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Build drivers from source for rpi (view source)
Revision as of 11:03, 10 May 2023
, 11:03, 10 May 2023→Compile drivers
Solutions：
Solutions：
1. Upgrade piOS, and build again.
====== 1. Upgrade piOS, and build again. ======
<code>sudo apt update</code>
<code>sudo apt update</code>
<code>sudo apt install raspberrypi-kernel-headers</code>
<code>sudo apt install raspberrypi-kernel-headers</code>
Specifically, for the Raspberry Pi 4 series, 32-bit PiOS will automatically switch to 64-bit mode after upgrading to the latest version. However, the raspberrypi-kernel-headers package is missing the build directory for the v8+ mode.
For example:
<code>$ uname -a</code>
<code>Linux raspberrypi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64 GNU/Linux</code>
There is no build directory under <code>/lib/modules/6.1.21-v8+/</code>.
If this happens, you can add <code>arm_64bit=0</code> to the <code>/boot/config.txt</code> file and then restart the Raspberry Pi to switch back to 32-bit mode.
====== 2. Install specific version kernel headers. ======
Download the deb package for the version of piOS you are currently using from this [https://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/ link] and install it.
Download the deb package for the version of piOS you are currently using from this [https://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/ link] and install it.
For tag name, please determine according to the local piOS version and raspberrypi OS [https://github.com/raspberrypi/linux/tags tags].
For tag name, please determine according to the local piOS version and raspberrypi OS [https://github.com/raspberrypi/linux/tags tags].
====== 3. Use rpi-source ======
Use rpi-source from <nowiki>https://github.com/RPi-Distro/rpi-source</nowiki> it sets up everything you need to build your own kernel (from the current running kernel by default).
=== Cross-Compiling the Drivers ===
=== Cross-Compiling the Drivers ===
The following operations are done on ubuntu PC.
The following operations are done on ubuntu PC.
=== Document History ===
=== Document History ===
* 20230510
Add solution for"Missing build directory" error.
* 20230326
* 20230326