Date: Sun, 11 May 2003 12:25:27 -0400 From: Don Bowman <don@sandvine.com> To: 'Bruce M Simpson' <bms@spc.org>, Don Bowman <don@sandvine.com> Cc: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@freebsd.org> Subject: RE: programming system bios under bsd? Message-ID: <FE045D4D9F7AED4CBFF1B3B813C8533701B36613@mail.sandvine.com>
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From: Bruce M Simpson [mailto:bms@spc.org] > Don, > > On Sat, May 10, 2003 at 04:04:19PM -0400, Don Bowman wrote: > > i'm looking @ writing a program to re-flash the > > system bios on my supermicro x5dpr motherboard. > > This system has a 512KB bios. Some of the bios > > is mapped to 0xf0000 for 64KB. How do I go about > > determining where the rest of the bios is mapped? > > > > memcontrol list doesn't provide any hints. > > What you are asking is anything but simple. This is something > which I've > scratched my head over quite a bit. > Thanks for the feedback. I've figured out the write protect and the programming algorithm (the board uses an intel fwh4, 82802ab). You've given me an idea, I think the BIOS must be mapped via LPC into PCI space, and the ICH3 must have an address window for it for my board, i will investigate that. --don
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