65 lines
1.6 KiB
INI
65 lines
1.6 KiB
INI
# Broadcom bcm2711 on Raspberry Pi 4 as JTAG target
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# From https://gist.github.com/tnishinaga/46a3380e1f47f5e892bbb74e55b3cf3e
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# See also https://xihan94.gitbook.io/raspberry-pi/raspberry-pi-4-bringup
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echo "Booting JTAG for Raspberry Pi 4"
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME bcm2711
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}
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if { [info exists DAP_TAPID] } {
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set _DAP_TAPID $DAP_TAPID
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} else {
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set _DAP_TAPID 0x4ba00477
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}
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adapter speed 4000
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transport select jtag
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# we need to enable srst even though we don't connect it
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reset_config trst_and_srst
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jtag_ntrst_delay 500
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telnet_port 4444
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gdb_port 5555
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#
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# Main DAP
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#
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jtag newtap $_CHIPNAME tap -irlen 4 -expected-id $_DAP_TAPID
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dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.tap
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set _TARGETNAME $_CHIPNAME.a72
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set _CTINAME $_CHIPNAME.cti
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set DBGBASE {0x80410000 0x80510000 0x80610000 0x80710000}
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set CTIBASE {0x80420000 0x80520000 0x80620000 0x80720000}
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set _cores 4
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set _smp_command ""
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for { set _core 0 } { $_core < $_cores } { incr _core } {
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cti create $_CTINAME.$_core -dap $_CHIPNAME.dap -ap-num 0 \
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-baseaddr [lindex $CTIBASE $_core]
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target create ${_TARGETNAME}.${_core} aarch64 \
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-dap ${_CHIPNAME}.dap -coreid $_core \
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-dbgbase [lindex $DBGBASE $_core] -cti ${_CTINAME}.${_core}
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if {$_core != 0} {
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set _smp_command "$_smp_command ${_TARGETNAME}.${_core}"
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} else {
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set _smp_command "target smp ${_TARGETNAME}.${_core}"
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}
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$_TARGETNAME.$_core configure -event reset-assert-post "aarch64 dbginit"
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$_TARGETNAME.$_core configure -event gdb-attach { halt }
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}
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eval $_smp_command
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targets $_TARGETNAME.0
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