--- /dev/null
+#
+# target configuration for
+# Xilinx UltraScale+
+#
+if { [info exists CHIPNAME] } {
+ set _CHIPNAME $CHIPNAME
+} else {
+ set _CHIPNAME uscale
+}
+
+#
+# DAP tap
+#
+if { [info exists DAP_TAPID] } {
+ set _DAP_TAPID $DAP_TAPID
+} else {
+ set _DAP_TAPID 0x5ba00477
+}
+
+jtag newtap $_CHIPNAME dap -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_DAP_TAPID
+
+#
+# PS tap
+#
+if { [info exists PS_TAPID] } {
+ set _PS_TAPID $PS_TAPID
+} else {
+ set _PS_TAPID 0x04710093
+}
+
+set jtag_configured 0
+
+jtag newtap $_CHIPNAME ps -irlen 12 -ircapture 0x1 -irmask 0x03 -expected-id $_PS_TAPID
+
+jtag configure $_CHIPNAME.ps -event setup {
+ global _CHIPNAME
+ global jtag_configured
+
+ if { $jtag_configured == 0 } {
+ # add the DAP tap to the chain
+ # See https://forums.xilinx.com/t5/UltraScale-Architecture/JTAG-Chain-Configuration-for-Zynq-UltraScale-MPSoC/td-p/758924
+ irscan $_CHIPNAME.ps 0x824
+ drscan $_CHIPNAME.ps 32 0x00000003
+ runtest 100
+
+ # setup event will be re-entered through jtag arp_init
+ # break the recursion
+ set jtag_configured 1
+ # re-initialized the jtag chain
+ jtag arp_init
+ }
+}
+
+set _TARGETNAME $_CHIPNAME.a53
+set _CTINAME $_CHIPNAME.cti
+
+set DBGBASE {0x80410000 0x80510000 0x80610000 0x80710000}
+set CTIBASE {0x80420000 0x80520000 0x80620000 0x80720000}
+set _cores 4
+
+for { set _core 0 } { $_core < $_cores } { incr _core } {
+
+ cti create $_CTINAME.$_core -chain-position $_CHIPNAME.dap -ap-num 1 \
+ -ctibase [lindex $CTIBASE $_core]
+
+ set _command "target create $_TARGETNAME.$_core aarch64 -chain-position $_CHIPNAME.dap \
+ -dbgbase [lindex $DBGBASE $_core] -cti $_CTINAME.$_core"
+
+ if { $_core != 0 } {
+ # non-boot core examination may fail
+ set _command "$_command -defer-examine"
+ set _smp_command "$_smp_command $_TARGETNAME.$_core"
+ } else {
+ # uncomment when "hawt" rtos is merged
+ #set _command "$_command -rtos hawt"
+ set _smp_command "target smp $_TARGETNAME.$_core"
+ }
+
+ eval $_command
+}
+
+eval $_smp_command
+targets $_TARGETNAME.0
+
+proc core_up { args } {
+ global _TARGETNAME
+ foreach { core } [set args] {
+ $_TARGETNAME.$core arp_examine
+ }
+}