Re: Xilinx BSP for linux 2.6

Dear Ameet,
It Works now! By creating these character and block devices in /dev, the 
system go further now. But another problem appears. That is, there is no 
login prompt shown in hyper terminal. The information is listed as:

[    1.745076] loop: loaded (max 8 devices)
[    1.793385]  xsa: xsa1 xsa2 xsa3
[    1.839258] mice: PS/2 mouse device common for all mice
[    1.925011] VFS: Mounted root (ext2 filesystem) readonly.
[    1.990035] Freeing unused kernel memory: 76k init

Welcome to ML403 powerpc linux 2.6.16-rc5, E.I.S. edition

Starting system...
mounting /proc: done.
Mounting '/' read-write: mount: Cannot read /etc/mtab: No such file or 
directory

done.
brining up loopback interface: ifconfig: socket: Function not implemented
done.
Mounting /tmp: done.
Starting syslogd: done.
Starting klogd: syslogd: Couldn't get file descriptor for socket /dev/log: 
Funct
ion not implemented
done.
Starting inetd: done.
System started.

My inittab files looks like:
::sysinit:/etc/init.d/rcS
#::askfirst:-/bin/sh
::ctrlaltdel:/sbin/reboot
::shutdown:/sbin/swapoff -a
::shutdown:/bin/umount -a -r
::restart:/sbin/init
::respawn:/sbin/getty 9600 tts/0

Any suggestion about this problem? Thanks in advance.

Regards
Ming

From: Ameet Patil <redacted>
To: Ming Liu <redacted>
CC: linuxppc-embedded@ozlabs.org
Subject: Re: Xilinx BSP for linux 2.6
Date: Fri, 07 Jul 2006 13:42:42 +0100

Hi Ming,

Excellent News!

Don't worry... the problem you are facing could be because of missing
device files in your /dev folder.

Do as follows:
mount the CF card onto your PC and then goto the /dev folder on your
root filesystem in the card. Here run the following commands as root:
# mknod -m 660 console c 5 1
# mknod -m 660 xsa b 254 0
# mknod -m 660 xsa1 b 254 1
# mknod -m 660 xsa2 b 254 2
# mknod -m 660 xsa3 b 254 3
Now there should be a directory tts in your dev. If not create one
"mkdir tts". Then do this in the dev/tts folder,
# mknod -m 660 0 b 4 64

quoted

Also, when I compile the kernel, there is a error. That's in adapter.c
file, undefined reference to "XAssert". I checked the source code and

I think you have the old patch. If you download the new one, the
compilation problem should not occur. But you resolved it yourself,...
which is good.

Let me know if this works. I shall add this stuff in PART II of the 

article.

-Ameet

Ming Liu wrote:

quoted

Dear Ameet,
A good news is that now my 2.6 kernel is running in my ML403 board!
According your guidance, first I made the kernel as simple as possible
and it works well. Then I included the patch for SystemACE and here is
the information shown on the hyper teminal:


Linux/PPC load: console=ttyS0,9600 root=/dev/xsa3 [    0.000148]
Console: colour dummy device 80x25
[    0.000919] Dentry cache hash table entries: 16384 (order: 4, 65536
bytes)
[    0.002277] Inode-cache hash table entries: 8192 (order: 3, 32768 

bytes)

quoted

[    0.012802] Memory: 63104k available (1340k kernel code, 384k data,
76k init,
0k highmem)
[    0.230310] Mount-cache hash table entries: 512
[    0.238305] VFS: Disk quotas dquot_6.5.1
[    0.238516] Dquot-cache hash table entries: 1024 (order 0, 4096 

bytes)

quoted

[    0.238817] JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc.
[    0.239435] JFS: nTxBlock = 493, nTxLock = 3944
[    0.241883] Initializing Cryptographic API
[    0.241940] io scheduler noop registered (default)
[    0.322864] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ
sharing
disabled
[    0.324759] serial8250.0: ttyS0 at MMIO 0x40401003 (irq = 1) is a 

16550A

quoted

[    1.653644] RAMDISK driver initialized: 16 RAM disks of 65536K size
1024 bloc
ksize
[    1.745079] loop: loaded (max 8 devices)
[    1.793392]  xsa: xsa1 xsa2 xsa3
[    1.839262] mice: PS/2 mouse device common for all mice
[    1.935059] VFS: Mounted root (ext2 filesystem) readonly.
[    2.000037] Freeing unused kernel memory: 76k init
[    2.075656] Warning: unable to open an initial console.

I use xsa3 as the partition to store the file system. Now the file
system is the old one for my 2.4 kernel generated by busybox. Then I
think that's why the problem "unable to open an initial console" is
generated. Do you have some suggestion on how to solve it? Thanks for
your opinion.
Also, when I compile the kernel, there is a error. That's in adapter.c
file, undefined reference to "XAssert". I checked the source code and
found that the function of XAssert is defined in the file
xbasic_types.c, not the xbasic_types.h. So it cannot be included into
adapter.c. And also in the makefile there is no dependency on
xbasic_types.c. So I added the defination for this function in
adapter.c, copying it from xbasic_types.c. It then worked well.
Waiting for your guidance. You know, an expert's opinion is always
useful for a novice, like me. :)

Regards
Ming

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