1# Credits to Petr Tesarik from SUSE who provided this updated configuration,
2# source: https://www.suse.com/c/debugging-raspberry-pi-3-with-jtag/
3transport select jtag
4
5# we need to enable srst even though we don't connect it
6reset_config trst_and_srst
7
8adapter_khz 1000
9jtag_ntrst_delay 500
10
11if { [info exists CHIPNAME] } {
12  set _CHIPNAME $CHIPNAME
13} else {
14  set _CHIPNAME rpi3
15}
16
17#
18# Main DAP
19#
20if { [info exists DAP_TAPID] } {
21   set _DAP_TAPID $DAP_TAPID
22} else {
23   set _DAP_TAPID 0x4ba00477
24}
25
26jtag newtap $_CHIPNAME tap -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_DAP_TAPID -enable
27dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.tap
28
29set _TARGETNAME $_CHIPNAME.a53
30set _CTINAME $_CHIPNAME.cti
31
32set DBGBASE {0x80010000 0x80012000 0x80014000 0x80016000}
33set CTIBASE {0x80018000 0x80019000 0x8001a000 0x8001b000}
34set _cores 4
35
36for { set _core 0 } { $_core < $_cores } { incr _core } {
37
38    cti create $_CTINAME.$_core -dap $_CHIPNAME.dap -ap-num 0 \
39        -ctibase [lindex $CTIBASE $_core]
40
41    target create $_TARGETNAME.$_core aarch64 \
42        -dap $_CHIPNAME.dap -coreid $_core \
43        -dbgbase [lindex $DBGBASE $_core] -cti $_CTINAME.$_core
44
45    $_TARGETNAME.$_core configure -event reset-assert-post "aarch64 dbginit"
46    $_TARGETNAME.$_core configure -event gdb-attach { halt }
47}
48