[U-Boot] Is CCSRBAR relocation broken on P2020?

[Ira W. Snyder]

On Thu, Nov 10, 2011 at 10:07:41PM +0200, Felix Radensky wrote:
> Hi Ira,
> 
> On 11/10/2011 10:00 PM, Felix Radensky wrote:
> > Hello Timur, Kumar, U-Boot List,
> >
> > I'm working on porting U-Boot to the Freescale P2020 COM-Express board.
> > See the ML post from 2011-09-27 titled "[PATCH 0/2] mpc85xx: support 
> > for
> > Freescale COM Express P2020".
> >
> > When it was posted, the port was working on the top of tree U-Boot. 
> > This
> > included relocation of the CCSRBAR from the power on location of
> > 0xff700000 to 0xffe00000.
> >
> > Today I updated U-Boot to top of tree to address the comments in the
> > initial mailing list posting. Upon attempting to boot the board, I get
> > no console output. I have traced this to commit 6ca88b0958
> > ("powerpc/85xx: relocate CCSR before creating the initial RAM area").
> >
> > Indeed, making sure that the code does not run by adding the following
> > to my board config file causes U-Boot to start correctly. Though the
> > CCSRBAR is not relocated, as expected.
> >
> > #define CONFIG_SYS_CCSR_DO_NOT_RELOCATE
> >
> > As an alternative, reverting the commit causes my board to work again.
> > The CCSRBAR is relocated correctly.
> >
> > The P2020DS board is very similar to the board I am using. It performs
> > the same relocation of the CCSRBAR that I want to use as well.  Does
> > anyone have a P2020DS that they can test with the current top of tree
> > U-Boot? Does it boot? Can you send the output of "md ffe00000 1"?
> >
> > Thanks,
> > Ira
> >
> 
> I have P2020DS and can test it. Which configuration exactly, P2020DS or
> P2020DS_SDCARD ?
> 

The issue I've had with CCSR relocation has been fixed by Timur's
patchset titled "powerpc/85xx: fix definition of MAS register macros".
So you don't really need to test this.

If you'd like to test it anyway, use P2020DS_SDCARD, where you use the
boot_format tool + configuration file to write the U-Boot image to the
SD card. It should be booting with the help of the Freescale On-Chip
ROM.

Thanks,
Ira