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xCAT Network Boot Agent
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Michael Brown ccb6e5c627 [realtek] Clear bit 24 of RCR 
On an Asus Z87-K motherboard with an onboard 8168 NIC, booting into
Windows 7 and then warm rebooting into iPXE results in a broken RX
datapath: packets can be transmitted successfully but garbage is
received.  A cold reboot clears the problem.

A dump of the PHY registers reveals only one difference: in the
failure case the bits ADVERTISE_PAUSE_CAP and ADVERTISE_PAUSE_ASYM are
cleared.  Explicitly setting these bits does not fix the problem.

A dump of the MAC registers reveals a few differences, of which the
most obvious culprit is the undocumented bit 24 of the Receive
Configuration Register (RCR), which is set in the failure case.
Explicitly clearing this bit does fix the problem.

Reported-by: Sebastian Nielsen <ipxe@sebbe.eu>
Reported-by: Oliver Rath <rath@mglug.de>
Debugged-by: Sebastian Nielsen <ipxe@sebbe.eu>
Tested-by: Sebastian Nielsen <ipxe@sebbe.eu>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
2014-03-20 15:54:25 +00:00
contrib [errdb] Strip platform error code for non-platform-generated errors 2013-04-29 15:36:32 +01:00
src [realtek] Clear bit 24 of RCR 2014-03-20 15:54:25 +00:00
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