* linux-samsung-p4wifi: Use libressl-dev
* linux-samsung-p4wifi: Update to kernel based on mainline tegra_defconfig
Previously it was based on the config from a mainline-ish kernel for
Android. The remaining Android specific patches have been dropped.
It is now mainline with out-of-tree drivers and corresponding hardware
specific patches/fixes/hacks.
- depend on the firmware-lg-hammerhead-modem and
firmware-lg-hammerhead-adsp
- depend on the modem-qcom-msm-mainline-common
Currently adsp firmware is not used actually given upstream kernel
doesn't have support for adsp/sound subsystem. But it will be used
eventually.
Changes:
* device-samsung-klte with both downstream and mainline kernel
subpackages
* linux-postmarketos-qcom updated to last commit
What works in mainline kernel:
* internal SD card
* volume and home key buttons
* usb network
Add modem-qcom-msm-downstream-common package that pulls in the
dependencies.
qcom_rmtfs now has udev rules to find the storage partitions. My hope
is they can be written flexibly enough to cover all devices and kernel
flavors.
Guide for connecting to wlan is on the wiki page for the device, wifi
chip is BCM4334. Wlan interfaces are wlan0 and p2p0. Connection seems
stable, was able to install some packages.
* Add initial device support for Xiaomi Redmi Note 4 (xiaomi-mido)
* Update APKBUILD
* Update APKBUILD
* Wifi support for Xiaomi Redmi Note 4
* Update APKBUILD
* Download firmware from different repo for Xiaomi Redmi Note 4
* Split up cat line
The `msm-fb-refresher` updates the screen for msm based devices. It is
not needed for all devices, so we had some extra code in the initramfs,
that would only add it when the `deviceinfo_msm_refresher` variable was
set. However, we are able now to add files to initramfs hooks, so this
hack can be removed and simplify everything.
Changes:
* Remove `deviceinfo_msm_refresher` from all deviceinfos
* Add sanity check for it
* Move all `deviceinfo` sanity checks to an extra function
* `postmarketos-mkinitfs`: remove code for msm refresher
* `msm-fb-refresher`: add initramfs hook
* firmware-samsung-i9195: new wlan subpackage
* samsung-i9195: add wlan firmware to nonfree-firmware dependencies
* firmware-samsung-i9195: change pkgver to sequential numbering.
this breaks package management. be careful when updating this package.
the old version was `201707.1`, which is higher than `1.1.0`.
Previous post install action results in loading wlan module during
sysinit. This is not possible since wlan device is only exposed after
wcnss-wlan service. This also delays ssh startup for approximately 3
minutes.
Loading wlan module should only be done on default runlevel, after
wcnss-wlan service has been started.
Also add a reference fb.modes file, although directfb applications still
doesn't work and cause the framebuffer driver to crash.
- Currently just graphics along with weston tested
- Depend on firmware-adreno from device-lg-hammerhead
- Reduce dep of linux-firmware
- Just pull qcom, bracm and adreno firmware
* Progress can be followed in #1206
* Kernel boots with device tree from LineageOS and can
be installed by android recovery zip
* Networking comes up at boot but there's not display yet
* As discussed in IRC/matrix, we're removing `linux-postmarketos-lts`
for now. The kernel isn't used right now, and we save lots of
maintenance effort with not updating it every week or so.
* new config option `"kernel"` with possible values:
`"downstream", "mainline", "stable"` (downstream is always
`linux-$devicename`)
* ask for the kernel during `pmbootstrap init` if the device package
has kernel subpackages and install it in `_install.py`
* postmarketos-mkinitfs: display note instead of exit with error when
the `deviceinfo_dtb` file is missing (because we expect it to be
missing for downstream kernels)
* device-sony-amami:
* add kernel subpackages for downstream, mainline
* set `deviceinfo_dtb`
* device-qemu-amd64: add kernel subpackages for stable, lts, mainline
* test cases and test data for new functions
* test case that checks all aports for right usage of the feature:
* don't mix specifying kernels in depends *and* subpackages
* 1 kernel in depends is maximum
* kernel subpackages must have a valid name
* Test if devices packages reference at least one kernel
* Remove `_build_device_depends_note()` which informs the user that
`--ignore-depends` can be used with device packages to avoid building
the kernel. The idea was to make the transition easier after a change
we did months ago, and now the kernel doesn't always get built before
building the device package so it's not relevant anymore.
