On Tue, Jun 10, 2014 at 02:59:23PM +0900, Masahiro Yamada wrote: > Hi Simon, > > > On Mon, 2 Jun 2014 22:04:50 -0600 > Simon Glass <s...@chromium.org> wrote: > > > In some cases, an externally-built device tree binary is required to be > > attached to U-Boot. An example is when using image signing, since in that > > case the .dtb file must include the public keys. > > I do not want to expand this argument, but > I am not sure if DTB stands for "device tree binary". > > linux/Documentation often refer it as "device tree blob", > while linux/Documentation/devicetree/booting-without-of.txt > says "device tree block". > > > > Add a DEV_TREE_BIN option to the Makefile, and update the documentation. > > Is it possible to rename it without mentioning _BIN or _BLOB ? > > For example, DTB_PATH=... or EXT_DTB=... > or some other variable name you like.
Yes. > > diff --git a/Makefile b/Makefile > > index ece622f..92819bf 100644 > > --- a/Makefile > > +++ b/Makefile > > @@ -867,7 +867,7 @@ MKIMAGEFLAGS_u-boot.kwb = -n > > $(srctree)/$(CONFIG_SYS_KWD_CONFIG:"%"=%) \ > > MKIMAGEFLAGS_u-boot.pbl = -n $(srctree)/$(CONFIG_SYS_FSL_PBL_RCW:"%"=%) \ > > -R $(srctree)/$(CONFIG_SYS_FSL_PBL_PBI:"%"=%) -T pblimage > > > > -u-boot.img u-boot.kwb u-boot.pbl: u-boot.bin FORCE > > +u-boot.img u-boot.kwb u-boot.pbl: u-boot$(if > > $(CONFIG_OF_SEPARATE),-dtb,).bin FORCE > > $(call if_changed,mkimage) > > The second comma in '(if $(CONFIG_OF_SEPARATE),-dtb,)' is redundant. > > > This is duplicating the same image as u-boot-dtb.img > > Your way is that "u-boot.img" includes DTB in some time and doesn't in the > other. > I am not sure which way is better. > But we don't need two rules to generate the equivalent image. > > If you go along with this change, I think it's OK with me. > Please consider removing below in that case: > > > ifeq ($(CONFIG_SPL_FRAMEWORK),y) > ALL-$(CONFIG_OF_SEPARATE) += u-boot-dtb.img > endif > > and > > u-boot-dtb.img: u-boot-dtb.bin FORCE > $(call if_changed,mkimage) ... as a follow up (I want to get this in already). Thanks! -- Tom
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