rtems tester: Why does rtems_test_assert() just exit?

dufault at hda.com dufault at hda.com
Sat Sep 21 16:39:06 UTC 2019

> On Sep 21, 2019, at 11:44 , Joel Sherrill <joel at rtems.org> wrote:
> On Sat, Sep 21, 2019, 10:09 AM Peter Dufault <dufault at hda.com> wrote:
> Most of the failures I see on “beatnik” are detected by “rtems_test_assert()”.  That prints the assertion and calls exit, e.g. on beatnik:
> ] allocate most of memory - attempt to fail chroot - expect ENOMEM
> ] ../../../../../../rtems/c/src/../../testsuites/psxtests/psxchroot01/test.c: 126 status == -1
> ] fatal source: RTEMS_FATAL_SOURCE_EXIT, error code: 0
> ] bsp_fatal_extension(): RTEMS terminated -- no way back to MotLoad so I reset the card
> ] Printing a stack trace for your convenience :-)
> The failure is detected by the tester when the test platform requests a “tftp” transfer at an unexpected time:
> ] Subnet IP Address Mask =
> ] 
> =>  tftp: re-requesting exe; target must have reset
> ] Network File Load in Progress...
> =>  target reset condition detected
> =>  target reset: ./power-ctl 1 off-on
> ] Error Status: 00000081 - File not found.
> This takes at least 10 seconds using “motload” and the power switch I’m using.  Why doesn’t "rtems_test_assert()” output something that shows the test failed so that the reset can happen then?
> That's a good suggestion no one has made. That would work on all automated configurations.
> Also the beatnik bsp exit path could have reset enabled on exit. There is a parameter to pass on the configure like which enables reset on exit if the bsp has a functional bsp_reset. Sorry I'm at home on my phone and don't recall the exact name.
Beatnik does reset on exit.  That’s the “no way back to MotLoad so I reset the card” message.  First it prints out a stack trace, though.

The BSP reset will boot into MOTLOAD, so you get a first ten second hit, then the tester sees the “tftp” request and invokes the power cycle, so then there is a twelve second hit.  The total is a minimum 22 seconds:

- Beatnik issues a BSP reset;
- Ten seconds for MOTLOAD to get to the point it starts tftp;
- The tester detects this and issues a beatnik-tester reset, which in my setup is a power cycle;
- Two seconds for power-off/power-on sequence to the network power cycler;
- Another ten seconds for MOTLOAD to get to tftp again.

Peter Dufault
HD Associates, Inc.      Software and System Engineering

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