coreboot August 2003

coreboot@coreboot.org

53 participants
141 discussions

VGABIOS
by Luis Pacheco 12 Aug '03

12 Aug '03

Hi there, I'm reading your discussion about building an vgabios... and i discover this link with an vgabios for SiS systems... It could be a good example to start something .... At this moment i'm trying to convert the source from masm to as86 and C... http://openbios.infra.de/archiv/2000-06/0071.html Best Regards, -- Luis André Pacheco http://www.neuralbit.com

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VGA BIOS on EPIA 800
by Michel Belleau 12 Aug '03

12 Aug '03

Hi everyone, I checked everywhere but I can't seem to find any real information about this.. The current status of LinuxBIOS on the EPIA 800 seems to lack vga output (only serial)? On some other site, I found out that it could work but I should extract the VGABIOS out of the current BIOS and inject it somewhere on the flash (?!). How can I extract the current vga bios on my epia800? I don't have my millenium chip and its adapter yet, but I'm gathering informations right now, just to know what to do once I receive them. Thanks a lot to everyone. -- Michel Belleau <michel.belleau(a)malaiwah.com>

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PXA255?
by deya privi 12 Aug '03

12 Aug '03

Hi, Does linuxbios support Intels Xsxale PxA255? ________________________________________________________________________ Yahoo! India Promos: Win TVs, Bikes, DVD players & more! Go to http://in.promos.yahoo.com

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Re: Supporting extension ROMs and beyond...
by YhLu 12 Aug '03

12 Aug '03

It should work with onboard one. You may put the option rom in the EEPROM and set the VGABIOS_START correctly. YH. -----邮件原件----- 发件人: Bari Ari [mailto:bari@onelabs.com] 发送时间: 2003年8月11日 16:41 收件人: ron minnich 抄送: Steve Gehlbach; Eric W. Biederman; SONE Takeshi; Stefan Reinauer; linuxbios(a)clustermatic.org 主题: Re: Supporting extension ROMs and beyond... ron minnich wrote: >Fair use says, I think, that you can copy a bios from your machine to your >machine for personal use. Certainly that's what you do when you load a new >bios image from a web site. You can't distribute it. So ADLO supports >getting the VGA bios out of your on-card bios and building it into >linuxbios. That's how it is done: copy it from your machine to your >machine. > >VGABIOS, on the other hand, just finds the on-card bios and runs it. > > > Does this mean that VGABIOS would not work for boards that have integrated video and have the video BIOS combined into the system BIOS? Bari _______________________________________________ Linuxbios mailing list Linuxbios(a)clustermatic.org http://www.clustermatic.org/mailman/listinfo/linuxbios

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Floppy drives and Linux BIOS
by Gregg C Levine 12 Aug '03

12 Aug '03

Hello from Gregg C Levine Here's a question that's definitely going to keep me up nights. Can a properly configured and working Linux BIOS image, boot something else via the floppy drive, in this case a normal 3.5 drive setup as the A drive? Well at least from the point of view of the motherboard with its original BIOS, it would be setup as the A drive. Basically our friends at FSMLabs market the RTLinux kits. They also make available the same thing under the GPL license, I still haven't figured if there is a loss of functionality between the two. At some point they were working on a floppy drive sized version of the product. Before committing to having a working Linux BIOS image based on it, what I am leaning towards is having the chosen image boot the floppy drive sized version, and then facilitate whatever tests I, (or my staff), have in mind. Probably between two or more machines, with one of them being the lucky one with the working Linux BIOS image on it, in place of the commodity BIOS. I suspect they all would need to be the same machine for this to work. And of course the company unofficially tells me that they have actually discontinued work on this floppy drive sized version of their product. So far, I can't seem to get them to tell me why. ------------------- Gregg C Levine hansolofalcon(a)worldnet.att.net ------------------------------------------------------------ "The Force will be with you...Always." Obi-Wan Kenobi "Use the Force, Luke." Obi-Wan Kenobi (This company dedicates this E-Mail to General Obi-Wan Kenobi ) (This company dedicates this E-Mail to Master Yoda )

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Re: Supporting extension ROMs and beyond...
by YhLu 11 Aug '03

11 Aug '03

Ron, Thanks the clarification. I only move idt.c and vgabios.c and pcbios.c to the freebios2 and make it can be compiled into linuxbios. And it should call the Option rom in MB EEPROM or addon on card's expansion rom. I also find the freebios/util/vgabios. Is that you mean 16 VGABIOS or emulation? Regards YH -----邮件原件----- 发件人: ron minnich [mailto:rminnich@lanl.gov] 发送时间: 2003年8月11日 16:21 收件人: YhLu 抄送: SONE Takeshi; linuxbios(a)clustermatic.org 主题: Re: Supporting extension ROMs and beyond... On Mon, 11 Aug 2003, YhLu wrote: > I try to move the vgabios to freebios2 for 2880. I put the BIOS option rom > to 0xfff8c000, ( the second 48k). ah, well, we shouldn't really do that until we resolve the VGA bios question. Looks, however, looke tehre is a bug ... Takeshi can perhaps address it better than I. I did look at our three options today: emulation, ADLO, and VGABIOS. VGABIOS is almost 100% C save for the 32-16 trampoline code. ADLO rombios.c is mostly assembly code with C wrappers around it. Emulation is C. Emulation is 256K ADLO is 64K. VGABIOS is much less, something like 16K last time I built it. The functions that VGABIOS needs to finish up to have as complete support as bringing up graphics as ADLO are not that many in number. Which makes sense: what a VGA BIOS needs to do is diddle its own registers, so most BISO functionality is not that useful for them. ADLO will not find the option rom on a card and use it; VGABIOS will. The most portable long-term way to go is emulation. I don't have room. These are the issues I have seen so far. ron

