# SPDX-License-Identifier: GPL-2.0-or-later

#
# Nordic nRF53 series: dual ARM Cortex-M33, multidrop SWD
#

source [find target/swj-dp.tcl]
source [find mem_helper.tcl]

if { [info exists CHIPNAME] } {
	set _CHIPNAME $CHIPNAME
} else {
	set _CHIPNAME nrf53
}

# Work-area is a space in RAM used for flash programming
# By default use 16kB
if { [info exists WORKAREASIZE] } {
   set _WORKAREASIZE $WORKAREASIZE
} else {
   set _WORKAREASIZE 0x4000
}

if { [info exists CPUTAPID] } {
	set _CPUTAPID $CPUTAPID
} else {
	set _CPUTAPID 0x6ba02477
}

# Configurable instance ID resides in application UICR TINSTANCE
if { [info exists SWD_INSTANCE_ID] } {
	set _SWD_INSTANCE_ID $SWD_INSTANCE_ID
} else {
	set _SWD_INSTANCE_ID 0
}

swj_newdap $_CHIPNAME cpu -expected-id $_CPUTAPID

if { [info exists SWD_MULTIDROP] } {
	dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu -dp-id 0x0070289 -instance-id $_SWD_INSTANCE_ID
} else {
	dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
}

set _TARGETNAME_APP $_CHIPNAME.cpuapp
target create $_TARGETNAME_APP cortex_m -dap $_CHIPNAME.dap

$_TARGETNAME_APP configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0

# The network core is not accessible over HLA
if { ![using_hla] } {
	set _TARGETNAME_NET $_CHIPNAME.cpunet
	target create $_TARGETNAME_NET cortex_m -dap $_CHIPNAME.dap -ap-num 1 -defer-examine

	targets $_TARGETNAME_APP

	$_TARGETNAME_NET configure -work-area-phys 0x21000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
}

# Keep adapter speed less or equal 2000 kHz or flash programming fails!
adapter speed 1000

source [find target/nrf_common.cfg]

flash bank $_CHIPNAME.app.flash nrf5 0x00000000 0 0 0 $_TARGETNAME_APP
flash bank $_CHIPNAME.app.uicr nrf5 0x00FF8000 0 0 0 $_TARGETNAME_APP

if { ![using_hla] } {

	flash bank $_CHIPNAME.net.flash nrf5 0x01000000 0 0 0 $_TARGETNAME_NET
	flash bank $_CHIPNAME.net.uicr nrf5 0x01FF8000 0 0 0 $_TARGETNAME_NET

	# System reset sets NETWORK.FORCEOFF which keeps the network core in reset
	# Don't touch network core during reset
	$_TARGETNAME_NET configure -event reset-assert {}
	# and start it after application core reset is finished to make all flash accessible
	$_TARGETNAME_APP configure -event reset-init "nrf53_cpunet_release $_CHIPNAME"

	$_TARGETNAME_APP cortex_m reset_config sysresetreq
	$_TARGETNAME_NET cortex_m reset_config sysresetreq

	$_TARGETNAME_APP configure -event examine-fail { _nrf_check_ap_lock 2 3 }
	$_TARGETNAME_NET configure -event examine-fail { _nrf_check_ap_lock 3 3 }

	$_TARGETNAME_NET configure -event gdb-attach "_nrf53_cpunet_gdb_attach $_CHIPNAME"

	proc _nrf53_cpunet_gdb_attach { _CHIPNAME } {
		set _TARGETNAME_APP $_CHIPNAME.cpuapp
		set _TARGETNAME_NET $_CHIPNAME.cpunet
		set RESET_NETWORK_FORCEOFF 0x50005614

		set is_off [$_TARGETNAME_APP read_memory $RESET_NETWORK_FORCEOFF 32 1]
		if { $is_off } {
			nrf53_cpunet_release $_CHIPNAME
			$_TARGETNAME_NET arp_poll
			$_TARGETNAME_NET arp_waitstate halted 100
		} else {
			if { ![$_TARGETNAME_NET was_examined] } {
				$_TARGETNAME_NET arp_examine
				$_TARGETNAME_NET arp_poll
			}
			set s [$_TARGETNAME_NET curstate]
			if { ![string compare $s "halted"] } {
				halt
			}
		}
	}
	lappend _telnet_autocomplete_skip _nrf53_cpunet_gdb_attach

	# Release the network core
	proc nrf53_cpunet_release { {_CHIPNAME nrf53} } {
		set _TARGETNAME_APP $_CHIPNAME.cpuapp
		set _TARGETNAME_NET $_CHIPNAME.cpunet
		set RESET_NETWORK_FORCEOFF 0x50005614
		set RESET_NETWORK_WORKAROUND 0x50005618
		set CORTEX_M_DCB_DEMCR 0xE000EDFC

		$_TARGETNAME_APP mww $RESET_NETWORK_WORKAROUND 1
		$_TARGETNAME_APP mww $RESET_NETWORK_FORCEOFF 0
		$_TARGETNAME_APP mww $RESET_NETWORK_FORCEOFF 1
		set err [catch {$_TARGETNAME_NET arp_examine}]
		if { $err } {
			if { ![_nrf_check_ap_lock 3 3] } {
				echo "Error: \[$_TARGETNAME_NET\] examination failed"
			}
			return
		}
		# set TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET
		$_TARGETNAME_NET mww $CORTEX_M_DCB_DEMCR 0x01000501
		# Write DEMCR directly intead of permanetly setting by cortex_m vector_catch reset
		# following cortex_m_endreset_event() restores the original DEMCR value
		$_TARGETNAME_APP mww $RESET_NETWORK_FORCEOFF 0
		$_TARGETNAME_APP mww $RESET_NETWORK_WORKAROUND 0
	}

	# Mass erase and unlock the device using proprietary nRF CTRL-AP (AP #2 or #3)
	proc nrf53_cpuapp_recover {} {
		_nrf_ctrl_ap_recover 2
	}
	add_help_text nrf53_cpuapp_recover "Mass erase flash and unlock nRF53 application CPU"

	proc nrf53_recover {} {
		_nrf_ctrl_ap_recover 3 1
	}
	add_help_text nrf53_recover "Mass erase all device flash and unlock nRF53"
}