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Added and improved several prints related to the GDB connection
and various error states that may occur in relation to this
connection.
Change-Id: I233246190b613cc925b783561cfa3aa5267360fd
Signed-off-by: Jan Matyas <matyas@codasip.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6288
Reviewed-by: Tim Newsome <tim@sifive.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
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Standard C library free() allows NULL pointer as a parameter.
Change target_free_working_area() to conform this convention.
Remove NULL pointer tests before target_free_working_area() calls.
While on it add missing setting pointer to NULL after target_free_working_area().
Change-Id: I7c692ab04a9933398ba5bc614723ad0bdecb87b3
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6712
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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* Move more smarts into the target algorithm code, and rewrite that in C
so it's easier to understand/maintain.
* Support >24-bit addresses.
* Check for errors.
Change-Id: I3b1a143589fe6defafb8f95820aa682acc9646e7
Signed-off-by: Tim Newsome <tim@sifive.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6679
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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The command is a stub only, does nothing.
Change-Id: Ib3b8c2122a9f6f2e179bee34ac56d0adf367bfcc
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6730
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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The command might be a leftover from development of the driver.
There is no documentation what it does.
Change-Id: Iaa5aa1ac51638bd6acce172a5dd03846a165dc27
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6728
Tested-by: jenkins
Reviewed-by: Ivan-Artekit <ivan@artekit.eu>
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Add help texts from similar driver kinetis.c
While on it fix one existing help: the flash is obviously not NAND
Change-Id: Ibd295105586b008aaabf2fb4e4a75bf551266e38
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6727
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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The EFM32 flash driver misidentifies the EFR32BG1B on my board as EFR32MG1B.
Looks like this was caused by a copy-paste error, fixed.
Signed-off-by: Doug Brunner <doug.a.brunner@gmail.com>
Change-Id: I3067f7ba132c2562487da8c2371f63a4843230c1
Reviewed-on: https://review.openocd.org/c/openocd/+/6666
Tested-by: jenkins
Reviewed-by: Fredrik Hederstierna <fredrik.hederstierna@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Now that adapter serial is handled independently from the adapter
drivers, move inside jtag_libusb_open() the call to
adapter_get_required_serial(), so every adapter that uses libusb
will automagically get USB serial support.
Extend the documentation to list the adapters involved.
Change-Id: I75b3482d38f8ed3418329f3106c5e8b689fd460b
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6663
Tested-by: jenkins
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The driver hla defines the command 'hla_serial' to specify the
serial string of the adapter.
The driver st-link defines the command 'st-link serial' to specify
the serial string of the adapter.
Remove and deprecate the driver commands and use 'adapter serial'.
Change-Id: I9505c398a77125b1ebf4ba71da7baf4d663b75be
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6657
Tested-by: jenkins
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The driver jlink defines the command 'jlink serial' to specify the
serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Note: in former code the commands 'jlink serial' and 'jlink usb'
were mutually exclusive; running one of them would invalidate the
effect of a previous execution of the other. The new code gives
priority to 'adapter serial', even if executed before 'jlink usb'.
Change-Id: I920b0c136716f459b6fd6f7da8a01a7fa1ed389f
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6656
Reviewed-by: zapb <dev@zapb.de>
Tested-by: jenkins
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The driver xds110 defines the command 'xds110 serial' to specify
the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Note: the original command 'xds110 serial' used a complex and
undocumented conversion of the serial number through multibyte
string, wide-character string and C cast. The XDS110 I can access
and the lsusb dumps available through Google don't show any
exotic USB serial that require such conversion. The original
developer doesn't remember any constraint that mandates such
conversion (see comments in https://review.openocd.org/4322/).
The conversion is removed by this patch.
