92 lines
2.7 KiB
Docker
92 lines
2.7 KiB
Docker
# Lightweight Dockerfile for ESP32 QEMU emulation
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# Uses pre-built QEMU binaries without full ESP-IDF
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FROM ubuntu:22.04
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# Install minimal dependencies
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RUN apt-get update && apt-get install -y \
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wget \
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xz-utils \
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python3 \
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python3-pip \
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&& rm -rf /var/lib/apt/lists/*
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# Install esptool for flash image creation
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RUN pip3 install --no-cache-dir esptool
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# Create workspace
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WORKDIR /workspace
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# Download and install ESP32 QEMU binaries
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ENV QEMU_VERSION=esp-develop-8.2.0-20240122
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RUN mkdir -p /opt/qemu && \
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cd /opt/qemu && \
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wget -q https://github.com/espressif/qemu/releases/download/${QEMU_VERSION}/qemu-xtensa-softmmu-${QEMU_VERSION}-x86_64-linux-gnu.tar.xz && \
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tar -xf qemu-xtensa-softmmu-${QEMU_VERSION}-x86_64-linux-gnu.tar.xz && \
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rm qemu-xtensa-softmmu-${QEMU_VERSION}-x86_64-linux-gnu.tar.xz && \
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mv qemu /usr/local/
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# Add QEMU to PATH
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ENV PATH=/usr/local/qemu/bin:$PATH
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# Download ESP32 ROM files
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RUN mkdir -p /opt/esp-rom && \
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cd /opt/esp-rom && \
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wget -q https://github.com/espressif/qemu/raw/esp-develop/pc-bios/esp32-v3-rom.bin && \
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wget -q https://github.com/espressif/qemu/raw/esp-develop/pc-bios/esp32c3-rom.bin && \
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wget -q https://github.com/espressif/qemu/raw/esp-develop/pc-bios/esp32s2-rom.bin && \
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wget -q https://github.com/espressif/qemu/raw/esp-develop/pc-bios/esp32s3-rom.bin
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# Set ROM path environment variable
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ENV ESP_ROM_PATH=/opt/esp-rom
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# Create entrypoint script
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RUN cat > /entrypoint.sh << 'EOF'
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#!/bin/bash
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set -e
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# Default values
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FIRMWARE=${FIRMWARE:-/workspace/firmware.bin}
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MACHINE=${MACHINE:-esp32}
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FLASH_SIZE=${FLASH_SIZE:-4}
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TIMEOUT=${TIMEOUT:-30}
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# Select ROM based on machine type
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case "$MACHINE" in
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esp32) ROM_FILE=/opt/esp-rom/esp32-v3-rom.bin ;;
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esp32c3) ROM_FILE=/opt/esp-rom/esp32c3-rom.bin ;;
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esp32s2) ROM_FILE=/opt/esp-rom/esp32s2-rom.bin ;;
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esp32s3) ROM_FILE=/opt/esp-rom/esp32s3-rom.bin ;;
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*) echo "Unknown machine: $MACHINE"; exit 1 ;;
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esac
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# Check if firmware exists
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if [ ! -f "$FIRMWARE" ]; then
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echo "ERROR: Firmware not found: $FIRMWARE"
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exit 1
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fi
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# Create flash image
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FLASH_IMG=/tmp/flash.bin
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dd if=/dev/zero of=$FLASH_IMG bs=1M count=$FLASH_SIZE 2>/dev/null
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dd if=$FIRMWARE of=$FLASH_IMG bs=1 seek=$((0x10000)) conv=notrunc 2>/dev/null
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# Run QEMU with timeout
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timeout $TIMEOUT qemu-system-xtensa \
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-nographic \
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-machine $MACHINE \
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-bios $ROM_FILE \
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-drive file=$FLASH_IMG,if=mtd,format=raw \
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-global driver=timer.esp32.timg,property=wdt_disable,value=true \
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"$@"
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EOF
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RUN chmod +x /entrypoint.sh
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# Set entrypoint
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ENTRYPOINT ["/entrypoint.sh"]
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# Labels
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LABEL maintainer="FastLED Team"
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LABEL description="Lightweight ESP32 QEMU Docker image"
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LABEL version="1.0.0" |