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# SPDX-License-Identifier: GPL-2.0-or-later
# This is the Broadcom chip used in the Raspberry Pi 3,
# and in later models of the Raspberry Pi 2.
# Partial information is available in raspberry pi website:
# https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837
# https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2837b0
if { [info exists CHIPNAME] } {
set _CHIPNAME $CHIPNAME
} else {
set _CHIPNAME bcm2837
}
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 _CTIBASE {0x80018000 0x80019000 0x8001a000 0x8001b000}
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
$_TARGETNAME configure -event reset-assert-post { aarch64 dbginit }
set _smp_command "$_smp_command $_TARGETNAME"
}
if {$_USE_SMP} {
eval $_smp_command
}
# default target is cpu0
targets $_CHIPNAME.cpu0
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