Change-Id: I38909918079b2c1797ad85ebec2fea1b33743606
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6655
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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The driver vsllink defines the command 'vsllink usb_serial' to
specify the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: Iadcc018b8aa8974ccd7156915b84e58270fad29d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6654
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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The driver presto defines the command 'presto serial' to specify
the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: I1a69acce7d4910082d2029d5941ae84f9424314c
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6653
Tested-by: jenkins
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The driver kitprog defines the command 'kitprog_serial' to specify
the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: I844cb815af01137392b6d12e1b5972fc77ac092d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6652
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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The driver ftdi defines the command 'ftdi serial' to specify the
serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: Ia5b1f325b9fab8f58b5ea70f8b807e50b148b939
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6651
Tested-by: jenkins
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The driver ft232r defines the command 'ft232r serial_desc' to
specify the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: I0bd909923a668420604fed3c9f6a260716b044c7
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6650
Tested-by: jenkins
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The driver cmsis_dap defines the command 'cmsis_dap_serial' to
specify the serial string of the adapter.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: I88e2d4de360a6c6f23529bb18494962a267250df
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6649
Tested-by: jenkins
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The driver aice defines the command 'aice serial' to specify the
serial string of the adapter, but actually does not use this value
in the code.
Remove and deprecate the driver command, and use 'adapter serial'.
Change-Id: I892e0a4e1b41a7a87adf54a5736abf7419f32979
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6648
Tested-by: jenkins
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Several adapter define their own command to specify the USB serial
number or serial string to be used during USB search.
Define a general command 'adapter serial' to be proposed as
replacement of the driver specific ones.
No driver is changed so far to use it.
Change-Id: I7631687a4163ccc63a9bdf3ad1fcb300fc483d3a
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6647
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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hla_target uses the same struct cortex_m_common as the standard cortex_m
target. Unlike the cortex_m target hla missed setting of common_magic.
Set commont_magic to help pointer verification.
Add convenience tests is_cortex_m_or_hla() and
is_cortex_m_with_dap_access()
Use proper test in cortex_m_verify_pointer() - this code relied on
unset common_magic on hla target before the change.
Change-Id: I4dae79f056c3d73adf524e26aa8ef2d3a57b471e
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6741
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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The missing initialization triggers a run-time error message:
Error: BUG: command 'psoc6 reset_halt' does not have the '.usage'
field filled out
Change-Id: I975e4ba99bd939aa924a9d62b1ab76b2ab5bf193
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6720
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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When a struct is initialized, missing fields are already filled
with zero or NULL.
This change simplifies scripts to compare documentation and
registered commands.
Change-Id: I96fbdfa98bbb1f2b5e2a9532faf5a15cb5bc28dd
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6719
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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To simplify scripts to compare documentation and registered
commands.
Change-Id: I3bed5ba80ea8be1fd615697e80d66b42d7b45fd1
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6718
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Just to avoid name clash when comparing documentation with
registered commands through scripts.
Change-Id: I8832545d8d9236ea5dabe6e73732f51e5246caff
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6717
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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Do not split in multiple lines the calls to register_commands*().
No change in code behaviour, just make it easy to grep in the code
and identify the commands that can be registered.
This would help detecting undocumented commands.
Change-Id: Id654e107cdabf7ee31fc3d227c1d2a59acc5669e
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6716
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Raise error if
* more than one plain SWD DAPs are defined
* plain and multidrop DAPs are mixed
* two multidrop DAPs have the same TARGETSEL value
Inspired by Graham Sanderson's http://review.openocd.org/4935
Change-Id: I7279744464f5cc6477e50695c596be9c5e5507bf
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6142
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Based on Graham Sanderson's http://review.openocd.org/4935
Unlike Graham Sanderson's version this patch does not add
any multidrop specific queuing.
Multidrop SWD is handled mostly by the same code as single SWD,
just a selection sequence is prepended to a SWD operation
as needed.
This is a minimal working implementation without checking for
configuration errors (mixing multidrop and non multidrop DPs,
multiple use of the same selection id etc...).
Multidrop switching likely demands changes in the adapter code.
Change-Id: I99a5742c209b49c0483e800f6105cb5e59a897d9
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6141
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Add multidrop_targetsel to struct adiv5_dap.
Add option -dp-id and -instance-id to dap create command.
Add convenience function dap_is_multidrop()
Change-Id: Ibb93abb5f50b3665c320a10c1497421035762134
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6140
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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dap_configure() contained first time init related tasks, as the call to
dap_init_instance() and the check for configured tap.
Move all first time init related stuff to dap_create() to make dap_configure()
usable in eventual stand-alone 'dap configure' command.
Change-Id: Ia86eadb4e960ce54e8581630d01af75720d2318d
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6702
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
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This is a preparatory change for swd multidrop, mostly refactoring.
