Project

General

Profile

DeprecatedPortingToAndroid10 » History » Version 283

Denis 'GNUtoo' Carikli, 07/15/2020 10:43 AM
improve Allow system binaries for building rationale

1 264 dl lud
h1. Porting Replicant to Android 10
2 1 Denis 'GNUtoo' Carikli
3 101 Denis 'GNUtoo' Carikli
{{>toc}}
4 1 Denis 'GNUtoo' Carikli
5 266 dl lud
Active development has moved towards LineageOS 17 (based on Android 10).
6 1 Denis 'GNUtoo' Carikli
7 267 dl lud
The basic features working on Replicant 9 have been confirmed to work on Replicant 10, but not everything has been tested yet on either version. Replicant 9 source code and build instruction have been kept to do regression tracking: [[DeprecatedPortingToAndroid9|Porting Replicant to Android 9]].
8
9 266 dl lud
h2. Building Replicant 10
10 256 Denis 'GNUtoo' Carikli
11 266 dl lud
h3. Source code
12 256 Denis 'GNUtoo' Carikli
13
<pre>
14 277 dl lud
$ repo init -u https://git.replicant.us/replicant-next/manifest.git -b replicant-10-dev
15 256 Denis 'GNUtoo' Carikli
$ repo sync
16
</pre>
17
18
Alternatively a shallow copy of the source tree can be fetched in order to save on disk space:
19
20
<pre>
21 277 dl lud
$ repo init -u https://git.replicant.us/replicant-next/manifest.git -b replicant-10-dev --depth=1
22 256 Denis 'GNUtoo' Carikli
$ repo sync -c
23 1 Denis 'GNUtoo' Carikli
</pre>
24 256 Denis 'GNUtoo' Carikli
25 269 dl lud
To unshallow a specific module:
26 256 Denis 'GNUtoo' Carikli
27
<pre>
28
$ cd path/to/module
29 1 Denis 'GNUtoo' Carikli
$ git fetch --unshallow <remote>
30 256 Denis 'GNUtoo' Carikli
</pre>
31 1 Denis 'GNUtoo' Carikli
32 267 dl lud
h3. Build dependencies
33 256 Denis 'GNUtoo' Carikli
34 267 dl lud
h4. For Trisquel 8
35
36 256 Denis 'GNUtoo' Carikli
<pre>
37 1 Denis 'GNUtoo' Carikli
sudo apt-get install bc bison build-essential bsdmainutils ccache curl flex g++-multilib gcc-multilib gettext 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 python-mako pngcrush rsync schedtool squashfs-tools xsltproc zip zlib1g-dev
38 256 Denis 'GNUtoo' Carikli
sudo apt-get install gcc-5-arm-linux-gnueabi
39 1 Denis 'GNUtoo' Carikli
</pre>
40
41 267 dl lud
h3. Fixing the build environment
42 256 Denis 'GNUtoo' Carikli
43 274 dl lud
h4. Allow system binaries for building
44
45 283 Denis 'GNUtoo' Carikli
By default, the Android 10 build system can only use the prebuilt binaries it ships.
46 1 Denis 'GNUtoo' Carikli
47 283 Denis 'GNUtoo' Carikli
While having binary toolchains is better for reproducible builds, and that the binaries are free software, this creates a number of issues:
48
* We need to be able to rebuild the binaries, and so far no one did it yet.
49
* Binaries are way harder to trust than source code and not everyone trust Google.
50
51
As GNU/Linux distribution's tools can be rebuilt and are easier to trust, we are using that for now.
52
53
Setting the following envrionment variable allows to use your distribution tools:
54 274 dl lud
<pre>
55
$ export TEMPORARY_DISABLE_PATH_RESTRICTIONS=true
56 1 Denis 'GNUtoo' Carikli
</pre>
57
58 283 Denis 'GNUtoo' Carikli
Note that setting this variable does not automatically make the build system use only system binaries: if a prebuilt binary exist, it will use it, if not, it will use your system binary.
59
60
Lots of further effort must be put into transitioning to the system binaries and/or creating a scripts that would build all the required tools.
