From b1d88b7bf088ea5e3544d891fd92396fa87aeb9f Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@araneo.si>
Date: Wed, 14 Jul 2021 21:17:39 +0200
Subject: [PATCH] device-kobo-clara: add init script to extract EPD waveform
 (MR 2334)

[ci:skip-build] already built successfully in CI
---
 device/testing/device-kobo-clara/APKBUILD     | 20 +++++++++++-----
 .../device-kobo-clara.post-install            |  3 +++
 .../device-kobo-clara/extract-waveform.initd  | 21 ++++++++++++++++
 .../device-kobo-clara/extract-waveform.pl     | 24 +++++++++++++++++++
 4 files changed, 62 insertions(+), 6 deletions(-)
 create mode 100644 device/testing/device-kobo-clara/device-kobo-clara.post-install
 create mode 100644 device/testing/device-kobo-clara/extract-waveform.initd
 create mode 100644 device/testing/device-kobo-clara/extract-waveform.pl

diff --git a/device/testing/device-kobo-clara/APKBUILD b/device/testing/device-kobo-clara/APKBUILD
index 66a615569..8de0cdf10 100644
--- a/device/testing/device-kobo-clara/APKBUILD
+++ b/device/testing/device-kobo-clara/APKBUILD
@@ -1,28 +1,32 @@
 # Reference: <https://postmarketos.org/devicepkg>
 pkgname=device-kobo-clara
 pkgdesc="Kobo Clara HD"
-pkgver=0.1
+pkgver=0.2
 pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
 arch="armv7"
 options="!check !archcheck"
 depends="
+	perl
 	postmarketos-base
 	u-boot-kobo-clara
 	u-boot-tools
 "
 makedepends="devicepkg-dev"
-source="
-	deviceinfo
-	uboot-script-downstream.cmd
-	uboot-script-mainline.cmd
-"
+install="$pkgname.post-install"
 subpackages="
 	$pkgname-kernel-downstream:kernel_downstream
 	$pkgname-kernel-mainline:kernel_mainline
 	$pkgname-nonfree-firmware:nonfree_firmware
 "
+source="
+	deviceinfo
+	extract-waveform.initd
+	extract-waveform.pl
+	uboot-script-downstream.cmd
+	uboot-script-mainline.cmd
+"
 
 build() {
 	devicepkg_build $startdir $pkgname
@@ -30,6 +34,8 @@ build() {
 
 package() {
 	devicepkg_package $startdir $pkgname
+	install -Dm755 "$srcdir"/extract-waveform.pl "$pkgdir"/usr/sbin/extract-waveform.pl
+	install -Dm755 "$srcdir"/extract-waveform.initd "$pkgdir"/etc/init.d/extract-waveform
 }
 
 kernel_downstream() {
@@ -60,6 +66,8 @@ nonfree_firmware() {
 
 sha512sums="
 8ff8c8a4a1cd274a060413423dea7767e06f4ab2bf539bcb1a084e2d4cb488115947e553e86e0c4a20287ca156ce167329a2c2c462a66094f1bec6ddccc07276  deviceinfo
+c68e4e41d73a1f9d08aeed95743d5a3ae6831d36d0259ba96ceca297479fef01b78c2b569c376c5b24b4ee24ea7d3cb44d6e97730f44d81fd67e9f0586c4911a  extract-waveform.initd
+34475b314e45135c84e4abdc769d3aba9df56e37814c7f689d5e1aca5af060b2e028c01e871c3863534fede0be7c79aaebe0a1ff4f2bfab2ee974489119005cf  extract-waveform.pl
 9f95496929f46de69afb6b25b1e3d099668e0f759eb1d36f76d84af14c8bd78cb739c410c58d7a31283782c6ff11999575c8c7ec22c11adec018b3026b290408  uboot-script-downstream.cmd
 5152e007591e07c4772ecbce4e212ae6c1b65264a46234c11c425f91439171a6379727e344a5c9654da368baa61b863660bf781e5e211d813532d29d8c2e7fd9  uboot-script-mainline.cmd
 "
diff --git a/device/testing/device-kobo-clara/device-kobo-clara.post-install b/device/testing/device-kobo-clara/device-kobo-clara.post-install
new file mode 100644
index 000000000..eef41e601
--- /dev/null
+++ b/device/testing/device-kobo-clara/device-kobo-clara.post-install
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+rc-update add extract-waveform default
diff --git a/device/testing/device-kobo-clara/extract-waveform.initd b/device/testing/device-kobo-clara/extract-waveform.initd
new file mode 100644
index 000000000..bfd46ced8
--- /dev/null
+++ b/device/testing/device-kobo-clara/extract-waveform.initd
@@ -0,0 +1,21 @@
+#!/sbin/openrc-run
+
+description="Extract EPD waveform blob to /lib/firmware"
+
+depend() {
+	after root
+}
+
+start()
+{
+	# Only run once
+	rm -f /etc/runlevels/*/$RC_SVCNAME
+
+	dir="/lib/firmware/imx/epdc"
+
+	ebegin "Copying EPD waveform to /lib/firmware..."
+	mkdir -p "$dir" && cd "$dir" \
+		&& extract-waveform.pl /dev/mmcblk0 epdc_PENG060D.fw \
+		&& ln -sf epdc_PENG060D.fw epdc.fw
+	eend $?
+}
diff --git a/device/testing/device-kobo-clara/extract-waveform.pl b/device/testing/device-kobo-clara/extract-waveform.pl
new file mode 100644
index 000000000..9d9e86dda
--- /dev/null
+++ b/device/testing/device-kobo-clara/extract-waveform.pl
@@ -0,0 +1,24 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0+
+# (c) 2020, Andreas Kemnade
+
+sub usage {
+	print "Usage: $0 disk epdc.fw\ndisk is the Kobo/Toline disk (image) containing a waveform\n";
+	exit(1);
+}
+
+&usage unless $#ARGV == 1;
+
+open IMGFILE, '<:raw', @ARGV[0] or die "cannot open @ARGV[0]";
+seek IMGFILE, 0x700000-16, 0;
+read IMGFILE, $magic, 8;
+(unpack("x0 H16", $magic) eq "fff5afff78563412") or die "invalid magic";
+
+seek IMGFILE, 0x700000-8, 0;
+read IMGFILE, $lengthbytes, 4;
+$length = unpack("x0 V", $lengthbytes) or die "invalid length";
+print $length . " bytes\n" ;
+seek IMGFILE, 0x700000, 0 or die "seek failed, file too short?";
+open OUTFILE, '>:raw', @ARGV[1] or die "cannot open @ARGV[1]";
+read IMGFILE, $waveform, $length;
+print OUTFILE $waveform;