2430 kernel,uboot and filesystem
Hi All,
Looking through some of the queries happening in the list, I had been playing around trying to use as little of the pre-build files as possible to do a 2430 boot up from scratch.
In the process of this, I decided to document all the steps I had done.. attached is a txt and pdf version of the same. I hope it will be useful to someone who is starting off on the board for the first time.
Most of the document was written with a sleepy eye, so please let me know if you find any bugs or ways to improve the document (the txt version is a generated file so it will lack the images of the pdf...). Regards,
Nishanth Menon
Help: OMAP5912 RS232 dies after kernel uncompressing.
Hello.
After I modified the environment by using setenv/saveenv I got the following problem.
The terminal connected to the OMAP5912 rs232 at 115200n8 is working as long as the kernel is uploaded and decompressing. The last message shown is ".booting."
After that message the rs232 line seems to be dead.
The kernel is mounting its root from nfs-server and is running normally except the console device could be used.
I tried several kernels (2.6.16/2.6.19) including the pre-build kernel 2.4 from the distribution CD All the same, the rs232 line dies after uncompressing the kernel.
My bootags setting are:
Bootargs = "mem=32 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw nfsroot=192.168.0.50:/nfsroot"
Has anybody an idea what I could do to get back my rs232 console ?
Regards
Juergen
RE: Help: OMAP5912 RS232 dies after kernel uncompressing.
Juergen,
Perhaps your NFS Share isn't set up correctly? I had that problem before I
had set up my NFS share with the right perms and whatnot. Maybe look into the particulars of the config file and make sure all is well. Try mounting the target NFS with another machine other than the board.
Hope this helps,
Andy
Quoted 34 lines
From: "Juergen Sievers" <[email protected]>
Reply-To: [email protected]
To: "'Linux OMAP List'" <[email protected]>
Subject: Help: OMAP5912 RS232 dies after kernel uncompressing.
Date: Mon, 15 Jan 2007 16:22:26 +0100Hello.
After I modified the environment by using setenv/saveenv I got the following problem.
The terminal connected to the OMAP5912 rs232 at 115200n8 is working as long as the kernel is uploaded and decompressing. The last message shown is ".booting."
After that message the rs232 line seems to be dead.
The kernel is mounting its root from nfs-server and is running normally except the console device could be used.
I tried several kernels (2.6.16/2.6.19) including the pre-build kernel 2.4 from the distribution CD All the same, the rs232 line dies after uncompressing the kernel.
My bootags setting are:
Bootargs = "mem=32 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw nfsroot=192.168.0.50:/nfsroot"
Has anybody an idea what I could do to get back my rs232 console ?
Regards
Quoted 7 lines
Juergen
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Re: Help: OMAP5912 RS232 dies after kernel uncompressing.
In reply to Juergen Sievershi Juergen,
please re-check that there is no gaps in the "console=ttyS0,115200n8". If you write "console=ttyS0,_115200n8", the rs232 connection seems to be dead. BR,
Liem Pham
Quoted 36 lines
Hello.
After I modified the environment by using setenv/saveenv I got the following problem.
The terminal connected to the OMAP5912 rs232 at 115200n8 is working as long as the kernel is uploaded and decompressing. The last message shown is ".booting."
After that message the rs232 line seems to be dead.
The kernel is mounting its root from nfs-server and is running normally except the console device could be used.
I tried several kernels (2.6.16/2.6.19) including the pre-build kernel 2.4 from the distribution CD All the same, the rs232 line dies after uncompressing the kernel.
My bootags setting are:
Bootargs = "mem=32 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw nfsroot=192.168.0.50:/nfsroot"
Has anybody an idea what I could do to get back my rs232 console ?
Regards
Juergen
_______________________________________________
Linux-omap-open-source mailing list
[email protected]
http://linux.omap.com/mailman/listinfo/linux-omap-open-source
Quoted 10 lines · Nishanth Menon
Looking through some of the queries happening in the list, I had been playing around trying to use as little of the pre-build files as possible to do a 2430 boot up from scratch.
In the process of this, I decided to document all the steps I had done.. attached is a txt and pdf version of the same. I hope it will be useful to someone who is starting off on the board for the first time.Most of the document was written with a sleepy eye, so please let me know if you find any bugs or ways to improve the document (the txt version is a generated file so it will lack the images of the pdf...).
