topic Re: Is it possible to mount u-boot.imx? in i.MX Processors

Is it possible to mount u-boot.imx?

rahul44 — Sat, 06 Mar 2021 11:26:52 GMT

Hi,

I have flashed u-boot.imx in emmc keeping 0x400 as offset. Now I want to read u-boot.imx from another uboot (loaded from USB). It is not showing up in any of the existing partition. Tried mounting "/dev/${EMMC_DEV}boot0" with no success.

Thanks

Re: Is it possible to mount u-boot.imx?

b36401 — Wed, 10 Mar 2021 04:31:15 GMT

u-boot.imx is placed on eMMC in raw blocks, not over the filesystem.
You can use something like "hexdump -C /dev/mmcblk0boot0 | less" to see it and "dd" to get it as a file.

Re: Is it possible to mount u-boot.imx?

rahul44 — Thu, 11 Mar 2021 12:41:00 GMT

I don't have this partition /dev/mmcblk0boot0 mounted. Tried below command to mount but gave error. Can you correct it?

/sbin/mkfs.vfat -n boot /dev/${EMMC_DEV}boot0 && mkdir -pv /mnt/storage && mount /dev/${EMMC_DEV}boot0 /mnt/storage && sleep 1 && sync && umount /mnt/storage" "${UBOOT_BIN}

Re: Is it possible to mount u-boot.imx?

b36401 — Wed, 17 Mar 2021 06:46:18 GMT

It looks strange. There should be /dev/mmcblk0boot0 partition.

Which way you burned the image?

Re: Is it possible to mount u-boot.imx?

rahul44 — Wed, 17 Mar 2021 06:57:40 GMT

This partition is not showing in kernel.

Re: Is it possible to mount u-boot.imx?

rahul44 — Wed, 17 Mar 2021 06:59:16 GMT

Used below command to flash uboot.

dd if=/dev/zero of=/dev/${EMMC_DEV}boot0 bs=1024 count=510 seek=1

Re: Is it possible to mount u-boot.imx?

b36401 — Fri, 19 Mar 2021 05:42:59 GMT

You can refer to chapter "Booting Linux OS" of i.MX Linux User Guide:
https://www.nxp.com/docs/en/user-guide/IMX_LINUX_USERS_GUIDE.pdf