On Thu, Dec 18, 2008 at 12:51:29PM -0600, Kumar Gala wrote: > > On Dec 18, 2008, at 10:02 AM, Anton Vorontsov wrote: > >> On Thu, Dec 18, 2008 at 02:29:52AM -0800, Felix Radensky wrote: >>> >>> Hi, >>> >>> I'm experiencing a long (around 20 sec) delay from the moment >>> u-boot-1.3.4 passes control to linux and until the first kernel >>> message >>> appears on console. >> >> I saw somewhat similar behaviour on 83xx target, the cause was >> that my .config file contained bogus UDBG_RTAS_CONSOLE=y symbol >> (or was it PPC_EARLY_DEBUG_RTAS_PANEL=y? Or HVC_UDBG=y? I don't >> quite remember). >> >> Obviously, on 83xx we don't have RTAS or HVC stuff, but kernel >> didn't oops or hang completely, it was busy with executing various >> delays in those drivers and then just continued to load. > > Why are these drivers even doing anything on 83xx? Seems like they need > something to bind against or some detection of "HW".
Early console/UDBG is known to cause problems if enabled on inappropriate hardware. They start working very early, so it's hard for them to do the hw detection (no device tree yet, I presume). -- Anton Vorontsov email: cbouatmai...@gmail.com irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
