On 11/12/2010 08:24 AM, Dirk Brandewie wrote:
>
> The second issue is being able to parse the section in the kernel image to
> find
> each of the blobs that have been concatenated together. If the DTB size is
> modulo 32 bytes I can use blob = blob+be32_to_cpu(blob->totalsize) to find
> the
> next blob in the section and use that address directly to have fdt.c parse
> the
> blob. Otherwise I would need to search for the signature of the next blob
> somewhere past the end of the current blob which is knid of messy IMHO.
>
Not if you know it is aligned mod <whatever> bytes, then you just do:
blob = ALIGN_UP(blob + be32_to_cpu(blob->totalsize), DTB_ALIGNMENT);
This, of course, makes it even more important that DTB_ALIGNMENT is a
common constant across the kernel build. The nice part is that you can
just add:
.balign DTB_ALIGNMENT
... into your generated .S files and all is good.
-hpa
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