riscv-openocd/tcl/interface/ftdi/xds100v2.cfg

# SPDX-License-Identifier: GPL-2.0-or-later

#
# Texas Instruments XDS100v2
#
# http://processors.wiki.ti.com/index.php/XDS100#XDS100v2_Features
#
# Detailed documentation is available only as CPLD verilog source code
# to the registered TI users.
#

adapter driver ftdi
ftdi vid_pid 0x0403 0xa6d0 0x0403 0x6010

ftdi layout_init 0x0038 0x597b

#  8000 z - unused
#  4000 0 > CPLD loopback          (all target side pins high-Z)
#  2000 z < !( cable connected )   (open drain on CPLD side for $reasons)
#  1000 0 > EMU1_oe
#
#   800 0 > PWR_RST = clear power-loss flag on rising edge
#   400 z < !( power-loss flag )
#   200 z < nSRST
#   100 0 > nSRST_oe
#
#    80 z < RTCK
#    40 0 > EMU0_oe
#    20 1 > EMU_EN
#    10 1 > nTRST
#
#     8 1 > TMS
#     4 z < TDO
#     2 0 > TDI
#     1 0 > TCK
#
# As long as the power-loss flag is set, all target-side pins are
# high-Z except the EMU-pins for which the opposite holds unless
# EMU_EN is high.
#
# To use wait-in-reset, drive EMU0 low at power-on reset. If the
# target normally reuses EMU0 for other purposes, clear EMU_EN to
# keep the EMU pins high-Z until the target is power-cycled.
#
# The LED only turns off at USB suspend, which is also the only way to
# set the power-loss flag manually. (Can be done in software e.g. by
# changing the USB configuration to zero.)
#

ftdi layout_signal nTRST -data 0x0010
ftdi layout_signal nSRST -oe 0x0100
ftdi layout_signal EMU_EN -data 0x0020
ftdi layout_signal EMU0 -oe 0x0040
ftdi layout_signal EMU1 -oe 0x1000
ftdi layout_signal PWR_RST -data 0x0800
ftdi layout_signal LOOPBACK -data 0x4000

echo "\nInfo : to use this adapter you MUST add ``init; ftdi set_signal PWR_RST 1; jtag arp_init'' to the end of your config file!\n"
# note: rising edge on PWR_RST is also needed after power-cycling the
# target