How uboot can be written over NOR Flash using UART

adityanagal — Fri, 07 Apr 2017 11:48:11 GMT

Hi ,

I am working over the IMX6 solo which is interfaced with serial NOR Flash. As per the Reference Manual , Table 8-1 ,

Serial Downloader mode can be used for firmware flashing. But Serial Downloader mode requires serial USB. In my target board USB board is not populated. My questions are as follows :

1. Can I flash uboot using debug UART ? if yes then please explain how .

2 . In which mode IMX6 will boot up to write the NOR Flash using UART.

Please suggest.

Regards,

Aditya Nagal

Re: How uboot can be written over NOR Flash using UART

weidong_sun — Fri, 07 Apr 2017 12:52:52 GMT

Hello Aditya,

>>1. Can I flash uboot using debug UART ? if yes then please explain how .

No, you can't.

>>2 . In which mode IMX6 will boot up to write the NOR Flash using UART.

I.MX6 doesn't support downloading uboot by UART port.

There are 2 ways to write u-boot to your nor flash:

(1) writing u-boot to NOR Flash by USB OTG port.

You had better populate USB OTG connector to your board, it is very important, I don't know why not populate it.

(2) Using SD card to boot your system, then write u-boot image to Nor Flash.

Hope above advice can help you!

Best Regards,

Weidong

topic How uboot can be written over NOR Flash using UART in i.MX Processors

How uboot can be written over NOR Flash using UART

Re: How uboot can be written over NOR Flash using UART