* pmb/chroot/other.py:
* Add autoinstall=True to kernel_flavors_installed(). When the flag
is set, the function makes sure that at least one kernel for the
device is installed.
* Remove kernel_flavor_autodetect() function, wherever it was used,
it has been replaced with kernel_flavors_installed()[0].
* pmb.helpers.frontend.py: remove code to install at least one kernel,
kernel_flavors_installed() takes care of that now.
* Specify a device tree binary file for p4wifi kernel
Previously the p4wifi kernel was using Android patches which append the
dtb to zImage in the kernel makefile.
Now follow mainline kernel convention of leaving the zImage and dtb
separate. Follow postmarketOS convention of specifying dtb file in
deviceinfo.
* Use linux-postmarketos-mainline APKBUILD build functions for p4wifi
* Update linux-samsung-p4wifi to kernel 4.16
- Use mainline broadcom bluetooth hci driver
- Use mainline atmel_mxt_ts driver
- Use mainline stmpe811 mfd driver and add stmpe811 ADC block
Note about PMOS_NO_SAFESTRAP kernel cmdline:
This can be used to forcefully skip SafeStrap partition mount in device
initramfs hook, for example when booting with droid4-kexecboot on device with
SafeStrap configured as well.
The kgsl 3d driver causes the device to boot loop, so disable this for
now.
The device boots ok after removing the kgsl driver, although continuing
boot from debug-shell via `pmos_continue_boot` does not work (seems to
be a bug in msm_fb driver). So, one has to reflash the boot partition
generated with no intfs debug shell to enjoy this improvement.
* [samsung-p4wifi] Include modules in kernel package
* [samsung-p4wifi] Load wifi modules at boot
* [samsung-p4wifi] Use mainline wm8994 sound driver
* [samsung-p4wifi] Add ALSA UCM config
Generated from xml2ucm tool.
* [samsung-p4wifi] Add headphone jack detect udev rules
* [samsung-p4wifi] Remove touchscreen calibration
It is not a resistive touchscreen. The default calibration works.
* Qualcomm MSM modem: 'rmtfs' support packages
* qcom_rmtfs: Server that talks to modem over IPC to allow it
read/write data for its persistent storage. This is needed for it to
boot, as well as periodically during usage. Added a patch that
it expects the storage path symlinks in /etc instead of /boot.
* qrtr: IPC library for rmtfs
* libqipcrtr4msmipc: adapter library to make qrtr work on kernels with
AF_MSM_IPC support. AF_QIPCRTR is the mainline equivalent since Linux
~4.7.
* msmipc-dev: Header files for qrtr and libqipcrtr4msmipc.
Thanks to Bjorn Andersson <https://github.com/andersson> for rmtfs and
qrtr.
* libsmdpkt_wrapper: adapter lib for QMI clients
The SMD serial packet driver in Qualcomm kernels has, AFAICT, a bug
in poll(); this works around it so that qmicli et al can work.
* i9195: firmware (modem only right now)
* add ofono (with patch for MSM devices)
Based on Alpine's package.
* i9195: add modem support
* move all modem related packages to aports/modem
* Add nonfree_firmware subpackage to all devices, that depend on
nonfree firmware.
* Some packages were depending on `linux-firmware`, but without having
Wifi working. Removed that dependency as it was probably added by
accident. If it was really necessary, chosing the appropriate
split linux-firmware package (e.g. linux-firmware-brcm) is better
anyway (that has been changed recently in Alpine and is possible
now).
* Add a test case that makes sure we don't have firmware depends
without subpackages in device aports anymore.
* device-*: add postmarketos-base to depends
* aportgen: add postmarketos-base to depends
* Add test case
* postmarketos-base: Don't depend on devicepkg
* msm-fb-refresher: Enable service in post-install
It lacked some hardware config, such as the USB switch.
With this change, I was able to SSH over the USB network.
I based this off of LineageOS 14.1's config file from its
build root. I think we were missing the secondary config
file
(TARGET_KERNEL_VARIANT_CONFIG := msm8930_serrano_eur_lte_defconfig
in BoardConfig.mk).
* gp-peak: Add support for osk-sdl
* gp-peak: Move non-kernel files to device-gp-peak
* gp-peak: Add audio support
Manually trigger the udev rules for audio devices and add the default user to the audio group
* Added a ui package for i3wm
* Added n900 specific i3wm config
* Fixed mixed tabs and spaces in i3status.
