# 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