From mboxrd@z Thu Jan 1 00:00:00 1970 To: Matt Porter Cc: linuxppc-dev@lists.linuxppc.org Subject: Re: Going from 2.2.12 to 2.2.17pre10 References: <20000708162915.A11060@cx258813-a.chnd1.az.home.com> <20000709222943.A19611@cx258813-a.chnd1.az.home.com> Mime-Version: 1.0 (generated by tm-edit 7.108) Content-Type: text/plain; charset=US-ASCII From: Michael Lundkvist Date: 12 Jul 2000 14:52:23 +0200 In-Reply-To: Matt Porter's message of "Sun, 9 Jul 2000 22:29:43 -0700" Message-ID: Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Matt Porter writes: > > > > 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? > > 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. > > 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 ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/