This is also the first commit made on an n900
running postmarketOS.
* Removed redundant X11
* Use lock.sh to lock the device
* Windows management improvements
* bump pkgver
* Fix device-nokia-n900 checksums
* Fixed path in the i3wm split package
Binary packages are rebuilding. If your kernel is not rebuilt yet, and
you don't want to build it yourself, just checkout the previous
pmbootstrap commit.
This commit also changes the arch from the postmarketOS kernels from
"all" to the ones where we actually have a kernel config.
Fixes#1229.
Fixes#1227.
This also updates the hash in linux-postmarketos-mainline, because the
hash changed upstream (they updated their git version server-side?).
This port includes:
* Weston including touch and WiFi (using e.g. firmware-samsung-i9305) works.
* Touchscreen calibration for osk-sdl
* Sound configuration
* Udev rules for touch and pen, pen works!
* Automatically generate a calibration matrix for libinput
This takes the calibration matrix for wayland and divides the pixel
offsets by the device width/height.
* Bump pkgrels of devices using devicepkg-dev
This causes new packages to be generated, using the new devicepkg-dev
version.
The device is Xiaomi Redmi 1S, based on MSM8296 platform, with Qualcomm
Snapdragon 400. The kernel is from lineageOS (3.4.0). Some additional patches
are needed for successful compilation. The screen dimension is 720x1280.
The touchscreen device name is ft5x06_i2c. Use this name for udev
instead of hardcoded device path. Also add a workaround for red
screen weston by setting weston_pixman to 2
The screen doesn't refresh. Enabling msm-fb-refresher as suggested.
Add udev rule to indicate whether the device is in charging state.
Green led indicates that the device is charging, whereas red light
indicates that the device is discharging.
For prima wlan module to work, an initialization procedure is needed (
echo 1 > /dev/wcnss_wlan ), before loading the prima wlan module
(wlan.ko). Also build the prima wlan as module.
Xiaomi Redmi 1S is using pronto wlan module, which needs some firmware
to run. Add the required wifi firmware to enable the wifi interface.
Add an openrc service to load wlan module after wcnss_service is
initialized.
Current status:
- flashing only manually (intel phones have different bootimg format)
- usb networking works
- xorg works using fbdev
- packages needed for wayland are not available for x86
- touch works in xorg and osk-sdl
Add a blobtools option to the deviceinfo file for creating specific
blobs for the Asus TF101 tablet. This will make it easier to flash
afterwards with ADB.
- Removed the framebuffer configuration in the initramfs hook
- Added patch for fixing the framebuffer mode in the kernel source
- Cleanup linux-samsung-i9070 APKBUILD
Also added the watchdog-kick package:
Some devices (namely Nokia N9/950) use more than one watchdog, and
watchdog-kick package kicks all of /dev/watchdogs? every 10 seconds so
they don't reset the device
* Don't ask for the mesa driver when the Qemu arch is not the
native arch and always use swrast in that case
* qemu-vexpress: use LTS kernel
* qemu-aarch64: use drm-backend for weston
* Rename deviceinfo variable flash_methods to flash_method
* Update pmb.config.deviceinfo_attributes / add sanity check
* Add test case that parses all deviceinfo files
The RGB values were not calculated correctly. This patch was send to
me by cascaro and works great. All credits goes to him.
This also fixes the issue of Weston not automatically recognizing the
good pixman type without setting it in the deviceinfo file.
* Added redscreen kernel patch and xorg config
* Moved weston and x11 specific config to subpackage
* Removed deviceinfo_weston_pixman_type for hammerhead
* Added msm-fb-refresher to hammerhead
This adds a new deviceinfo 'flash_fastboot_max_size' used for
preventing fastboot from flashing a system partition that is too
large. Some devices do not support flashing over a certain size
(e.g. 500MB).
The mesa driver, which ends up in the installation image, needs to be known
before the installation is done (in other words: when running the qemu action,
it is to late as the image has already been generated). That's why one can
choose the Qemu mesa driver in `pmbootstrap init` now:
```
Device [qemu-amd64]:
Which mesa driver do you prefer for your Qemu device? Only select something other
than the default if you are having graphical problems (such as glitches).
Mesa driver (dri-swrast/dri-virtio) [dri-virtio]:
```
It is still possible to select `dri-swrast`, because `dri-virtio` may not work
in all cases, and that way we could easily debug it or experiment with other
mesa drivers (e.g. the "vmware" one, which is supported by mesa and Qemu).
