Re: Going from 2.2.12 to 2.2.17pre10

Matt Porter [off-list ref] writes:

quoted

Getting those changes into PPCBUG would be great.

All you need is a big customer of MCG's to push them to do it.  Money
is a powerful motivator.

OK. Then I'll try the official channels. Is there a name for these
changes so that people know what I'm asking for?

quoted

How board specific is the residual data that Bugboot needs?

For the single processor boards, the only thing used for the prep port
is the memory sizing information.  You can always hack that or fix
the kernel to get memory size from the board registers or VPD (in the
case of the MVME2400 and later boards).

OK. I'll look into that after my vacation.

quoted

Would it be possible to make one image for 2300 cards and one for 2400
cards or does memory size affect the residual data?

See above, you could make a lowest common denominator version of the
data and lose some memory.  Honestly, I'd just hack the kernel...PPCBUG
and residual data are a horrible burden.  Look through prep_* and
mm/init.c for every place residual data is used and hardcode for your
MCG boards.  In init.c, prep_find_end_of_memory() can detect a Raven
bridge then use the documented board registers to identify memory size
(see online user manual).  A 2400 puts memory size across the I2C bus
in a EEPROM containing all sorts of useful information.  Bug MCG to get
specs on the layout of these VPD records.

Good. That doesnt sound *too* difficult. Thanks for the info.

/Micke

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