diff options
| author | Daniel Micay <danielmicay@gmail.com> | 2019-05-01 12:15:52 -0400 |
|---|---|---|
| committer | Daniel Micay <danielmicay@gmail.com> | 2019-05-01 12:18:31 -0400 |
| commit | 3f47a7b5424805613605b7141dcc93c195868a21 (patch) | |
| tree | ded992ff842cb0b104d3376055d04b853f681877 /static/build.html | |
| parent | cdaaf36957bf4a20bdd6defa46aa72289aa066b6 (diff) | |
add more notes on android-prepare-vendor
Diffstat (limited to 'static/build.html')
| -rw-r--r-- | static/build.html | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/static/build.html b/static/build.html index c9fe7577..de004dc6 100644 --- a/static/build.html +++ b/static/build.html @@ -205,6 +205,14 @@ git am ../chromium_patches/*.patch</pre> <p>This section does not apply to devices where no extra vendor files are required (HiKey, HiKey 960, emulator, generic targets).</p> + <p>Many of these components are already open source, but not everything is set up to + be built by the Android Open Source Project build system. Switching to building these + components from source will be an incremental effort. In many cases, the vendor files + simply need to be ignored and AOSP will already provide them instead. Firmware cannot + generally be built from source even when sources are available, other than to verify + that the official builds match the sources, since it has signature verification (which + is an important part of the verified boot and attestation security model).</p> + <p>Extract the vendor files corresponding to the matching release:</p> <pre>vendor/android-prepare-vendor/execute-all.sh -d DEVICE -b BUILD_ID -o vendor/android-prepare-vendor @@ -213,7 +221,7 @@ rm -rf vendor/google_devices/DEVICE mv vendor/android-prepare-vendor/DEVICE/BUILD_ID/vendor/google_devices/* vendor/google_devices/</pre> <p>Note that android-prepare-vendor is non-deterministic unless a timestamp parameter is - passed.</p> + passed with <code>--timestamp</code> (seconds since Epoch).</p> <h2>Building</h2> |