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doc(esp32-qemu): update chip revision and bootloader

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Marco Casaroli 2024-09-18 18:55:59 +02:00 • committed by Xiang Xiao
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commit 757c312ea3
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15
Documentation/platforms/xtensa/esp32/index.rst
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@ -627,25 +627,30 @@ Please check for usage examples using the :doc:`ESP32 DevKitC </platforms/xtensa
Using QEMU
==========
First follow the instructions `here <https://github.com/espressif/qemu/wiki>`__ to build QEMU.
Get or build QEMU from `here <https://github.com/espressif/qemu/wiki>`__.
Enable the ``ESP32_QEMU_IMAGE`` config found in :menuselection:`Board Selection --> ESP32 binary image for QEMU`.
Download the bootloader and the partition table from https://github.com/espressif/esp-nuttx-bootloader/releases
and place them in a directory, say ``../esp-bins``.
Enable ``ESP32_APP_FORMAT_LEGACY``.
Build and generate the QEMU image::
$ make ESPTOOL_BINDIR=../esp-bins
$ make bootloader
$ make ESPTOOL_BINDIR=.
A QEMU-compatible ``nuttx.merged.bin`` binary image will be created. It can be run as::
$ qemu-system-xtensa -nographic -machine esp32 -drive file=nuttx.merged.bin,if=mtd,format=raw
QEMU for ESP32 does not correctly define the chip revision as v3.0 so you have two options:
- #define ``ESP32_IGNORE_CHIP_REVISION_CHECK`` in ``arch/xtensa/src/esp32/esp32_start.c``
- Emulate the efuse as described `here <https://github.com/espressif/esp-toolchain-docs/blob/main/qemu/esp32/README.md#emulating-esp32-eco3>`__.
QEMU Networking
---------------
Networking is possible using the openeth MAC driver. Enable ``ESP32_OPENETH`` option and set the nic in QEMU:
Networking is possible using the openeth MAC driver. Enable ``ESP32_OPENETH`` option and set the nic in QEMU::
$ qemu-system-xtensa -nographic -machine esp32 -drive file=nuttx.merged.bin,if=mtd,format=raw -nic user,model=open_eth