Joshua

A custom Yocto-based platform for AM335x, AM62x, and AM64x — the industrial workhorse line. Deterministic I/O with PRU-ICSS, industrial networking, long-lifecycle support.

• Validated on AM335x, AM62x, AM64x (BeagleBone and TI EVK ecosystems).
• Multi-stage boot: ROM → SPL / tiboot3 → U-Boot → Linux (incl. SYSFW / TIFS on AM6x).
• PRU-ICSS firmware and RTOS on Cortex-M4F / R5F cores.
• Industrial workhorse with long-lifecycle support.

Industrial bring-up

• Schematic review: DDR routing / config, power sequencing (PMIC integration), boot-strap pins.
• Custom BSP and device tree development.
• Board bring-up and smoke test.
• Custom bootloader: SPL / U-Boot port, boot-media strategy, SYSFW integration on AM6x.

Unattended boot

• Golden boot development, memory partitioning.
• Failsafe and rollback boot with watchdog supervision — built for unattended industrial sites.
• Secure boot and signed images where the deployment demands it.
• Provisioning designed for the production line, not the lab.

PRU + ARM

• Kernel customization on TI trees with strong mainline support on Sitara.
• PREEMPT_RT porting — Sitara is a first-class RT target.
• Boot streamlining for industrial fast-start requirements.
• PRU-ICSS interface drivers and remoteproc integration.

Industry-specific images

• joshua-industrial — EtherCAT (via PRU-ICSS), PROFINET, EtherNet/IP, Modbus, OPC UA, TSN on AM64x.
• joshua-iot — MQTT, edge gateways, protocol translation.
• joshua-automation — real-time control stacks, motor control integration.
• joshua-medical — traceable builds, SBOM, audit-ready workflow.
• System services hardening, read-only rootfs, watchdog supervision.

Failsafe OTA

• A/B updates covering kernel, rootfs, and PRU firmware together.
• Automatic rollback — a failed update never stops a line.
• Cloud or on-prem server, staged rollouts, delta updates.
• Dashboard UI for fleet / release management with signed update chain.

Timing tooling

• Evaluation images for TI EVKs / BeagleBone and custom boards.
• Application SDK and Yocto eSDK.
• Debugging: JTAG (CCS / XDS), kgdb, gdbserver.
• Profiling: perf, LTTng, boot and latency profiling.

Sub-microsecond I/O

• FreeRTOS / Zephyr on Cortex-M4F (AM62x) and R5F (AM64x) cores.
• PRU-ICSS firmware: deterministic sub-microsecond I/O, custom industrial protocols.
• RPMsg / remoteproc communication between Linux and real-time domains.
• Encoder / PWM interfaces and mixed-criticality industrial architectures.

Deterministic factory

• Industrial Ethernet (CPSW / ICSSG), CAN, ADC / touch, display (LCDC / DSS) support.
• Custom SPI / I²C device drivers.
• Factory provisioning and per-device identity workflows.
• Deterministic real-time — at a cost FPGA can't match.