61
62
63 274 dl lud
64 273 dl lud
h4. Mako (Python) for Mesa
65 267 dl lud
66 260 Denis 'GNUtoo' Carikli
To avoid the following error:
67
<pre>
68
16:20:13 See https://android.googlesource.com/platform/build/+/master/Changes.md#PATH_Tools for more information.
69
[  3% 2585/70375] build out/target/product/i9305/gen/STATIC_LIBRARIES/libmesa_nir_intermediates/nir/nir_builder_opcodes.h
70
FAILED: out/target/product/i9305/gen/STATIC_LIBRARIES/libmesa_nir_intermediates/nir/nir_builder_opcodes.h
71
/bin/bash -c "python external/mesa3d/src/compiler/nir/nir_builder_opcodes_h.py external/mesa3d/src/compiler/nir/nir_opcodes.py > out/target/product/i9305/gen/STATIC_LIBRARIES/libmesa_nir_intermediates/nir/nir_builder_opcodes.h"
72
Traceback (most recent call last):
73
  File "external/mesa3d/src/compiler/nir/nir_builder_opcodes_h.py", line 106, in <module>
74
    from mako.template import Template
75
ImportError: No module named mako.template
76
16:20:20 ninja failed with: exit status 1
77
</pre>
78
79
You need to run the following command:
80 1 Denis 'GNUtoo' Carikli
<pre>
81
$ cd prebuilts/build-tools/path/linux-x86/
82
$ rm python && ln -s /usr/bin/python python
83 260 Denis 'GNUtoo' Carikli
</pre>
84
85 270 dl lud
h4. Java heap space
86
87
The Java heap size is automatically set according to the available system memory. On machines with 8 GB or less RAM, it is set to a value which is too low, and will result in the following error during the build:
88
89
<pre>
90
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
91
</pre>
92
93
The heap size can be "increased with an envirnoment variable":https://stackoverflow.com/a/60474592/1313087:
94
95
<pre>
96 278 dl lud
$ export _JAVA_OPTIONS="-Xmx3g"
97 270 dl lud
</pre>
98 1 Denis 'GNUtoo' Carikli
99 278 dl lud
h4. Reduce parallel jobs to avoid killed processes
100
101
Increasing the Java heap space is not enough to get a successful build on machines with 8 GB or less RAM. It is also necessary to reduce the number of parallel jobs, to avoid processes from being killed due to lack of memory. This typically happens during the build of @frameworks/base@ components.
102
103
For greater speed, you may let your build run with the defaults, wait for it to fail due to killed processes, and then relunch the build with:
104
105
<pre>
106 281 dl lud
$ make -j1
107 278 dl lud
</pre>
108
109
By default, "Ninja":https://ninja-build.org/manual.html, the underlaying build system for Android, used when you run @make bacon@, computes the number of parallel jobs according to the number of CPUs on your machine (typically #CPUs + 2 parallel jobs).
110
111
112 267 dl lud
h3. Launching the build
113
114 256 Denis 'GNUtoo' Carikli
<pre>
115 1 Denis 'GNUtoo' Carikli
$ source build/envsetup.sh
116
$ lunch lineage_i9305-eng
117 281 dl lud
$ make
118 256 Denis 'GNUtoo' Carikli
</pre>
119
120 266 dl lud
h3. Install the images
121 256 Denis 'GNUtoo' Carikli
122 282 dl lud
h4. From scratch
123
124 268 dl lud
<pre>
125 281 dl lud
$ cd out/target/product/i9305
126 271 dl lud
$ sudo heimdall flash --BOOT boot.img --USERDATA userdata.img --SYSTEM system.img 
127 282 dl lud
</pre>
128
129
h4. Update previous installation
130
131
<pre>
132
adb remount
133
adb sync
134 268 dl lud
</pre>
135 256 Denis 'GNUtoo' Carikli
136 266 dl lud
h3. Get adb
137 256 Denis 'GNUtoo' Carikli
138
As the device IDs are the ones given by the Linux kernel, they are not in the adb udev rules, so for now it requires to run adb as root:
139
<pre>
140
$ sudo adb shell
141
* daemon not running; starting now at tcp:5037
142
* daemon started successfully
143
i9305:/ #                                 
144 1 Denis 'GNUtoo' Carikli
$ sudo adb kill-server
145
$ adb shell
146
* daemon not running; starting now at tcp:5037
147
* daemon started successfully
148
error: no devices/emulators found
149
</pre>
150
So make sure to kill the adb-server and run it as root:
151
<pre>
152
$ adb kill-server
153
$ sudo adb shell
154
* daemon not running; starting now at tcp:5037
155
* daemon started successfully
156
i9305:/ # 
157 256 Denis 'GNUtoo' Carikli
</pre>
158
159 272 dl lud
h3. Boot progress
160
161
You can also follow the boot progress with adb:
162
<pre>
163
adb logcat
164
adb logcat -b main
165
</pre>
166
167
Note that the device can go into suspend at any time, so adb might be interrupted. That looks like that:
168
First you get a shell
169
<pre>
170
$ sudo adb shell
171
i9305:/ #
172
</pre>
173
174
Then the connection is interrupted:
175
<pre>
176
$ adb shell
177
i9305:/ # [randomdev@fullyfreelaptop ]$                                                                                                     
178
</pre>
179
180
The effect with adb logcat is similar.
