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U-Boot port for expressif ESP_WROVER_KIT

Posted: Mon Feb 11, 2019 7:39 am
by benvinkorea
Is there any port of U-Boot on ESP WROVER KIT?

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

Re: U-Boot port for expressif ESP_WROVER_KIT

Posted: Mon Feb 11, 2019 11:02 am
by ESP_igrr
There isn't, to my knowledge.

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

Re: U-Boot port for expressif ESP_WROVER_KIT

Posted: Tue Feb 12, 2019 1:52 am
by benvinkorea
To update OS and firmware.

Re: U-Boot port for expressif ESP_WROVER_KIT

Posted: Tue Feb 12, 2019 3:37 am
by 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

Re: U-Boot port for expressif ESP_WROVER_KIT

Posted: Tue Feb 12, 2019 4:13 am
by benvinkorea
Yes, to interrupt normal boot and update firmware/OS, but NOT necessarily through UART.

Re: U-Boot port for expressif ESP_WROVER_KIT

Posted: Tue Feb 12, 2019 4:56 am
by 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.