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While some platforms might choose to compress the kernel by default especially when boot medium is slow, others want uncompressed kernel. The choice of decompression speed vs. load speed is very platform dependent. Allow platform to choose the option here. (From OE-Core rev: 5c72105e2973e613b5c0f0e6310ffdea6e56c6c7) Signed-off-by: Sinan Kaya <okaya@kernel.org> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
31 lines
811 B
Plaintext
31 lines
811 B
Plaintext
# 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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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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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}" ] && ${OBJCOPY} -O binary -R .note -R .comment -S "${vmlinux_path}" linux.bin
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if [ "${linux_comp}" != "none" ] ; then
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gzip -9 linux.bin
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mv -f "linux.bin${linux_suffix}" linux.bin
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fi
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echo "${linux_comp}"
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}
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