Recent Linux maps GPIOs from 1023 downwards so do not limit the number
to 1000.
This should fix#183.
Change-Id: I6d4f493b670be9ed9b82759f0fb686a9faddbbf5
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/4502
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Add support for the XDS110 debug probe using the APIs in the
probe's firmware. Includes support for older versions of the
firmware (with reduced performance) and support for a newer
version that includes OpenOCD specific APIs. Tested on various
TI LauchPads including MSP432P4, MSP432E4, CC2650, CC2652, and
CC3220SF.
Updated to add better support for swd switch. Removed issues found with
clang static analysis.
Updated to add rules entry for the XDS110 probe and Tiva DFU mode (which
affects both XDS110 and ICDI probes).
Change-Id: Ib274143111a68e67e80003797c6a68e3e80976b2
Signed-off-by: Edward Fewell <efewell@ti.com>
Reviewed-on: http://openocd.zylin.com/4322
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
gcc (GCC) 8.1.0 generates new warnings and thus fails the build.
The ARM disassembler warnings actually exposed a bug in SMALW, SMULW and
SMUL instructions decoding.
Reported by Eimers on IRC.
Change-Id: I200c70f75a9e07a1f13a592addc1c5fb37714440
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/4526
Tested-by: jenkins
Reviewed-by: Jiri Kastner <cz172638@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Minor fix, no code change, just align it to the block it belongs to.
Change-Id: I4c3b0d0bd00a55d5109d3723e5c4bfb2fc72e366
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4492
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Various fixes for memory leaks, adds a target cleanup for aarch64
and ARM CTI objects.
Change-Id: I2267f0894df655fdf73d70c11ed03df0b8f8d07d
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/4478
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
KitProg firmware does not send a zero length packet at the end of the bulk-in
transmission of a length divisible by a bulk packet size. This is inconsistent
with the USB specification and results in jtag_libusb_bulk_read()
waits forever when a transmission of specific size is received.
Limit bulk read size to expected number of bytes for problematic tranfer sizes.
Use 1 second timeout as the last resort.
Change-Id: Ice80306424afd76e9fbc6851911ffd5109c84501
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4426
Tested-by: jenkins
Reviewed-by: Bohdan Tymkiv <bhdt@cypress.com>
Also call adapter_exit() before command_exit() as the latter releases
Jim interpreter so JTAG events should be released before.
Fixes memory leak reported by valgrind
Change-Id: I493f3fcba34ea2b4234148e79a4e329c866e0f05
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4474
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
- add 'dap create' command to create dap instances
- move all dap subcmmand into the dap instance commands
- keep 'dap info' for convenience
- change all armv7 and armv8 targets to take a dap
instance instead of a jtag chain position
- restructure tap/dap/target relations, jtag tap no
longer references the dap, daps are now independently
created and initialized.
- clean up swd connect
- re-initialize DAP also on JTAG errors (e.g. after reset,
power cycle)
- update documentation
- update target files
Change-Id: I322cf3969b5407c25d1d3962f9d9b9bc1df067d9
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/4468
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
and move declaration of all transport_is_xxx() functions to transport.h
Change-Id: Ib229115b5017507b49655bc43b517ab6fb32f7a6
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4469
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Also uses calloc() for mpsse_ctx->write_buffer to prevent a false
positive valgrind report
"Syscall param ioctl(USBDEVFS_SUBMITURB).buffer points to uninitialised bytes(s)"
Change-Id: I91963371d15c21ea0fee4c40c1da86174db44520
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4418
Tested-by: jenkins
Change occurrences of char to uint8_t where appropriate as a binary
protocol is used to talk to this adapter.
This fixes a build issue with modern clang.
Change-Id: I21cc82c8cad148bd0977533c12c74a9d6ba2faff
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/4462
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This is a second try for this patch. I removed the queues from the
previous version. I made it compatible with SRST reset and added
support for those features that could be supported in raw binary
mode.
Change-Id: I96fc06abbea9873e98b414f34afd9043fd9c2a41
Signed-off-by: Mateusz Manowiecki <segmentation@fault.pl>
Reviewed-on: http://openocd.zylin.com/3960
Tested-by: jenkins
Reviewed-by: Eric Work <work.eric@gmail.com>
Reviewed-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Reviewed-by: Jacob Alexander <haata@kiibohd.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Create new command to refresh idcode list during runtime
and update Tap idcode.
