B E L K Q u i c k S t a r t G u i d e
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case the target is a SOM, while the host is assumed to be a PC
running the Linux operating system, either in a physical
installation or as a virtual machine. The bootloader running on
the target can download the Linux kernel image through the
network (TFTP), as well as the u-boot binary images (useful
when an update of the bootloader is required). Moreover, the
Linux kernel running on the target is able to mount the root file
system from different physical media, for example from a
directory exported via Network File System (NFS) by the host.
This strategy (kernel image and RFS retrieved from the
network) saves time during the development phase, since no
flash reprogramming or removable storage (SD, usb pen drives,
external disks) is required to test new versions or updates of
the software components. In contrast with a typical embedded
system, BORA/BORAX adds some complexity, due to the nature
of the Zynq processor, which provides both a CPU core (PS,
processing system) and a integrated FPGA (PL, programmable
logic). This means that additional tools are required to manage
this complexity. In particular, the Vivado® Design Suite and
the Xilinx Software Development Kit are required for the
hardware level configuration and for building the first stage
boot loader (FSBL).
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