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riscv-openocd/tcl/target/ti-cjtag.cfg

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tcl/target: add SPDX tag For historical reasons, no license information was added to the tcl files. This makes trivial adding the SPDX tag through script: fgrep -rL SPDX tcl/ target| while read a;do \ sed -i '1{i# SPDX-License-Identifier: GPL-2.0-or-later\n }' $a;done With no specific license information from the author, let's extend the OpenOCD project license GPL-2.0-or-later to the files. Change-Id: I7b2610300b24cccd07bfa6fb5f1266970d5d3a1b Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7027 Tested-by: jenkins
2022-06-12 16:42:27 -05:00
# SPDX-License-Identifier: GPL-2.0-or-later
tcl/target: add CC2538 and CC26xx target files (with cJTAG procedure) Added support for the Cortex-M3 based TI low power RF SoC CC2538 and the CC26xx family. These chips need a start sequence for switching from cJTAG to JTAG before being used with OpenOCD, this is done in the tcl proc ti_cjtag_to_4pin_jtag in the ti-cjtag.cfg config. The configs for CC2538 and CC26xx run the start sequence on post-reset event and set the ICEPick IDCODE in the data register for OpenOCD to read, this is done so that every time OpenOCD resets the device, it will enable JTAG. Change-Id: I7db620211c0e7e03fad59d24fe31d23a9cdcfedc Signed-off-by: Jacob Palsson <jaaacke@gmail.com> Reviewed-on: http://openocd.zylin.com/2232 Tested-by: jenkins Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
2014-07-29 07:36:40 -05:00
# A start sequence to change from cJTAG to 4-pin JTAG
# This is needed for CC2538 and CC26xx to be able to communicate through JTAG
# Read section 6.3 in http://www.ti.com/lit/pdf/swru319 for more information.
proc ti_cjtag_to_4pin_jtag {jrc} {
# Bypass
irscan $jrc 0x3f -endstate RUN/IDLE
# Two zero bit scans and a one bit drshift
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DREXIT1 DRUPDATE RUN/IDLE
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
# A two bit drhift and a 9 bit drshift
pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRUPDATE RUN/IDLE
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRSHIFT DREXIT1 DRPAUSE
pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
# Bypass
irscan $jrc 0x3f -endstate RUN/IDLE
# Set ICEPick IDCODE in data register
irscan $jrc 0x04 -endstate RUN/IDLE
}