The Processor SDK provides Filesystem Images that contain programs, scripts, Linux user-space components that abstract various hardware accelerators available in the SoC. The Filesystem can be fully assembled via Yocto, following the instructions Processor_SDK_Building_The_SDK.
There are different filesystem images provided in the SDK. You’ll find them at the SDK Installation directory/filesystem/ folder.
This image is a complete minimal system containing a rootfs and an initrd with platform test utilities that can be used for new platform bringup activities. Typically one would use the bootstrap initrd till the storage media access is debugged, following which one would switch over to using the storage media of choice with the same content. This image has systemd replaced with sysvinit.
This is the barebones images, intended to be a starting point for users to add packages and create a custom filesystem that suits their project needs.
This is a minimal system image enabled with containers to provide an environment to start the next level of complex systems up. Depending on the platform capabilities, graphics is enabled by default as well.
This is the complete filesystem image, that contains standard Linux commands and features. This also contains the TI component libraries, binaries and out of box examples.