On 02/12/2015 06:56 PM, Tim Bird wrote: > > > On 02/12/2015 02:30 PM, K Richard Pixley wrote: >> On 2/12/15 14:01 , Tim Bird wrote: >>> On 02/12/2015 11:33 AM, K Richard Pixley wrote: >>>> I'm having trouble figuring out how to embed a dtb file into my kernel. >>>> I'm thinking that there should be a standard, architecture independent >>>> facility for this akin to initramfs, yes? >>>> >>>> Could someone please either point me to the standard facility, relevant >>>> doc, a currently building board that uses the standard facility, or >>>> outline what needs to be done to do this with a new board? >>>> >>>> If it matters, (I can't think why it would), I'm working with powerpc on >>>> a 3.10 kernel. But if there are better facilities in other versions I'd >>>> appreciate hearing about that too. >>> The normal method is just to cat the two files together, like so: >>> $ cat zImage <filename>.dtb > zImage_w_dtb >>> >>> See https://community.freescale.com/thread/315543 for one example, on ARM. >>> I'm not sure what the status is for appended DTBs on powerpc, but it's >>> easy enough you can just try it and see what happens. >>> -- Tim >> >> Thanks! >> >> How do I tell the kernel where to find that dtb? Is there a relevant >> config option? > > Usually you make the dtb from sources in the kernel. > I don't know how it works on powerpc, but on arm, the .dts > files are located in arch/arm/boot/dts, and you would make > the dtb for the corresponding "foo.dts" source > by typing: > $ make foo.dtb It's probably somewhere in: https://www.kernel.org/doc/Documentation/devicetree/booting-without-of.txt Rob -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
