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#!/usr/bin/env bash
# helper script: download u-boot
#
# Copyright (C) 2014, 2015, 2016, 2020, 2021 Leah Rowe <info@minifree.org>
# Copyright (C) 2021 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e
# set this when you want to modify each u-boot tree
# for example, you want to test custom patches
# NODELETE= ./download coreboot
deleteblobs="true"
[ "x${NODELETE+set}" = 'xset' ] && deleteblobs="false"
# Error handling is extreme in this script.
# This script handles the internet, and Git. Both are inherently unreliable.
[[ -f build_error ]] && rm -f build_error
# Make sure that older revision are first as code uses that order to
# find the latest supported revision.
supported_uboot_revisions=" \
v2021.07 \
"
downloadfor() {
uboot_revision="v2021.07"
uboot_dir="u-boot/u-boot"
if [ -d "${uboot_dir}" ]; then
printf \
"REMARK: '%s' directory already exists. Skipping setup.\n" \
"${uboot_dir}"
return 0
fi
if [ ! -d "${uboot_dir}" ]; then
mkdir -p "${uboot_dir}"
fi
if [ ! -d "${uboot_dir}" ]; then
printf \
"ERROR: '%s' directory not created. Check file system permissions\n" \
"${uboot_dir}"
return 1
fi
if [ ! -d "${uboot_dir}/.git" ] && [ -d "${uboot_dir}" ]; then
rm -Rf "${uboot_dir}"
fi
if [ ! -d "${uboot_dir}" ]; then
printf "Download u-boot from upstream:\n"
git clone https://source.denx.de/u-boot/u-boot \
"${uboot_dir}" || \
rm -Rf "${uboot_dir}"
if [ ! -d "${uboot_dir}" ]; then
printf \
"ERROR: %s: Problem with git-clone. Network issue?\n" \
"download/u-boot"
return 1
fi
else
git -C "${uboot_dir}" pull || touch build_error
if [ -f build_error ]; then
printf \
"ERROR: %s: Problem with git-pull. Network issue?\n" \
"download/u-boot"
return 1
fi
fi
git -C "${uboot_dir}" reset --hard ${uboot_revision} || \
touch build_error
if [ -f build_error ]; then
printf \
"ERROR: %s: Unable to reset to commit ID/tag '%s' for board '%s' on tree '%s'\n" \
"download/u-boot" "${uboot_revision}" "${1}" "${uboot_dir}"
return 1
fi
}
strip_comments()
{
file="$1"
# Remove comments
sed 's/#.*//' "${file}" | \
# Remove lines composed of whitespaces only
sed '/^\W\+$/d' | \
# Remove empty lines
sed '/^$/d'
}
usage()
{
progname="./download u-boot"
printf "Usage:\n"
printf "\t%s # %s\n" \
"${progname}" \
"Download latest u-boot git revision and deblob it"
printf "\t%s [revision] # %s\n" \
"${progname}" \
"Download given u-boot git revision and deblob it"
printf "\t%s --blobs-list # %s\n" \
"${progname}" \
"Print the path of the blobs.list file for the latest supported u-boot revision"
printf "\t%s --blobs-list [revision] # %s\n" \
"${progname}" \
"Print the path of the blobs.list file for the given u-boot revision"
printf "\t%s --list-revisions # %s\n" \
"${progname}" \
"List supported u-boot revisions"
printf "\t%s --help # %s\n" \
"${progname}" \
"Prints this help"
}
download_uboot_revision()
{
git_revision="$1"
printf "Downloading u-boot "
printf "and (if exist in build system) applying patches\n"
downloadfor "${git_revision}"
rm -f "build_error"
printf "\n\n"
if [ "${deleteblobs}" = "true" ]; then
blobslist="resources/u-boot/default/blobs.list"
for blob_path in $(strip_comments "${blobslist}"); do
if echo "${blob_path}" | \
grep '/$' 2>&1 >/dev/null ; then
printf "Deleting blob directory: '%s/%s'\n" \
"${uboot_dir}" "${blob_path}"
rm -rf "${uboot_dir}/${blob_path}"
else
printf "Deleting blob file: '%s/%s'\n" \
"${uboot_dir}" "${blob_path}"
rm -f "${uboot_dir}/${blob_path}"
fi
done
fi
}
print_blobs_list_path()
{
printf "resources/u-boot/default/blobs.list\n"
}
if [ $# -eq 0 ] ; then
latest_revision="$(echo ${supported_uboot_revisions} | tail -n1)"
download_uboot_revision "${latest_revision}"
exit 0
elif [ $# -eq 1 -a "$1" == "--help" ] ; then
usage
exit 0
elif [ $# -eq 1 -a "$1" == "--list-revisions" ] ; then
for revision in ${supported_uboot_revisions} ; do
printf "${revision}\n"
done
exit 0
elif [ $# -eq 1 -a "$1" == "--blobs-list" ] ; then
latest_revision="$(echo ${supported_uboot_revisions} | tail -n1)"
print_blobs_list_path "${latest_revision}"
exit 0
elif [ $# -eq 2 -a "$1" == "--blobs-list" ] ; then
found=0
for revision in ${supported_uboot_revisions} ; do
if [ "${revision}" = "$2" ] ; then
print_blobs_list_path "$2"
exit 0
fi
done
printf "Error: Revision '${1}' is not supported\n"
exit 1
elif [ $# -eq 1 ] ; then
found=0
for revision in ${supported_uboot_revisions} ; do
if [ "${revision}" = "$1" ] ; then
download_uboot_revision "$1"
exit 0
fi
done
printf "Error: Revision '${1}' is not supported\n"
exit 1
fi
exit 0
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