I submitted the patch to Gerrit:
https://review.openocd.org/c/openocd/+/7015

I hope I got your comments right :-)


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** [tickets:#236] Cannot flash Kinetis Z parts**

**Status:** new
**Milestone:** 0.9.0
**Created:** Thu May 02, 2019 09:41 AM UTC by Ramy
**Last Updated:** Mon May 30, 2022 03:48 PM UTC
**Owner:** nobody


I am using a Kinetis MK20DN512**Z**VLQ10 which is an earlier version of the 
MK20DN512VLQ10. Flashing the non-Z part works fine in OpenOCD 0.10, but when 
flashing the Z part, the following error occurs:
"Flash operation not possible in current run mode: SMC_PMSTAT: 0x0"

It looks like the code in the kinetis_check_run_mode function reads the 
SMC_PMSTAT register on the target device to check that it is in run mode. This 
register does not exist on the earlier revision K20 device, so pmstat is always 
0 and OpenOCD refuses to program the device.

I have attempted to use earlier versions of OpenOCD which don't have this 
check, but they fail when trying to flash either device.


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