Rockpi4/dev/compile-a-kernel-module-on-rockpi4 - Revision history

Yanw: /* Software Support */

2021-10-20T11:01:43Z

‎Software Support

Stephen: /* Example: r8152 device driver */

2019-11-07T03:18:35Z

‎Example: r8152 device driver

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2019-11-07T01:39:25Z

Created page with "{{rockpi4_header}} {{Languages|rockpi4/dev/libmraa}} ROCK Pi 4 > Development > rockpi4/dev/compile-a-kernel-module-on-rockpi4 | Comp..."

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[[rockpi4 | ROCK Pi 4]] > [[rockpi4/dev | Development]] > [[rockpi4/dev/compile-a-kernel-module-on-rockpi4 | 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 [https://dl.radxa.com/rockpi4/images/debian/ Debian] and [https://dl.radxa.com/rockpi4/images/ubuntu/ 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''' ans '''bionic-testing''' repositories.

Also, you need to update rockchip-fstab, rockchip-overlay, u-boot packages. And [[rockpi4/radxa-apt | 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

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.

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

@@ Line 13: / Line 13: @@
 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''' ans '''bionic-testing''' repositories.
+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.

@@ Line 24: / Line 24: @@
    $ sudo apt-get install -y libssl-dev build-essential
 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.
@@ Line 63: / Line 68: @@
    $ sudo rmmod r8152
 === FAQs ===