Change-Id: Ie889a39a6f57cea207b2b9c9e42c51c97cfe4d8e
Signed-off-by: Hellosun Wu <wujiheng.tw@gmail.com>
Reviewed-on: http://openocd.zylin.com/4133
Tested-by: jenkins
Reviewed-by: Hsiangkai Wang <hsiangkai@gmail.com>
Reviewed-by: penny chen <penny6610231@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
This looks like some inappropriate stlink (mis-)feature and it messes
operations for writing to certain memory-mapped registers.
Discussed at https://forum.sparkfun.com/viewtopic.php?f=18&t=44949 .
Also known to be problematic for working with Kinetis parts.
Reported by robertfoss_ on IRC.
Change-Id: I8633aed13346c596000ba6c377758e1bb96db73f
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/4368
Tested-by: jenkins
Reviewed-by: Robert Foss <robert.foss@memcpy.io>
Reviewed-by: Andreas Bolsch <hyphen0break@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This patch should make the code logic more transparent and user
notifications more useful.
It also fixes a warning "array subscript is below array bounds" that
leads to FTBFS on Raspbian GNU/Linux 8 (jessie).
Change-Id: I626b6a5bc013dfee7d36cf196f0abab981d30675
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3931
Tested-by: jenkins
Previously for every bit scanned OpenOCD would write the bit, wait for
that bit to be scanned, and then read the result. This involves at least
2 context switches. Most of the time the next bit scanned does not
depend on the last bit we read, so with a buffer we now write a bunch of
bits to be scanned all at once, and then we wait for them all to be
scanned and have a result.
This reduces the time for one testcase where OpenOCD connects to a
simulator from 12.30s to 5.35s!
Running all our tests went from 13m13s to 3m55s.
Change-Id: Ie9fcea043ac1d7877a521125334ed47d4b3e1615
Signed-off-by: Tim Newsome <tim@sifive.com>
Reviewed-on: http://openocd.zylin.com/4312
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Some of these changes actually fix broken comparisons which could
occasionally fail. Others just clean up the code and make it more clear.
Change-Id: I6c398bdc45fa0d2716f48a74822457d1351f81a5
Signed-off-by: Christopher Head <chead@zaber.com>
Reviewed-on: http://openocd.zylin.com/4380
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
* Disables the data output pin while SWD is reading, so that a simple FTDI
SWD interface can be made by connecting TCK to SWD_CLK and TDI+TDO directly
to SWDIO. Enabled by setting SWDIO_OE to 0.
Change-Id: I7d3b71cf3f4eea163cb320aff69ed95d219190bd
Signed-off-by: Patrick Stewart <patstew@gmail.com>
Signed-off-by: Roger Lendenmann <roger.lendenmann@intel.com>
Reviewed-on: http://openocd.zylin.com/2274
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Tested-by: jenkins
This doesn't seem to make any sense.
Change-Id: I272de0ea3c0e86cc9a798cbd864050aaa597c3f0
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3933
Tested-by: jenkins
Leaving mode before closing added
Resolved a collision with JTAG API v1 error/status
checking overwriting SWIM status bytes
Change-Id: I35444ec0e6caace3e072c60085059602f4cdf0a4
Signed-off-by: Ake Rehnman <ake.rehnman@gmail.com>
Reviewed-on: http://openocd.zylin.com/4265
Tested-by: jenkins
Reviewed-by: Philipp Klaus Krause
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Fixed a bug in stlink_usb_read_mem/write_mem preventing large data transfers
The SWIM support in stlink_usb was basically non existent so I have
implemented the missing parts. The bCBWCBLength and dCBWDataTransferLength
for STLINK-V1 protocol was not correct so that was fixed. The reason for
adding SWIM support is to add STM8 support for OpenOCD.
I have tested the driver on:
STM8 discovery board with the built-in STLINK-V1
STM8 discovery board with STLINK-V2 dongle
STM32 vldiscovery board with the built-in STLINK-V1
STM32F1xxx processor with STLINK-V2 dongle
Change-Id: I4aa80a92fb0226174356adaf2f8ff949920a621f
Signed-off-by: Ake Rehnman <ake.rehnman@gmail.com>
Reviewed-on: http://openocd.zylin.com/3952
Tested-by: jenkins
Reviewed-by: Philipp Klaus Krause
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Commit ef02b69b14 included
a call to cmsis_dap_cmd_DAP_Connect() before calling
cmsis_dap_cmd_DAP_SWJ_Sequence(). According to comment
it is necessary for at least Keil ULINK-ME.
Commit 72c3464be4 added
a cmsis_dap_cmd_DAP_Disconnect() before connect call to pair
connection/disconnection. It solves some problems on Atmel EDBG.
