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 -- Tim -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