181
182 269 dl lud
h3. Getting the latest changes
183
184
* The repositories are being constantly modified with @git push --force@ as we are trying things out, and don't want to make the commits history look too dirty, so be sure to backup your local changes.
185
* Sometimes the manifest repository is also modified with @git push --force@. In that case the following commands will loose all the work you did locally but will make the repository consistent with upstream repositories again:
186
<pre>
187 279 dl lud
$ rm -rf .repo/manifests .repo/manifests.git .repo/manifest.xml
188 277 dl lud
$ repo init -u https://git.replicant.us/replicant-next/manifest.git -b replicant-10-dev
189 269 dl lud
$ repo sync --force-sync
190
</pre>
191
* The following command might also be necessary to make the state consistent with upstream repositories again, when the manifest history wasn't rewritten, but it will also loose all the work you did locally: 
192
<pre>
193
$ repo sync --force-sync
194
</pre>
195 199 Kurtis Hanna
196 267 dl lud
h3. Build VM
197 199 Kurtis Hanna
198
If you use Parabola, you may be interested in running Trisquel 8 in LXC.
199
200
To do that first debootstrap a Trisquel 8 rootfs. 
201
202
Parabola's debootstrap does support Trisquel 8 and its manual has an example on how to do that:
203
<pre>
204
$ man debootstrap
205
[...]
206
# debootstrap flidas flidas-root http://archive.trisquel.info/trisquel
207 1 Denis 'GNUtoo' Carikli
</pre>
208
209 199 Kurtis Hanna
Then you can use virt-manager to setup the LXC instance.
210
211
The advantages of this solution are that:
212
* The LXC guest and host shares their resources (CPU, RAM) with almost no penalty
213
* Trisquel 8 is not a rolling release distribution
214
215 267 dl lud
The disadvantage of this solution are that:
216 199 Kurtis Hanna
* you need to configure the Trisquel 8 LXC instance (vimrc, sshd_config, etc)
217 267 dl lud
* It's more complicated to setup
218 1 Denis 'GNUtoo' Carikli
* The Android build system outputs a warning message about not being able to use namespaces which may become mandatory in newer Android versions
219 272 dl lud
220 278 dl lud
h2. Cleanups to be done
221 272 dl lud
222
* Make adb work as user by using the right USB IDs, and make userspace do the USB setup.
223
* -Make the kernel not use hardcoded CMDLINE_FORCE- Not possible unless the bootloader is changed or Linux is very heavily patched.
224
* Make the kernel not use hardcoded partitions if possible (though we use system as root)
225
* Make a clean Gatekeeper HAL module implementation instead of using the same hack than goldfish
226
* Look at "init.rc":https://android.googlesource.com/platform/system/core/+/master/init/README.md documentation to see if init.rc can be overriden clearly with the override statement to see if it's possible to keep the serial console patch for -eng
227 172 Joonas Kylmälä
228 153 Denis 'GNUtoo' Carikli
h2. Upstreaming status
229
230 261 Denis 'GNUtoo' Carikli
* The stock bootloader is incompatible with Linux, see [[BootloadersIncompatibleWithLinux#Devices-with-the-Exynos-4412]] for more information. So we maintain patches to enable the Galaxy SIII, and Galaxy Note II to boot with the stock bootloader. In the long run we need to look into using u-boot in the kernel partition as using u-boot instead of the stock bootloader currently require nonfree and non-redistributable software (BL1).
