Dear Wolfgang,
Seems that a little much infos about background will be a good thing :-)
The idea is to provide an update / restore mechanism from U-boot.
he NAND is formatted as follow: * U-Boot Partition * Images Partition (YAFFS2) (Kernel, RootFS as tgz, FPGA / DSP Firmwares). * Linux RootFS (YAFFS2)
To update "Linux", the way we imagine is this one: 1. write a new kernel and rootFS in the "Images" partition (get the files through TFTP) 2. u-boot erase the old rootFS and "install" the newer 3. Boot Linux with the newer kernel
But why from U-Boot ? :-) -> To provide a robust update mechanism. -> equals what happens with Linux (through end-user), u-boot will "always" start.
So, I'm looking to clarify the step 2. What is missing ? Ideally, something like this: yrdm /images/my_newer_rootfs.tgz my_ram_address yunzip my_ram_address /rootfs/
The patch's I means are: http://lists.denx.de/pipermail/u-boot/2008-September/040910.html http://lists.denx.de/pipermail/u-boot/2006-September/016867.html
So, what do you think ? Sense or no sense ? Is it a way to achieve this from u-boot ?
Regards David
-----Original Message----- From: Wolfgang Denk [mailto:wd@denx.de] Sent: Samstag, 26. Juni 2010 00:02 To: David Andrey Cc: u-boot@lists.denx.de Subject: Re: [U-Boot] Updating YAFFS2 RootFS
Dear "David Andrey",
In message 1OS8pe-0000df-Uh@wolf.netmodule.com you wrote:
I'm looking to update the linux yaffs2 rootfs from U-Boot (2009-06).
The
whole update will be:
Are you positively sure you have to do this in U-Boot? Keep in mind that U-Boot is a boot loader, so don't throw tasks on it that require an operating system.
Take the rootfs.tgz from the yaffs2 "image" partition (ok,with yrdm / ywrm) for update or restore purposes.
OK - but... what for?
Unpack it (maybe gunzip)
Why? And: why in U-Boot?
Update the Linux YAFFS2 RootFS (how ?)
Just write a new image to another, alternative partition.
After a quick search (mail list, code) seems that:
No native support for this operation in u-boot.
What exactly is "this operation" here, which you are missing support for?
Some "user" patch files exists (out of date ?)
Which sort of patches are you referring to?
Is the situation really like that ?
Sorry, I don;t undewrstand what exactly you mean by "the situation" ?
Which is the actual patch file ?
What do you mean?
What about the future for YAFFS2 in U-Boot ? Is there anyupdate planned ?
YAFFS2 is supported in mainline U-Boot. What exactly do you think is missing?
Best regards,
Wolfgang Denk