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Michael Brown e46154fbb4 [pci] Use flat real mode to call INT 1a,b101 ... Some HP BIOSes (observed with an HP ProLiant m710p Server Cartridge) have a bug in the implementation of INT 1a,b101: they blithely assume that real-mode code is able to read from anywhere in the 32-bit memory space. This problem affects the call to INT 1a,b101 made from within pcibios_num_bus() (which uses REAL_CODE() and hence executes in genuine real mode) but does not affect the call made from within romprefix.S (since with a PMM BIOS, that call executes in flat real mode anyway). Work around the problem by explicitly calling flatten_real_mode() before invoking INT 1a,b101. This is a rarely-used code path, and so the extra overhead of emulating instructions in some VM configurations (see commit 6d4deee ("[librm] Use genuine real mode to accelerate operation in virtual machines") for more details) is negligible. Reported-by: Wissam Shoukair <wissams@mellanox.com> Debugged-by: Wissam Shoukair <wissams@mellanox.com> Debugged-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>		2015-06-23 20:51:19 +01:00
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i386	[pci] Use flat real mode to call INT 1a,b101	2015-06-23 20:51:19 +01:00
x86	[int13con] Add basic ability to log to a local disk via INT 13	2015-05-19 12:58:03 +01:00
x86_64	[libc] Add x86_64 versions of setjmp() and longjmp()	2015-04-07 06:40:42 +01:00