6d5b4d709c
Kinetis driver checks MDM STAT register to detect secured state of MCU. Original version often reported a blank device as secured one. Change #3010 has not fixed all false reports. After changes in arm_adi_v5 infrastructure secured devices was not detected at all. New algorithm uses multiple MDM STAT reads and counts MDM_STAT_SYSSEC and MDM_STAT_FREADY bits. Both secured MCU and MCU locked-up in RESET/WDOG loop are detected reliably. Detection is run in both kx.cfg and klx.cfg from examine-start event, not examine-end as before. Event is configured only for non hla adapter. Minor fix in klx.cfg: commented out adapter_khz 24000 in reset-init. Such frequency is not supported in VLPR CPU mode and with JTAG. Change-Id: I2ec2b68c45bde9898159cd15fbdcbcfa538c41d9 Signed-off-by: Tomas Vanek <vanekt@fbl.cz> Reviewed-on: http://openocd.zylin.com/3547 Tested-by: jenkins Reviewed-by: Steven Stallion <stallion@squareup.com> Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
61 lines
1.5 KiB
INI
61 lines
1.5 KiB
INI
#
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# Freescale Kinetis KL series devices
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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 klx
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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 4kB
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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 0x1000
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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 0x0bc11477
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}
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swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME cortex_m -chain-position $_CHIPNAME.cpu
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$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size $_WORKAREASIZE -work-area-backup 0
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set _FLASHNAME $_CHIPNAME.flash
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flash bank $_FLASHNAME kinetis 0 0 0 0 $_TARGETNAME
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# Table 5-1. Clock Summary of KL25 Sub-Family Reference Manual
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# specifies up to 1MHz for VLPR mode.
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adapter_khz 1000
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reset_config srst_nogate
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if {![using_hla]} {
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# Detect secured MCU or boot lock-up in RESET/WDOG loop
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$_CHIPNAME.cpu configure -event examine-start {
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kinetis mdm check_security
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}
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# if srst is not fitted use SYSRESETREQ to
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# perform a soft reset
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cortex_m reset_config sysresetreq
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}
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# Table 5-1. Clock Summary of KL25 Sub-Family Reference Manual
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# specifies up to 24MHz for run mode; Table 17 of Sub-Family Data
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# Sheet rev4 lists 25MHz as the maximum frequency.
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# Uncoment only if VLPR mode is not used
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#$_TARGETNAME configure -event reset-init {
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# adapter_khz 24000
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#}
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