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Denis 'GNUtoo' Carikli, 05/14/2019 02:24 PM
Porting Replicant to Android 9¶
- Table of contents
- Porting Replicant to Android 9
AOSP 9¶
Status with AOSP 9¶
- The Galaxy SIII 4G (i9305) boots (with graphics hacks) under AOSP9, without having to import nonfree libraries:
- The device boots until the lock screen
- The graphics work but are really slow as they have not been optimized
- Sometime the display content is corrupted
- The touchscreen works
- The kernel used is based on Linux 5.0-rc6 and has ~150 Android specific patches on top and some patches for the Galaxy SIII 4G (i9305) on top
Repositories and changes¶
- git://git.putti.eu/aosp/manifest_i9305.git
- git://git.putti.eu/aosp/kernel_i9305.git
- git://git.putti.eu/aosp/device_i9305.git
- git://git.putti.eu/aosp/external_mesa3d.git
- git://git.putti.eu/aosp/build_make.git
- git://git.putti.eu/aosp/core.git
Building AOSP version¶
Source code¶
First get the source code:
$ repo init -u git://git.putti.eu/aosp/manifest_i9305.git -b android-9.0.0
For Trisquel8
sudo apt-get install git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev libgl1-mesa-dev libxml2-utils xsltproc unzip bc python-mako
Building it¶
Once this is done, see the device/putti/i9305/README.md for the build instructions.
Trisquel 8 LXC¶
If you use Parabola, you may be interested in running Trisquel 8 in LXC.
To do that first debootstrap a Trisquel 8 rootfs.
Parabola's debootstrap does support Trisquel 8 and its manual has an example on how to do that:
$ man debootstrap [...] # debootstrap flidas flidas-root http://archive.trisquel.info/trisquel
Then you can use virt-manager to setup the LXC instance.
The advantages of this solution are that:- The LXC guest and host shares their resources (CPU, RAM) with almost no penalty
- Trisquel 8 is not a rolling release distribution
- you need to configure again the Trisquel 8 LXC instance (vimrc, sshd_config, etc)
- It's more complicated to setup
- The Android build system output a warning message about not being able to use namespaces which may become mandatory in newer Android versions
LineageOS 16¶
Status with LineageOS 16¶
For now the focus is on rebasing all the changes on top of LineageOS 16:- nothing is usable so far, nothing has been tested yet on real devices
- it can build images but it most probably contains proprietary software as it has not been removed yet
- the commits and the manifests are constantly rebased
Repositories and changes for LineageOS 16¶
- git://git.putti.eu/aosp/kernel_i9305.git
- git://git.putti.eu/aosp/external_mesa3d.git
- https://git.replicant.us/GNUtoo/android_build.git
- https://git.replicant.us/GNUtoo/device_i9305.git
- https://git.replicant.us/GNUtoo/manifest.git
- https://git.replicant.us/GNUtoo/vendor_replicant.git
Building LineageOS 16 version¶
Source code¶
$ repo init -u https://git.replicant.us/GNUtoo/manifest.git -b GNUtoo/replicant-9
The code is being rebased on top of the i9300 unofficial support for LineageOS
$ rm -rf .repo/manifests/ # This enables me to force push and rebase the manifest repository as well $ repo init -u https://git.replicant.us/GNUtoo/manifest.git -b GNUtoo/lineage-16.0_i9300 $ repo sync --force-sync
For Trisquel8
sudo apt-get install bc bison build-essential ccache curl flex g++-multilib gcc-multilib git gnupg gperf imagemagick lib32ncurses5-dev lib32readline-dev lib32z1-dev liblz4-tool libncurses5-dev libsdl1.2-dev libssl-dev libwxgtk3.0-dev libxml2 libxml2-utils lzop pngcrush rsync schedtool squashfs-tools xsltproc zip zlib1g-dev gcc-5-arm-linux-gnueabi
Launching the build¶
Follow the i9300 manifest instructions:
