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| author | Matthijs van Duin <matthijs@rinnic-vaude.nl> | 2014-07-29 10:24:29 +0400 |
|---|---|---|
| committer | Paul Fertser <fercerpav@gmail.com> | 2015-03-09 06:27:45 +0000 |
| commit | dab4adb5ec50957a9ebbfa1123a634842cb2f002 (patch) | |
| tree | 9ee640846d8eee514682fb3c84f1089bb4454664 /tcl/interface | |
| parent | f7394049d3a6a932003edf5fa35d10fe8bc17352 (diff) | |
| download | riscv-openocd-dab4adb5ec50957a9ebbfa1123a634842cb2f002.zip riscv-openocd-dab4adb5ec50957a9ebbfa1123a634842cb2f002.tar.gz riscv-openocd-dab4adb5ec50957a9ebbfa1123a634842cb2f002.tar.bz2 | |
tcl/interface/ftdi/xdsv2: fix and clarify EMU* signals
The signal names are changed for consistency with TI's docs and
sources.
Change-Id: Ic5c5314daa20f6f610be8a848399f951d47aa137
Signed-off-by: Matthijs van Duin <matthijs@rinnic-vaude.nl>
Reviewed-on: http://openocd.zylin.com/2231
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Diffstat (limited to 'tcl/interface')
| -rw-r--r-- | tcl/interface/ftdi/xds100v2.cfg | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/tcl/interface/ftdi/xds100v2.cfg b/tcl/interface/ftdi/xds100v2.cfg index 44508ae..2628aa0 100644 --- a/tcl/interface/ftdi/xds100v2.cfg +++ b/tcl/interface/ftdi/xds100v2.cfg @@ -3,17 +3,56 @@ # # 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. +# interface 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 nEMU_EN -data 0x0020 -ftdi_layout_signal nEMU0 -data 0x0040 -ftdi_layout_signal nEMU1 -data 0x1000 +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 |