On Fri, Nov 7, 2008 at 12:17 PM, Anose, Bijoy K (N-Aerotek) < [EMAIL PROTECTED]> wrote:
> Hello Myles, > > According to a mailing list post ( > http://article.gmane.org/gmane.linux.bios/18159/match=s2892) you were the > author of > the 2892 tutorial on the coreboot website. Sorry to bother you directly, > but you did say "feel free to ask for clarifications", > so I'm taking you at your word. :) > No problem. If you CC the list you could get a faster response sometimes, depending on the time of day, phases of the moon, etc. > I've been looking at the tutorial, and I'm a bit confused. It's probably > just my ignorance of how coreboot works, etc. > As I understand it, I should be able to replace the legacy bios on my > S2892-based system with a coreboot-generated > ROM image. I want to be able to boot from a SATA hard drive with an > existing Linux install. > > So far, I've taken the latest SVN snapshots of coreboot-v2, filo, and > buildrom. Hardware-wise, I have a contraption that > lets me hot swap the bios chip, and a couple of spare chips. I've already > successfully read an image file from the legacy > BIOS and written it back and verified it a few times. > > I'm pretty familiar with the Linux boot process, on top of a legacy BIOS > anyway. I created an isolinux-based system > that just worked out of the ramdisk and never mounted a hard disk. > > I believe the steps I want to follow are roughly the following: > * build a very minimal kernel that will end up in the ROM image > Buildrom does this. > * configure and build FILO (filo.elf will include the kernel image?) > Not needed. Filo doesn't have SATA drivers. That's why you need a kernel in the ROM. You will have to configure the shell and the boot scripts in buildrom/buildrom-devel/skeleton/ They select the defaults, mount the drives, etc. > * use buildrom to create the actual ROM image file (superset of filo.elf?) > Use buildrom, but the file only will have coreboot and the kernel with a minimal shell > * burn image to the chip using flashrom > Yes. > Is the documentation directory under coreboot-v2 the answer to all of my > questions, even though it seems to be intended > for an EPIA board? It seems to be the "general" part of the steps I would > need, with your S2892 tutorial just calling out > the additional/divergent steps specific to the S2892. > I think my tutorial was additional to another tutorial on the wiki, not the docs. The Tyan boards are very similar. Good luck. Myles
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