1 # SPDX-License-Identifier: GPL-2.0-or-later
3 echo "Forcing reset_config to none to prevent OpenOCD from pulling SRST after the switch from LV is already performed"
6 jtag newtap $_CHIPNAME-lv tap -irlen 32 -ircapture 0x1 -irmask 0x1f -expected-id $_LVTAPID -expected-id $_CPUID
7 jtag configure $_CHIPNAME-lv.tap -event setup "jtag tapenable $_CHIPNAME.cpu"
8 jtag configure $_CHIPNAME-lv.tap -event tap-disable {}
10 jtag newtap $_CHIPNAME cpu -irlen 5 -ircapture 0x1 -irmask 0x1f -expected-id $_CPUID -disable
11 jtag configure $_CHIPNAME.cpu -event tap-enable "switch_lv_to_ejtag"
13 set _TARGETNAME $_CHIPNAME.cpu
14 target create $_TARGETNAME mips_m4k -endian little -chain-position $_TARGETNAME
16 proc switch_lv_to_ejtag {} {
19 irscan $_CHIPNAME-lv.tap 0x143ff3a
20 drscan $_CHIPNAME-lv.tap 32 1
21 jtag tapdisable $_CHIPNAME-lv.tap