AM625: about rootfs

hao teng

Part Number: AM625

Tool/software:

I found that the tisdk-default-image-am62xx-evm is approximately 1.8G in size, while the tisdk-base-image-am62xx-evm is only 166M. I also want to reduce my system. I have re-made the rootfs using buildroot. However, after compiling the kernel and executing make module install, there are a large number of modules in the directory /lib/modules/ under the installation folder. The tisdk_am62xx-evm-rt_defconfig I used when compiling the kernel. Can I only cancel them one by one through make menuconfig? Are there any better methods to reduce the modules?

thanks

4 months ago

0 Andreas Dannenberg 4 months ago

TI__Guru 69652 points

I think the cleanest way is to disable them through the configuration system. This will also help ensure that dependencies are taken care off correctly.

Regards, Andreas

0 hao teng 4 months ago in reply to Andreas Dannenberg

Intellectual 360 points

Currently, my approach is to build a relatively clean rootfs using Buildroot, and U-boot and the kernel are recompiled from the code in the SDK. I found that the tisdk_am62xx-evm-rt_defconfig used when compiling the kernel is the same as the config.gz in the base system, but before transplanting the Image and U-boot, I need to run "make module install" to install a large number of compiled modules to the /lib/modules/$uname/driver and bin directories. Why is the base system packaged by Yocto so small?

thanks

0 Andreas Dannenberg 4 months ago in reply to hao teng

TI__Guru 69652 points

Hao,

hao teng said:
Currently, my approach is to build a relatively clean rootfs using Buildroot, and U-boot and the kernel are recompiled from the code in the SDK.

We have an official Buildroot SDK for AM62x, see here...

https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/11_00_09_04_Buildroot/exports/docs/buildroot/Overview.html
https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM62X/

Why are you not using this, but instead stitch together different components manually?

hao teng said:
Why is the base system packaged by Yocto so small?

Some of the very small Yocto image targets (I think tiny image) do not include any Kernel modules at all. You can inspect the image directories to make sure.

Regards, Andreas

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AM625: about rootfs