70 lines
2.0 KiB
Bash
Executable File
70 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (C) 2015, 2017 Red Hat Inc.
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# Author(s): Dennis Gilmore <dennis@ausil.us>
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# Merlin Mathesius <mmathesi@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version. See http://www.gnu.org/copyleft/gpl.html for
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# the full text of the license.
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# is the system a calxeda one
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is_calxeda() {
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grep -Eq '^Hardware[^ ]* (Highbank|Midway)' /proc/cpuinfo
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}
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# update /etc/sysconfig/uboot to reflect if the platform provides its own dtb and
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# we do not need to pass anything.
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update_sysconfig() {
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sed -i -e 's/#SHIPSDTB=no/SHIPSDTB=yes/g' /etc/sysconfig/uboot
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}
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# insert into /boot/extlinux/extlinux.conf a fdtdir line
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insert_fdtdir() {
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# for every 'kernel' directive found, map it to an 'fdtdir' directive
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# referencing the dtb directory and add it after the 'append' directive
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sed -i \
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-e '/ fdtdir/d' \
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-e '/ kernel/{h;s/kernel/fdtdir/g;s/vmlinuz/dtb/g;x}' \
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-e '/ append/{p;x}' \
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/boot/extlinux/extlinux.conf
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}
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# check if there is a rescue image and copy the dtb files if there is
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copy_rescue_dtbs() {
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has_rescue=0
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for target in /boot/vmlinuz-0-rescue* ; do
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# if target exists, the glob matched a file
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if [ -e "$target" ] ; then
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has_rescue=1
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dtbdest=$(echo "$target" | sed -e 's/vmlinuz/dtb/g')
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fi
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break
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done
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for target in /boot/dtb* ; do
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# if target exists, the glob matched a file
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if [ -e "$target" ] ; then
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dtbsource="$target"
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fi
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break
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done
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if [ $has_rescue = 1 ] && [ ! -d "$dtbdest" ] ; then
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mkdir "$dtbdest"
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for dtb in $(ls "$dtbsource") ; do
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cp "$dtbsource/$dtb" "$dtbdest/$dtb"
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done
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fi
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}
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# platform ships its own dtb
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if is_calxeda
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then
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update_sysconfig
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else
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# need to add fdtdir to extlinux.conf
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insert_fdtdir
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copy_rescue_dtbs
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fi
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