SATA is not supported in the Toradex-provided bootloader. In order to boot the kernel and root filesystem from a removable media such an SD card, a USB stick or a SATA hard drive, refer to the article on how to Boot From an SD Card. U-Boot in Flash, Kernel and Rootfs in SD Card / USB / SATA drive
After installing an image (ideally through the Toradex Easy Installer) in any of our supported modules the booting sequence will automatically proceed. The variable bootcmd is properly set to load the kernel and pass the addresses of the device trees and the root filesystem, as well as additional kernel command line arguments. This is the standard configuration and the one which all our images default to. Boot Scenarios U-Boot, Kernel and Rootfs in Flash In order to set up the different boot scenarios, it is important to understand how to enter the U-Boot console and modify and store the environment variables that tell the bootloader how to find and load the rest of the elements. We also comment (and refer to) the Distro Boot way to boot. In this article we describe how to set up each of the above scenarios, as well as certain eMMC booting configurations. This configuation is common for kernel/application development and debugging from a connected host machine U-Boot in flash, kernel in a remote TFTP server and rootfs in a remote NFS server.It is also helpful for systems with scarce resources (e.g. This configuation is used for kernel/application development and debugging in isolated or offline systems. U-Boot in flash, kernel and rootfs in a SD card / USB / SATA drive.This is the standard configuration for production and testing There are combinations of these element locations that are commonly used for different purposes: Finally, the root filesystem could be stored either in flash memory, an SD card, a USB memory stick or remotely in a TFTP server or a NFS server. The kernel could be stored either in flash memory, an SD card, a USB memory stick or remotely in a TFTP server. For instance, U-boot could be stored either in flash memory, an SD card or a USB memory stick. However, it is possible for each of the elements to be stored in separate media. This is how our images are set up by default and no further configuration is needed for these cases. The bootloader also passes the memory addresses of the device trees and the root filesystem as well as any extra parameters to the kernel before handing over control to it. The bootloader is already configured through environment variables to automatically load the kernel from its memory location in flash. In a standard scenario, all of these elements are stored in the flash memory of the device. A root filesystem with the OS files, binaries and libraries.A linux kernel (and additionally the corresponding device trees).
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