MPC8xx DPRAM : m8xx_cpm_hostalloc

[Christian Batt]

> > > You can place your buffers outside the DPRAM (you can use
> > > m8xx_cpm_hostalloc for that).
> >
> > OK.
>
> Does this solve your problem ? What are you working on, e.g. which
> controller/protocol ? What is your HW (CPU, board) ?

I am working on a utopia (ATM) module. The board is a TQM8xxL
shipped with a 860SAR, Rev C1.
The buffers are stored in the host main memory, whereas the Buffer
Descriptors and some other ATM tables are stored in DPRAM.
That's why I need more DPRAM space ...

> > No, I don't use any microcode patch.
>
> On my MBX board the EPPC-Bug monitor loads a patch at boot time. I ignored
> that for a long time; I thought I was done with disabling the microcode
> option in the kernel config. But I had to explicitly disable the microcode
> relocation to get my SPI working.
>
> Surely it would work also with microcode enabled but then I would have to
> take care of all these relocation things.

The monitor I use to run the kernel, is the one shipped with the TQboard.
Just after a hard reset, I have dumped the state of the register after
monitor setup : SCCR = 0  ->  ERAM =0 : So, microcode program execution is
disabled.

I will get a deeper look inside all that stuff ...

Thanks for your help Tobias,

Best Regards

Christian


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