$ subject='/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com' $ mkdir .android-certs $ for x in releasekey platform shared media testkey; do \ ./development/tools/make_key .android-certs/$x "$subject"; \ done $ parallel_tasks=$(echo "$(grep 'processor' /proc/cpuinfo | wc -l ) + 1" | bc) $ source build/envsetup.sh $ lunch lineage_i9300-userdebug $ make -j${parallel_tasks} bacon
TODO¶
First month of full time equivalent work:
Time estimation | Task | Comments |
---|---|---|
DONE | |
Only boots with graphics, not much more |
|
|
Builds under Trisquel8 |
21h | * port the changes from AOSP9 to LineageOS 16 * cleanup the code * build the kernel from the Android build system * * |
|
14h | find, remove and document proprietary software in LineageOS 16 | |
21h | find, remove and document privacy issues in LineageOS 16 | |
7h | port the touch keys Linux driver | |
7h | upstream the AAT1290 flash led Linux |
Upstream has already a driver, only the device DTS seem to be lacking. Simon Shields commit doesn't have a signed-off-by. |
7h | rebrand LineageOS as Replicant | |
70h | port and cleanup the the Galaxy SIII (i9300) modem Linux driver from 4.16 to 5.0 | |
Total: 147h (~1 month) |
* port libsamsung-ril and libsamsung-ipc to Android 9 * Make the modem driver and libsamsung-ipc work together |
157h | libsamsung-ipc and samsung-ril were fixed to compile on Android 9. The code was not yet tested at runtime. It also probably still need to be adapted to trebble or the new RIL interfaces to be more substainable. |
Total | 157h | ~1 month |
---|
Task | Time estimation | Comments |
---|---|---|
|
|
Already done by the unofficial LineageOS port of the Galaxy SIII (i9300), needs testing |
add support for Audio with the upstream kernel driver | 70h | Might be way faster, depending on what Android 9 uses |
add partial (no modem) support for the |
14h | The work for the Galaxy SIII (i9300) has already been done by the unofficial LineageOS port. It needs to be adapted to the upstream kernel and not to use proprietary libraries. It also needs to be adapted to the Galaxy SIII 4G (i9305) |
Total | 154h | ~1 month |
Task | Time estimation | Comments |
---|---|---|
create a recovery | 21h | |
add internal WiFi support and validate the functionality | 6h | |
add external WiFi dongles support | 20h | External dongles support might be tricky |
|
|
|
Task | Time estimation | Comments |
---|---|---|
Estimate the amount of work to Reduce the attack surface | ? | |
Estimate the amount of work to add in-system upgrades | ? |
1 The generic instructions were tested at Install parties in Paris
Devices support:¶
Easy, because it's similar enough to the Galaxy SIII (I9300)¶
Galaxy Note II (N7100) | ||
---|---|---|
Task | Time estimation | Comments |
port the EA8061 LCD Linux driver | 35h | |
port the S6EVR02 LCD Linux driver | 35h | |
port the MAX77693 flash led Linux driver | 7h | |
android: add support for the Note II (N7100) and factorize the code with Galaxy SIII (i9300) and Galaxy SIII 4G (i9305) | 14h | Should be similar to the Galaxy SIII |
port the sensors libraries and other device specific libraries | 70h | It's difficult to evaluate how much time it could take |
add support for Audio with the upstream kernel driver | 14h | Should be similar to the Galaxy SIII |
Galaxy Note 8.0 (N5100) and 8.0 WiFi (N5110) | ||
---|---|---|
Task | Time estimation | Comments |
Evaluate the time required to do the port | 14h | TODO |
Needs more work and unknown upstream Linux status¶
Device | Time estimation | Comments |
---|---|---|
Galaxy S II (i9100) | Linux: devboard dts upstream? unknown status | |
Galaxy Note (N7000) | unknown Linux upstream status | |
Galaxy Nexus (I9250) | OMAP4, no dts upsrteam | |
Galaxy Tab 2 7.0 (P3100), 7.0 WiFi (P3110), 10.1 (P5100), 10.1 WiFi (P5110) | ||
