Re: [microblaze-uclinux] No ROM/FLASH Board

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Bruno,

Bruno Herrera wrote:

> I'm finishing a port of uCLinux to a Celoxica board that I do not have
> direct acess to a Rom/Flash memory. In fact I only have access to it
> thru on CPLD, so I discarded it from may BSP.

> devfs: v1.12c (20020818) Richard Gooch (rgooch@xxxxxxxxxxxxx)
> devfs: devfs_debug: 0x0
> devfs: boot_options: 0x1
> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
> uclinux[mtd]: RAM probe address=0xff0be8d0 size=0x71000
> mtd: Giving out device 0 to RAM
> uclinux[mtd]: root filesystem index=0
> *******
> VFS: test name = </dev/root>
> VFS: fs_name = <ext2>
> VFS: fs_name = <romfs>
> VFS: root name <1f:00>
> *******
> VFS: tried fs_name = <ext2> err= -2
> VFS: Cannot open root device "" or 1f:00
> Please append a correct "root=" boot option
> Kernel panic: VFS: Unable to mount root fs on 1f:00

Do you have a correct (and populated) /dev subdir in your root 
filesystem image?  I see you are using devfs - this couold be relevant. 
 In the first instance you are probably better using a default uclinux 
approach, which is not devfs but rather use the standard mechanisms in 
the vendors/XXX/YYY makefiles to generate the /dev/* devnodes.

In particular, you'll need /dev/mtdblock0 as the backing device for your 
root filesystem.

Regards,

John
___________________________
microblaze-uclinux mailing list
microblaze-uclinux@xxxxxxxxxxxxxx
Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/