117 lines
2.7 KiB
INI
117 lines
2.7 KiB
INI
#
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# Nordic nRF52 series: ARM Cortex-M4 @ 64 MHz
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#
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source [find target/swj-dp.tcl]
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME nrf52
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}
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# Work-area is a space in RAM used for flash programming
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# By default use 16kB
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if { [info exists WORKAREASIZE] } {
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set _WORKAREASIZE $WORKAREASIZE
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} else {
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set _WORKAREASIZE 0x4000
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}
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if { [info exists CPUTAPID] } {
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set _CPUTAPID $CPUTAPID
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} else {
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set _CPUTAPID 0x2ba01477
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}
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swj_newdap $_CHIPNAME cpu -expected-id $_CPUTAPID
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dap create $_CHIPNAME.dap -chain-position $_CHIPNAME.cpu
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME cortex_m -dap $_CHIPNAME.dap
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adapter speed 1000
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$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
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if { [using_hla] } {
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echo ""
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echo "nRF52 device has a CTRL-AP dedicated to recover the device from AP lock."
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echo "A high level adapter (like a ST-Link) you are currently using cannot access"
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echo "the CTRL-AP so 'nrf52_recover' command will not work."
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echo "Do not enable UICR APPROTECT."
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echo ""
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} else {
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cortex_m reset_config sysresetreq
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$_TARGETNAME configure -event examine-fail nrf52_check_ap_lock
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}
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flash bank $_CHIPNAME.flash nrf5 0x00000000 0 1 1 $_TARGETNAME
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flash bank $_CHIPNAME.uicr nrf5 0x10001000 0 1 1 $_TARGETNAME
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# Test if MEM-AP is locked by UICR APPROTECT
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proc nrf52_check_ap_lock {} {
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set dap [[target current] cget -dap]
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set err [catch {set APPROTECTSTATUS [$dap apreg 1 0xc]}]
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if {$err == 0 && $APPROTECTSTATUS != 1} {
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echo "****** WARNING ******"
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echo "nRF52 device has AP lock engaged (see UICR APPROTECT register)."
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echo "Debug access is denied."
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echo "Use 'nrf52_recover' to erase and unlock the device."
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echo ""
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poll off
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}
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}
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# Mass erase and unlock the device using proprietary nRF CTRL-AP (AP #1)
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# http://www.ebyte.com produces modules with nRF52 locked by default,
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# use nrf52_recover to enable flashing and debug.
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proc nrf52_recover {} {
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set target [target current]
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set dap [$target cget -dap]
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set IDR [$dap apreg 1 0xfc]
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if {$IDR != 0x02880000} {
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echo "Error: Cannot access nRF52 CTRL-AP!"
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return
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}
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poll off
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# Reset and trigger ERASEALL task
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$dap apreg 1 4 0
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$dap apreg 1 4 1
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for {set i 0} {1} {incr i} {
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set ERASEALLSTATUS [$dap apreg 1 8]
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if {$ERASEALLSTATUS == 0} {
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echo "$target device has been successfully erased and unlocked."
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break
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}
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if {$i == 0} {
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echo "Waiting for chip erase..."
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}
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if {$i >= 150} {
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echo "Error: $target recovery failed."
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break
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}
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sleep 100
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}
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# Assert reset
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$dap apreg 1 0 1
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# Deassert reset
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$dap apreg 1 0 0
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# Reset ERASEALL task
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$dap apreg 1 4 0
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sleep 100
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$target arp_examine
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poll on
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}
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add_help_text nrf52_recover "Mass erase and unlock nRF52 device"
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