Trying to run Micropython on esp32s3 QEMU

[jackland]

Hi,

This maybe a daft idea, but I'm trying to run Micropython on qemu-system-xtensa with machine esp32s3 so I can experiment with NVS encryption on secure boot without risking bricking actual devices by burning the wrong fuses on physical devices.

The emulation starts but, according to gdb, gets stuck at line 250 in esp-idf/components/esp_system/port/cpu_start.c, which seems to be waiting for core 1 to start (please see below). I've tried various things including configuring FreeRTOS to Unicore in the build, but it always gets stuck here.

The version of qemu is from esp_develop_9.0.0_20240606.

Can anyone help please?

Thanks

Bob

242 #if (CONFIG_IDF_TARGET_ESP32 && CONFIG_ESP32_TRAX_TWOBANKS) || \
243 (CONFIG_IDF_TARGET_ESP32S3 && CONFIG_ESP32S3_TRAX_TWOBANKS)
244 trax_start_trace(TRAX_DOWNCOUNT_WORDS);
245 #endif
246
247 s_cpu_inited[1] = true;
248
249 while (!s_resume_cores) {
250 esp_rom_delay_us(100);
251 }
252
253 SYS_STARTUP_FN();
254 }