OpenBIOS February 2000

openbios@openbios.org

43 participants
83 discussions

Re: [OpenBIOS] bootloader
by Jaime Dias 18 Feb '00

18 Feb '00

---------- > From: Edwin Rhodes <edwin_rhodes(a)hotmail.com> > To: openbios(a)elvis.informatik.uni-freiburg.de > Subject: [OpenBIOS] bootloader > Date: Quarta-feira, 16 de Fevereiro de 2000 22:55 > > why dont you just use the traditional method of booting an os and forget > about using a multibootloader. ps also, will you support all the traditional > bios calls? i think that it would be a very good idea to otherwise you would > be at a compatibility disadvantage from the viewpoint that only os's that > dont call on the bios would work. > anyway keep up the good work. ps is the source availiable +the image? also > will it work on a non intel pci chipset, ie. isa 386 board. > edwin > all the source (as snapshots, so it's not stable) can be found at ftp.aros.org thanks in advance, jaime dias

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question for this list
by Ronald G. Minnich 17 Feb '00

17 Feb '00

Would anyone object if I advised people interested in linuxbios just to join this list? It seems we have a lot in common. If that's a problem, I'll start a linuxbios list Many thanks ron - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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proposed changes
by Ronald G. Minnich 17 Feb '00

17 Feb '00

I think life would be much easier in OpenBIOS if we did the following: 1) reduce the amount of 16-bit assembly so we need less nasm 2) reduce the amount of 32-bit assembly so we need less as 3) get to protected mode as soon as we can This is important, since initializing sdram requires that you be able to use 32-bit addresses 4) maximize the amount of C Since we aren't just for pentiums To get here, all we need to do is this: 1) in 16-bit mode, lgdt with the in-NVRAM gdt, switch to protected, and jump to 32-bit 2) in 32-bit, turn on memory, and call main() That's about all it takes. I haven't seen anything in the 16 and 32-bit init that we can't do in C, and that includes ins and outs. If I'm missing something let me know. I'm probably going to start to take my snapshot in this direction anyway -- I'm sick of nasm ... ron - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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success on l440gx+ ram
by Ronald G. Minnich 17 Feb '00

17 Feb '00

I forgot to put a 0x17 in reg 0x76 after the mode set command. Sheesh. dram is now working fine. I am actually in protected mode in the 32-bit openbios startup, getting ready to gunzip linux and jump to it. Now the trick is to figure out why I have no display :-) All I want for now is a vga-compatible thing, very limited in scope. So I want the absolute minimum hardware only. Any hints would be welcome. ron - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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New Homepage
by Daniele Frijia 17 Feb '00

17 Feb '00

See http://www.freiburg.linux.de/openbios for the new homepage. Regards, Daniele - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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AROS
by Jaime Dias 17 Feb '00

17 Feb '00

Hi, does Open Bios will catch the i386 irq handles? if it will, i would ask what is the best path to make AROS (www.aros.org) to run as standalone OS on i386 and maybe use the Open Bios as background to all the boot sequence? PS: i have visited the open bios HP, but i am little confused about what is beeing coded (on what they are working now)

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Documentation on 0xcfe IO port?
by Wallace I. Kroeker 16 Feb '00

16 Feb '00

Hello Ron, You put up the following code and I am wondering about the CFE port, in particular where is there some documentation on this. generic_init: PORT_80 0xd0 ; now the fun begins. ; turn on the dram and wait a while (this from the intel book) mov dx, 0xcf8 mov eax, 0x80000074 out dx, eax mov dx, 0xcfe ; turn power and and set the nop bit too. mov al, 0x30 out dx, al I have the interrupt and port information from Ron Brown and there is a reference to PORT 0CF8-0CFF as being used for PCI Configuration Mechanism 1. When I look through all the Intel documentation I only see 0CF8 and 0CFC referenced. Do you have some more documentation on this? Thanks Wallace - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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Problem with 256K BIOS build
by Wallace I. Kroeker 16 Feb '00

16 Feb '00

Hello, I have the OpenBIOS working for both 64K and 128K builds. However, when I try to do the 256K I get nothing. I came across some documentation that claims that "32KB of BIOS expansion range from 0C0000H to 0C8000H is typically reserved for the video BIOS expansion ROM" (source is M-Systems DiskOnChip 2000 data sheet). If this is true then how do you fit the 256K bios in the system as we will need the range from C0000H all the way up to FFFFH and manage to avoid a collision with the video BIOS expansion ROM. I am using loadbios for testing and have sucked out the BIOS that comes with my system. This works fine. However, the OpenBIOS build of 256 doesn't. Any ideas on what we need to do? Wallace - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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RE: [OpenBIOS] success on l440gx+ ram
by Stawnyczy, Evan 16 Feb '00

16 Feb '00

i used to program for interplay, vga hardware was my specialty... what do you mean by vga thing? -----Original Message----- From: Ronald G. Minnich [mailto:rminnich@lanl.gov] Sent: February 15, 2000 9:18 Pm To: openbios(a)elvis.informatik.uni-freiburg.de Subject: [OpenBIOS] success on l440gx+ ram I forgot to put a 0x17 in reg 0x76 after the mode set command. Sheesh. dram is now working fine. I am actually in protected mode in the 32-bit openbios startup, getting ready to gunzip linux and jump to it. Now the trick is to figure out why I have no display :-) All I want for now is a vga-compatible thing, very limited in scope. So I want the absolute minimum hardware only. Any hints would be welcome. ron - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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Re: [OpenBIOS] probably the last questions
by Ronald G. Minnich 16 Feb '00

16 Feb '00

On Wed, 16 Feb 2000, Kent Nyberg wrote: > Are you just trying to put a Linux kernel in the bios, or will you put > an advanced bootloader there? Or will you put both there (bootloader and > kernel)? I am putting linux there. I have no interest in anything else on our cluster -- linux is what we run. > How much code can you put in the bios? 1 MByte. > Since not much seem to have changed on the bios front the last 10 years > i don't think they can be that big... ? They're huge. The phoenix bios is over 1/2M. For all that size what it gets you is a not very useful piece of code. Do you want 1/2M of phoenix bios or 1/2M of linux image :-) > Oh, i have noticed that some linux mailinglist seem to NOT like if one > write alot on the mailinglists.. is it the same here? Please write a lot and ask questions. Also, if you want to help, that would be good too. ron - To unsubscribe: send mail to majordomo(a)freiburg.linux.de with 'unsubscribe openbios' in the body of the message

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