Jochen Friedrich wrote: > Hi Scott, > >> I just pulled Wolfgang's latest u-boot tree, and I don't see any fdt >> or ft_ calls in cpu/mpc8xx, nor in any 8xx board that I recognize. >> >> I may have been unclear in that I was talking about device tree >> support in u-boot, not the kernel. Obviously there's device tree >> support in the kernel, as evidenced by my reference to using cuImage. >> > > Can u-boot work on dtb trees embedded in an cuImage, at all?
No. If you want that, you need to use a normal uImage. > How would command line arguments work without a chosen > node? The bad old way: argument registers and the bd_t. The bootwrapper fills in /chosen/bootargs and other things based on that. It's just for compatibility; use uImage if you can. > I tried to boot a mpc823 using the 3 argument mboot command. > u-boot processed the dtb and added the chosen node correctly, > however the kernel immediately oopsed with unable to access > virtual memory when accessing the dtb memory as this memory > was not contained in the kernel MMU space. Make sure your version of u-boot understands the new bindings for things like brg frequency, or (less preferred) set it manually in your dts. -Scott _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