Other changes:
* `pmbootstrap qemu` accepts a `--display` variable now, which passes the value
directly to `qemu`'s `display` option. It defaults to `sdl,gl=on` (@PureTryOut
reported that to work best with plasma mobile on his PC). `--display` and
`--spice` (which is still working) are mutually exclusive.
* Removed obsolete telnet port pass-through: We only use the debug telnet port
since osk-sdl has been merged.
* Add show-cursor to the Qemu command line, so it shows a cursor in X11
* Refactored the spice code (`command_spice` only returns the spice command,
because it has all necessary information already) and the spice port can be
specified on the commandline now (previously it was hardcoded in one place and
then always looked up from there).
* Start comments with capital letters.
* Keep the log on the screen a bit shorter (e.g. Qemu command is written to the
"pmbootstrap log" anyway, so there's no need to display it again).
* linux-postmarketos-stable: Adjust kernel configs
x86_64, armhf: enable as modules:
CONFIG_DRM_VIRTIO_GPU, CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_BALLOON
aarch64: all 3 options were already enabled as built-in (no change)
* Set '-vga virtio' for mesa-dri-virtio
* pmbootstrap init: Generate new port device- and linux-package
* adds `pmbootstrap aportgen device-*` and
`pmbootstrap aportgen linux-*`
* ask for confirmation when selecting a non-existing device
* generate the packages directly from init
* refactor aportgen code
* fixed some easy things in the linux- APKBUILD (more to come in
follow-up PRs!)
Testing:
* Test all questions to the user from pmb.config.init and pmb.aportgen.device
(except for the timezone question, because we would need to monkeypatch the
os.path.exists() function, which messes up pytest, so we'd need to refactor
the timezone function to be more testsuite friendly first)
* Run the device wizard in a testcase a few times and check the output, that
pmbootstrap.aportgen.device and pmbootstrap.aportgen.linux create by parsing
the resulting APKBUILDs and deviceinfo and checking its contents.
* Build the generated device package once in the same testcase
Thanks a lot to @drebrez for all the help with this one:
<https://github.com/postmarketOS/pmbootstrap/pull/821>
See also the updated porting guide:
<https://wiki.postmarketos.org/wiki/Porting_to_a_new_device>
This caused builds to fail with a modern GCC at least once, and while it originally was meant as
security feature by Qualcomm, "it is unsupported by Qualcomm, and opens up to a wide range
of potential attack surfaces that has not been audited by anyone."
* XFCE4/Hildon: Log to syslog, see also:
<https://github.com/postmarketOS/pmbootstrap/pull/762>
* Fix XFCE4 didn't start in qemu-amd64, because it required
libEGL.so.1, which is provided by mesa-egl. This is a dependency
of device-qemu-amd64-x11 now. (It worked for Hildon and Weston,
because they pull mesa-egl in with other packages.)
@drebrez deserves much credit for this one for all the testing,
bisecting and for fixing everything. Thank you very much!
---
* devices which need a custom weston.ini ship it with a install_if
subpackage, so it only gets installed when weston is installed. This
sounds complicated, but is actually pretty clean in the APKBUILD.
* postmarketos-ui-weston: has a weston.ini.default, which enables
xwayland and uses fbdev as backend (because that's what most
devices use!). It defaults to the weston.ini.default if there is no
weston.ini (as installed by the device package).
* changed spaces to tabs for consistency, general minor refactoring of
device-APKBUILDs
Placing such files in /tmp/ is an unnecessary attack vector, as
@pavelmachek showed. All udev rules, which mentioned /tmp/weston.log
do not contain any path anymore.
Logs can be read with:
logread -f /var/log/messages | grep weston
See also: <https://wiki.alpinelinux.org/wiki/Syslog>
* Rebase on 4.11.12 kernel upstream
I took the relevant patches from https://git.linaro.org/people/john.stultz/flo.git/log/?h=flo-v4.11 and
compiled with upstream kernel.org 4.11.12 kernel. 4.12rc1 and later have not fixed yet problems
with freedreno gpu hanging. So we now have an upstream source for the kernel and John Stultz
patches separately.
Set this to y as it does not seem to have problems in Alpine - CONFIG_HW_RANDOM_MSM=y
Enable USB OTG in kernel. I still need to find out how to enable it in Alpine.