GTA04 >= A4 | TODO: a RIL needs to be written, userspace GPS support is missing, audio scenarios, etc |
Documentation¶
Replicant 6.0 changes¶
Repository path | rebase worked | Changes |
---|---|---|
build | No | |
manifest | No | N/A |
bootable/recovery | Yes | * UI changes to improve usability * Branding * Small fix(es) |
external/boringssl | Yes | * Small fix(es) |
external/heimdall | No | |
frameworks/av | Yes | * Software rendering fix(es) |
frameworks/base | Yes | * WiFi fixe(s) for external dongles * Software rendering fix(es) * Privacy fix(es) * Security improvements * Usability improvements |
frameworks/native | No | |
hardware/broadcom/wlan | Yes | * Remove nonfree software |
hardware/libhardware | Yes | * Software rendering fix(es) |
hardware/libhardware_legacy | Yes | * Don't depend on nonfree software |
hardware/ti/omap4 | Yes | * Remove nonfree software * Don't depend on nonfree software * Small fix(es) |
libcore | Yes | * Small fix(es) |
packages/apps/Browser | Yes | * Privacy fix(es) * Branding * Small fix(es) |
packages/apps/LegacyCamera | Yes | * Software rendering fix(es) * Small fix(es) |
packages/apps/RepWifi | Not upstreamed, obsolete | N/A |
packages/apps/ReplicantWallpapers | Not upstreamed | * Branding |
packages/apps/Settings | No | |
packages/apps/SetupWizard | Yes | * Privacy fix(es) * Don't depend on nonfree software * Branding |
packages/apps/ThemeChooser | Yes | * Privacy fix(es) ? * Don't depend on nonfree software ? |
packages/providers/ContactsProvider | Yes | * Small fix(es) |
system/core | Yes | * Branding * various fixes |
vendor/replicant | No | |
vendor/cmsdk | Yes | * Branding |
external/chromium-webview | ? | ? |
external/drm_gralloc | Yes | * Software rendering fix(es) |
external/llvm | Yes | * Software rendering fix(es) |
external/mesa3d | Yes | * Software rendering fix(es) * Performance debugging for software rendering |
external/parameter-framework | Yes | * Small fix(es) |
external/protobuf | N/A | No changes |
prebuilts/ndk | ? | ? |
prebuilts/sdk | ? | ? |
sdk | Yes | * Small fix(es) |
toolchain/src/binutils | Yes | * Small fix(es) |
toolchain/src/gcc | No | |
toolchain/src/jack | Yes | * Small fix(es) |
toolchain/src/jill | Yes | * Small fix(es) |
kernel/samsung/smdk4412 | Yes | * Security fixes * Privacy Fixes (TrustZone) * Don't depend on nonfree software * Remove nonfree software * Small fix(es) |
kernel/samsung/tuna | ||
kernel/samsung/espresso10 | ||
device/samsung/i9100 | No | * Replace nonfree software by free software * free software sensors implementation(s) * free software modem audio implementation(s) * Software rendering fix(es) * Privacy Fixes (TrustZone) * Don't depend on nonfree software * Remove nonfree software * Branding * Small fix(es) |
device/samsung/n7000 | Yes | |
device/samsung/i9300 | No | |
device/samsung/i9305 | No | |
device/samsung/n7100 | Yes | |
device/samsung/n5100 | Yes | |
device/samsung/n5110 | Yes | |
device/samsung/maguro | Yes | |
device/samsung/tuna | Yes | |
device/samsung/espressowifi | Yes | |
device/samsung/espresso3g | Yes | |
device/samsung/galaxys2-common | Yes | |
device/samsung/smdk4412-common | No | |
device/samsung/kona-common | Yes | |
hardware/ril/samsung-ril | Not upstreamed | N/A |
external/libsamsung-ipc | Not upstreamed | N/A |
hardware/tinyalsa-audio | Not upstreamed? | N/A |
CustomROMs i9300 components¶
Repository | Tree path | Dependencies | Function |
---|---|---|---|
https://github.com/CustomROMs/android_hardware_samsung lineage-16.0 branch |
hardware/samsung/macloader | Loads the MAC Address of the WiFi network interface | |
hardware/samsung/wifiloader | Loads the wifi kernel module (like modprobe) and setup firmware filesystems permissions |
Links¶
Updated by Denis 'GNUtoo' Carikli over 5 years ago · 129 revisions