[Buildroot] [PATCH 8/9] boards/zynq: rename the DTB to be loaded by U-Boot
Peter Korsgaard
peter at korsgaard.com
Mon Dec 11 21:37:48 UTC 2017
>>>>> "Luca" == Luca Ceresoli <luca at lucaceresoli.net> writes:
> We are about to introduce genimage support for the Zynq boards. For
> all of them U-Boot loads the DTB from a file named "devicetree.dtb" so
> we need to rename it on the SD card image.
> We could use genimage itself to rename files while creating the
> image. But this would require a different genimage.cfg for each board,
> leading to duplicate code.
> Instead let's create a "devicetree.dtb" symlink pointing to the dtb
> listed in the configuration. Currently all the Zynq-based boards have
> only one DTS configured, but if one had two or more of them, the
> symlink would point to the first one.
> Signed-off-by: Luca Ceresoli <luca at lucaceresoli.net>
> ---
> board/zynq/post-image.sh | 11 +++++++++++
> configs/zynq_microzed_defconfig | 1 +
> configs/zynq_zc706_defconfig | 1 +
> configs/zynq_zed_defconfig | 1 +
> 4 files changed, 14 insertions(+)
> create mode 100755 board/zynq/post-image.sh
> diff --git a/board/zynq/post-image.sh b/board/zynq/post-image.sh
> new file mode 100755
> index 000000000000..449f4a23725a
> --- /dev/null
> +++ b/board/zynq/post-image.sh
> @@ -0,0 +1,11 @@
> +#!/bin/sh
> +
> +# By default U-Boot loads DTB from a file named "devicetree.dtb", so
> +# let's use a symlink with that name that points to the *first*
> +# devicetree listed in the config.
> +
> +FIRST_DT=$(sed -n \
> + 's/^BR2_LINUX_KERNEL_INTREE_DTS_NAME="\([a-z0-9\-]*\).*"$/\1/p' \
> + ${BR2_CONFIG})
> +
> +ln -fs ${FIRST_DT}.dtb ${BINARIES_DIR}/devicetree.dtb
I've added a check for the empty string (E.G. in case you are not
building a kernel / using this option) and committed, thanks.
--
Bye, Peter Korsgaard
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