[ECOS] Redboot "reset" command on iq80321 eval board

Rick Richardson rickr@mn.rr.com
Fri Dec 13 09:56:00 GMT 2002

I'm wondering if anyone has seen this behavior before, and knows of
a fix.

I have RedBoot in flash on an iq80321 eval board.  The board is
plugged into a PC, and switches S7E1-X are all set to factory.

After a hard reset, Redboot comes up fine, with the startup messages
displayed on the serial port, and the LEDs going thru the normal
sequence to state "A1".  The board is also reachable via the
ethernet port.

I then issue the RedBoot "reset" command.  This causes a soft reset by
setting a couple of bits in the ATU PCSR, i.e. exactly what a device
driver on the host side of the bus would want to do if it wanted to
reset a board that had gone out to lunch.

The board then goes thru the normal sequence of LED states (scrub
loop SL, etc.) until it reaches state "A1".  But this time, the
startup message doesn't come out the serial port, and the board
cannot be reached via ethernet either.

It looks like "something bad" happens at or after the point where
vectors.S does the "bl cyg_START".

Anybody seen this and have a fix?  I need the soft reset to work!


Rick Richardson  rickr@mn.rr.com        http://home.mn.rr.com/richardsons/
Stock information at your fingertips:   http://linuxtrade.0catch.com/

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