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#
# Copyright OpenEmbedded Contributors
#
# SPDX-License-Identifier: MIT
#
# fitImage kernel compression algorithm
FIT_KERNEL_COMP_ALG ?= "gzip"
FIT_KERNEL_COMP_ALG_EXTENSION ?= ".gz"
# Kernel image type passed to mkimage (i.e. kernel kernel_noload...)
UBOOT_MKIMAGE_KERNEL_TYPE ?= "kernel"
uboot_prep_kimage() {
output_dir=$1
# For backward compatibility with kernel-fitimage.bbclass and kernel-uboot.bbclass
# support calling without parameter as well
if [ -z "$output_dir" ]; then
output_dir='.'
fi
linux_bin=$output_dir/linux.bin
if [ -e "arch/${ARCH}/boot/compressed/vmlinux" ]; then
vmlinux_path="arch/${ARCH}/boot/compressed/vmlinux"
linux_suffix=""
linux_comp="none"
elif [ -e "arch/${ARCH}/boot/vmlinuz.bin" ]; then
rm -f "$linux_bin"
cp -l "arch/${ARCH}/boot/vmlinuz.bin" "$linux_bin"
vmlinux_path=""
linux_suffix=""
linux_comp="none"
else
vmlinux_path="vmlinux"
# Use vmlinux.initramfs for $linux_bin when INITRAMFS_IMAGE_BUNDLE set
# As per the implementation in kernel.bbclass.
# See do_bundle_initramfs function
if [ "${INITRAMFS_IMAGE_BUNDLE}" = "1" ] && [ -e vmlinux.initramfs ]; then
vmlinux_path="vmlinux.initramfs"
fi
linux_suffix="${FIT_KERNEL_COMP_ALG_EXTENSION}"
linux_comp="${FIT_KERNEL_COMP_ALG}"
fi
[ -n "$vmlinux_path" ] && ${KERNEL_OBJCOPY} -O binary -R .note -R .comment -S "$vmlinux_path" "$linux_bin"
if [ "$linux_comp" != "none" ] ; then
if [ "$linux_comp" = "gzip" ] ; then
gzip -9 "$linux_bin"
elif [ "$linux_comp" = "lzo" ] ; then
lzop -9 "$linux_bin"
elif [ "$linux_comp" = "lzma" ] ; then
xz --format=lzma -f -6 "$linux_bin"
fi
mv -f "$linux_bin$linux_suffix" "$linux_bin"
fi
printf "$linux_comp" > "$output_dir/linux_comp"
}
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