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authorGravatar Luca Ceresoli <luca@lucaceresoli.net>2017-12-09 22:30:06 +0100
committerGravatar Peter Korsgaard <peter@korsgaard.com>2017-12-11 22:35:12 +0100
commit6465e4d34a4c1d94e73ec849297fc77b47b498a6 (patch)
tree01eab836cd676d14f3e6af5ce2bc7e0307f02c12 /board/zynq
parent7d1e2a893b09862548bf3394e0cbc76d58ebd84f (diff)
downloadbuildroot-6465e4d34a4c1d94e73ec849297fc77b47b498a6.tar.gz
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boards/zynq: rename the DTB to be loaded by U-Boot
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. [Peter: only create symlink if dtb option is available] Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'board/zynq')
-rwxr-xr-xboard/zynq/post-image.sh11
1 files changed, 11 insertions, 0 deletions
diff --git a/board/zynq/post-image.sh b/board/zynq/post-image.sh
new file mode 100755
index 0000000000..98b3306a80
--- /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' \
+ ${BR2_CONFIG})
+
+[ -z "${FIRST_DT}" ] || ln -fs ${FIRST_DT}.dtb ${BINARIES_DIR}/devicetree.dtb