231
* For the patches that are not merged yet, see the "issues of the redmine upstreaming sub-project":https://redmine.replicant.us/projects/upstreaming/issues
232 153 Denis 'GNUtoo' Carikli
233 227 Denis 'GNUtoo' Carikli
h2. Modem status
234
235 228 Denis 'GNUtoo' Carikli
*libsamsung-ipc:* 
236
* Fully tested under GNU/Linux only
237 235 Denis 'GNUtoo' Carikli
* Can initialize completely the modem and receive messages (see the #1954 bug report for the logs)
238 228 Denis 'GNUtoo' Carikli
* Needs more cleanup but there is now a better abstraction
239 229 Denis 'GNUtoo' Carikli
240 228 Denis 'GNUtoo' Carikli
*libsamsung-ril:* 
241
* Ported to Replicant 9 using a wrapper for the API >=12 in libsamsung-ril source code that needs to be removed
242
* Tested under Replicant 9 without up to date libsamsung-ipc (no modem init)
243
* Tested and validated under Replicant 6 (doesn't break telephony)
244
245
h3. Modem status TODO
246
247 227 Denis 'GNUtoo' Carikli
* Implement the missing part to shut down the modem, close the interfaces and such, in order to need to reboot after each test.
248
* Continue to clean up the libsamsung-ipc and libsamsung-ril patches, test the patches in Replicant 6 when applicable, and merge them in the upstream repositories.
249
* Convert the firmware loading driver to the upstream API and then adapt libsamsung-ipc for that. This should also benefit other devices like the Galaxy SIII 4G, and the Galaxy Note II 4G which probably don't need much more to get their modem supported by upstream Linux.
250
* Cleanup and convert the rest of the drivers to look like the ones for the Nokia N900 and adapt the userspace in libsamsung-ipc, and merge libsamsung-ipc support for that once the kernel API is stable.
251
* Test the code under Replicant 9 when the graphics status will enable to have decent enough speed to do some testing through human interaction.
252
253 87 Denis 'GNUtoo' Carikli
h2. TODO
254 51 Denis 'GNUtoo' Carikli
255 74 Denis 'GNUtoo' Carikli
First month of full time equivalent work:
256 81 Denis 'GNUtoo' Carikli
257 127 Denis 'GNUtoo' Carikli
|_. Time estimation  |_.Task |_. Comments |
258
| DONE | -boot a device under AOSP9- | Only boots with graphics, not much more |
259
| -7h- DONE | -build it under a "FSDG compliant distribution":https://www.gnu.org/distros/free-distros.html like Trisquel8- | -WIP for AOSP, It's difficult to do precise time estimations as it could work out of the box or require one full time month of work depending on how much issues are encountered- 
260 59 Denis 'GNUtoo' Carikli
Builds under Trisquel8|
261 213 Denis 'GNUtoo' Carikli
| -21h- DONE | * -port the changes from AOSP9 to LineageOS 16-
262 155 Denis 'GNUtoo' Carikli
* -cleanup the code-
263 151 Joonas Kylmälä
* -build the kernel from the Android build system-
264 125 Denis 'GNUtoo' Carikli
* -make sure it builds with an FSDG compliant distribution-
265 143 Denis 'GNUtoo' Carikli
* -document the build procedure- |
266
Status:
267 155 Denis 'GNUtoo' Carikli
* Boots with adb.
