Difference between revisions of "FAQ"

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(→‎What is a PIRQ table?: shortening the mail)
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=== What is a PIRQ table? ===
=== What is a PIRQ table? ===
From Adam Sulmicki:
   
   
I found beautfiul descrition of the BIOS implementation of the PIRQ in the red PCI book.
Detail on $PIR data structure according to red PCI book:       
[http://www.microsoft.com/whdc/archive/pciirq.mspx]
I found the description of the $PIR data structure in the
Linuxbios source saves the $PIR data structure between 0xf0000 & 0x100000.
       
Search for $PIR and then save it before copying over our bios to fix address.
  http://www.microsoft.com/whdc/archive/pciirq.mspx
looking over linuxbios sources I see that it saves the $PIR data structure
somewhere between 0xf0000 & 0x100000.
so it seems I'll have to search for $PIR and then save it before copying
over our bios. sigh. hoped for some fixed address in mem.
--
Adam
http://www.eax.com      The Supreme Headquarters of the 32 bit registers


=== How do I set up etherboot with LinuxBIOS? ===
=== How do I set up etherboot with LinuxBIOS? ===

Revision as of 23:45, 6 March 2007