# BCM5719 Firmware Reimplementation: rebuilding network-card firmware

> BCM5719 Firmware Reimplementation rebuilds firmware for the Broadcom BCM5719 network controller from the Ortega specification. Its source includes MIPS boot stages, an APE NC-SI handler, NVRAM and MII libraries, plus flash and register tools. The author reports testing on Talos II and Blackbird and says the firmware handles network traffic over NC-SI.

- Type: Case study
- Targets: Firmware
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/meklort/bcm5719-fw>
- Primary source: <https://github.com/meklort/bcm5719-fw/blob/3bc3260edc81ea2f12864cf1abed37b0cfbe82f6/README.md>
- Catalog page: <https://awesomerea.org/resources/bcm5719-firmware-reimplementation-case/>
- Record JSON: <https://awesomerea.org/resources/bcm5719-firmware-reimplementation-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/bcm5719-firmware-reimplementation-case/index.md)

## Requirements & limits

- **Prerequisites:** Targets BCM5719 cards; the author reports testing on Talos II and Blackbird.
- **Prerequisites:** Building requires a customized LLVM/Clang compiler, CMake 3.5.1 or later, and Linux utilities.
- **Limits:** Firmware remains in development; stage testing is minimal and tests are yet to be written.
- **License:** BSD-3-Clause licence.

## Primary sources

1. <https://github.com/meklort/bcm5719-fw/blob/3bc3260edc81ea2f12864cf1abed37b0cfbe82f6/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.