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An open-source RISC-V firmware platform for ESP32-C6. Implements a BIOS/Payload architecture with a custom system call interface (ABI), independent LP-Core coprocessor management, and an anti-brick A/B OTA system.

4 starsC

OpenC6 BIOS – A PC-like bare-metal bootloader and OS for ESP32-C6

by Rompass·Jun 17, 2026·2 points·1 comment
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AI Analysis

●●●BangerWizardryBig BrainNiche Gem

Brings PC BIOS architecture to a $2 microcontroller with out-of-band LP-Core management.

Strengths
  • •LP-Core coprocessor handles watchdogs and thermal shutdown even when main OS crashes
  • •Payloads compile without ESP-IDF at 2-10KB using standardized ABI with BIOS-provided engines
  • •Retro web BIOS UI accessible via Wi-Fi AP mode with classic blue-screen aesthetic
Weaknesses
  • •ESP32-C6 specific limits audience to Espressif RISC-V adopters
  • •Documentation deep-dives exist but no pre-built payload examples for quick start
Category
Hardware
Target Audience

Embedded developers, RISC-V enthusiasts, IoT firmware engineers

Similar To

Coreboot · U-Boot · ESP-IDF

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