750/107 CHRP question

Richard Danter richard.danter at windriver.com
Fri Aug 1 02:54:43 EST 2003

Hi All,

Sorry if this is a bit of a newbie question....

I am trying to port a 2.4.x kernel to a PPC750 board with a 107
controller. The board has a serial port connected to one of the ROM
select lines (at 0x7C000000) and I would like to use this as my console

So far I can boot the board and see (via the serial port) the kernel
load addresses etc, and the kernel gets decompressed and starts to run.
This is all fine as the MMU is off at this point. However, when the
serial_console_setup() code starts trying to configure the serial port
again, I get a kernel panic as I am accessing an invalid mem space (MMU
now on!).

How do I map this correctly???

My build is based on the sandpoint but with all the init stuff for
devices, such as the RTC, removed. So I have the "standard" mapping in
the MMU_init code.

Many thanks

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