[U-Boot] 85xx: MPC8536DS board does not build

Zang Roy-R61911 tie-fei.zang at freescale.com
Mon Aug 10 21:35:52 CEST 2009


 

> -----Original Message-----
> From: Kumar Gala [mailto:galak at kernel.crashing.org] 
> Sent: Monday, August 10, 2009 14:06 PM
> To: Zang Roy-R61911
> Cc: Wolfgang Denk; U-Boot-Users ML
> Subject: Re: 85xx: MPC8536DS board does not build
> 
> 
> On Aug 10, 2009, at 1:59 PM, Zang Roy-R61911 wrote:
> 
> >
> >
> >> -----Original Message-----
> >> From: Kumar Gala [mailto:galak at kernel.crashing.org]
> >> Sent: Monday, August 10, 2009 13:41 PM
> >> To: Wolfgang Denk
> >> Cc: U-Boot-Users ML; Zang Roy-R61911
> >> Subject: Re: 85xx: MPC8536DS board does not build
> >>
> >>
> >> On Aug 10, 2009, at 1:22 PM, Wolfgang Denk wrote:
> >>
> >>> Dear Kumar Gala,
> >>>
> >>> In message <0EB7516A-2F14-42F7-
> >>> A6ED-555ADFAB3105 at kernel.crashing.org> you wrote:
> >>>>
> >>>>> Allocate more space for U-Boot?
> >>>>
> >>>> I might turn of BEDBUG as its never been properly enabled on
> >>>> e500/85xx
> >>>> platforms.
> >>>
> >>> Is there any problem with the bigger image which I don't 
> understand
> >>> yet? Normally we just move down the TEXT_BASE by a sector,
> >> and that's
> >>> it.
> >>
> >> Not specifically, its just that ever 85xx image to date has been
> >> 512k.  I'm just trying to avoid this being the first one that
> >> changes
> >> that historic fact.  Especially since compilers like 
> gcc-4.3 seem to
> >> be able to fit the size in 512k.
> > We may have more requirements to support graphic in u-boot.
> > Sooner and later, the size will exceed 512K. Should we have 
> some plan
> > for this?
> 
> So if we are going to increase the limit from 512k do we go 
> to 768k or  
> 1M?  (Sector size on the board appears to 128k)
If there is no special reason, I'd like to expand it to 768K.
But my concern here is that it is better to limit 8536DS image to 512K.
For SD/NAND boot code, the u-boot will be copy to L2 cache. It is only
512K.

> 
> I would also like to know how big the flashes are on some of 
> the other  
> 85xx boards that u-boot supports.


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