On Aug 6, 2008, at 3:41 PM, Wolfgang Denk wrote: > In message <D5CA3AB9-3AE3-439C-A169- > [EMAIL PROTECTED]> you wrote: >> >>>> Book-E will need different code for handing IVPR/IVORs than >>>> classic. >>> >>> Umm... the exception code itself may be different, but does this >>> imply >>> that the code used to copy / relocate the exception handlers to low >>> mem must be different, too? >> >> the copying bit should be do-able in generic code. >> >> 74xx_7xx/mpc512x/mpc5xx/mpc8xx/mpc8220/mpc824x/mpc83xx/mpc86xx: >> >> copy from [_start, _end_of_vectors] to 0x100 >> >> 4xx/85xx: >> >> copy from [_start_of_vectors, _end_of_vectors] to 0x100 > > OK, that's what I exoected. So we should plan to factor out this part > of code one day. > >>>>> Maybe. But then, these can use exception vectors at low mem, too, >>>>> right? >>>> >>>> They can, but it has to be setup. >>> >>> What is Linux doing? >> >> don't follow the question.. what is linux doing with what? > > Where is Linux setting up exception vectors on these systems?
they are at 0 for 6xx/8xx/40x systems. They can be anywhere on 85xx/ 44x (and we take advantage of this). - k ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
