On 1/31/2019 10:48 AM, Hao Wu wrote:
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1409
This commit will add the AHCI mode ATA device support in the PEI phase.
More specifically, the newly add AhciPei driver will consume the ATA AHCI
host controller PPI for ATA controllers working under AHCI code within the
system. And then produces the below PPIs for each controller:
EDKII PEI ATA PassThru PPI
Storage Security Command PPI
Also, the driver will consume the S3StorageDeviceInitList LockBox in S3
phase. The purpose is to perform an on-demand (partial) ATA device
enumeration/initialization on each controller to benefit the S3 resume
performance.
The implementation of this driver is currently based on the below
specifications:
Serial ATA Revision 2.6
Serial ATA Advanced Host Controller Interface (AHCI) 1.3.1
AT Attachment with Packet Interface - 6 (ATA/ATAPI-6)
Cc: Jian J Wang <jian.j.w...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a...@intel.com>
Similar comments regarding the device path part.
--
Thanks,
Ray
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