mkimage-profiles/features.in/arm-rpi4/image-scripts.d/98-bootstrap-boot-by-firmware
Anton Midyukov 937c073e2d arm-rpi4: Use /boot/efi as bootmountpoint
Also added download support on the Raspberry Pi 3.
The following feature has appeared. The FAT partition does not
install the last installed kernel, but the first kernel in the
KFLAVOURS list. This was done in order to enable  u-boot to
default load another kernel, for example std-def.
2020-07-16 02:28:58 +07:00

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#!/bin/sh -eu
kflavour=
kflavour="${GLOBAL_KFLAVOURS%% *}"
mkdir -p /boot/efi
uboots="rpi_3 rpi_3_32b rpi_4 rpi_4_32b"
for uboot in $uboots; do
[ -d /usr/share/u-boot/$uboot ] &&
cp -f /usr/share/u-boot/$uboot/* /boot/efi/
[ -f /boot/efi/kernel8.img ] &&
mv /boot/efi/{kernel8.img,uboot-$uboot.bin}
[ -f /boot/efi/kernel7.img ] &&
mv /boot/efi/{kernel7.img,uboot-$uboot.bin}
done
rm -f /boot/efi/config.txt
[ "$GLOBAL_ARCH" = aarch64 ] && \
echo "arm_64bit=1" > /boot/efi/config.txt
cat >> /boot/efi/config.txt <<EOF
enable_uart=1
disable_overscan=1
dtparam=audio=on
[pi3]
kernel=uboot-rpi_3.bin
dtoverlay=vc4-kms-v3d
[pi4]
kernel=uboot-rpi_4.bin
dtoverlay=vc4-fkms-v3d
[all]
EOF
[ "$GLOBAL_ARCH" = armh ] && \
sed -i 's/.bin/-32b.bin/g' /boot/efi/config.txt
# Enable bootloading without u-boot
sh -x rpi4-boot-nouboot $kflavour