Hi Jens-Peter, linuxppc-embedded-bounces at ozlabs.org wrote on Donnerstag, 13. Januar 2005 13:37: > Hi all, > We've designed a custom board for an TQM860L module from > TQ-Components. > Now the following behaviour occurs: > After a soft reset (from linux or bootloader u-boot) the board hangs. > Only a hard reset (power cycle or RESIN# pin low of TQ-Modul) wakes > it up.
RESIN# is routed to pin PORESET# of the CPU (with some reset logic in between). > In the evaluation board STK8xxL from TQ the modul boots normally > after a soft reset. I assume it might be a forgotten pullup- or pull > down in our custom board. Try a look at the user manual: MPC860UM 3/2003, REV 2, Table 11-1.MPC860 Reset Responses and the following chapter. > By the way, how does linux handle a soft reset? U-Boot uses the checkstop reset (caused by a machine check after trying to execute an instruciton at a non-existing address). Hope this was somewhat of a help. Regards, Martin