268 143 Denis 'GNUtoo' Carikli
* Has ultra slow graphics |
269 127 Denis 'GNUtoo' Carikli
| 14h | find, remove and document proprietary software in LineageOS 16 | |
270
| 21h | find, remove and document privacy issues in LineageOS 16 | |
271 241 Denis 'GNUtoo' Carikli
| 7h | -Add support for the touch keys driver in the  galaxy-s3 dts- | "applied":https://lists.infradead.org/pipermail/linux-arm-kernel/2019-November/694100.html |
272 240 Denis 'GNUtoo' Carikli
| 7h | -upstream the AAT1290 flash led Linux dts for the galaxy-s3 boards- | "Now in 5.3":https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.3&id=4e4dfcb2a425cccc6dd1fb7d46e060cd57999afc |
273 127 Denis 'GNUtoo' Carikli
| 7h | rebrand LineageOS as Replicant | |
274 234 Denis 'GNUtoo' Carikli
| 70h | -port and- cleanup the the Galaxy SIII (i9300) "modem":https://github.com/fourkbomb/linux/tree/modem Linux driver from 4.16 to 5.0| See the [[PortingToAndroid9/#Modem-status|modem status]] for more details |
275 127 Denis 'GNUtoo' Carikli
|_\3. Total: 147h (~1 month) |
276 95 Denis 'GNUtoo' Carikli
277 1 Denis 'GNUtoo' Carikli
Second month of full time equivalent work:
278 216 Denis 'GNUtoo' Carikli
| * port  libsamsung-ril and libsamsung-ipc to Android 9
279 234 Denis 'GNUtoo' Carikli
* Make the modem driver and libsamsung-ipc work together | 157h | See the [[PortingToAndroid9/#Modem-status|modem status]] for more details |
280 1 Denis 'GNUtoo' Carikli
|_. Total |_. 157h | ~1 month |
281
282
Third month of full time equivalent work:
283
|_. Task |_. Time estimation |_. Comments |
284 213 Denis 'GNUtoo' Carikli
| -port the sensors libraries and other device specific libraries-
285
Look which sensor libraries can be used | 70h | Already done by the unofficial LineageOS port of the Galaxy SIII (i9300), needs testing |
286 255 Denis 'GNUtoo' Carikli
| add support for Audio with the upstream kernel driver | 70h | Might be way faster, depending on what Android 9 uses
287
                                                               See also "this bugreport":https://github.com/CustomROMs/android_local_manifests_i9300/issues/1 |
288 212 Denis 'GNUtoo' Carikli
| -add partial (no modem) support for the Galaxy SIII 4G (i9305) and- factorize the code with i9300 | 14h | * The source code on which the work was based changed from AOSP to an unofficial LineageOS port to a port of i9305 support for AOSP by Joonas to the official LineageOS so it's now supported by default
289
* The work to factorize the code between the i9300 and i9305 still need to be done |
290
 |
291 1 Denis 'GNUtoo' Carikli
|_. Total |_. 154h | ~1 month |
292 67 Denis 'GNUtoo' Carikli
293 71 Denis 'GNUtoo' Carikli
|_. Task |_. Time estimation |_. Comments |
294 96 Denis 'GNUtoo' Carikli
| create a recovery | 21h | |
295 74 Denis 'GNUtoo' Carikli
| add internal WiFi support and validate the functionality | 6h | |
296 71 Denis 'GNUtoo' Carikli
| add external WiFi dongles support | 20h | External dongles support might be tricky |
297 125 Denis 'GNUtoo' Carikli
| -create new- update the install and upgrade instructions | -35h- | -Our current install instructions don't scale as we have one copy for each device.-
298
-We also created generic instructions but they tend to be harder to follow[1] than the device specific ones.-
299
-This will be made in a modular format (for instance in LaTeX) that enables to generate per device install instructions without requiring to have multiples copy of the same text.-
300 214 Denis 'GNUtoo' Carikli
-The instructions will need to be able to be modified and compiled on an FSDG compliant distribution.-
301
Mostly done: 
302
* The installation instructions are now generic enough. 
303
* Some long standing TODO were also done along the way like adding backup instructions for the EFS.
