regarding kgdb in ppc

[Reeve Yang]

I'm facing the same problem for almost two weeks and still don't have
a clue. Please keep me in the thread. Thanks!

- Reeve

On 12/24/06, sudheer <urwithsudheer at gmail.com> wrote:
>
>  Hello All
>
>
> Hi Shakti
>
>
>
> > > Then executed the command mkinird and copied and added  initrd in the
> > > grub.conf - situation is same.
> > > I changed the root parameter to LABEL=/ - situation is same.
> >
> > Basically, block device, initrd support for ramdisk should be enabled:
> >   CONFIG_BLK_DEV_RAM
> >   CONFIG_BLK_DEV_INITRD
> >
> > Double check your .config file.
> >
>
>  I have checked all the above and are enabled in the config.  I have tried
> changing the kernel command line argumnets.
>
>  I get the same error saying:  (All from init/main.c)
>  ----
>  unable to open an initial console
>  No init found.  Try passing init= option to kernel.
>  -----
>  I am able to debug the kernel on x86 systems. Thanks for all the support.
>
>  Now I am working with  kgdb on mpc8540 board.
>  target kernel version - linux-2.6.13
>  KGDB version - linux-2.6.13-kgdb-2.3
>
>  I am getting the following error:
>
>  root at localhost sudheer]# /opt/eldk-3.1.1/usr/bin/ppc_85xx-gdb vmlinux
>  GNU gdb Red Hat Linux (6.3.0.0-1.21_1rh)
>  ...
>  This GDB was configured as "--host=i386-redhat-linux --target=ppc-linux"...
>  (gdb) set remotebaud 115200
>  (gdb) target remote /dev/ttyS0
>  Remote debugging using /dev/ttyS0
>  Ignoring packet error, continuing...
>
>  On the target side, i could see that the target kernel kgdb waiting for
> host communication.
>
>  On the target board with  kernel version - linux-2.6.13 , I could boot it
> only after applying the patches:
>  1. Gain_Phy_update
>  2.patch-2.6.14-rc5
>  3.Phy_Platform_Update
>  The patch-2.6.14-rc5  when applied , deleted the file
> arch/ppc/platforms/pcore.c and
>  pcore.h but the kernel boots well.
>
>  In the KGDB version - linux-2.6.13-kgdb-2.3
>  The ppc-lite.patch tries to modify the pcore.c which is not available.
>
>  I am not sure wether this affects the serial communication establishment.
>
>  Please help me to solve this.
>
>  Thanks
>  Sudheer
>
>
>
>
>
>
>
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