# SPDX-License-Identifier: GPL-2.0-or-later # The Broadcom BCM2711 used in Raspberry Pi 4 # No documentation was found on Broadcom website # Partial information is available in raspberry pi website: # https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711/ if { [info exists CHIPNAME] } { set _CHIPNAME $CHIPNAME } else { set _CHIPNAME bcm2711 } if { [info exists CHIPCORES] } { set _cores $CHIPCORES } else { set _cores 4 } if { [info exists USE_SMP] } { set _USE_SMP $USE_SMP } else { set _USE_SMP 0 } if { [info exists DAP_TAPID] } { set _DAP_TAPID $DAP_TAPID } else { set _DAP_TAPID 0x4ba00477 } jtag newtap $_CHIPNAME cpu -expected-id $_DAP_TAPID -irlen 4 adapter speed 4000 dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu # MEM-AP for direct access target create $_CHIPNAME.ap mem_ap -dap $_CHIPNAME.dap -ap-num 0 # these addresses are obtained from the ROM table via 'dap info 0' command set _DBGBASE {0x80410000 0x80510000 0x80610000 0x80710000} set _CTIBASE {0x80420000 0x80520000 0x80620000 0x80720000} set _smp_command "target smp" for { set _core 0 } { $_core < $_cores } { incr _core } { set _CTINAME $_CHIPNAME.cti$_core set _TARGETNAME $_CHIPNAME.cpu$_core cti create $_CTINAME -dap $_CHIPNAME.dap -ap-num 0 -baseaddr [lindex $_CTIBASE $_core] target create $_TARGETNAME aarch64 -dap $_CHIPNAME.dap -ap-num 0 -dbgbase [lindex $_DBGBASE $_core] -cti $_CTINAME set _smp_command "$_smp_command $_TARGETNAME" } if {$_USE_SMP} { eval $_smp_command } # default target is cpu0 targets $_CHIPNAME.cpu0