304
* The current instructions are still for Replicant 6.0 and will need to be updated for Replicant 9.0 |
305 92 Denis 'GNUtoo' Carikli
306 71 Denis 'GNUtoo' Carikli
|_. Task |_. Time estimation |_. Comments |
307
| Estimate the amount of work to Reduce the attack surface | ? | |
308 1 Denis 'GNUtoo' Carikli
| Estimate the amount of work to add in-system upgrades | ? | |
309
310 82 Denis 'GNUtoo' Carikli
fn1. The generic instructions were tested at Install parties in Paris 
311 1 Denis 'GNUtoo' Carikli
312 85 Denis 'GNUtoo' Carikli
h3. Devices support:
313 1 Denis 'GNUtoo' Carikli
314 77 Denis 'GNUtoo' Carikli
h4. Easy, because it's similar enough to the Galaxy SIII (I9300)
315 97 Denis 'GNUtoo' Carikli
316
|_\3. Galaxy Note II (N7100) |
317 94 Denis 'GNUtoo' Carikli
|_. Task |_. Time estimation |_. Comments |
318 86 Denis 'GNUtoo' Carikli
| port the EA8061 LCD Linux driver | 35h | |
319
| port the S6EVR02 LCD Linux driver | 35h | |
320
| port the MAX77693 flash led Linux driver | 7h | |
321
| 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 |
322
| port the sensors libraries and other device specific libraries | 70h | It's difficult to evaluate how much time it could take |
323 125 Denis 'GNUtoo' Carikli
| add support for Audio with the upstream kernel driver | 14h | Should be similar to the Galaxy SIII |
324 86 Denis 'GNUtoo' Carikli
325 1 Denis 'GNUtoo' Carikli
|_\3. Galaxy Note 8.0 (N5100) and 8.0 WiFi (N5110) |
326 70 Denis 'GNUtoo' Carikli
|_. Task |_. Time estimation |_. Comments |
327
| Evaluate the time required to do the port | 14h | TODO |
328 69 Denis 'GNUtoo' Carikli
329 94 Denis 'GNUtoo' Carikli
h4. Needs more work and unknown upstream Linux status
330
331 54 Denis 'GNUtoo' Carikli
|_. Device |_. Time estimation |_. Comments |
332
| Galaxy S II (i9100) | | Linux: devboard dts upstream? unknown status |
333
| Galaxy Note (N7000) | | unknown Linux upstream status |
334 254 Jens Korte
| Galaxy Nexus (I9250) | |/2. OMAP4, no dts upstream |
335 34 Denis 'GNUtoo' Carikli
| Galaxy Tab 2 7.0 (P3100), 7.0 WiFi (P3110), 10.1 (P5100), 10.1 WiFi (P5110) | |
336 2 Denis 'GNUtoo' Carikli
| GTA04 >= A4 | | TODO: a RIL needs to be written, userspace GPS support is missing, audio scenarios, etc |
337 4 Denis 'GNUtoo' Carikli
338 128 Denis 'GNUtoo' Carikli
h2. Documentation
339 1 Denis 'GNUtoo' Carikli
340 128 Denis 'GNUtoo' Carikli
h3. Replicant 6.0 changes
341
342 252 Denis 'GNUtoo' Carikli
See [[Replican6Changes]].
343 128 Denis 'GNUtoo' Carikli
344 193 Denis 'GNUtoo' Carikli
h3. Other rebases
345
346 253 Denis 'GNUtoo' Carikli
See the [[Samsung-ipc]] page.
347 193 Denis 'GNUtoo' Carikli
348 217 Denis 'GNUtoo' Carikli
h2. Other attempts
349
350 218 Denis 'GNUtoo' Carikli
* It might be interesting to contact the people doing ports once we have something working well enough.
351
* It is also interesting to look at other attempts to understand if a given device is powerful enough to run Android 9 and what configuration was used to achieve it.
