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Change the PM Timer RegisterBitWidth according to the Flags 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10231 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu 2010-03-11 09:33:40 +00:00
parent e8c23923da
commit 4903c013bc
1 changed files with 9 additions and 1 deletions
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10
DuetPkg/DxeIpl/LegacyTable.c
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@ -316,9 +316,17 @@ PrepareFadtTable (
if (AcpiDescription->PM_TMR_BLK.Address == 0) {
AcpiDescription->PM_TMR_BLK.Address = Fadt->PmTmrBlk;
AcpiDescription->PM_TMR_BLK.AddressSpaceId = EFI_ACPI_3_0_SYSTEM_IO;
AcpiDescription->PM_TMR_BLK.RegisterBitWidth = (UINT8) ((AcpiDescription->TMR_VAL_EXT == 0) ? 24 : 32);
}
//
// It's possible that the PM_TMR_BLK.RegisterBitWidth is always 32,
// we need to set the correct RegisterBitWidth value according to the TMR_VAL_EXT
// A zero indicates TMR_VAL is implemented as a 24-bit value.
// A one indicates TMR_VAL is implemented as a 32-bit value
//
AcpiDescription->PM_TMR_BLK.RegisterBitWidth = (UINT8) ((AcpiDescription->TMR_VAL_EXT == 0) ? 24 : 32);
return ;
}