* Use pkgver instead of hash and other changes
* Add dependencies for X11 and osk
Added pointercal. Added dependencies so Xfce would work out of the box. Made changes in
90-android-touch-dev.rules as they are needed for proper X11 touchscreen calibration.
* postmarketos-base: Execute setup-udev, remove mosh from dependencies
* Run setup-udev [0], because that is what `setup-xorg-base` does [1].
It configures more than one OpenRC service and it also messes with the
runlevels. Only after running that, Hildon works (tested in Qemu).
[0]: 2fbea8b8da/main/eudev/setup-udev
[1]: 06300dd483/setup-xorg-base.in (L25)
* Remove `mosh` from `postmarketos-base` dependencies. I don't think anyone
uses it right now, and it's easy to add custom packages in `pmbootstrap init`
nowadays.
* Minor style changes in the `APKBUILD`
* [rx51] Remove udev-trigger service start
* Package Broadcom Wi-Fi firmware from AOSP
This uses a mirror of AOSP's platform/hardware/broadcom/wlan repo at version
android-8.0.0_r12 (6c8ef5b600cec5d36a54a0276fe8c97b9ab8d6bb).
This is needed as Nexus 6P uses a BCM4358, and the blob available in Alpine's
linux-firmware package is old and vulnerable to Broadpwn. See #513.
* device: angler: enable Wi-Fi and graphics output
Changes:
- Set resolution on bootup
This is copied from the Nexus 5's init script.
- Add Wi-Fi calibration file and change firmware path
This is also based on the Nexus 5's implementation.
- Enable CONFIG_VT and NFS in the kernel
- Explicitly use identity touchscreen calibration
- Rename the touchscreen udev rules
- Enable msm-fb-refresher
For some reason the ofono rules don't always work for the N900's modem.
This picks out the relevant parts of that rule and seems to successfully
set up the modem device every time now.
* pmb.helpers.run: support running processes in background
* enable QXL driver support in the linux kernel configurations so
that we can also use SPICE to connect to the VM.
QXL is a paravirtual graphics driver with 2D support
The SPICE project aims to provide a complete open source solution for remote
access to virtual machines in a seamless way.
Both DRM_QXL and DRM_BOCHS are enabled as modules.
According to [1], on Linux guests, the qxl and bochs_drm kernel modules
must be loaded in order to gain a decent performance
* qemu: add new option --spice to connect to VM using a SPICE client
If specified, 'pmbootstrap qemu' will look for some SPICE client in the
user's PATH and run qemu using the QXL driver.
Currently supported spice clients are 'spicy' and 'remote-viewer' but
adding support for more clients can be easily done.
qemu with qxl support will run on port 8077/tcp, which doesn't belong to
any well-known service and represents 'PM' in decimal.
References:
[0] https://www.linux-kvm.org/page/SPICE
[1] https://wiki.archlinux.org/index.php/QEMU#qxl
[2] https://wiki.archlinux.org/index.php/QEMU#SPICE
[3] https://github.com/postmarketOS/pmbootstrap/issues/453 (partially fixed)
* firmware-asus-flo: packaged all flo firmware
* device-asus-flo: depend on firmware-asus-flo package
* default android wifi config
* Add wifi and freedreno support
* change to console=ttyMSM0 - as per https://dflund.se/~triad/krad/nexus7-flo/
* Add current kernel config as it is currently working with wifi.
* Increase pkgrel to account for changes in the kernel config.
Quite a few things use dbus (plasma, hildon, ofono, connman,
networkmanager, etc) that I think it makes sense to just have this
started by default in pmOS rather than have every device package
implement this on their own.
In case someone shows up with a use-case, where dbus by default
is not desired, please speak up. Possible solutions are in #628.
* Started with stock kernel config (fairphone-perf_defconfig)
* Enabled DEVTMPFS
* Deactivated MSM_KGSL
* Enabled the serial console
* Enabled USB networking
This adds a custom swap file service, which allows specifying a
recommended swap size in the deviceinfo file via
`deviceinfo_swap_size_recommended`. For the N900 this defaults
to 1024 MB now. As the swap file is created in the root partition,
we have encrypted swap now (unless encryption is disabled with
`--no-fde`).
This is a workaround for #429, until the iteration count can be
specified directly in cryptsetup.
