Hi Stephen, On Tue, Mar 20, 2012 at 5:42 PM, Stephen Warren <swar...@wwwdotorg.org> wrote: > On 03/20/2012 05:33 PM, Simon Glass wrote: > ... >> We cannot select the UART via CONFIG - remember that all of these >> boards have the same U-Boot binary. Please read that again :-) The >> device tree is the only thing that distinguishes them. All of the >> CONFIG options are identical for all boards. > > I don't agree that all the boards have the same U-Boot binary. At > present, there are about 6 Tegra boards in mainline U-Boot all with > different binaries.
Er, I was referring to all the boards that use the same config, not all the boards in mainline U-Boot. However I agree that we currently have 6 boards, we could fairly easily change this into one board with a device tree selector. > > Even with DT, I don't see anything wrong with having the low-level init > code parameterized and built per board (e.g. debug UART), but all the > higher level devices initialized/configured from device tree (e.g. I2C, > MMC, USB). It doesn't achieve the design goal I mentioned, but yes this is possible. > > Even if the binary result from the boot process is identical, but we did > something like I proposed a few emails back to inject the correct UART > ID into an initially common binary, you still get left with different > binaries per board, in terms of what you're actually flashing onto the > board. > > (yes, I'd be interested in seeing the SPL code you mentioned) OK. Let me know if we are on the same page on this topic, and I will start a new thread... Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
