Problem debugging ppc kernel with DDD/GDB/BDI2000 on a custom MPC8260 board
Wolfgang Denk
wd at denx.de
Thu Oct 16 03:56:27 EST 2003
Dear Joao,
in message <DEF39A0710293E489D45B10E06645CBD0243B3B2 at dub-msx1.spectelcorp.com> you wrote:
>
> on u-boot IMMR was set to 0x04700000, which is acceptable as far as
> u-boot is concerned, but not allowed once the kernel is initialised.
>
> The other issue was that the Chip Select was not configured properly on
> u-boot (2MB instead of 32MB), which was not noticed in u-boot since the
> u-boot never tried to access memory above that region, but caused the
> kernel to reset the target.
...
> I am using the denx distribution linuxppc_2_4_devel, and I am
> configuring it using the TQM8260 default configuration, customising some
> CPM settings for UART and FEC.
I would like to point out that you certainly did NOT pick up such a
bogus memory map from the TQM8260 default configuration, nor from any
other board maintened by DENX.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
Old programmers never die, they just branch to a new address.
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