On 20 February 2014 22:34, Masahiro Yamada <yamad...@jp.panasonic.com> wrote: > Commit 6ab6b2af deleted ./u-boot.dtb because it was a copy > of dts/dt.dtb. > > But Simon suggested to keep u-boot.dtb at the top directory > because it is a build output. > > After discussions, we agreed on revival of ./u-boot.dtb. > > Signed-off-by: Masahiro Yamada <yamad...@jp.panasonic.com> > Cc: Simon Glass <s...@chromium.org> > Cc: Tom Rini <tr...@ti.com>
Acked-by: Simon Glass <s...@chromium.org> > --- > > Hello Simon, > > In our discussions, I memtioned to post version 4 > of "dts: re-write dts/Makefile more simply with Kbuild". > > But, before that, version 3 has been applied. > > Anyway, I promised to get back ./u-boot.dtb, > so I'm posting this patch. > > To avoid a conflict with other patches, > this patch is rebased on > "Follow-up for Kbuild series: more misc targets and short logs" series. > (And using Kbuild style to display short log) > > BTW, another question hit me when I was writing this patch. > Please let me ask you a little more questions. > > I guess the reason why you want device tree at the top directory > is Sandbox. Is this right? > If so, I am 100% convinced and I'd like to suggest to modify > > ALL-$(CONFIG_OF_SEPARATE) += u-boot.dtb u-boot-dtb.bin > > to > > ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.bin > ALL-$(CONFIG_OF_HOSTFILE) += u-boot.dtb > > Is this better? > For CONFIG_OF_SEPARATE, I think there is no opportunity to use u-boot.dtb > because we have u-boot-dtb.bin. Well some build systems may take the u-boot.dtb and package it up with U-Boot in a different way. Also they may look inside this file to find out things about the board they are targeting. For example, you might imagine a flash program which gets flash programming parameters from this file so it knows how to flash the board. I don't consider something in the dts/ directory to be a build product really. I suspect one day we might support multiple .dtb files in U-Boot and select between them based on a setting or a hardware feature, and in that case perhaps everything will be put in a FIT, but we are not there yet. But for now I see the .dtb file as a first-class build product just like the main U-Boot binary. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
