U-Boot port for expressif ESP_WROVER_KIT

[benvinkorea]

Is there any port of U-Boot on ESP WROVER KIT?

If not, how to get help from espressif to do this?

[ESP_igrr]

There isn't, to my knowledge.

What is the goal you are trying to achieve by having a uboot port?

[benvinkorea]

To update OS and firmware.

[WiFive]

I would guess more specifically he wants an interactive 2nd stage bootloader that would allow you to interrupt normal boot and update the firmware over uart without having to enter 1st stage bootloader download mode

[benvinkorea]

Yes, to interrupt normal boot and update firmware/OS, but NOT necessarily through UART.

[ESP_igrr]

I think you can use the "boot to factory app" feature of ESP-IDF 2nd stage bootloader. The factory app can then be an interactive app which will handle console commands and update other partitions.