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43a4d45f51
This helps in switching toolchains cleanly for kernel build between gcc and clang Currently, some kernels allow building with clang but not all the distro might use clang as default system compiler but kernel may demand gcc which is provided via KERNEL_* variables, however kernel does use OBJCOPY at places during build and it maybe set to use llvm objcopy when using clang. That should be a deliberate setting when clang is used for kernel as well, otherwise it should use binutils provided objcopy (From OE-Core rev: 17b409f2fd97894e0943d13c2cb0d52abde647e3) Signed-off-by: Khem Raj <raj.khem@gmail.com> Cc: Bruce Ashfield <bruce.ashfield@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
#
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# Copyright OpenEmbedded Contributors
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#
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# SPDX-License-Identifier: MIT
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#
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# fitImage kernel compression algorithm
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FIT_KERNEL_COMP_ALG ?= "gzip"
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FIT_KERNEL_COMP_ALG_EXTENSION ?= ".gz"
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# Kernel image type passed to mkimage (i.e. kernel kernel_noload...)
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UBOOT_MKIMAGE_KERNEL_TYPE ?= "kernel"
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uboot_prep_kimage() {
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if [ -e arch/${ARCH}/boot/compressed/vmlinux ]; then
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vmlinux_path="arch/${ARCH}/boot/compressed/vmlinux"
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linux_suffix=""
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linux_comp="none"
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elif [ -e arch/${ARCH}/boot/vmlinuz.bin ]; then
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rm -f linux.bin
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cp -l arch/${ARCH}/boot/vmlinuz.bin linux.bin
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vmlinux_path=""
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linux_suffix=""
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linux_comp="none"
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else
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vmlinux_path="vmlinux"
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# Use vmlinux.initramfs for linux.bin when INITRAMFS_IMAGE_BUNDLE set
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# As per the implementation in kernel.bbclass.
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# See do_bundle_initramfs function
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if [ "${INITRAMFS_IMAGE_BUNDLE}" = "1" ] && [ -e vmlinux.initramfs ]; then
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vmlinux_path="vmlinux.initramfs"
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fi
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linux_suffix="${FIT_KERNEL_COMP_ALG_EXTENSION}"
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linux_comp="${FIT_KERNEL_COMP_ALG}"
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fi
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[ -n "${vmlinux_path}" ] && ${KERNEL_OBJCOPY} -O binary -R .note -R .comment -S "${vmlinux_path}" linux.bin
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if [ "${linux_comp}" != "none" ] ; then
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if [ "${linux_comp}" = "gzip" ] ; then
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gzip -9 linux.bin
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elif [ "${linux_comp}" = "lzo" ] ; then
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lzop -9 linux.bin
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fi
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mv -f "linux.bin${linux_suffix}" linux.bin
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fi
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echo "${linux_comp}"
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}
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