Xilinx_uartlite

[Jaap de Jong]

Hi Tom,

> Well, I never see that exact text, plus it's hard to tell much from
such a short snippet.  
> Could you provide a more complete transcript of your console output?

This is the output:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~
loaded at:     00400000 004C91E0
board data at: 004C6138 004C6150
relocated to:  004052D4 004052EC
zimage at:     004057F4 00453621
initrd at:     00454000 004C5747
avail ram:     004CA000 02000000

Linux/PPC load: root=/dev/ram
Uncompressing Linux...done.
Now booting the kernel
Linux version 2.4.20_mvl31-ml300 (jdj at jdj) (gcc version 3.3.3 (DENX ELDK
3.1.1 3
.3.3-10)) #25 Fri Dec 2 16:04:56 UTC 2005
Xilinx Virtex-II Pro port (C) 2002 MontaVista Software, Inc.
(source at mvista.com)
On node 0 totalpages: 8192
zone(0): 8192 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/ram
Xilinx INTC #0 at 0x41200000 mapped to 0xFDFFF000
Calibrating delay loop... 299.00 BogoMIPS
Memory: 31112k available (556k kernel code, 216k data, 36k init, 0k
highmem)
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
LSP Revision 22
ikconfig 0.5 with /proc/ikconfig
Starting kswapd
Disabling the Out Of Memory Killer
pty: 256 Unix98 ptys configured
xgpio #0 at 0x40000000 mapped to 0xC3000000
xgpio #1 at 0x40020000 mapped to 0xC3011000
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 453k freed
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 36k init
Warning: unable to open an initial
console.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~

And there it stops. 
I'm affraid it is related to something else though.
Sometimes it ends in:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~
EXT2-fs error (device ramdisk(1,0)): ext2_check_page: bad entry in
directory #12
: rec_len is smaller than minimal - offset=1024, inode=0, rec_len=0,
name_len=0
Kernel panic: No init found.  Try passing init= option to kernel.
 <0>Rebooting in 180 seconds..
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~

After a rebuild without any changes to my rootfilesystem!
How I make my image:

    dd if=/dev/zero of=ramdisk.image bs=1k count=4096
    mkfs.ext2 -F ramdisk.image
    mount -o loop ramdisk.image mnt

    sync; sync; sync; sync; sync; sync
    umount mnt
    fsck.ext2 -p ramdisk.image
    gzip -9 ramdisk.image

    make zImage.initrd


Somtimes it starts up till here:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~
init started:  BusyBox v0.60.5 (2005.12.01-00:25+0000) multi-call binary

Please press Enter to activate this console.


BusyBox v0.60.5 (2005.12.01-00:25+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

sh: can't access tty; job control turned off
# ls -l
Please press Enter to activate this
console.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~

But even then things are not good...

So you can think of corruption of the rootfs but everytime i have
checked it
on my linux system and nothing is wrong. 
So perhaps my memory is corrupt? Memory test do not reveal this.
If you have any hints or ideas, please share them!!

Best regards,
	Jaap.




-----Oorspronkelijk bericht-----
Van: T Ziomek [mailto:ctz001 at email.mot.com] 
Verzonden: zaterdag 3 december 2005 02:03
Aan: Jaap de Jong
CC: linuxppc-embedded
Onderwerp: RE: Xilinx_uartlite

On Thu, 1 Dec 2005, Jaap de Jong wrote:
>
> Thanks for your reply, but then I only get:
> 	Now booting the kernel

Well, I never see that exact text, plus it's hard to tell much from such
a short snippet.  Could you provide a more complete transcript of your
con- sole output?

-- 
   /"\  ASCII Ribbon Campaign   |
   \ /                          |   Email to user 'CTZ001'
    X        Against HTML       |             at 'email.mot.com'
   / \     in e-mail & news     |