Hi,
thanks for your answer.
When compiling, romfs.img appears in the uClinux/uClinux-dist/images.
As you suggested, I have tried rdev but it is available only for i386
architectures (which I don't have, a new embedded processor).
The romfs is loaded into memory (this is done at a known address 0x12000).
How does the kernel be aware about this romfs, I mean how does the
kernel point to this location?
Does the command line argument is involved during this procedure?
Thanks in advance for your suggestions.
For our processor:
www.cortus.com
Michael Blizek a écrit :
Hi!
On 11:35 Fri 19 Dec , Stephane Lambert wrote:
Hello all,
I am having a problem during boot concerning VFS (see the kernel output
below).
I have read several posts on this subject but I haven't been able to
find the information that I need.
(Note that I'm porting uClinux to a new architecture (The Cortus APS3
processor)).
Could someone point me to the appropriate docs or suggest how to
proceed, please ?
*******
VFS: test name = </dev/root>
VFS: fs_name = <ext2>
VFS: fs_name = <romfs>
VFS: tried fs_name = <ext2> err= -6
*******
interesting
VFS: Cannot open root device "<NULL>" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
Your kernel cannot mount the root file system. Please check:
- Does your kernel know the location of your root file system? (I do not know
whether this applies to your arch) Type "rdev YOUR_KERNEL_IMAGE". It shows
you where your kernel expects your root file system. If you have not changed
it, it is probably the block device which was the root device on the machine
which compiled the kernel at that time. If if does not equal the location
of the root file system on your embedded system, append it as a parameter,
e.g. root=/dev/sda2
- Do you have the file system compiled in?
- Do you have the block device driver compiled in?
- Is the file system mountable on your pc without errors?
-Michi
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