Difference between revisions of "Build drivers from source for rpi"

Revision as of 17:29, 24 April 2022

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

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

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 References

https://www.raspberrypi.org/documentation/linux/kernel/building.md

4 Document History

20220411

Add description of MV series.

@@ Line 1: / Line 1: @@
 [[Build drivers from source for rpi/zh|查看中文]]
-The main resources in this section are the [https://www.raspberrypi.org/documentation/linux/kernel/building.md official piOS building method]. We use the method of cross-compilation.
+The main resources in this section are the [https://www.raspberrypi.org/documentation/linux/kernel/building.md 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.
+=== Building the Drivers Locally ===
+=== Cross-Compiling the Drivers ===
 The following operations are done on ubuntu PC.
-===Build cross-compilation environment on Ubuntu 64-bit operating system)===
+====Build cross-compilation environment on Ubuntu 64-bit operating system)====
 <code>sudo apt install git bc bison flex libssl-dev make libc6-dev libncurses5-dev</code>
@@ Line 14: / Line 19: @@
 <code>sudo apt install crossbuild-essential-arm64</code>
-===Download the standard version of the piOS source code===
+====Download the standard version of the piOS source code====
 =====Confirm the piOS version of your raspberry Pi=====
@@ Line 60: / Line 65: @@
 Modify the Makefile in the same path，add the corresponding dts compilation option.
-===Building===
+====Building====
-====Preparing====
+=====Preparing=====
 *For Raspberry Pi 1, Zero and Zero W, and Raspberry Pi Compute Module 1 default (32-bit only) build configuration
@@ Line 86: / Line 91: @@
 <code>make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- bcm2711_defconfig</code>
-====Add compilation options====
+=====Add compilation options=====
 *32-bit version
@@ Line 108: / Line 113: @@
 <code>make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image modules dtbs -j4</code>
-===Frequently Questions===
-*disagrees about version of symbol module_layout
-After the system has been booted, <code>dmesg</code> can see this error reported when the driver of camera is loaded. It is caused by the mismatch between the original piOS version on the board and the compiled camera driver version.
-It is recommended to refer to this [https://www.raspberrypi.com/documentation/computers/linux_kernel.html#cross-compiling-the-kernel link] to recompile from the code and install Image, dtb, modules as a whole.
 ===References===
 https://www.raspberrypi.org/documentation/linux/kernel/building.md