On Thu, Feb 29, 2024 at 11:38 AM Chen-Yu Tsai <wenst@xxxxxxxxxxxx> wrote: > > On Sun, Feb 25, 2024 at 4:21 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote: > > > > On Fri, Feb 23, 2024 at 6:23 PM Chen-Yu Tsai <wenst@xxxxxxxxxxxx> wrote: > > > > > > It is useful to have a list of all composite *.dtb files, along with > > > their individual components, generated from the current build. > > > > > > With this commit, 'make dtbs' creates arch/*/boot/dts/dtbs-components, > > > which lists the composite dtb files created in the current build. It > > > maintains the order of the dtb-y additions in Makefiles although the > > > order is not important for DTBs. > > > > > > This compliments the list of all *.dtb and *.dtbo files in dtbs-list, > > > which only includes the files directly added to dtb-y. > > > > > > For example, consider this case: > > > > > > foo-dtbs := foo_base.dtb foo_overlay.dtbo > > > dtb-y := bar.dtb foo.dtb > > > > > > In this example, the new list will include foo.dtb with foo_base.dtb and > > > foo_overlay.dtbo on the same line, but not bar.dtb. > > > > > > Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx> > > > --- > > > Hi, > > > > > > I hacked up this new thing to list out the individual components of each > > > composite dtb. I think this information would be useful for FIT image > > > generation or other toolchains to consume. For example, instead of > > > including each dtb, a toolchain could realize that some are put together > > > using others, and if the bootloader supports it, put together commands > > > to reassemble the end result from the original parts. > > > > > > This is based on and complements Masahiro-san's recent dtbs-list work. > > > > > > > > This is another format of my previous per-dtb "*.dtlst" > > (but I did not pick up 3/4, 4/4 because I did not know what we need after all). > > > > This should be discussed together with how Simon's script will look like. > > > > I can understand your Makefile code, but I still do not know > > how the entire overlay stuff will work in a big picture. > > How would you like to proceed? I can through together some changes on top > of Simon's patches as an initial proposal if that helps? > > I can use your format if you prefer. How would you select base+addonX among other base+addonY or base+addonZ configurations? -- Best Regards Masahiro Yamada
