topic Re: Copy file from USB storage to eMMC at U-Boot in i.MX Processors

Copy file from USB storage to eMMC at U-Boot

devendradevadi1 — Tue, 06 Nov 2018 09:50:34 GMT

Hi,

I had inbuilt eMMC in my board. I am using i.MX6UL platform.

I want to partition my inbuilt eMMC and I want to copy files from USB storage to eMMC at U-Boot prompt. Can you explain what command I can use.

If you provided the script it is more helpful.

Re: Copy file from USB storage to eMMC at U-Boot

jimmychan — Fri, 09 Nov 2018 06:05:09 GMT

there is no filesystem in u-boot. so there is no command to copy files from USB storage to EMMC.

Re: Copy file from USB storage to eMMC at U-Boot

devendradevadi1 — Tue, 13 Nov 2018 05:42:05 GMT

Thank you for your reply.

@there is no filesystem in u-boot.

From the U-boot Quick reference manual I found that, the command "fatload" is used to load binary file from a dos filesystem. I know how to use /load the files from eMMC if the eMMC is in DOS partition.

"there is no filesystem in u-boot." means ?

Can I use "fatload" command for USB storage also if the USB storage is in fat format?

@so there is no command to copy files from USB storage to EMMC.

Then how I can make use of USB storage at U-boot level?

Re: Copy file from USB storage to eMMC at U-Boot

devendradevadi1 — Tue, 13 Nov 2018 06:27:43 GMT

Hi,

I can able to use the file/binary from USB storage and eMMC both using fatload command.

fatload usb 0 addredd1 filename - Use/Load the file from USB storage to Memory

fatload mmc 0 address2 filename - Use/Load the file from eMMC to Memory.

Above command works.

But my requirement is, I need to copy a binary file from USB storage to eMMC. I need to copy binary file from memory to eMMC which is already copied to memory by USB.

Here what addresses I can use? How I can came to know what range of addresses I can use for this general purpose operation (write/read)?

Re: Copy file from USB storage to eMMC at U-Boot

jimmychan — Fri, 16 Nov 2018 02:40:36 GMT

I think there is no command for saving/writing the data to a file to store in eMMC. You may modify the u-boot source code to add this command.

Re: Copy file from USB storage to eMMC at U-Boot

rahul44 — Sun, 07 Mar 2021 13:19:30 GMT

Hi Jimmychan,

Is there any command to read uboot from emmc? I am loading uboot from USB and we have requirement to read uboot file from emmc. As uboot does not has file system can we make use of mmc read/write command ?

Please try to answer this question.

Thanks