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board/versal/post-image.sh: add custom hardware support

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By switching to the LINUX_DTBS variable, the post-image.sh script can now
work regardless of whether a user is using BR2_LINUX_KERNEL_INTREE_DTS_NAME
or the BR2_LINUX_KERNEL_CUSTOM_DTS_DIR for custom hardware. This simplifies
the transition users will make when migrating from a versal evaluation board
to a versal custom platform.

To keep the example post-image script as simple as possible, it assumes that
the first DTB in the LINUX_DTBS list is the one for creating the system.dtb
filename that u-boot will use for booting. Users are free to implement their
own post-image scripts for use cases with multiple DTBs.

Signed-off-by: Neal Frager <neal.frager@amd.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
This commit is contained in:
Neal Frager
2026-03-15 15:43:42 +00:00
committed by Arnout Vandecappelle
parent 8697b99a2e
commit 8caac27d69
1 changed files with 3 additions and 7 deletions
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10
board/versal/post-image.sh
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@@ -2,13 +2,9 @@
# By default U-Boot loads DTB from a file named "system.dtb", so
# let's use a symlink with that name that points to the *first*
# devicetree listed in the config.
FIRST_DT=$(sed -nr \
-e 's|^BR2_LINUX_KERNEL_INTREE_DTS_NAME="(xilinx/)?([-_/[:alnum:]\\.]*).*"$|\2|p' \
"${BR2_CONFIG}")
[ -z "${FIRST_DT}" ] || ln -fs "${FIRST_DT}.dtb" "${BINARIES_DIR}/system.dtb"
# devicetree in the LINUX_DTBS list.
LINUX_DTBS="$(make --no-print-directory VARS=LINUX_DTBS printvars)"
ln -fs "$(basename "${LINUX_DTBS%% *}")" "${BINARIES_DIR}/system.dtb"
BOARD_DIR="$(dirname "$0")"