Difference between revisions of "Build drivers from source for rpi/zh"
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[[Build drivers from source for rpi|English]] | [[Build drivers from source for rpi|English]] | ||
− | <br /> | + | 本文主要参考资料为[https://www.raspberrypi.org/documentation/linux/kernel/building.md 官方piOS编译方法]。我们采用交叉编译的方法,5.4.72版本32bitOS为例进行说明。 |
+ | |||
+ | 以下操作均在ubuntu PC上进行。 | ||
+ | ====开发环境准备==== | ||
+ | <code>sudo apt install git bc bison flex libssl-dev make libc6-dev libncurses5-dev</code> | ||
+ | |||
+ | *32-bit piOS target version | ||
+ | |||
+ | <code>sudo apt install crossbuild-essential-armhf</code> | ||
+ | |||
+ | *64-bit piOS target version | ||
+ | |||
+ | <code>sudo apt install crossbuild-essential-arm64</code> | ||
+ | ====下载标准版本==== | ||
+ | =====首先,请确认自己的树莓派上的piOS版本:===== | ||
+ | |||
+ | *Release version | ||
+ | |||
+ | <code>$ uname -a</code> | ||
+ | |||
+ | <code>Linux raspberrypi 5.4.72-v7l+ #1356 SMP Thu Oct 22 13:57:51 BST 2020 armv7l GNU/Linux</code> | ||
+ | |||
+ | *Code tag | ||
+ | |||
+ | <code>$ cp /usr/share/doc/raspberrypi-bootloader/changelog.Debian.gz ./</code> | ||
+ | |||
+ | <code>gunzip changelog.Debian.gz</code> | ||
+ | |||
+ | 查看最上面一条,确定代码tag。 | ||
+ | =====有两种方法可以得到自己想要的版本的源码:===== | ||
+ | 在PC上: | ||
+ | |||
+ | 1. 采用git获取到对应branch上的对应tag版本代码 | ||
+ | |||
+ | <code>git clone --branch rpi-5.4.y <nowiki>https://github.com/raspberrypi/linux</nowiki></code> | ||
+ | |||
+ | <code>git checkout raspberrypi-kernel_1.20201022-1</code> | ||
+ | |||
+ | PS:以上两条命令请替换为自己对应的版本。 | ||
+ | |||
+ | 2. 直接从如下链接手动下载对应tag的版本代码 | ||
+ | |||
+ | https://github.com/raspberrypi/linux/tags | ||
+ | ====patch我们的驱动代码==== | ||
+ | |||
+ | *Driver source code | ||
+ | |||
+ | camera驱动源码路径为: linux/drivers/media/i2c,将camera驱动的源码放到对应目录。 | ||
+ | |||
+ | *Modify the the Makefile and Kconfig files | ||
+ | |||
+ | 修改同路径下的Config和Makefile,增加对应camera驱动。 | ||
+ | |||
+ | *dts file | ||
+ | |||
+ | dts文件路径为:linux/arch/arm/boot/dts/overlays,将[camera]-overlay.dts文件放到此路径。 | ||
+ | |||
+ | *Modify dts Makefile | ||
+ | |||
+ | 修改同路径下的Makefile,增加对应dts编译选项。 | ||
+ | ====编译==== | ||
+ | =====编译准备===== | ||
+ | 不同树莓派的编译选项不同,区别如下: | ||
+ | |||
+ | *For Raspberry Pi 1, Zero and Zero W, and Raspberry Pi Compute Module 1 default (32-bit only) build configuration | ||
+ | |||
+ | <code>KERNEL=kernel</code> | ||
+ | |||
+ | <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcmrpi_defconfig</code> | ||
+ | |||
+ | *For Raspberry Pi 2, 3, 3+ and Zero 2 W, and Raspberry Pi Compute Modules 3 and 3+ default 32-bit build configuration | ||
+ | |||
+ | <code>KERNEL=kernel7</code> | ||
+ | |||
+ | <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig</code> | ||
+ | |||
+ | *For Raspberry Pi 4 and 400, and Raspberry Pi Compute Module 4 default 32-bit build configuration | ||
+ | |||
+ | <code>KERNEL=kernel7l</code> | ||
+ | |||
+ | <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2711_defconfig</code> | ||
+ | |||
