Hi Aneesh, On 08/01/2011 02:56 PM, Aneesh V wrote: > Hi Simon, > > On Monday 01 August 2011 04:50 PM, Simon Schwarz wrote: >> Hi Aneesh, >> >> I am working on the OS booting right now and have a bigger change of >> your code in spl.c in mind. >> >> Hope you can say one or two words what you think about it. >> >> THE PROBLEM >> For the direct OS boot and in some other situations - env image e.g., I >> have to load more than one image in SPL. >> >> This can be done by hardcoding these cases and use #ifdef or ifs to >> switch between them. Or I can implement a general image loading with >> lists. >> (This was discussed here: >> http://article.gmane.org/gmane.comp.boot-loaders.u-boot/102345) > > At the outset, wonder why we can not use the default bootargs string in > the kernel image instead of passing it from the bootloader. For direct > kernel boot from SPL, that looks like the best option for me. Then we > will not need all this. Am I missing something? > From the documentation it is mandatory for ARM to pass ATAGS (or FDT I assume): http://www.arm.linux.org.uk/developer/booting.php
So I think your solution would work - but IMHO would be too simple. The beauty is that we can save the config of ATAGS/FDT directly in u-boot and pass this image at the next boot to the SPL. This means we can boot the exact same configuration with the SPL as with standard u-boot - without recompiling the kernel. Trade-off: a more complex SPL. > best regards, > Aneesh Regards Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
