Difference between revisions of "Build drivers from source for rpi"
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Solutions: | Solutions: | ||
− | 1. Upgrade piOS, and build again. | + | ====== 1. Upgrade piOS, and build again. ====== |
+ | <code>sudo apt update</code> | ||
− | <code>sudo apt | + | <code>sudo apt full-upgrade</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. | ||
Line 189: | Line 206: | ||
=== Document History === | === Document History === | ||
+ | |||
+ | * 20230510 | ||
+ | |||
+ | Add solution for"Missing build directory" error. | ||
* 20230326 | * 20230326 |
Latest revision as of 11:03, 10 May 2023
The main resources in this section are the official piOS building method.
We provide methods to compile locally on Raspberry Pi and cross-compile on PC. It is recommended to use Raspberry Pi local compilation, which is simpler and faster.
1 Building the Drivers Locally
The following operations are performed on the Raspberry Pi.
The following is an example of piOS 5.15.32.
1.1 Prepare environment
sudo apt install git bc bison flex libssl-dev make
1.2 Download the kernel headers for the local piOS
sudo apt install raspberrypi-kernel-headers
1.3 Download drivers code from veye
git clone https://github.com/veyeimaging/raspberrypi_v4l2.git
1.4 Confirm the version of piOS on your own Raspberry Pi
$ uname -a
Linux raspberrypi 5.15.32-v8+ #1538 SMP PREEMPT Thu Mar 31 19:40:39 BST 2022 aarch64 GNU/Linux
1.5 Compile drivers
cd ~/raspberrypi_v4l2/driver_source/cam_drv_src/rpi-5.15_all
make
Done.
1.6 Compile dts
cd ~/raspberrypi_v4l2/driver_source/dts/rpi-5.15.y
./build_dtbo.sh
Done.
1.7 Common errors
1.7.1 Missing build directory
make[1]: *** /lib/modules/[version]/build: No such file or directory. Stop.
The cmd sudo apt install raspberrypi-kernel-headers
will simply install the latest kernel headers available on the mirror. Which indeed matches the latest available kernel on the mirror. But not necessarily the installed kernel on the system.
The Raspbian maintainers always remove the older kernel headers from the repository index files. Not sure why they do that.
Solutions:
1.7.1.1 1. Upgrade piOS, and build again.
sudo apt update
sudo apt full-upgrade
sudo apt install raspberrypi-kernel-headers
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:
$ uname -a
Linux raspberrypi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64 GNU/Linux
There is no build directory under /lib/modules/6.1.21-v8+/
.
If this happens, you can add arm_64bit=0
to the /boot/config.txt
file and then restart the Raspberry Pi to switch back to 32-bit mode.
1.7.1.2 2. Install specific version kernel headers.
Download the deb package for the version of piOS you are currently using from this link and install it.
For tag name, please determine according to the local piOS version and raspberrypi OS tags.
1.7.1.3 3. Use rpi-source
Use rpi-source from https://github.com/RPi-Distro/rpi-source it sets up everything you need to build your own kernel (from the current running kernel by default).
2 Cross-Compiling the Drivers
The following operations are done on ubuntu PC.
2.1 Build cross-compilation environment on Ubuntu 64-bit operating system)
sudo apt install git bc bison flex libssl-dev make libc6-dev libncurses5-dev
- 32-bit piOS target version
sudo apt install crossbuild-essential-armhf
- 64-bit piOS target version
sudo apt install crossbuild-essential-arm64
2.2 Download the standard version of the piOS source code
2.2.1 Confirm the piOS version of your raspberry Pi
Release version
$ uname -a
Linux raspberrypi 5.4.72-v7l+ #1356 SMP Thu Oct 22 13:57:51 BST 2020 armv7l GNU/Linux
Code tag
$ cp /usr/share/doc/raspberrypi-bootloader/changelog.Debian.gz ./
gunzip changelog.Debian.gz
Check the top lines and you will know the tag.
2.2.2 There are two ways to get the source code of the version you want:
- using git to clone the corresponding branch and checkout the corresponding tag.
git clone --branch rpi-5.4.y https://github.com/raspberrypi/linux
git checkout raspberrypi-kernel_1.20201022-1
PS: Please replace the above two commands with your own corresponding versions.
2. Manually download the version code of the corresponding tag directly from the link below.
https://github.com/raspberrypi/linux/tags
2.3 Patch our code to kernel
git clone https://github.com/veyeimaging/raspberrypi_v4l2.git
- Driver source code
camera driver path is : linux/drivers/media/i2c,copy our camera module drivers to this path.
- Modify the the Makefile and Kconfig files
Modify the Config and Makefile in the same path,add the corresponding camera driver.
- dts file
dts file path is :linux/arch/arm/boot/dts/overlays,copy our [camera]-overlay.dts files to this path.
- Modify dts Makefile
Modify the Makefile in the same path,add the corresponding dts compilation option.
2.4 Building
2.4.1 Preparing
- For Raspberry Pi 1, Zero and Zero W, and Raspberry Pi Compute Module 1 default (32-bit only) build configuration
KERNEL=kernel
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcmrpi_defconfig
- For Raspberry Pi 2, 3, 3+ and Zero 2 W, and Raspberry Pi Compute Modules 3 and 3+ default 32-bit build configuration
KERNEL=kernel7
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig
- For Raspberry Pi 4 and 400, and Raspberry Pi Compute Module 4 default 32-bit build configuration
KERNEL=kernel7l
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2711_defconfig
- For Raspberry Pi 3, 3+, 4, 400 and Zero 2 W, and Raspberry Pi Compute Modules 3, 3+ and 4 default 64-bit build configuration
KERNEL=kernel8
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- bcm2711_defconfig
2.4.2 Add compilation options
- 32-bit version
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
- 64-bit version
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- menuconfig
Add the compilation options by the corresponding camera module, for 5.4 version kernel the path is driver-- > multimedia-- > i2C.
For 5.10 version kernel,the path is Device Drivers --> Multimedia Support --> Media ancillary drivers --> Camera sensor devices.
2.4.3 Build
32-bit version
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs -j4
64-bit version
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image modules dtbs -j4
3 Install the compiled driver
Once compiled, you get the specified version of the driver and dtbo file.
Refer to How to install driver,
wget https://github.com/veyeimaging/raspberrypi_v4l2/releases/latest/download/raspberrypi_v4l2.tgz
tar -xzvf raspberrypi_v4l2.tgz
cd raspberrypi_v4l2/release/
mkdir driver_bin/$(uname -r)
Put the driver and dtbo files compiled into this directory.
chmod +x *
sudo ./install_driver.sh [camera module]
camera module:could be veye327,csimx307,cssc132,veyecam2m,etc.
4 References
https://www.raspberrypi.org/documentation/linux/kernel/building.md
5 Document History
- 20230510
Add solution for"Missing build directory" error.
- 20230326
Add description and solution for "Missing build directory" error.
- 20220424
Add local build method.
- 20220411
Add description of MV series.