Split swd_queue_dp_read/write() to inner and outer parts.
Use the inner parts in swd_queue_dp_bankselect(), swd_connect()
they do not need to check reconnect.
Use the outer parts exclusively in swd_dap_ops.
Rearrange the code to reduce forward declarations.
Change-Id: I47b7f0cb037e0032a267463f06ba02123ba96fe7
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6139
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
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Ignore ack received after DP_TARGETSEL write to prevent false error.
This change also fixes a bug:
Received ACK FAULT or JUNK value were incorrectly stored to queued_retval
and later used as bitbang_swd_run_queue() error return.
Use LOG_ERROR for parity mismatch.
Change-Id: I5ff1f658f221af78d8bbec8416a7a0fc64ba2550
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6700
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Ignore ack received after DP_TARGETSEL write to prevent false error.
Inspired by Graham Sanderson's http://review.openocd.org/4935
Change-Id: I04fd77cde3244de250743d8c8bfb93ed26379385
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6698
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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According to ARM IHI0031C+ chapter 2.3.11 "TARGETSEL, Target Selection register"
multidrop capable DPv2 must not drive SWDIO line during the response phase
of a write to TARGETSEL register.
Introduce helper functions swd_cmd_returns_ack() and swd_ack_to_error_code()
to centralize these tests from all drivers to one place.
Introduce distinct error codes for SWD protocol.
Partly inspired by Graham Sanderson's http://review.openocd.org/4935
Change-Id: Ie5f9edb22e066a933a534bf2b29e7e1d3087dad1
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6699
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
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Change-Id: I91fa5910670161b62a76fc834b6394c5a6c05395
Suggested-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6685
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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hla_layout.h uses explicitly tpiu_pin_protocol enum defined in
arm_tpiu_swo.h.
To make this header file consistent, add the missing include.
Change-Id: Ibecc279da8d6859ced2b8377e812554c747d81bb
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6687
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Added "jtag_vpi:" prefixes to log messages from the jtag_vpi
driver. The intention is to make it clear what the messages
relate to. Without the prefix, many of the log messages
won't make much sense to the user.
This change does not alter any functionality, just
the printed text.
Example:
Before:
Error: Can't connect to 127.0.0.1 : 5555
After:
Error: jtag_vpi: Can't connect to 127.0.0.1 : 5555
Change-Id: I779c379f52722b094b200d08b25ab0f7280d2845
Signed-off-by: Jan Matyas <matyas@codasip.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6686
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Otherwise 64-bit addresses can't work.
Signed-off-by: Tim Newsome <tim@sifive.com>
Change-Id: Id9f92ff8a1602153cc06810bcf515a9d0a89c81b
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6662
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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I missed this when I first add mcontrol6 support.
https://github.com/riscv/riscv-openocd/pull/648
Change-Id: I1a2706c7ea3a6757ed5083091cd2c764a8b0267c
Signed-off-by: Tim Newsome <tim@sifive.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6684
Tested-by: jenkins
Reviewed-by: Jan Matyas <matyas@codasip.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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The main intention is to get access to some of the CSRs
that were so far unknown to OpenOCD (tinfo, mcountinhibit, ...).
https://github.com/riscv/riscv-openocd/pull/659
Signed-off-by: Tim Newsome <tim@sifive.com>
Change-Id: I824fdb558d5c1f73432b0f56f3b0b4d865eceeba
Reviewed-on: https://review.openocd.org/c/openocd/+/6682
Tested-by: jenkins
Reviewed-by: Jan Matyas <matyas@codasip.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Change-Id: I1f7f0eed7a6e3626f5fde841ec7fa1d29906db29
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6696
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Partially extracted from https://review.openocd.org/4935
Change-Id: Ia3f197b257434a1a7979fdbc08936c7c541db1e2
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: graham sanderson <graham.sanderson@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6693
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
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Change-Id: Ifeda21ab7a40926166045f211b9e772aedff715d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6692
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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While there, replace the SWD_CMD_PARK macro to the magic number.
Change-Id: Id9094dcb2b010b9e894a5ed9e4a99d2287e5969c
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6691
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Change-Id: I4a51f3772cd94d7dda5a66a1d13acd24d0d0c63c
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6690
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Add the value DORMANT_TO_JTAG in the enum listing the SWJ-DP
switching sequences.
