imx6ul burned the rootfs.sdcard file into emmc failed by using uuu

[ida_jiang]

Hello ,

     I'm leanring the imx6ulevk and using the L4.14.98ga. I wanted to burn the u-boot and rootfs.sdcard into eMMC, but it failed. I don't how deal with it. I used the uuu according to the reference -- i.MX Linux User's Guide. 

① The serial download mode is as follows:

SW601       ON    OFF

SW602       ON    OFF   OFF   OFF

② When I plug in the USB port, it would show the choose of accessing ubuntu. But when I used uuu to burn, the hint showed again.

③ The Ubuntu interface is shown below：

[AldoG]

Hello,

On the imx6ul EVK the eMMC is not populated, if you want to test the EVK, insert the MicroSD card into socket J301 on the CPU board (700-28617), configure switch SW602 to serial downloader, plug in USB and then you can run this command:

$ sudo ./uuu -b sd_all <bootloader> <rootfs>.sdcard

It will flash the whole Linux image to the MicroSD card.

Hope this helps,

Best regards,

Aldo.

[ida_jiang]

Hello,

     Thank you very much for your reply to my questions.

     And I have ever had the same view. But when I looked log like the picture as follows, I confused. If  the eMMC is not populated, why could it success ? It even could boot the u-boot but not find the kernel obiviously. This is my previous attempt and I couldn't show it again. I burned it with no sdcard inserted. Did I burn it to other memory ? Looking forward to your reply.

[AldoG · Accepted solution]

Hello,

When you run the tool by using the following command:

$ sudo ./uuu <bootloader>

It will only download uboot to the internal RAM it isn't burnt on the eMMC or SD.

For example if you want to burn only uboot into the eMMC you'll need to use this command:

$ sudo ./uuu -b emmc <bootloader>

That in this case it will fail as it did in your previous attempt due to the absence of the eMMC.

Hope this helps,

Best regards,

Aldo.

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[ida_jiang]

Hello ,

     I think I have got it. I really appreciate your help. And thank you again.  (^.^)

[AldoG]

Hi,

Glad to help you

Regards,

Aldo.