Unfortunately calling either of cmsis_dap_cmd_DAP_Connect()
or cmsis_dap_cmd_DAP_Disconnect() deasserts reset signal.
So these workarounds break ability to connect under reset.
Use cmsis_dap_cmd_DAP_Disconnect() and cmsis_dap_cmd_DAP_Connect()
pair only if both SRST and TRST are deasserted.
Change-Id: I0914dae0a1360b8c7fe48231ff3867caedfb2dbe
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reported-by: Leonardo Sabino dos Santos <leonardo.sabino@gmail.com>
Reviewed-on: http://openocd.zylin.com/4100
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Extend HLA interface to allow multiple VID/PID pairs and use it to
autodetect the connected stlink version.
Change-Id: I35cd895b2260e23cf0e8fcb1fc11a78c2b99c69b
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3961
Tested-by: jenkins
Reviewed-by: Karl Palsson <karlp@tweak.net.au>
Reviewed-by: Andreas Bolsch <hyphen0break@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
The CMSIS-DAP used by NXP's LS1012ARDB board only supports JTAG,
and not SWD. Calling cmsis_dap_cmd_DAP_SWD_Configure returns with an
error (and doesn't actually do anything in the debugger).
Wrap the call to cmsis_dap_cmd_DAP_SWD_Configure in a check for
swd_mode, to make sure initialisation doesn't fail needlessly.
Change-Id: Id7e568cb6e36886bd7c5b3699d198a77a51c28c9
Signed-off-by: Bas Vermeulen <bas@daedalean.ai>
Reviewed-on: http://openocd.zylin.com/4294
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
The SWDIO buffer has to be enabled, by setting SWDIO_OE, for data on
SWDIO to reach the target. Explicitly do this before sending the
switch sequences for JTAG-to-SWD, etc.
This makes the code insensitive to the state of SWDIO_OE specified in
ftdi_layout_init. It used to work only on adapters with a non-inverted
SWDIO_OE inited to 1, or inverted SWDIO_OE inited to 0.
Change-Id: I4b9e520ac1c7ce2a437251a05fc036bc68de718e
Signed-off-by: Jonas Norling <jonas.norling@cyanconnode.com>
Reviewed-on: http://openocd.zylin.com/4270
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
GCC7 with -Wextra warns about switch-case blocks which fallthrough with
"this statement may fall through [-Werror=implicit-fallthrough=]". This
can be fixed by adding "special" comments: "/* fallthrough */".
See https://gcc.gnu.org/gcc-7/changes.html
Change-Id: Iba0be791dbdd86984489b2d9a0592bb59828da1e
Signed-off-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-on: http://openocd.zylin.com/4174
Tested-by: jenkins
If no serial number is specified, disable TCP/IP device discovery to
ensure that a user does not unintentionally operate on a remote device.
Change-Id: I6a7e913b8b679fae003825468cd86d2014849b29
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4214
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
If multiple devices are attached, do not automatically use the first
device found. Otherwise, a user may unintentionally operate on the
wrong device.
Change-Id: I08c4110b82e911e9e3e744d41830ffc6c56c44bf
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4213
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Use a human-readable error description rather than just the error name
in log messages.
Change-Id: Iab4ff7a7e4d9993983a07eab9f462820d4ee8190
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4212
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
libusb is now optional for libjaylink because support for TCP/IP
devices is always available.
Change-Id: I03f2566f8e1703276671ac0f353f72394d21f2f0
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4204
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Update to latest Git version and bump required libjaylink package
version to 0.2.0.
This version introduces support for devices with TCP/IP interface (e.g.
SEGGER Flasher ARM) and an additional debug level for I/O messages.
Change-Id: I030236aa704a91d1bb1843dd30010865947747e0
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/4202
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Change ftdi SWD driver and CMSIS-DAP to use it instead of LOG_DEBUG().
Change-Id: I17ba3de2086c7159209db61fba3faf067dfc5023
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3805
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
For some targets (like nrf51) sysfs driver is too slow. This
patch implements memory maped driver for IMX processors.
Mostly based on bcm2835gpio. Tested on imx6ul CPU. However, it should
work on any NXP IMX CPU.
Change-Id: Idace4c98181c6e9c64dd158bfa52631204b5c4a7
Signed-off-by: Grzegorz Kostka <kostka.grzegorz@gmail.com>
Reviewed-on: http://openocd.zylin.com/4106
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
This patch adds a driver for the SWD-only Cypress KitProg
programmer/debugger.