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EPIA-M DDR HELP
by James Weir 11 Aug '03

11 Aug '03

I hacked the rominit.inc for the epia to configure for my memory configuration i.e 128 Mb on first bank, 128 Mb on second bank ( total 256Mb ), but now rather than hanging when it Disables cache for first time whilst setting up mtrr it restarts continuously.. ,,should I get different ram, or can someone explain the register maps and configuration options in raminit.inc so that I can customize it to my own ddr. Thanks, A frustrated James :-)

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re: Supporting extension ROMs and beyond...
by YhLu 11 Aug '03

11 Aug '03

Ron, If I only want to use addon AGP Display adapter ROM, I don't need to use VGABIOS? How about PCIBIOS? Regards YH. -----邮件原件----- 发件人: SONE Takeshi [mailto:ts1@tsn.or.jp] 发送时间: 2003年8月9日 10:55 收件人: ron minnich 抄送: YhLu; linuxbios(a)clustermatic.org 主题: Re: Supporting extension ROMs and beyond... On Fri, Aug 08, 2003 at 02:29:08PM -0600, ron minnich wrote: > On Fri, 8 Aug 2003, YhLu wrote: > > > Where is the VGA BIOS support? Still in freebios? > > it's the one that SONE used in linuxbios, he can describe again how it is > enabled. We are using it here for NVidia cards. I don't know about freebios2 tree, but in freebios tree there is some code to call POST routine of external VGA BIOS, and support for some realmode BIOS call (like PCI BIOS) to help the VGA BIOS run happily. It is activated by config like below: option CONFIG_VGABIOS=1 option CONFIG_REALMODE_IDT=1 dir src/bioscall option CONFIG_PCIBIOS=1 option VGABIOS_START=0xfffe0000 The last line is needed when you use the VGA BIOS image from the Flash (typically for onboard VGA). If this option is not defined, VGA card's ROM is used (this is what Ron's original code does). Ron: my last fix to pcibios.c is in the tree and working ok. Thanks. -- Takeshi

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Re: Supporting extension ROMs and beyond...
by YhLu 11 Aug '03

11 Aug '03

Ron, If the user want to LinuxBIOS with embedded solution with screen (SET TOP BOX???) the VGA support must be ready and some Workstation also need that. Otherwise it will limit the application scope of linubios. Other option rom will be another story, for example: about Serial ATA, Promise doesn't want provide support, but it's OK , We can get detail info from Silicon Images chip, so We can use their solution and forget Promise. As for the scsi chip, LSI likes to share the info. So We can produce their chip support at first. ( I have add the support for LSI scsi chip). As for Adaptec is hesitating to give the detail info, and may need more request to them. It is said Only DELL have got the corresponding from them. Who will move VGABIOS support to freebios2 ? I would have a try on Tyan S2885 . (Two Opterons and workstation MB) this week. YH -----邮件原件----- 发件人: ron minnich [mailto:rminnich@lanl.gov] 发送时间: 2003年8月11日 8:59 收件人: Eric W. Biederman 抄送: SONE Takeshi; Stefan Reinauer; linuxbios(a)clustermatic.org 主题: Re: Supporting extension ROMs and beyond... On Mon, 11 Aug 2003, ron minnich wrote: > For linuxbios to succeed in future, we'll need support for these two > things. I think this is a lamentable state of affairs. But that's how it > is. > > I think long-term the best way to fix it for all architectures is via > emulation, but for the immediate-term we can make callback/binary support > for the common(-est) case: the x86. I contradict myself. Either we need callbacks or we don't. If we get emulation, we don't need them. Sorry for my confusing note. Eric, I am sympathy with what you are saying. There is a reality here -- people want VGA and they want it on early. I want to accomodate this. Is emulation a suitable, architecture-independent way to achieve this? I'm thinking it might be. Can we then build it in as an option when we build a linuxbios? thanks ron _______________________________________________ Linuxbios mailing list Linuxbios(a)clustermatic.org http://www.clustermatic.org/mailman/listinfo/linuxbios

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sc1200 (GX1)
by Brian G. Rhodes 11 Aug '03

11 Aug '03

This is not directly linuxbios related at all, but since there have been some other people asking questions about the geode gx1 hardware, I am curious. Is anyone successfully using National's fastPCI (66MHz)? The hardware I am working on seems to lock up when doing a large number or reads, or big reads. It is most evident when using DMA with IDE. Any ideas? Brian G Rhodes bgr(a)linespeed.net brhodes(a)visualcircuits.com +1 612-741-1191

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coreboot August 2003