Can sleepy eye check if attachments are really there? Or are my eyes too sleepy? ;)
Cheers
Dirk
AW: Help: OMAP5912 RS232 dies after kernel uncompressing.
In reply to Abot BotbotHi Andy.
Hem unbelievable.
But the omap mounts its nfs-root and I can login on the omap by using telnet
So I can not understand how a wrong configured nfs-server might stop the ttyS0
Could it be that you did not read that the system boots completely or do I not understand what you mean?
Mfg.
j.
-----Ursprüngliche Nachricht-----
Von: Abot Botbot [mailto:[email protected]]
Gesendet: Montag, 15. Januar 2007 16:53
An: [email protected]; [email protected]
Betreff: RE: Help: OMAP5912 RS232 dies after kernel uncompressing.
Juergen,
Perhaps your NFS Share isn't set up correctly? I had that problem before I
had set up my NFS share with the right perms and whatnot. Maybe look into the particulars of the config file and make sure all is well. Try mounting the target NFS with another machine other than the board.
Hope this helps,
Andy
Quoted 35 lines
From: "Juergen Sievers" <[email protected]>
Reply-To: [email protected]
To: "'Linux OMAP List'" <[email protected]>
Subject: Help: OMAP5912 RS232 dies after kernel uncompressing.
Date: Mon, 15 Jan 2007 16:22:26 +0100Hello.
After I modified the environment by using setenv/saveenv I got the following
problem.The terminal connected to the OMAP5912 rs232 at 115200n8 is working as long as the kernel is uploaded and decompressing. The last message shown is ".booting."
After that message the rs232 line seems to be dead.
The kernel is mounting its root from nfs-server and is running normally except the console device could be used.
I tried several kernels (2.6.16/2.6.19) including the pre-build kernel 2.4 from the distribution CD All the same, the rs232 line dies after uncompressing the kernel.
My bootags setting are:
Bootargs = "mem=32 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw nfsroot=192.168.0.50:/nfsroot"
Has anybody an idea what I could do to get back my rs232 console ?
Regards
Quoted 7 lines
Juergen
_______________________________________________
Linux-omap-open-source mailing list
[email protected]
http://linux.omap.com/mailman/listinfo/linux-omap-open-source
_________________________________________________________________
Find sales, coupons, and free shipping, all in one place! MSN Shopping Sales & Deals
http://shopping.msn.com/content/shp/?ctid=198,ptnrid=176,ptnrdata=200639
Re: AW: Help: OMAP5912 RS232 dies after kernel uncompressing.
Juergen Sievers stated on 1/15/2007 2:50 PM:
Quoted 6 lines
But the omap mounts its nfs-root and I can login on the omap by using telnet
So I can not understand how a wrong configured nfs-server might stop the ttyS0
Opinion: check your /etc/inittab in the filesystem. maybe you have told getty to hook on to the wrong terminal... some common issues is the getty given wrong baud rate OR given tty0 while ttyS0 is being used etc.. that is a nice place to check.. but do try this: give "init=/bin/sh" along with ur boot options(given the rest of the symptoms, this should work).. if u manage to boot off that.. u need to look deep into ur boot sequence of filesystem -such as rc scripts etc if you have any.
Regards,
Nishanth Menon
AW: AW: Help: OMAP5912 RS232 dies after kernel uncompressing.
Hi Nishanth.
That is a good hint and I did this already but it was not the reason.
Normal, before the ttyS0 was missing, the kernel's initializing messages were shown on the rs323 line. But now - nothing appears after the kernel code gets control.
I will try to reset the whole environment block to create a new and well formatted environment. It seems to me something is wrong on these persistent environment settings. Possible I have typed in an invisible control character in one of these settings.
Mfg.
Juergen
Quoted 11 lines
Opinion: check your
/etc/inittabin the filesystem. maybe you have told getty to hook on to the wrong terminal... some common issues is the getty given wrong baud rate OR given tty0 while ttyS0 is being used etc.. that is a nice place to check.. but do try this: give "init=/bin/sh" along with ur bootoptions(given the rest of the symptoms, this should work).. if u manage to boot off that.. u need to look deep into ur boot sequence of filesystem -such as rc scripts etc if you have any.Regards,
Nishanth Menon