topic using initrd or initramfs on imx28evk for temp rootfs in i.MX Processors

using initrd or initramfs on imx28evk for temp rootfs

blsousan — Tue, 11 Sep 2012 21:21:20 GMT

Has anyone used initrd or initramfs on the imx28evk for a rootfs in memory? Or use them with u-boot? I need the ability to do have a small temp rootfs to assist in mounting a full rootfs from a USB stick (for field upgrade purposes).

Thanks,

Bill

Re: using initrd or initramfs on imx28evk for temp rootfs

Gatts — Mon, 29 Oct 2012 16:58:45 GMT

I am in the same boat.. Did you make it work?. If yes, please let me know the detailed instructions.

Re: using initrd or initramfs on imx28evk for temp rootfs

YixingKong — Fri, 14 Feb 2014 08:53:21 GMT

Bill

We are sorry for getting back to you so late. Are you still stuck with the issue? If you have somehow to resolved the

issue, can we close the discussion? If you still need Freescale help, please feel free to contact us.

Thanks,

Yixing

Re: using initrd or initramfs on imx28evk for temp rootfs

sensaurabh — Thu, 20 Feb 2014 22:16:51 GMT

Hi, I would like to know this too. Any updates?

Re: using initrd or initramfs on imx28evk for temp rootfs

MarekVasut — Sat, 22 Feb 2014 00:22:30 GMT

As for initrd , sure , the bootm command in U-Boot takes up to three arguments:

bootm <kernel uImage address> <initrd address> <FDT blob address>

So if you want your initrd to be passed to kernel , just supply the second argument.

Of course, you can also use initramfs and build the ramdisk into the kernel image if needed be. That's possible if you run 'make menuconfig' in the kernel source tree, navigate into 'General setup' -> 'Init RAM filesystem and RAM disk...' , check it and put path to your initramfs root dir into 'Initramfs source file(s)' . Note that if you have any /dev/ nodes in your initramfs's /dev/ , you might want to read Documentation/filesystems/ramfs-rootfs-initramfs.txt (you might want to read that anyway) section 'Populating initramfs' ...

Re: using initrd or initramfs on imx28evk for temp rootfs

YixingKong — Mon, 24 Feb 2014 03:27:26 GMT

Bill

It seems that someone has answered the question. I will close the discussion. If you still have question, please reopen the DI or create another DI.

Regards,

Yixing