From: Kumar Gala <kumar.gala@freescale.com>
To: "Walter L. Wimer III" <walt.wimer@timesys.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Problem running Linux 2.6.11 on MPC8272ADS
Date: Mon, 28 Mar 2005 10:21:38 -0600 [thread overview]
Message-ID: <4a399aeb5127923823feb2ced5eb0e1d@freescale.com> (raw)
In-Reply-To: <1112026020.25896.8.camel@excalibur.timesys.com>
A patch to make this work properly would be appreciated.
- kumar
On Mar 28, 2005, at 10:06 AM, Walter L. Wimer III wrote:
>
>
> Hi Mike,
>
> I had the same "hang" experience.=A0 The file =
arch/ppc/platforms/pq2ads.c
> contains the following function:
>
> =A0 void __init
> =A0 m82xx_board_setup(void)
> =A0 {
> =A0 =A0=A0=A0=A0=A0 /* Enable the 2nd UART port */
> =A0 =A0=A0=A0=A0=A0 *(volatile uint *)(BCSR_ADDR + 4) &=3D =
~BCSR1_RS232_EN2;
> =A0 }
>
>
>
> I had to ifdef-out the assignment statement above.=A0 It appears that =
the
> definition for BCSR_ADDR in the kernel code differs from what U-Boot=20=
> is
> using, and that area of memory isn't properly mapped into the kernel
> address space this early in the boot sequence.=A0 As a result, I was
> getting an Oops() before the console was even enabled (I could see =
the
> Oops message by examining the kernel's printk log buffer using a
> BDI-2000 hardware debugger).
>
>
>
>
> Good luck,
>
> Walt Wimer
> TimeSys Corporation
>
>
>
>
>
> On Sun, 2005-03-27 at 11:31 +0200, Mike Rapoport wrote:
> > Hi,
> > I'm trying to bring up the Linux 2.6.11 on MPC8272ADS and it seem =
to
> > hang up at the very beginning.
> > I use ads8272_defconfig and then enable console on SCC:
> >
> > CONFIG_SERIAL_CPM=3Dy
> > CONFIG_SERIAL_CPM_CONSOLE=3Dy
> > CONFIG_SERIAL_CPM_SCC1=3Dy
> >
> >
> > when I boot the kernel from the u-boot the system hangs up right=20
> after
> > the kernel decompression.
> >
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
next prev parent reply other threads:[~2005-03-28 16:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-27 9:31 Problem running Linux 2.6.11 on MPC8272ADS Mike Rapoport
2005-03-28 16:06 ` Walter L. Wimer III
2005-03-28 16:21 ` Kumar Gala [this message]
2005-03-28 16:24 ` Walter L. Wimer III
-- strict thread matches above, loose matches on Subject: below --
2005-03-29 6:29 Bastos Fernandez Alexandre
2005-03-29 15:44 ` Walter L. Wimer III
[not found] ` <424A60E1.4080802@compulab.co.il>
2005-03-30 16:00 ` Walter L. Wimer III
2005-03-30 17:42 ` Kumar Gala
2005-03-31 3:03 Li Yang-r58472
2005-03-31 3:26 ` Eugene Surovegin
2005-03-31 8:22 Li Yang-r58472
2005-03-31 11:17 ` Eugene Surovegin
2005-03-31 15:36 ` Jon Loeliger
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