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xCAT Network Boot Agent
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Michael Brown 8391ff3ee0 [intel] Refill receive ring only after enabling receiver 
On 82576 (and probably others), the datasheet states that "the tail
register of the queue (RDT[n]) should not be bumped until the queue is
enabled".  There is some confusion over exactly what constitutes
"enabled": the initialisation blurb says that we should "poll the
RXDCTL register until the ENABLE bit is set", while the description
for the RXDCTL register says that the ENABLE bit is set by default
(for queue zero).  Empirical evidence suggests that the ENABLE bit
reads as set immediately after writing to RCTL.EN, and so polling is
not necessary.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2012-07-10 09:32:58 +01:00
contrib [contrib] Update bochsrc.txt to latest version of bochs 2012-06-06 20:37:53 +01:00
src [intel] Refill receive ring only after enabling receiver 2012-07-10 09:32:58 +01:00
COPYING Initial revision 2005-05-17 16:44:57 +00:00
COPYRIGHTS [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org