#!/bin/bash

# Copyright 2011, 2016, 2018, 2023  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Included in Slint and adapted by Didier Spaier didieratslintdotfr

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=kernel-firmware
PKGNAM2=amd-microcode
ARCH=noarch
BUILD=1slint
BUILD2=1slint
# Compress the firmware blobs?
# Default is "none" for no compression.
# Other types known to be currently supported are "xz" and "zstd".
COMPRESSION=xz
# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
TMP=$CWD
PKG=$TMP/package-$PKGNAM
PKG2=$TMP/package-amd-microcode
TMP2=$TMP/amd-microcode

rm -rf $PKG $PKG2 $TMP2
mkdir $TMP2 $PKG $PKG2

cd $PKG
git clone git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
# Better determine these the same way as above.
DATE="$(lynx -dump -width=256 https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=HEAD | grep "   committer " | head -n 1 | rev | cut -f 3 -d ' ' | rev | tr -d -)"
HEADISAT="$(lynx -dump -width=256 https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=HEAD | grep "    commit   " | head -n 1 | cut -f 2 -d ] | cut -b 1-7)"
find . -name ".git*" -exec rm -rf "{}" \+
chown -R root:root .
mkdir -p lib/firmware

# Added to build the package amd-microcode by Didier
# Note: I could add support for AMD Secure Encrypted Virtualization (AMD-SEV) as indicated in:
# https://documentation.suse.com/sles/15-SP1/html/SLES-amd-sev/index.html
# as implemented by Debian in the package amd64-microcode. But I am not ready for that :(
# Do as suggested by Gentoo in
# https://wiki.gentoo.org/wiki/Microcode#Manual_initramfs_creation_.28AMD.29
mkdir -p $TMP2/kernel/x86/microcode
mkdir -p $PKG2/boot
mkdir -p $PKG2/usr/doc/$PKGNAM2-${DATE}_${HEADISAT}
mkdir -p $PKG2/install
cd $TMP2
mkdir -p kernel/x86/microcode
cat $PKG/linux-firmware/amd-ucode/microcode_amd*.bin > kernel/x86/microcode/AuthenticAMD.bin
echo kernel/x86/microcode/AuthenticAMD.bin | bsdcpio -o -H newc -R 0:0 > $PKG2/boot/amd-ucode.img
for FILE in LICENSE.amd-ucode amd-ucode/README; do
	cp $PKG/linux-firmware/$FILE $PKG2/usr/doc/$PKGNAM2-${DATE}_${HEADISAT}/ || exit
done
cp $CWD/slack-desc.amd-microcode $PKG2/install/slack-desc
cd $PKG2
/sbin/makepkg -l y -c n $TMP/$PKGNAM2-${DATE}_${HEADISAT}-$ARCH-$BUILD2.txz
echo "/sbin/makepkg -l y -c n $TMP/$PKGNAM2-${DATE}_${HEADISAT}-$ARCH-$BUILD2.txz"

echo "now, check"
read -r

cd $PKG
# Install the firmware from the download directory using "make $INSTALLTARGET":
case $COMPRESSION in
  xz) INSTALLTARGET="install-xz" ;;
  zstd) INSTALLTARGET="install-zst" ;;
  *) INSTALLTARGET="install" ;;
esac
( cd linux-firmware
  echo "Running make DESTDIR=$PKG ${INSTALLTARGET}..."
  make DESTDIR=$PKG $INSTALLTARGET 2> /dev/null
)

# Install documentation:
( cd linux-firmware
  mkdir -p $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}
  cp -a README.md $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/README.linux-firmware
  cp -a WHENCE $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/WHENCE.linux-firmware
  cp -a GPL* LICEN* \
    $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}
  cp -a amd-ucode/README $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/README.amd-ucode
  cp -a isci/README $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/README.isci
  cp -a carl9170fw/COPYRIGHT $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/COPYRIGHT.carl9170fw
  cp -a carl9170fw/README $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/README.carl9170fw
  cp -a rtw88/README $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}/README.rtw88
  cp -a wfx/LICENCE.wf200 $PKG/usr/doc/kernel-firmware-${DATE}_${HEADISAT}
)

pwd
echo "check the content of linux-firmware"
read -r
# Remove git repo clone:
rm -rf linux-firmware

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-${DATE}_${HEADISAT}-$ARCH-$BUILD.txz