* Add default iter-time option, and option to override
* set SHA1 default hash for luksFormat, add option to override
* [RX51] load omap-sham in initramfs for HW accel. sha1
* Add LG G Watch (dory) support
* Use github.com mirror instead of googlesource.com to have fixed checksum
* Fix kernel compilation and remove unnecessary initfs-hook for framebuffer settings
* Check kernel config
* Allow specifying multiple kernel packages, and also no packages
which defaults to scanning all kernel configs (it is super fast
anyway)
* Add the check to Travis CI
* Adjust existing kernel configs, so they pass the kconfig_check.
(We've had to put in a lot of defaults in the aarch64
linux-postmarketos configs, that's why the diff is a bit unclean.)
* Increase modified kernel pkgrels
- Revert to LineageOS 14.1 kernel
- Enable virtual terminal
- Update touchscreen settings
At the moment, display output works, but only when the following is run:
while [ ! ]; do cat /sys/class/graphics/fb0/modes >
/sys/class/graphics/fb0/mode; done.
Adding INSTALL_MOD_STRIP will cause modules to be stripped after
they are installed (option --strip-debug will be used)
In case someone isn't happy with it, please open a PR that reverts
it for your device, or start a discussion as a new issue.
* No need to append DTB to kernel
* Remove kernel module build for now
* Add device-specific firmware package
* Add special partitions to fstab
* Fix typo in screen width
* Add maguro wifi support
* enable framebuffer and VT, WESTON STARTS
* make touchscreen work & fix merge conflict
Cherry-pick of lawl's commit, ed552e5d9272204c12f67bcb0401b3e08e57d35f.
* Initial Mozilla Flame packages
* Update dtbtool to use LineageOS upstream
* Use mkbootimg --dt flag only when deviceinfo_bootimg_qcdt is defined
* Update mkbootimg to use LineageOS upstream
* Add sparse image flashing on device-mozilla-flame
* Only support SD card install on Mozilla Flame
* Remove useless profile.sh on mozilla flame
* Package DTBs in /usr/lib/linux-mozilla-flame/
* Build and install modules in linux-mozilla-flame
Thanks to Pablo Castellano and Martijn Braam!
In postmarketOS we are now able to generate system images with the
correct configuration so that they can boot already using qemu
This commit brings the `pmbootstrap qemu` action.
This command is very handy because you don't have to set all the
qemu parameters, pmbootstrap does it for you.
* device-qemu-vexpress: Added kernel command line according to wiki
* qemu: Added workaround for image writing permissions
* qemu: Added support to launch postmarketOS in a QEMU virtual machine
- Support for emulating these architectures in QEMU: arm, aarch64, x86_84
- Generate QEMU command correctly depending no guest architecture (arm/x86)
- Run QEMU in the same architecture as the host by default
- Refactoring in pmb.parse.arch and pmb.qemu.run
- Raise exception if DTB file or system image are not present
- Display more useful information when something fails (e.g. image not found)
- Run qemu version depending on arch (host or argument), not device configured
* device-qemu-amd64: set deviceinfo_kernel_cmdline to "PMOS_NO_OUTPUT_REDIRECT"
* qemu: added --memory argument to specific guest RAM
* device-qemu-amd64: adjusted deviceinfo_kernel_cmdline (console=tty1)
* Added /etc/network/interfaces for qemu-amd64
* qemu: Added KVM support if /dev/kvm if present
* Specify separate machines for architecture
* qemu: Check if QEMU is installed instead of crashing
* Added graphics driver to qemu-aarch64
- Use arm (as used in qemu) instead of armhf (used in Alpine)
- qemu argument is -dtb
- Follow same style to build the command + arguments
* qemu: Added SSH port redirection: ./pmbootstrap.py qemu -p 2222
* Packaged libsparse
libsparse from the Android project provides multiple tools like img2simg
and simg2img.
These are used to split a large image for the system partition into
separate smaller chunks with sparse headers
This is required for several devices (at least bullhead, fp2 and titan)
because it fixes the "Invalid sparse file format at header magi" error
https://github.com/postmarketOS/pmbootstrap/issues/299
* Added new variable deviceinfo_flash_sparse (fixes#299)
Right after the system image is generated, pmbootstrap checks this
variable. In case it is true, run img2simg on it
* motorola-titan: enable deviceinfo_flash_sparse
* libsparse: use source from github: anestisb/android-simg2img
It is not that easy to use the upstream archive because everytime
you download it, the files have the current date as creation date
and that makes the file have a different checksum every download
https://github.com/postmarketOS/pmbootstrap/pull/303#issuecomment-319017197
