[U-Boot-Users] 83xx, FSL_UEC reducing boot latency, printf causing crash

[Joakim Tjernlund <joakim.tjernlund@transmode.se>]

> -----Original Message-----
> From: Russell McGuire [mailto:rmcguire at videopresence.com] 
> Sent: den 21 december 2007 11:46
> To: u-boot-users at lists.sourceforge.net
> Cc: 'Kim Phillips'; joakim.tjernlund at transmode.se
> Subject: RE: 83xx, FSL_UEC reducing boot latency, printf causing crash
> 
> All,
> 
> Maybe somebody can help me understand what I am seeing
> Dealing with the printf causing crashes problem.
> 
> This only occurs if printfs are caleed from within the 
> uec_phy.c file, and
> only them within functions that are mapped as part of a phy 
> specific call,
> i.e. a function that was within a specific part, marvell, 
> national, etc... 
> 
> So when a read_status call is called, of course depending on your
> configuration it might get redirected to call genmii_read_status or
> equivlant.

Just to add, as I recall, it is the use of function pointers that
is the probem. These doesn't get relocated with normal u-boot
relocation. Full relocation adds stuff to __fixup_entries 
which will relocate function ptrs that normal relocation doesn't do.

 Jocke