[U-Boot] Help: U-Boot on Nokia RX-51 (aka N900)

[Pali Rohár]

On Thursday 01 September 2011 10:46:38 Marek Vasut wrote:
> On Thursday, September 01, 2011 10:42:48 AM Pali Rohár wrote:
> > Hello,
> > 
> > U-Boot patches which add support for Nokia RX-51 (aka N900) is here:
> > http://al.robotfuzz.com/~al/maemo/u-boot/
> > 
> > RX-51 has closed 2nd stage bootloader NOLO which can load kernel image
> > from nand (or usb) to ram and boot it. NOLO also done all HW
> > initializations. These U-Boot patches for RX-51 add support that
> > builded U-Boot binary can be loaded and booted by NOLO. So U-Boot will
> > be 3rd bootloader.
> > 
> > Patches are on top of revision bd2313078114c4b44c4a5ce149af43bcb7fc8854
> > and working fine. I rebased these patches on top of u-boot git master
> > repository, but booting failed. No output on device. Using git bisect I
> > found that problem appeared at revision
> > 
> > 561142af20f1fd7b425d9425730014e656defb91
> > ARM: implement relocation for ARM V7 (OMAP)
> > 
> > If I defined CONFIG_SYS_ARM_WITHOUT_RELOC U-Boot working and booting
> > fine
> > up to revision a9aa3926295df759306258e5e24cace414f53b67
> > 
> > So problem is that relocation patches broke RX-51 support. Can somebody
> > help me how to rewrite/port rx-51 patches to work with ARM relocation
> > (do
> > not forget that U-Boot is loaded by 2nd bootloader to RAM after HW is
> > initialized by NOLO)? If U-Boot will be working on RX-51 I will prepair
> > patches for upstreaming.
> 
> Does NOLO enable MMU ?

I'm not sure, because NOLO is proprietary, closed and without any 
documentation. Nobody knows what all NOLO doing...

> 
> btw can you post the patches to the ML for review ?

4 patches on http://al.robotfuzz.com/~al/maemo/u-boot/ is not mine and is not 
ready for merging - but working.

I'm prepairing patch series which fix some problems (keymap, watchog, ...). Now 
it is still based on bd2313078114c4b44c4a5ce149af43bcb7fc8854

> 
> Cheers

-- 
Pali Rohár
pali.rohar at gmail.com
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