Tag: embedded linux

Real-Time and Safety on Cortex-R5: Integrating Firmware with Linux on the BeagleBone AI-64

Before we get into the BeagleBone AI-64’s TDA4VM, let me start with something more personal. The first microprocessor I ever worked with was a Z80. It wasn’t soldered onto a PCB or hidden under a heatsink. Instead, it sat fully exposed on a breadboard, with the address bus, data bus, control lines, and all the […]

Embedded Firewalls ( Part 2)

In Part 1, I told a little bit of a story. We left the “stupid black boxes” era behind, looked at why embedded devices must have network-level protection, and then unpacked how and why Linux firewalls work with nftables, and why it’s a much cleaner, modern approach compared to the old iptables/xtables world.We also mapped […]