2022-06-12 16:42:27 -05:00
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# SPDX-License-Identifier: GPL-2.0-or-later
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2016-01-12 09:30:18 -06:00
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if { [info exists CPUTAPID] } {
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set _CPUTAPID $CPUTAPID
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} else {
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set _CPUTAPID 0x38289013
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}
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jtag newtap quark_d20xx quark -irlen 8 -irmask 0xff -expected-id $_CPUTAPID -disable
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jtag newtap quark_d20xx cltap -irlen 8 -irmask 0xff -expected-id 0x0e786013 -enable
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proc quark_d20xx_tapenable {} {
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echo "enabling quark core tap"
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irscan quark_d20xx.cltap 0x11
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drscan quark_d20xx.cltap 12 1
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runtest 10
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}
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proc quark_d20xx_tapdisable {} {
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echo "disabling quark core tap"
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irscan quark_d20xx.cltap 0x11
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drscan quark_d20xx.cltap 12 0
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runtest 10
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}
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proc quark_d20xx_setup {} {
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jtag tapenable quark_d20xx.quark
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}
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jtag configure quark_d20xx.quark -event tap-enable \
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"quark_d20xx_tapenable"
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jtag configure quark_d20xx.quark -event tap-disable \
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"quark_d20xx_tapdisable"
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target create quark_d20xx.quark quark_d20xx -endian little -chain-position quark_d20xx.quark
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quark_d20xx.quark configure -event reset-start {
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# need to halt the target to write to memory
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if {[quark_d20xx.quark curstate] ne "halted"} { halt }
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# set resetbreak via the core tap
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irscan quark_d20xx.quark 0x35 ; drscan quark_d20xx.quark 1 0x1
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# trigger a warm reset
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mww 0xb0800570 0x2
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# clear resetbreak
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irscan quark_d20xx.quark 0x35 ; drscan quark_d20xx.quark 1 0x0
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}
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jtag configure quark_d20xx.quark -event setup \
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"quark_d20xx_setup"
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