1 # SPDX-License-Identifier: GPL-2.0-or-later
3 if { [info exists CPUTAPID] } {
4 set _CPUTAPID $CPUTAPID
6 set _CPUTAPID 0x38289013
9 jtag newtap quark_d20xx quark -irlen 8 -irmask 0xff -expected-id $_CPUTAPID -disable
10 jtag newtap quark_d20xx cltap -irlen 8 -irmask 0xff -expected-id 0x0e786013 -enable
12 proc quark_d20xx_tapenable {} {
13 echo "enabling quark core tap"
14 irscan quark_d20xx.cltap 0x11
15 drscan quark_d20xx.cltap 12 1
19 proc quark_d20xx_tapdisable {} {
20 echo "disabling quark core tap"
21 irscan quark_d20xx.cltap 0x11
22 drscan quark_d20xx.cltap 12 0
26 proc quark_d20xx_setup {} {
27 jtag tapenable quark_d20xx.quark
30 jtag configure quark_d20xx.quark -event tap-enable \
31 "quark_d20xx_tapenable"
33 jtag configure quark_d20xx.quark -event tap-disable \
34 "quark_d20xx_tapdisable"
36 target create quark_d20xx.quark quark_d20xx -endian little -chain-position quark_d20xx.quark
38 quark_d20xx.quark configure -event reset-start {
39 # need to halt the target to write to memory
40 if {[quark_d20xx.quark curstate] ne "halted"} { halt }
41 # set resetbreak via the core tap
42 irscan quark_d20xx.quark 0x35 ; drscan quark_d20xx.quark 1 0x1
43 # trigger a warm reset
46 irscan quark_d20xx.quark 0x35 ; drscan quark_d20xx.quark 1 0x0
49 jtag configure quark_d20xx.quark -event setup \