The corresponding bit-sequence is already available.
Change-Id: I6f1ffd29a8f5729ec70ce0303248bc251409d37d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6689
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
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If the target is in a state where S_REGRDY polling is necessary (slow
clock, low power state...?), OpenOCD will continue to use the slow
path even if the condition is temporary and the target at a later
point would be capable of fast reads again.
Revert to fast reads if a full register dump can be made without need
for polling any of the registers; presumably it will succeed the next
time too.
Change-Id: I557f0d90b7ce6f9d81aa409b6400fc9c83d16008
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6678
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
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Without the change cortex_m_debug_entry() reads all registers
calling cortex_m_load_core_reg_u32() for each register with
a poor usage of JTAG/SWD queue.
It is time consuming, especially on an USB FS based adapter.
Moreover if target_request debugmsgs are enabled, DCB_DCRDR
is saved and restored on each register read.
This change introduces cortex_m_fast_read_all_regs()
which queues all register reads and a single dap_run() transaction
does all work.
cortex_m_fast_read_all_regs() reads all registers unconditionally
regardless register cache is valid or not. This is a difference
from the original cortex_m_debug_entry() code.
cortex_m_debug_entry times from -d3 log, Cortex-M4F and CMSIS-DAP
(Kinetis K28F-FRDM kit)
target_request | time [ms]
debugmsgs | without the change | with the change
---------------+--------------------+-----------------
disable | 186 | 27
enable | 232 | 29
Added checking of DHCSR.S_REGRDY flag. If "not ready" is seen,
cortex_m->slow_register_read is set and fallback to the old
register read method cortex_m_slow_read_all_regs() is used
instead of cortex_m_fast_read_all_regs().
Change-Id: I0665d94b97ede217394640871dc451ec93410254
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/5321
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
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Accordingly to arm documentation [1], chapter C1.6.4, the
operation to read/write from/to core registers can require time,
and the specific flag DHCSR.S_REGRDY has to be polled to verify
that the operation has been completed.
The lack of check on S_REGRDY causes OpenOCD to fail handling
correctly the core registers on a Cortex-M4 emulated in a slow
FPGA, and it could also fail on devices clocked at very low speed
while using a fast adapter.
Poll S_REGRDY as specified in [1] while either reading or writing
the core registers.
A timeout of 0.5s is added. This could still be too small in some
extremely slow cases, but at least now we log the timeout event,
which can help tracking down such odd issue.
During register read include in the polling loop the read of DCRSR
and to flush the JTAG queue only once.
During register write, relax the write in DCRSR by removing the
atomicity that is now useless since followed by the atomic read to
S_REGRDY.
During register read include the read of DCRSR inside the polling
loop to relax the read of S_REGRDY since followed by the atomic
read to DCRSR.
This change has the drawback of adding other transfers to the
adapter while reading/writing the registers, so it is expected to
introduce some speed degradation during step-by-step.
[1] DDI0403E - "ARMv7-M Architecture Reference Manual"
Change-Id: I61f454248f11a3bec6dcf4c58a50c5c996d7ef81
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/5319
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
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DCB DHCSR register contains S_RETIRE_ST and S_RESET_ST bits cleared
on a read.
The change introduces a helper function cortex_m_cumulate_dhcsr_sticky().
Call this function each time DHCSR is read to preserve S_RESET_ST state
in the case of a reset event was detected.
Introduce cortex_m_read_dhcsr_atomic_sticky() convenience helper to
read DHCSR, store it to cortex_m->dcb_dhcsr and cumulate sticky bits.
The cumulated state of S_RESET_ST is read and cleared in cortex_m_poll()
Change-Id: Ib679599f850fd219fb9418c6ff32eed7cf5740da
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6180
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
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cortex_m->dcb_dhcsr caches status of DHCSR register.
Use it instead of local variable in cortex_m_soft_reset_halt()
like in other code.
Extracted from [1].
[1] Antonio Borneo: 6207: cortex_m: rework handling of dcb_dhcsr
Link: https://review.openocd.org/c/openocd/+/6207
Change-Id: I9a0aeba0b6b0b4969f05f4a32fc2fc8d244f56ca
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/6677
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
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