d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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=$data_start iflag=skip_bytes |
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gzip -9 >> "$XIPIMAGE.tmp"
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# replace kernel binary
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mv -f "$XIPIMAGE.tmp" "$XIPIMAGE"
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