Let’s pull back the curtain on dcboot.bin . Simply put, dcboot.bin is a second-stage program loader (SPL) for TI processors. Its name derives from D irect C onnect Boot —a reference to the JTAG-less, memory-mapped boot process from external flash.
It is the full U-Boot. It is not the ROM code. dcboot.bin
If you’ve ever built a Yocto Project image for a BeagleBone Black or compiled U-Boot for a custom industrial controller, you’ve likely seen this file appear in your deployment directory. But what is it? Is it a bootloader? A piece of ROM code? Neither. Let’s pull back the curtain on dcboot