+/* Datasheet: http://www.intel.com/design/intarch/datashts/ 290562.htm */
Trivial in this case, but in general: can we please add the name or document number (not just the URL) for datasheets and other documentation? Vendors just _love_ to rearrange their websites (and some pull their old docs altogether); if we have the name/number (or even just the filename of the pdf) at least there's a chance to google for it again (either on the vendor's site or on some archive).
the lower 64-Kbyte BIOS block (E00000-EFFFF) at the top
A 0 too many.
of 1 Mbyte, or the aliases at the top of 4Gbyte
(FFFE0000-FFFEFFF) result in the generationof BIOSCS#.
But you balanced it by dropping an F :-)
Set bit 2: BIOSCS# Write Protect Enable (1=enable,0=disable). */
The bit is misnamed in the datasheet: it's the "write enable" bit, not the "write protect enable" (which would be "write disable").
printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
Warning only? It's pretty damn fatal :-) Or does this mean "trying to continue anyway" (which might not be such a great plan for a utility that can brick your system)?
Would be nice if this message could be made a bit less cryptic, for example, "WARNING: failed setting %s register %#x to %#x\n". Yes I realise this is probably copied all over the place ;-)
Segher