> Date: Thu, 23 Jun 2011 10:02:31 +1000 > Subject: Re: U-boot for Pentium > From: graeme.r...@gmail.com > To: r_boulw...@hotmail.com > CC: u-boot@lists.denx.de > > Hi Raleigh, > > On Thu, Jun 23, 2011 at 9:37 AM, Raleigh Boulware > <r_boulw...@hotmail.com> wrote: > > Thanks for your help. > > > > I have several boards I am looking at. > > One is a Pentium Main board that uses the Intel 82340LX chip set. > > Anther board is a Pentium that uses the Opti Viper Chip set. > > The third is just a Mother board that has a custom FPGA as the North and > > south bridge. > > A couple of questions: > - Are these commercially available boards? No these are boards I have here at home that I am working with. > - Do you have model/part numbers? I believe the Chip set numbers are 82C556, 82C557, and 82C558 this is for the Opti board. I also have schematics in Orcad for this board and full ducmentation on this chipset. > - Is this a work related port (versus a spare time personal effort)? No actually this is a home project. At work I do Hardware development. Schematics, board layout and debug. > > > I think the Intel and Opti main boards could be used down the road for > > others to port U-boot to other Later Platforms. > > Yes, I would love to get bare-bones support for more x86 CPUs into U-Boot. > So far I have only done sc520 because that is all I have ready access to Well these boards are just first generation Pentium mother boards. I know the performance is slow compared to today's standard, but they are easy to write code for because the registers are as many as the chipsets today. I am also working on a platform that has no North bridge or south bridge. This might be easier from a U-boot linux stand point but more difficult from a Hardware standpoint > > Also, have you looked at Coreboot (it is a BIOS replacement project). Not > that I don't want to get more x86 U-Boot ports running, but you may find > that the board you are looking at is already supported by Coreboot > (especially if it is a commercially available motherboard) > > > I have to admit my programming skills in the GNU enviroment is very limited. > > I am taken a Linux course now at work and I somewhat understand. I guess > > right now I am trying to understand and work my way through the U-boot > > source. So please excuse any questions that might seen odd or dumb. > > Ask away - If you are unsure of mailing list etiquette, Wolfgang is rather > fond of these two links: > > http://www.netmeister.org/news/learn2quote.html > http://catb.org/esr/faqs/smart-questions.html Yeah this seems like alot to try to remember to do...I'm sure I am breaking a bunch of rules on this. > > Don't forget to have a good look through the U-Boot wiki at: > > http://www.denx.de/wiki/U-Boot/WebHome > > And the 'U-Boot Porting Guide' found in the README: > > http://git.denx.de/?p=u-boot.git;a=blob_plain;f=README;hb=HEAD > > Just so you know, U-Boot is a hobby for me (i.e. limited time, no budget). > I'm more than willing to help, but unfortunately that help is not going to > extend to buying my own development hardware > Yeah, this is a hobby for me too. It is a Sloooowww hobby at that... This U-boot seems very big I am trying to fumble my way through it. Right now I am going through the .S files from the reset vector and following it from there. I got to the 'Start.S' and got lost that's why I asked about which board on the tree was the sc520 or x86 platform. I will keep trying to make baby steps and ask questions if I get stuck > > thanks for your help. > > My pleasure > > Regards, > > Graeme
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