li-elvin 81c0d6e9a7 When CSM uses EFI_SEGMENT and EFI_OFFSET to call CSM16 function, some CSM16 use es:[offset + 0xabcd] to get data passed from CSM32, offset + 0xabcd could exceed 0xFFFF which is invalid in real mode. So added NORMALIZE_EFI_SEGMENT and NORMALIZE_EFI_OFFSET to keep offset as small as possible to avoid this issue during CSM16 function call. ... Signed-off-by: li-elvin Reviewed-by: rsun3 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13074 6f19259b-4bc3-4df7-8a09-765794883524		2012-03-01 11:16:42 +00:00
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BiosThunk	Set video resolution to highest when PcdVideoHorizontalResolution or PcdVideoVerticalResolution are set to 0x0.	2011-10-28 08:25:18 +00:00
LegacyBiosDxe	When CSM uses EFI_SEGMENT and EFI_OFFSET to call CSM16 function, some CSM16 use es:[offset + 0xabcd] to get data passed from CSM32, offset + 0xabcd could exceed 0xFFFF which is invalid in real mode. So added NORMALIZE_EFI_SEGMENT and NORMALIZE_EFI_OFFSET to keep offset as small as possible to avoid this issue during CSM16 function call.	2012-03-01 11:16:42 +00:00