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e4a42c82e9
Redefine GZIP, BZIP2, LZOP variables as KGZIP, KBZIP2, KLZOP resp.
GZIP, BZIP2, LZOP env variables are reserved by the tools. The original
attempt to redefine them internally doesn't work in makefiles/scripts
intercall scenarios, e.g., "make GZIP=gzip bindeb-pkg" and results in
broken builds. There can be other broken build commands because of this,
so the universal solution is to use non-reserved env variables for the
compression tools.
Fixes: 8dfb61dcba ("kbuild: add variables for compression tools")
Signed-off-by: Denis Efremov <efremov@linux.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
63 lines
1.6 KiB
Bash
Executable File
63 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0-only
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# XIP kernel .data segment compressor
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#
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# Created by: Nicolas Pitre, August 2017
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# Copyright: (C) 2017 Linaro Limited
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#
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# This script locates the start of the .data section in xipImage and
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# substitutes it with a compressed version. The needed offsets are obtained
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# from symbol addresses in vmlinux. It is expected that .data extends to
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# the end of xipImage.
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set -e
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VMLINUX="$1"
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XIPIMAGE="$2"
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DD="dd status=none"
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# Use "make V=1" to debug this script.
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case "$KBUILD_VERBOSE" in
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*1*)
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set -x
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;;
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esac
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sym_val() {
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# extract hex value for symbol in $1
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local val=$($NM "$VMLINUX" 2>/dev/null | sed -n "/ $1\$/{s/ .*$//p;q}")
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[ "$val" ] || { echo "can't find $1 in $VMLINUX" 1>&2; exit 1; }
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# convert from hex to decimal
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echo $((0x$val))
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}
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__data_loc=$(sym_val __data_loc)
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_edata_loc=$(sym_val _edata_loc)
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base_offset=$(sym_val _xiprom)
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# convert to file based offsets
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data_start=$(($__data_loc - $base_offset))
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data_end=$(($_edata_loc - $base_offset))
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# Make sure data occupies the last part of the file.
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file_end=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" "$XIPIMAGE")
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if [ "$file_end" != "$data_end" ]; then
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printf "end of xipImage doesn't match with _edata_loc (%#x vs %#x)\n" \
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$(($file_end + $base_offset)) $_edata_loc 1>&2
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exit 1;
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fi
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# be ready to clean up
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trap 'rm -f "$XIPIMAGE.tmp"; exit 1' 1 2 3
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# substitute the data section by a compressed version
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$DD if="$XIPIMAGE" count=$data_start iflag=count_bytes of="$XIPIMAGE.tmp"
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$DD if="$XIPIMAGE" skip=$data_start iflag=skip_bytes |
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$KGZIP -9 >> "$XIPIMAGE.tmp"
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# replace kernel binary
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mv -f "$XIPIMAGE.tmp" "$XIPIMAGE"
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