Change-Id: I3a9a8011a762781d560ebb305597e782a4f9a8e5
Signed-off-by: Forest Crossman <cyrozap@gmail.com>
Reviewed-on: http://openocd.zylin.com/3221
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
The need for this due to AICE having 3 interfaces
(EP1 IN-Interrupt, EP2 OUT-Bulk, EP6 IN-Bulk).
Without it, the function will choose first two endpoint as
read_ep/write_ep. This filter will check transfer types
when get endpoint-id. Without this patch, AICE will not
get correct endpoint.
Change-Id: I4da93c7de41cd19e5095b4bfb42078b21f40b678
Signed-off-by: Hellosun Wu <wujiheng.tw@gmail.com>
Reviewed-on: http://openocd.zylin.com/3218
Tested-by: jenkins
Reviewed-by: Hsiangkai Wang <hsiangkai@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Adapter clock frequency is set by 32-bit number and most adapters
limit the highest speed safely. There is no reason to impose strict
limit of 5000 kHz if some adapters can do more.
While on it give informative error message in case of zero adapter_khz.
Change-Id: I45c9804678e24496ea769ea9ca6036701b04dde9
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3945
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Without the change Atmel EDBG uses default clock freq about 168 kHz
instead adapter_khz configured before interface init.
Changing adapter speed after init works as expected.
Testing shows the EDBG firmware resets speed to default during DAP_SWJ_Sequence.
Tested with fw versions 03.1F.01AE and 02.09.0169
This change repeats the DAP_SWJ_Clock command after sending a SWJ sequence.
Change-Id: Ic70457c5df635f47cad5e70b0dc83a083ea1b3a3
Reported-by: Ladislav Laska <laska@kam.mff.cuni.cz>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3944
Tested-by: jenkins
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Increasing the trace buffer size on the st-link itself gives openocd a greater
chance of avoiding trace data overflowing within the st-link between polls
when there is a large amount of data being sent over the trace port
The st-link appears to split the given buffer size in half
while one half is awaiting transfer over USB, the other half is being
filled by DMA transfer. If you do not poll frequently enough, the DMA
transfer will overflow back to the start of its current buffer, resulting in
corrupted output
Buffer size of 4096 bytes is the maximum allowed by the st-link v2
Change-Id: I169189b021c34f8d18de1601d78b8c5890367d68
Signed-off-by: Austin Morton <austinpmorton@gmail.com>
Reviewed-on: http://openocd.zylin.com/4085
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
Define a target_addr_t type to support 32-bit and 64-bit addresses at
the same time. Also define matching TARGET_PRI*ADDR format macros as
well as a convenient TARGET_ADDR_FMT.
In targets that are 32-bit (avr32, nds32, arm7/9/11, fm4, xmc1000)
be least invasive by leaving the formatting unchanged apart from the
type;
for generic code adopt TARGET_ADDR_FMT as unified address format.
Don't silently change gdb formatting here, leave that to later.
Add COMMAND_PARSE_ADDRESS() macro to abstract the address type.
Implement it using its own parse_target_addr() function, in the hopes
of catching pointer type mismatches better.
Add '--disable-target64' configure option to revert to previous 32-bit
target address behavior.
Change-Id: I2e91d205862ceb14f94b3e72a7e99ee0373a85d5
Signed-off-by: Dongxue Zhang <elta.era@gmail.com>
Signed-off-by: David Ung <david.ung.42@gmail.com>
[AF: Default to enabling (Paul Fertser), rename macros, simplify]
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
When SRST is never enabled, the global jtag_srst variable is left at its
initial state, that is, -1, and it does _not_ mean SRST is currently
asserted. Same about TRST.
Fixes "reset halt" in cases when srst_pulls_trst but srst usage is not
enabled.
Change-Id: I8d2e9120479de4cfbf5561033926c9ef945eecc9
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3943
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Fix build failure when libusb dev files are not available and
so usb_blaster is disabled.
Change-Id: I4cda7df689cdb4b62b733cbbab813241cf561e29
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3920
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
This prevents clean build when --enable-verbose-jtag-io is used.
Change-Id: I5c9e6968cfa425b1f6f92f59156b6ae38cb9af18
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3907
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Khem Raj
Paul Fertser
Edward Fewell
Antonio Borneo
Matthias Welwarsky
Tomas Vanek
Matej Kogovsek
Mateusz Manowiecki
Hellosun Wu
Tim Newsome
Christopher Head
Patrick Stewart
Ake Rehnman
Forest Crossman
Bas Vermeulen
Jonas Norling
Freddie Chopin
Marc Schink
Andreas Fritiofson
Grzegorz Kostka
Austin Morton
Dongxue Zhang