352
353 217 Denis 'GNUtoo' Carikli
|_. Device(s) |_. Repository |_. status |_. Comments |
354 238 Kurtis Hanna
| i9300 | "CustomROMs":https://github.com/CustomROMs/android_local_manifests_i9300 | * "March 3 2019 release":https://forum.xda-developers.com/galaxy-s3/development/rom-lineageos-16-0-t3875899 | |
355
| i9300 | "Team InFusion":https://github.com/team-infusion-developers/android_local_manifests_i9300 | * "August 20 2019 release":https://forum.xda-developers.com/galaxy-s3/development/rom-optimized-lineageos-16-0-team-t3940142 | Issues: * Uses a Samsung kernel
356
* Uses too many nonfree libraries
357 237 Kurtis Hanna
=> Probably nothing we could reuse from its code |
358
| N7100 | "ComicoTeam":https://github.com/ComicoTeam/android_device_samsung_n7100 | * "September 13 2019 release":https://forum.xda-developers.com/galaxy-note-2/development/rom-lineageos-16-0-20190112-comico-t3889281 | |
359 236 Kurtis Hanna
| I9100 | | "XDA":https://forum.xda-developers.com/galaxy-s2/development-derivatives/pie-i9100-t3850588 | |
360 217 Denis 'GNUtoo' Carikli
361 220 Denis 'GNUtoo' Carikli
h3. Links for other attempts
362
363
* https://www.xda-developers.com/android-pie-android-9-port-custom-roms/
364
365 128 Denis 'GNUtoo' Carikli
h3. CustomROMs i9300 components
366
367 131 Denis 'GNUtoo' Carikli
|_. Repository |_. Tree path |_. Dependencies |_. Function |_. Comments |
368
|/8. https://github.com/CustomROMs/android_hardware_samsung
369
lineage-16.0 branch | hardware/samsung/macloader | | Loads the MAC Address of the WiFi network interface | Might be useful |
370
| hardware/samsung/wifiloader | | Loads the wifi kernel module (like modprobe) and setup firmware filesystems permissions | May be useful |
371
| hardware/samsung/audio | | seems to contains ril related stuff as well | Look if the ril stuff is required, go for standard audio |
372
| hardware/samsung/lineagehw/hidl/livedisplay | | livedisplay is a feature similar to what redshift does on GNU/Linux | Not sure if it works with mainline |
373
| hardware/samsung/exynos/multimedia/utils/ | seem meant for audio/video decoding offload | assembly obtimized color conversion and resize code | check assembly code license, not sure if useful |
374
| all other directories in hardware/samsung/exynos/ | nonfree firmwares, nonfree software?, smdk kernel? | audio/video decoding offload | Avoid using that |
375
| hardware/samsung/exynos3 |/2. nonfree firmwares?, nonfree software?, smdk kernel? |/2. some light libraries, display stuff (gralloc, etc), 2D acceleration (FIMG), camera (FIMC), 3D acceleration, etc |/2. Avoid using that for now |
376 202 Kurtis Hanna
| hardware/samsung/exynos4 |
377 1 Denis 'GNUtoo' Carikli
378 280 Joonas Kylmälä
h2. Known error messages that are safe to ignore
379
380
* TestHarnessModeService: Failed to start Test Harness Mode; no implementation of PersistentDataBlockManagerInternal was bound
381
* JniUtils: Could not load native library jni_latinimegoogle
382
383 1 Denis 'GNUtoo' Carikli
h2. Links 
384 205 dl lud
385
* "Android build requirements - hardware and software":https://source.android.com/setup/build/requirements
386
* "Why LineageOS Developers are building Android Go-optimized custom ROMs":https://www.xda-developers.com/android-go-old-android-8-1-oreo/
387
* "Android Go recommended default values for propreties for optimization":https://android.googlesource.com/platform/build/+/master/target/product/go_defaults_common.mk
388
* "Team InFusion i9300 optimized system.prop":https://github.com/team-infusion-developers/android_device_samsung_i9300/blob/lineage-16.0/system.prop#L23
389
* "Hack to fix high CPU usage caused by logd":https://github.com/team-infusion-developers/android_device_samsung_smdk4412-common/commit/c66015514fc9779edfed2665f67e841f3620c71e
390
* "Use low-end video codecs":https://github.com/team-infusion-developers/android_device_samsung_smdk4412-common/commit/adc919f04b981a4fe005fab2cf443596a22992b2
391
* "Optimize ActivityManager cached apps":https://github.com/team-infusion-developers/android_device_samsung_smdk4412-common/commit/24bc62970d35eb5a7a257463e7dbfe873ceb5779
392
* "Use 1Gb Dalvik config":https://github.com/team-infusion-developers/android_device_samsung_smdk4412-common/commit/8a7cebc5af772a2949420ac4a383f5f75236c65c