[U-Boot] u-boot for SPEAr1310

Stefan Roese
2012-02-23T15:22:27Z

On Thursday 23 February 2012 15:49:02 Marek Vasut wrote:
> > My experience is mostly SPEAr600 only right now. Not sure if there are
> > bigger differences between those SoC's in the BootROM.
>
> I believe the spear600 is totally different from 1300. But, simple:
>
> reset halt ; load ... ; go ...
>
> combo should work I believe. In case you're loading some U-Boot SPL, it's
> very good idea to put an "asm volatile("x : b x");" line into the SPL to
> make the CPU loop instead of try loading uboot. Since if the CPU is
> looping, you can break it with BDI, if it isn't looping and jumps to some
> garbage, it usually ends in undefined state and bootrom might further
> tamper with the CPU configuration.

Yes, good point. But a "STARTUP RESET ;no code is executed after reset" seems
to solve this problem as well. At least for me on SPEAr600. I know. Since I
broke my SPL from time to time. ;)

Best regards,
Stefan

--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de