[PATCH] ARM: supply a DTB file to be appended

On Thu, Sep 8, 2011 at 12:14 PM, Linus Walleij
[off-list ref] wrote:

This makes it easy to script the kernel build with
different device trees, and it also vastly simplifies
building uImages since "make uImage" will now pick
up the devcie tree and include it in the final image
as part of the build process.

A clarification here on what it actually simplifies.

make zImage
cat my.dtb >> arch/arm/boot/zImage
make uImage

Does *not* work.

The reason is that when you issue "make uImage"
the zImage is overwritten due to changed timestamp.
Then a uImage without the DTB is created.

So currently to generate a uImage you have to
do something like:

make zImage
cat my.dtb >> arch/arm/boot/zImage
mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000
-n 'Linux-3.0' -d arch/arm/boot/zImage arch/arm/boot/uImage

The patch folds all of this into:

make uImage

Yours,
Linus Walleij