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--- products:sbc:vim4:development:android:build-android [2022/07/05 21:59]
nick ↷ Page moved from products:sbc:vim4:development:build-android to products:sbc:vim4:development:android:build-android
+++ products:sbc:vim4:development:android:build-android [2022/09/28 09:46]
nick
@@ Line 1: / Line 1: @@
-{{indexmenu_n>3}}
+{{indexmenu_n>15}}
-====== Build Android ======
+====== VIM4 Build Android ======
+===== Preparations =====
+  * [[http://source.android.com/source/initializing.html|Set up a Build Environment]]
+  * [[products:sbc:vim4:development:android:download-android-source-code|Downloading the Android Source]]
+  * [[products:sbc:vim4:development:android:install-toolchains|Install Toolchains for the Amlogic Platform]]
+===== Building =====
+<WRAP important >
+Make sure you have done all the ''Preparations'' listed above before getting started.
+</WRAP>
+==== Build U-Boot ====
+```shell
+$ cd PATH_YOUR_PROJECT
+$ cd bootloader/uboot
+$ ./mk kvim4 --avb2 --vab
+```
+Gernerate images in this step:
+  * ''build/u-boot.bin'': for onboard eMMC storage booting
+  * ''build/u-boot.bin.sd.bin'': for external TF card booting
+==== Build Linux Kernel ====
+```shell
+$ ./mk kvim4 -v 5.4 -jN
+```
+<WRAP important >
+Replace ''N'' with the actual number of threads on your own computer.
+</WRAP>
+==== Build Android ====
+```shell
+$ cd PATH_YOUR_PROJECT
+$ . build/envsetup.sh
+$ lunch TARGET_LUNCH
+$ make -jN otapackage
+```
+Gernerate images in this step: ''out/target/product/TARGET/update.img''.
+<WRAP important >
+  * Unlike VIM3,  VIM4 doesn't support compiling Android and Linux Kernel at the same time.
+  * Replace ''N'' with the actual number of threads on your own computer
+  * Replace ''TARGET_LUNCH'' to your lunch select.
+    * For VIM4, it's ''kvim4-userdebug''.
+</WRAP>
+==== Build Script Demo ====
+```sh demo.sh
+$ cat demo.sh
+#!/bin/bash
+#build U-Boot
+if [ "$1" == 'u' ] || [ "$1" == 'n' ]; then
+	echo "build U-Boot"
+	cd bootloader/uboot
+	./mk kvim4 --avb2 --vab
+	cd -
+fi
+#build Kernel
+if [ "$1" == 'k' ] || [ "$1" == 'n' ]; then
+	echo "build Kernel"
+if [ "$2" == 'n' ] || [ "$1" == 'n' ]; then
+	make distclean
+fi
+	./mk kvim4 -v 5.4 -j100
+fi
+#build Android
+if [ "$1" == 'a' ] || [ "$1" == 'n' ]; then
+	echo "build Android"
+if [ "$2" == 'n' ] || [ "$1" == 'n' ]; then
+	make clean
+fi
+	. build/envsetup.sh
+	lunch kvim4-userdebug
+	make installclean
+	#make -j80 otapackage
+	make -j80
+fi
+```
+**Build U-Boot:**
+```shell
+$ ./demo.sh u
+```
+**Build Kernel:**
+```shell
+$ ./demo.sh k
+```
+**Build Android:**
+```shell
+$ ./demo.sh a
+```
+**Build all:**
+```shell
+$ ./demo.sh n
+```

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