booting 2.6 kernel on ML403

[John Bonesio]

Hi Pradeep,

 

If you are using the MontaVista/Xilinx driver for sysace for linux 2.6, the CONFIG_CMDLINE item in .config should have

    root=/dev/xsysace2 rw

in it. From the text below it's not clear what driver you are using. If you are using a different driver, you may be able to search for

    #define MAJOR_NAME

in the source code of the sysace driver. I believe that will indicate which device name you should use in the CONFIG_CMDLINE.

 

As you probably already know, the '2' in '/dev/xsysace2' refers to the partition number it should use - partition 2 in this case.

 

For Problem 2: Do you see any error leds light up on the board? It's possible that the drivers you are using for one or both of those cores is not meant for the version of the cores you are using. The core most likely to be suspect is the TEMAC soft core, as that has changed recently. Even though you are using the hard TEMAC core, there is a soft wrapper around it to connect it up to the bus and what not. This soft wrapper has changed from version 2 to version 3 not too long ago. While the TEMAC driver that MontaVista has (and I believe posted to this mailing list) is for version 2 of the soft TEMAC core.

 

Hope this helps,

 

- John

 

________________________________

From: linuxppc-embedded-bounces+jbonesio=xilinx.com at ozlabs.org [mailto:linuxppc-embedded-bounces+jbonesio=xilinx.com at ozlabs.org] On Behalf Of Pradeep Sampath
Sent: Wednesday, October 04, 2006 10:35 AM
To: Ming Liu; ammubhai at gmail.com
Cc: linuxppc-embedded at ozlabs.org
Subject: Re: booting 2.6 kernel on ML403

 

Hello Ameet/Ming,

 

First of all really appreciate your inputs on this... 

Problem 1 :

I was using the factory shipped compact flash as is which comes with a DOS FAT16 partition and a linux 83 partition with ext3 filesystem. I tried it on 2 factory shipped CFs and its the same behavior - . When i plug-in the CF card reader to the linux box it always reads it as "sda" and in the linux2.6.17.1/Documentation/devices.txt - sda is the device file for SCSI disk devices. Wonerding how you guys configured the root option as "/dev/xsa".

 

Now i re-formatted my CF, created a ext2 filesystem using busybox-1.1.0 like the BYU instructions. Created 2 partitions on CF card 1. FAT16 partition & 2. linux partition and then created 1. dos file system using mkdosfs and 2. linux ext2 filesystem using mke2fs.

 

But the problem still persists and i get "Please append a correct "root=" boot option :"

:(

 

Problem 2: After i included the TEMAC driver and sysace drivers, the kernel just hangs. I thought i'll fix problem 1 before i get to problem 2... 

 

With your help i am getting the confidence that i can make this all work!

thanks once again.

-Pradeep



Ming Liu <eemingliu at hotmail.com> wrote:

	Hello Ameet,
	I am using that driver very well now. There is only one problem. It seems 
	that the driver for TEMAC only support Gigabit Enet, not 10/100/1000M 
	adapted. But because I want to use the Gigabit enet, I don't care that. So 
	it's OK, at lease for 1Gbit/s.
	
	So I don't think Pradeep's problem is caused by Temac. I still suspect that 
	he didn't pass a right parameter to "root=", just like what I posted 
	before.
	
	Regards
	Ming
	
	
	>From: Ameet Patil 
	>To: Ming Liu 
	>CC: pradeepsampath at yahoo.com, linuxppc-embedded at ozlabs.org
	>Subject: Re: booting 2.6 kernel on ML403
	>Date: Wed, 04 Oct 2006 09:35:07 +0100
	>
	>Ming Liu wrote:
	> > Hi,
	> >
	> >> [ 3.093694] TCP bic registered
	> >> [ 3.129458] NET: Registered protocol family 8
	> >> [ 3.181412] NET: Registered protocol family 20
	> >> [ 3.236744] VFS: Cannot open root device "xsa2" or unknown-block(0,0)
	> >> [ 3.313092] Please append a correct "root=" boot option
	> >
	> > It looks that some errors still exist in the parameters you passed to
	> > "root=". Please double check it, or post it in the maillist for deep
	> > analysis.
	> > Regards
	> > Ming
	> >
	> > _________________________________________________________________
	> > ÏíÓÃÊÀ½çÉÏ×î´óµÄµç×ÓÓʼþϵͳ¡ª MSN Hotmail¡£ http://www.hotmail.com
	> > 
	------------------------------------------------------------------------
	> >
	> > _______________________________________________
	> > Linuxppc-embedded mailing list
	> > Linuxppc-embedded at ozlabs.org
	> > https://ozlabs.org/mailman/listinfo/linuxppc-embedded
	>Hi Ming,
	>IIRC, you are or were using the TEMAC driver along with my System Ace
	>driver, isn't it? Does my driver patch ***-after-TEMAC.patch work for
	>you? I ask this because Pradeep is having some problems using it (see
	>Problem 2 in his email). Could you please update on this?
	>
	>Thanks,
	>-Ameet
	
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