U-Boot port for expressif ESP_WROVER_KIT

benvinkorea
Posts: 8
Joined: Mon Jan 28, 2019 8:06 am

U-Boot port for expressif ESP_WROVER_KIT

Postby benvinkorea » Mon Feb 11, 2019 7:39 am

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

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

ESP_igrr
Posts: 1439
Joined: Tue Dec 01, 2015 8:37 am

Re: U-Boot port for expressif ESP_WROVER_KIT

Postby ESP_igrr » Mon Feb 11, 2019 11:02 am

There isn't, to my knowledge.

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

benvinkorea
Posts: 8
Joined: Mon Jan 28, 2019 8:06 am

Re: U-Boot port for expressif ESP_WROVER_KIT

Postby benvinkorea » Tue Feb 12, 2019 1:52 am

To update OS and firmware.

WiFive
Posts: 2216
Joined: Tue Dec 01, 2015 7:35 am

Re: U-Boot port for expressif ESP_WROVER_KIT

Postby WiFive » Tue Feb 12, 2019 3:37 am

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
Posts: 8
Joined: Mon Jan 28, 2019 8:06 am

Re: U-Boot port for expressif ESP_WROVER_KIT

Postby benvinkorea » Tue Feb 12, 2019 4:13 am

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

ESP_igrr
Posts: 1439
Joined: Tue Dec 01, 2015 8:37 am

Re: U-Boot port for expressif ESP_WROVER_KIT

Postby ESP_igrr » Tue Feb 12, 2019 4:56 am

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.

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