SPI bus on MPC8xx

SPI bus on MPC8xx

[sutra]

Hello everybody,

I'm a french student, new to this list and i'm actually developping an
interface to dialog via the SPI bus of a MPC852T with an HC908GR4. I
have started my developpement with the driver that Alex Zeffertt made
and i had a surprise when i saw that Alex use some CPM function
(m8xx_cpm_dpalloc, m8xx_cpm_hostalloc, ... )  to implement his module
and that those functions weren't exported in the kernel (/proc/ksyms).
I'd like to konw if it was a time when those functions were exported
since Alex used them and the reasons why nowadays this is no more the case.

Thanks you


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SPI bus on MPC8xx

[sutra]

Hello,

I'd like to know if somebody know how to debug physical addresses via
bdigdb ( on a MPC8XX  the dual port RAM of the CPM for example) because
bdi always translate adresses to physical one and when i need to access
physical addresses i can't.
Is it possible to force some space addresses not to be translated by bdi
or not ? ( i have looked the bdi user manual and did not find anything
intresting)

thanks you


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RE: SPI bus on MPC8xx

[Steven Blakeslee]

You could assign a known virtual address to the physical address you want to
view.  You can then dump that virtual address to see the physical contents.

-----Original Message-----
From: sutra [mailto:pierre.sutra@com2gether.net]
Sent: Thursday, April 08, 2004 9:50 AM
To: linuxppc-dev@lists.linuxppc.org
Subject: SPI bus on MPC8xx



Hello,

I'd like to know if somebody know how to debug physical addresses via
bdigdb ( on a MPC8XX  the dual port RAM of the CPM for example) because
bdi always translate adresses to physical one and when i need to access
physical addresses i can't.
Is it possible to force some space addresses not to be translated by bdi
or not ? ( i have looked the bdi user manual and did not find anything
intresting)

thanks you


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/