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# SPDX-License-Identifier: GPL-2.0-or-later
#
# Nordic nRF52, nRF53 and nRF91 CTRL-AP handling
#
if { [using_hla] } {
echo ""
echo "nRF device has a CTRL-AP dedicated to recover the device from AP lock."
echo "A high level adapter (like a ST-Link) you are currently using cannot access"
echo "the CTRL-AP so 'nrfxx_recover' command will not work."
echo "Do not enable UICR APPROTECT."
echo ""
} else {
# Test if debug/MEM-AP is locked by UICR APPROTECT
proc _nrf_check_ap_lock { ctrl_ap_num unlocked_value } {
set target [target current]
set dap [$target cget -dap]
set err [catch {set APPROTECTSTATUS [$dap apreg $ctrl_ap_num 0xc]}]
if {$err == 0 && $APPROTECTSTATUS < $unlocked_value} {
echo ""
echo "****** WARNING ******"
echo "\[$target\] device has AP lock engaged (see UICR APPROTECT register)."
echo "Debug access is denied."
echo "Use 'nrfxx_recover' to erase and unlock the device."
echo ""
poll off
return 1
}
return 0
}
# Mass erase and unlock the device using proprietary nRF CTRL-AP
proc _nrf_ctrl_ap_recover { ctrl_ap_num {is_cpunet 0} } {
set target [target current]
set dap [$target cget -dap]
set IDR [$dap apreg $ctrl_ap_num 0xfc]
if {$IDR != 0x12880000} {
echo "Error: Cannot access nRF CTRL-AP!"
return
}
poll off
# Reset and trigger ERASEALL task
$dap apreg $ctrl_ap_num 4 0
$dap apreg $ctrl_ap_num 4 1
for {set i 0} {1} {incr i} {
set ERASEALLSTATUS [$dap apreg $ctrl_ap_num 8]
if {$ERASEALLSTATUS == 0} {
echo "\[$target\] device has been successfully erased and unlocked."
break
}
if {$i == 0} {
echo "Waiting for chip erase..."
}
if {$i >= 150} {
echo "Error: \[$target\] recovery failed."
break
}
sleep 100
}
# Assert reset
$dap apreg $ctrl_ap_num 0 1
# Deassert reset
$dap apreg $ctrl_ap_num 0 0
# Reset ERASEALL task
$dap apreg $ctrl_ap_num 4 0
if { $is_cpunet } {
reset init
} else {
sleep 100
$target arp_examine
poll on
}
}
lappend _telnet_autocomplete_skip _nrf_check_ap_lock _nrf_ctrl_ap_recover
}
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