+ | *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 | ||
+ | |||
+ | <code>KERNEL=kernel8</code> | ||
+ | |||
+ | <code>make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- bcm2711_defconfig</code> | ||
+ | =====增加编译选项===== | ||
+ | |||
+ | *32-bit version | ||
+ | |||
+ | <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig</code> | ||
+ | |||
+ | *64-bit version | ||
+ | |||
+ | <code>make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- menuconfig</code> | ||
+ | |||
+ | 增加对应camera模块驱动的编译选项,linux5.4版本路径为driver-->multimedia-->i2c; | ||
+ | |||
+ | 5.10版本kernel的路径是Device Drivers --> Multimedia Support --> Media ancillary drivers --> Camera sensor devices。 | ||
+ | =====编译输出===== | ||
+ | |||
+ | *32-bit version | ||
+ | |||
+ | <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs -j4</code> | ||
+ | |||
+ | *64-bit version | ||
+ | |||
+ | <code>make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image modules dtbs -j4</code> | ||
+ | ===常见问题=== | ||
+ | |||
+ | *disagrees about version of symbol module_layout | ||
+ | |||
+ | 系统启动过后,dmesg可以看到camera的驱动加载的时候报这个错误。由于板子上原有的piOS版本与编译后的camera驱动版本不匹配导致。 | ||
+ | |||
+ | 建议参考这个[https://www.raspberrypi.com/documentation/computers/linux_kernel.html#cross-compiling-the-kernel 链接],从代码重新编译,并整体安装Image、dtb、modules。 | ||
+ | ===参考资料=== | ||
+ | |||
+ | *树莓派的piOS编译方案: | ||
+ | |||
+ | https://www.raspberrypi.org/documentation/linux/kernel/building.md<br /> |
Revision as of 17:07, 11 April 2022
本文主要参考资料为官方piOS编译方法。我们采用交叉编译的方法,5.4.72版本32bitOS为例进行说明。
以下操作均在ubuntu PC上进行。
1 开发环境准备
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 下载标准版本
2.1 首先,请确认自己的树莓派上的piOS版本:
- 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
查看最上面一条,确定代码tag。
2.2 有两种方法可以得到自己想要的版本的源码:
在PC上:
1. 采用git获取到对应branch上的对应tag版本代码
git clone --branch rpi-5.4.y https://github.com/raspberrypi/linux
git checkout raspberrypi-kernel_1.20201022-1
PS:以上两条命令请替换为自己对应的版本。
2. 直接从如下链接手动下载对应tag的版本代码
https://github.com/raspberrypi/linux/tags
3 patch我们的驱动代码
- Driver source code
camera驱动源码路径为: linux/drivers/media/i2c,将camera驱动的源码放到对应目录。
- Modify the the Makefile and Kconfig files
修改同路径下的Config和Makefile,增加对应camera驱动。
- dts file
dts文件路径为:linux/arch/arm/boot/dts/overlays,将[camera]-overlay.dts文件放到此路径。
- Modify dts Makefile
修改同路径下的Makefile,增加对应dts编译选项。
4 编译
4.1 编译准备
不同树莓派的编译选项不同,区别如下:
- 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
4.2 增加编译选项
- 32-bit version
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
- 64-bit version
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- menuconfig
增加对应camera模块驱动的编译选项,linux5.4版本路径为driver-->multimedia-->i2c;
5.10版本kernel的路径是Device Drivers --> Multimedia Support --> Media ancillary drivers --> Camera sensor devices。
4.3 编译输出
- 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
5 常见问题
- disagrees about version of symbol module_layout
系统启动过后,dmesg可以看到camera的驱动加载的时候报这个错误。由于板子上原有的piOS版本与编译后的camera驱动版本不匹配导致。
建议参考这个链接,从代码重新编译,并整体安装Image、dtb、modules。
6 参考资料
- 树莓派的piOS编译方案:
https://www.raspberrypi.org/documentation/linux/kernel/building.md