Difference between revisions of "Rockpi4/dev/compile-a-kernel-module-on-rockpi4"
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For kernel, you need to upgrade to at least '''4.4.154-98-rockchip''' version. | For kernel, you need to upgrade to at least '''4.4.154-98-rockchip''' version. | ||
| − | Note that the latest U-boot and Kernel packages are in '''Radxa APT''' '''stretch-testing''' | + | Note that the latest U-boot and Kernel packages are in '''Radxa APT''' '''stretch-testing''' and '''bionic-testing''' repositories. |
Also, you need to update rockchip-fstab, rockchip-overlay, u-boot packages. And [[rockpi4/radxa-apt | Radxa APT]] helps. | Also, you need to update rockchip-fstab, rockchip-overlay, u-boot packages. And [[rockpi4/radxa-apt | Radxa APT]] helps. | ||
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$ sudo apt-get install -y libssl-dev build-essential | $ sudo apt-get install -y libssl-dev build-essential | ||
| + | |||
| + | Recompile dependent libraries. | ||
| + | |||
| + | $ cd /usr/src/linux-headers-$(uname -r) | ||
| + | $ make scripts | ||
Download [https://github.com/wget/realtek-r8152-linux/archive/master.zip r8152 driver source code] to ROCK Pi 4 and extract it to home directory. | Download [https://github.com/wget/realtek-r8152-linux/archive/master.zip r8152 driver source code] to ROCK Pi 4 and extract it to home directory. | ||
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$ sudo rmmod r8152 | $ sudo rmmod r8152 | ||
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=== FAQs === | === FAQs === | ||
Latest revision as of 11:01, 20 October 2021
ROCK Pi 4 > Development > Compile a kernel module on ROCK Pi 4
Description
This guide is for compiling a kernel module for ROCK Pi 4 on ROCK Pi 4 board. You can use system images Debian and Ubuntu.
Software Support
For kernel, you need to upgrade to at least 4.4.154-98-rockchip version.
Note that the latest U-boot and Kernel packages are in Radxa APT stretch-testing and bionic-testing repositories.
Also, you need to update rockchip-fstab, rockchip-overlay, u-boot packages. And Radxa APT helps.
Example: r8152 device driver
Here take r8152 device driver as an example.
Install necessary packages.
$ sudo apt-get install -y libssl-dev build-essential
Recompile dependent libraries.
$ cd /usr/src/linux-headers-$(uname -r) $ make scripts
Download r8152 driver source code to ROCK Pi 4 and extract it to home directory.
Go to the top-level directory of the source code
$ cd realtek-r8152-linux-master $ ls 50-usb-realtek-net.rules compatibility.h Makefile r8152.c ReadMe.txt
Generate r8152.ko file.
$ make
Check kernel release and processor
$ uname -rp 4.4.154-98-rockchip-gcbc3da2ca32c aarch64
Check r8152 ko information
$ modinfo r8152.ko filename: /home/rock/r8152_2.12.0/r8152.ko version: v2.12.0 (2019/04/29) license: GPL description: Realtek RTL8152/RTL8153 Based USB Ethernet Adapters author: Realtek nic sw <nic_swsd@realtek.com> srcversion: 576F778ECF92A5E23120A75 ... depends: vermagic: 4.4.154-98-rockchip-gcbc3da2ca32c SMP mod_unload aarch64
The vermagic of module should be the same as current kernel release version like 4.4.154-98-rockchip-gcbc3da2ca32c.
Install driver module to kernel.
$ sudo make install
Remove driver module.
$ sudo rmmod r8152
FAQs
Troubleshooting
If you have issue with compiling a kernel module on ROCK Pi 4, start a new post on the forum. https://forum.radxa.com/c/dev