DOC & CWlinux SDK

[Bob Drzyzgula]

I'm just now finally able to get back to a project that I
started a few months ago, and I have a couple of questions.
First, though, I want to offer great thanks to Andrew and
CWlinux for their SDK. That stuff really is a tremendous
help.

First, DOC problems. I've spent about a day and a half
getting an M810LMR up and running off a DOC, using one
of CWlinux's images. Part of my problem turned out to
be some flaky DOCs. Of four units I took out of a tube,
two of them have turned out to have faulty sectors, from
what I can tell. After futzing around, I finally came
to the realization that I could not even get eraseall to
work -- it would repeatedly give an MTD erase failure [1]
error. It would fail at the same address every time, but
that address was different for the two DOCs. The other two
DOCs had no such problem. I guess that my main questions
here are (a) are these DOCs toast, and (b) is this common
with DOCs? These are labeled "MD-2800-D08/JAPAN0028HAK 1".

The other issue I had was with regard to the CWlinux
DOC images; I don't think this is a question so much as
an FYI for Andrew and maybe other newbies, I was able to
work around things and I'll be moving beyond his examples
soon anyway.

In cwlinux_810lmr_lite.lb, the size of the minix filesystem
appears to be larger than the size of the nftl partition
on the DOC [2].  This is confirmed with a error when I run
the dd to write the filesystem to flash. The filesystem in
the cwlinux_810lmr_mb-mii.lb image is small enough to fit,
however [3]. Finally, when I use the docipl, linux.bin.gz.block,
and linuxbios.block from cwlinux_810lmr_mb-mii.lb, the
linux commandline gives me consoles on /dev/ttyS0 and /dev/tty0.
The one on ttyS0 works fine, but the one on tty0 has
carriage return issues; the virtual console on tty1 also
works OK. If I use the docipl, linux.bin.gz.block,
and linuxbios.block from cwlinux_810lmr_lite.lb but the
minix filesystem from cwlinux_810lmr_mb-mii.lb, the
command line gives me a console only on /dev/tty5 and
there's a GUI splash screen. In this case, the virtual
consoles, including the one on tty0, work just fine. 
This has worked out to be the best combination.

Thanks,
--Bob

[1] (with defective DOC in socket)

[root at linuxbios cwlinux_810lmr_lite.lb]# lsmod
Module                  Size  Used by    Tainted: P
binfmt_misc             6980   1
autofs                 11396   0  (autoclean) (unused)
sis900                 15012   1
ipchains               37992  10
ide-cd                 30368   0  (autoclean)
cdrom                  31168   0  (autoclean) [ide-cd]
ext3                   66464   4  (autoclean)
jbd                    52672   4  (autoclean) [ext3]
md                     62976   0  (unused)
usb-ohci               22016   0  (unused)
usbcore                69056   1  [usb-ohci]
[root at linuxbios cwlinux_810lmr_lite.lb]# flash_on
[root at linuxbios cwlinux_810lmr_lite.lb]# modprobe doc2000
[root at linuxbios cwlinux_810lmr_lite.lb]# modprobe docprobe
[root at linuxbios cwlinux_810lmr_lite.lb]# eraseall /dev/mtd0
Erasing 8 Kibyte @ 2c000 --  2 % complete.
eraseall: /dev/mtd0: MTD Erase failure: Input/output error
Erased 8192 Kibyte @ 0 -- 100% complete.
[root at linuxbios cwlinux_810lmr_lite.lb]# dmesg | tail -2
Ignoring DiskOnChip 2000 at 0xFFFEE000 - already configured
Error erasing at 0x2c000

[2] (with good DOC in socket)

[root at linuxbios cwlinux_810lmr_lite.lb]# sfdisk -l -uS /dev/nftla

Disk /dev/nftla: 1019 cylinders, 14 heads, 1 sectors/track
Units = sectors of 512 bytes, counting from 0

   Device Boot    Start       End  #sectors  Id  System
/dev/nftla1             1     14265     14265  83  Linux
/dev/nftla2             0         -         0   0  Empty
/dev/nftla3             0         -         0   0  Empty
/dev/nftla4             0         -         0   0  Empty
[root at linuxbios cwlinux_810lmr_lite.lb]# expr 14265 \* 512
7303680
[root at linuxbios cwlinux_810lmr_lite.lb]# ls -l data/*minix
-rw-r--r--    1 root     root      7307264 May  3 13:21 data/rootfs.minix
[root at linuxbios cwlinux_810lmr_lite.lb]# cat config/*
# partition table of /dev/nftla
unit: sectors

/dev/nftla1 : start=        1, size=   14265, Id=83
/dev/nftla2 : start=        0, size=       0, Id= 0
/dev/nftla3 : start=        0, size=       0, Id= 0
/dev/nftla4 : start=        0, size=       0, Id= 0

[3]

[root at linuxbios cwlinux_810lmr_lite.lb]# ls -l ../cwlinux_810lmr_mb-mii.lb/data/*minix
-rw-r--r--    1 root     root      7303168 Sep  6 07:53 ../cwlinux_810lmr_mb-mii.lb/data/rootfs.minix