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Add extlinux/extlinux.conf as U-Boot distro boot fallback

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The extlinux.conf provides a standard U-Boot distro boot configuration
that allows boards with U-Boot already flashed to SPI NOR to boot
without needing the boot.scr script. U-Boot scans for this file at
/extlinux/extlinux.conf during its distro boot sequence.

This is the fallback when U-Boot is already on SPI and the boot
partition provides the kernel/DTB/ramdisk for Android TV.

Copyright (C) 2026 Brendan Szymanski <hello@bscubed.dev>
This commit is contained in:
Brendan Szymanski 2026-07-11 15:36:14 -04:00
parent f1ecf8e92c
commit 248582c9e2
1 changed files with 8 additions and 0 deletions
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8
mkimg_gpt.sh
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@ -128,6 +128,14 @@ BOOT_MOUNT=$(mktemp -d)
sudo mount "/dev/mapper/${LOOPDEV}p1" "${BOOT_MOUNT}"
sudo cp ${KERNEL_PATH}/Image "${BOOT_MOUNT}/"
sudo cp ${KERNEL_PATH}/rk3588-orangepi-5-ultra.dtb "${BOOT_MOUNT}/"
sudo mkdir -p "${BOOT_MOUNT}/extlinux"
sudo tee "${BOOT_MOUNT}/extlinux/extlinux.conf" > /dev/null << 'EXTLINUX_EOF'
label Android TV
kernel /Image
fdt /rk3588-orangepi-5-ultra.dtb
initrd /ramdisk.img
append console=ttyS2,1500000 no_console_suspend root=/dev/ram0 rootwait androidboot.hardware=opi5ultra androidboot.selinux=permissive
EXTLINUX_EOF
sudo cp ${KERNEL_PATH}/boot.scr "${BOOT_MOUNT}/"
sudo cp ${KERNEL_PATH}/android-sdcard.dtbo "${BOOT_MOUNT}/"
sudo cp "${ANDROID_PRODUCT_OUT}/ramdisk.img" "${BOOT_MOUNT}/"