From: David Woodhouse <[email protected]> We need this proposed addition to the CSM spec, or OVMF will make the whole region from 0xC0000 to 0xFFFFF read-only before invoking our Legacy16Boot method. Read-only stack considered harmful.
http://www.sourceforge.net/mailarchive/forum.php?thread_name=50FD7290.9060003%40redhat.com&forum_name=edk2-devel Not-yet-signed-off-by: David Woodhouse <[email protected]> --- src/LegacyBios.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/LegacyBios.h b/src/LegacyBios.h index 65ace3b..69eabd1 100644 --- a/src/LegacyBios.h +++ b/src/LegacyBios.h @@ -228,6 +228,17 @@ typedef struct { /// Maximum PCI bus number assigned. /// UINT8 LastPciBus; + + /// + /// Start address of UMB RAM (>> 12) + /// + UINT8 UmbStart; + + /// + /// End address of UMB RAM (>> 12) + /// + UINT8 UmbEnd; + } EFI_COMPATIBILITY16_TABLE; /// -- 1.8.0.2 _______________________________________________ SeaBIOS mailing list [email protected] http://www.seabios.org/mailman/listinfo/seabios
