diff options
| author | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-03-17 09:48:05 +0000 |
|---|---|---|
| committer | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-03-17 09:48:05 +0000 |
| commit | c0d69d10f6f09bdecba70f5750c46b29795e8287 (patch) | |
| tree | 3621209f61d0d55cf6b0ce49dad06f027d03dfef /IntelFrameworkModulePkg | |
| parent | fa03149c12786e4cedd8579ca7cc770f35618f72 (diff) | |
| download | edk2-platforms-c0d69d10f6f09bdecba70f5750c46b29795e8287.tar.xz | |
The ATA alignment_logic_in_phy_blocks field doesn’t directly report the lowest aligned LBA. Instead, there’s some modulo arithmetic involved.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10266 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'IntelFrameworkModulePkg')
| -rw-r--r-- | IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c index c22f7a3b30..7d92065b1c 100644 --- a/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c +++ b/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ata.c @@ -2563,7 +2563,8 @@ AtaEnableLongPhysicalSector ( //
if ((AtaIdentifyData->alignment_logic_in_phy_blocks & 0xc000) == 0x4000) {
IdeDev->BlkIo.Media->LowestAlignedLba =
- (EFI_LBA) (AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff);
+ (EFI_LBA) (IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock - (AtaIdentifyData->alignment_logic_in_phy_blocks & 0x3fff)) %
+ IdeDev->BlkIo.Media->LogicalBlocksPerPhysicalBlock;
}
}
//
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