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path: root/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacyBootSupport.c
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2012-03-01When CSM uses EFI_SEGMENT and EFI_OFFSET to call CSM16 function, some CSM16 ↵li-elvin
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
2011-11-15CSM is updated to remove RaiseTPL (TPL_HIGH_LEVEL) and disable 2 known UEFI ↵li-elvin
interrupts instead. This is needed to process HPET timer interrupt before going into real mode. Signed-off-by: li-elvin Reviewed-by: vanjeff git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12701 6f19259b-4bc3-4df7-8a09-765794883524
2011-08-09Remove the code added originally to restore 8254 timer to 54ms.li-elvin
Signed-off-by: li-elvin Reviewed-by: jyao1 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12109 6f19259b-4bc3-4df7-8a09-765794883524
2011-08-04Print PCI Interrupt Line/Interrupt Pin registers before booting legacy OS.niruiyu
Signed-off-by: niruiyu Reviewed-by: li-elvin git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12088 6f19259b-4bc3-4df7-8a09-765794883524
2011-06-27IntelFrameworkModulePkg: Add Compatibility Support Module (CSM) driversjljusten
Added these drivers: * LegacyBiosDxe * BlockIoDxe * KeyboardDxe * Snp16Dxe * VideoDxe Signed-off-by: jljusten Reviewed-by: mdkinney Reviewed-by: geekboy15a git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11905 6f19259b-4bc3-4df7-8a09-765794883524