0fdcd60
of a (NOR) flash chip: allow passing "last" as an alias
for the number of the last sector.
Improve several aspects of error checking while we're at it.
From: Johnny Halfmoon <jhalfmoon@milksnot.com>
git-svn-id: svn://svn.berlios.de/openocd/trunk@2746 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Highlight that the "post-reset" event kicks in before the
scan chain is validated, which limits what can be done
in a post-reset handler.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2745 b42882b7-edfa-0310-969c-e2dbd0fdcd60
It can be sped up later, once it's known the PLLs are active.
Note that modern tools from TI all use adaptive clocking; and
that if that's done with OpenOCD, "too fast" is also a non-issue.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2740 b42882b7-edfa-0310-969c-e2dbd0fdcd60
garbage after the expected data (from the TAPs' BYPASS or IDCODE
registers).
NOTE that there was previously some code that looked like it was
trying to do this ... which didn't work, because it was looping
over the list of expected TAPs, and never checked *after* that
list completed! That could hide some *nasty* reset issues...
Also replace a now-obsolete scanchain length test with one that
behaves correctly; and update reporting of unexpected IDCODEs.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2739 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This patch modifies an error message which, in its original state,
I find somewhat unhelpful. So a small hint was added.
Signed-off-by: Johnny Halfmoon <jhalfmoon at milksnot.com>
git-svn-id: svn://svn.berlios.de/openocd/trunk@2738 b42882b7-edfa-0310-969c-e2dbd0fdcd60
done on exit from the config stage, how JTAG clocking issues can
trigger errors there, and how to avoid such problems.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2737 b42882b7-edfa-0310-969c-e2dbd0fdcd60
- Shrink messaging during resets, primarily by getting rid of
"nothing happened" noise that hides *useful* information.
- Improve: the "no IDCODE" message by identifying which tap only
supports BYPASS; and the TAP event strings.
Related minor code updates:
- Remove two needless tests when examining the chain: we know
we have a TAP, and that all TAPs have names.
- Clean up two loops, turning "while"s into "for"s which better
show what's actually being done.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2736 b42882b7-edfa-0310-969c-e2dbd0fdcd60
for disabling TAPs. We don't actually know how to make any
JRCs which do that yet; but when we do, this will matter.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2735 b42882b7-edfa-0310-969c-e2dbd0fdcd60
and Tcl/external):
- Reorder so *both* paths (TCK/TMS or TRST) can enable TAPs with
ICEpick ... first C code flags TAPs that got disabled, then call
any Tcl code that might want to re-enable them.
- Always call the C/internal handlers when JTAG operations can be
issued; previously that wasn't done when TRST was used.
Plus some small cleanups (whitespace, strings, better messaging
during debug and on some errors) to reset-related code.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2730 b42882b7-edfa-0310-969c-e2dbd0fdcd60
avoid a duplicate test.
Plus other cleanup in the same code: be "static", sane line lengths
for source and diagnostics, and fix misleading variable names.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2725 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Erase logic:
- command invocation
+ treat "nand erase N" (no offset/length) as "erase whole chip N"
+ catch a few more bogus parameter cases, like length == 0 (sigh)
- nand_erase() should be static
- on error
+ say which block failed, and if it was a bad block
+ don't give up after the first error; try to erase the rest
- on success, say which nand device was erased (name isn't unique)
Device list ("nand list"):
- say how many blocks there are
- split summary into two lines
- give example in the docs
Doc tweaks:
- Use @option{...} for DaVinci's supported hardware ECC options
For the record, I've observed that _sometimes_ erasing bad blocks causes
failure reports, and that manufacturer bad block markers aren't always
erasable (even when erasing their blocks doesn't trigger an error report).
git-svn-id: svn://svn.berlios.de/openocd/trunk@2724 b42882b7-edfa-0310-969c-e2dbd0fdcd60
- update comments to say so.
- update docs to clarify that the "arm9tdmi" command prefix
is a misnomer.
- bugfix some messages that wrongly assume only ARM9TDMI
based processors use this code.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2719 b42882b7-edfa-0310-969c-e2dbd0fdcd60
JTAG clocking by gating the core clock, and workarounds.
Most details are with the "halt" command, which is one
of the first places this issue will be noticed.
git-svn-id: svn://svn.berlios.de/openocd/trunk@2718 b42882b7-edfa-0310-969c-e2dbd0fdcd60
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