# SPDX-License-Identifier: GPL-2.0-or-later # The Broadcom chip used in the Raspberry Pi 2 Model B # Partial information is available in raspberry pi website: # https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2836 if { [info exists CHIPNAME] } { set _CHIPNAME $CHIPNAME } else { set _CHIPNAME bcm2836 } 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 {0x80010000 0x80012000 0x80014000 0x80016000} set _smp_command "target smp" for { set _core 0 } { $_core < $_cores } { incr _core } { set _TARGETNAME $_CHIPNAME.cpu$_core target create $_TARGETNAME cortex_a -dap $_CHIPNAME.dap -coreid $_core -dbgbase [lindex $_DBGBASE $_core] $_TARGETNAME configure -event reset-assert-post { cortex_a dbginit } set _smp_command "$_smp_command $_CHIPNAME.cpu$_core" } if {$_USE_SMP} { eval $_smp_command } # default target is cpu0 targets $_CHIPNAME.cpu0