#!/bin/bash

#  helper script: downloads coreboot and patches/deblobs it
#
#	Copyright (C) 2014, 2015 Francis Rowe <info@gluglug.org.uk>
#
#    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/>.
#

# This script assumes that the working directory is the
# root of libreboot_src or libreboot git.

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e

printf "Downloading coreboot, patching coreboot and deblobbing coreboot\n"

# This grabs current base used, and applies patches
# This is also used to run the deblob scripts.

# Remove the old version that may exist
# ------------------------------------------------------------------------------

rm -rf coreboot

# Get latest coreboot:
# ------------------------------------------------------------------------------

# download it using git
git clone http://review.coreboot.org/coreboot

# there are modifications required
cd coreboot/

# reset to previously tested revision
# git reset --hard e19c8b0091022ae3f490601aed0c290cd5171b79
# ^ currently, the first patch is downloaded using "checkout" so this automatically
# branches from the git revision that it was uploaded for. that would be 
# e19c8b0091022ae3f490601aed0c290cd5171b79

# Get patches from review.coreboot.org
# ------------------------------------------------------------------------------

# ----

printf "Downloading patches for T400 (hybrid graphics and other fixes)"
git fetch http://review.coreboot.org/coreboot refs/changes/31/9331/7 && git checkout FETCH_HEAD

# Downloads these patches:
# http://review.coreboot.org/#/c/9318/
# http://review.coreboot.org/#/c/9330/
# http://review.coreboot.org/#/c/9329/
# http://review.coreboot.org/#/c/9370/
# http://review.coreboot.org/#/c/9321/
# http://review.coreboot.org/#/c/9332/
# http://review.coreboot.org/#/c/9316
# http://review.coreboot.org/#/c/9317/
# http://review.coreboot.org/#/c/9319
# http://review.coreboot.org/#/c/9320/
# http://review.coreboot.org/#/c/9331/

# Related - hard-code enable integrated-only GPU (GM45):
git fetch http://review.coreboot.org/coreboot refs/changes/90/10090/2 && git cherry-pick FETCH_HEAD

# ----

printf "Text mode patch for X60 native graphics (main patch already merged in coreboot. See 6723 on coreboot gerrit)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/25/6725/3 && git cherry-pick FETCH_HEAD

printf "lenovo/x60: Enable legacy brightness controls (native graphics)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/48/7048/4 && git cherry-pick FETCH_HEAD

printf "Enable T60 native graphics\n"
git fetch http://review.coreboot.org/coreboot refs/changes/45/5345/9 && git cherry-pick FETCH_HEAD
printf "Enable text-mode graphics for T60\n"
git fetch http://review.coreboot.org/coreboot refs/changes/50/7050/2 && git cherry-pick FETCH_HEAD
printf "lenovo/t60: Enable legacy brightness controls (native graphics)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/51/7051/1 && git cherry-pick FETCH_HEAD

printf "ec/lenovo/h8: permanently enable wifi/trackpoint/touchpad/bluetooth/wwan\n"
git fetch http://review.coreboot.org/coreboot refs/changes/58/7058/7 && git cherry-pick FETCH_HEAD

printf "i945: permanently set tft_brightness to 0xff. this fixes the issue with X60 and 'scrolling' backlight\n"
# git fetch http://review.coreboot.org/coreboot refs/changes/61/7561/2 && git cherry-pick FETCH_HEAD
# The patch was accidentally merged in coreboot. See 
# http://review.coreboot.org/#/c/8697/ for the revert commit. rebase 7561 and re-include it in
# libreboot, once 8697 is merged in coreboot.

printf "northbridge/gm45/raminit.c: enable GS45 high-perf (i.e. add X200S support to libreboot)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/86/7786/1 && git cherry-pick FETCH_HEAD
printf "fix uneven backlight on X200 (when setting brightness low)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/79/7979/1 && git cherry-pick FETCH_HEAD

printf "ThinkPad R400 support (clone of the T400)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/93/8393/3 && git cherry-pick FETCH_HEAD
printf "ThinkPad T500 (depends on T400 patch)\n"
git fetch http://review.coreboot.org/coreboot refs/changes/81/9181/2 && git cherry-pick FETCH_HEAD

# Run coreboot-libre deblob scripts
# ------------------------------------------------------------------------------

printf "Deleting .git* in coreboot/ (history inside .git contains the blobs that were deleted)\n"
rm -rf .git
rm -f .gitreview
rm -f .gitmodules
rm -f .gitignore

cd ../

printf "Deblobbing coreboot\n"
./resources/utilities/coreboot-libre/deblob

printf "\n\n"

# ------------------- DONE ----------------------