Problem running Linux 2.6.11 on MPC8272ADS

[Walter L. Wimer III]

I'll submit one once I get everything else working on this board that I
need....  :-)


Walt



On Mon, 2005-03-28 at 10:21 -0600, Kumar Gala wrote:

> 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.  The file arch/ppc/platforms/pq2ads.c
> > contains the following function:
> >
> >   void __init
> >    m82xx_board_setup(void)
> >   {
> >          /* Enable the 2nd UART port */
> >          *(volatile uint *)(BCSR_ADDR + 4) &= ~BCSR1_RS232_EN2;
> >   }
> >
> >
> >
> > I had to ifdef-out the assignment statement above.  It appears that the
> >  definition for BCSR_ADDR in the kernel code differs from what U-Boot 
> > is
> >  using, and that area of memory isn't properly mapped into the kernel
> >  address space this early in the boot sequence.  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=y
> > > CONFIG_SERIAL_CPM_CONSOLE=y
> > > CONFIG_SERIAL_CPM_SCC1=y
> > >
> > >
> > > when I boot the kernel from the u-boot the system hangs up right 
> > after
> > > the kernel decompression.
> > >
> >
> >  _______________________________________________
> > Linuxppc-embedded mailing list
> >  Linuxppc-embedded at ozlabs.org
> > https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> 
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