Re: [Ltib] Ltib - Unable to open an initial console

[Li Yuan-Lung]

Dear Kevin,

I have similar problem. Below is the situation:

1. I have ltib image build in early March.(old-uImage, old-rootfs, old-uboot.bin)

2. This week I built a new image from ltib(new-uImage, new-rootfs, new-uboot.bin)

The boot parameter is the same as below:

"console=ttyS0,115200n81 root=/dev/mtdblock3 rw rootfstype=jffs2 init=/sbin/init"

The symptom is, after uboot uncompress the linux kernel, I lose my console forever. So I take some combination test as below:

(1)new-uboot.bin  (133KB)

     new-uImage-->new-rootfs   (X, not work)

     old-uImage-->old-rootfs      (X, not work)

     new-uImage-->oldrootfs     (X, not work)

     old-uImage-->oldrootfs        (X, not work)

(2)old-uboot.bin (144KB)

     new-uImage-->new-rootfs   (O, work!)

     old-uImage-->old-rootfs      (O, work!)

The "not work" condition is the same as the symptom.

My conclusion is that maybe there is some modification in u-boot source to affect the boot parameter pass to kernel. But I haven't check that yet. Do you have any comment?

Henry

2010/4/29 Kevin Wells <address@hidden>

Hi Peter,

Can you paste the output of the kernel with the error and the cmdline
so we can see what's happening?

thanks,
Kevin

> -----Original Message-----
> From: ltib-bounces+kevin.wells=nxp.com@nongnu.org [mailto:ltib-
> bounces+kevin.wells=nxp.com@nongnu.org] On Behalf Of Stuart Hughes
> Sent: Wednesday, April 28, 2010 12:42 AM
> To: Péter
> Cc: address@hidden
> Subject: Re: [Ltib] Ltib - Unable to open an initial console
>
> Hi Peter,
>
> Make sure you have a /dev/console on your target filesystem similar to
> (i.e 5,1):
>
> crw------- 1 root root 5, 1 2010-04-03 11:38 /dev/console
>
> Make sure you pass (or have as a default) some console device in the
> kernel boot arguments, e.g for the first serial port:
>
> console=/dev/ttyS0
>
> There are many more possibilities, but presumably that BSP should work
> in the default configuration? maybe someone with that board can confirm
> this.
>
> Regards, Stuart
>
> Péter wrote:
> > Hi all,
> >
> > I need some help. I have a NXP board with LH7a404 processor.
> > I build the kernel and root file system. After im booting the kernel,
> always I have
> > a warning message.WARNING: Unable to open an initial console.
> >
> > I looked for any help in web but I dont find the good solution.
> >
> > The kernel is running! I can do all command in etc/inittab. (for
> example:
> > ::sysinit:/bin/ls > example.txt)But I cant runnig my programs (for
> example:
> > hello.out <- this program must create a
> > file and write to the file Hello world!)
> > Can anybody help me? :(
> >
> > Péter
> >
>
>
> _______________________________________________
> LTIB home page: http://ltib.org
>
> Ltib mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/ltib


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--
Best Regards,

Henry Li
SW Engineer of Climax Co.
TEL: +886-2-2794-0001 ext.231
FAX: +886-2-2792-6618