Commit Graph

39 Commits

Author SHA1 Message Date
Michael D Kinney 9d510e61fc MdeModulePkg: Replace BSD License with BSD+Patent License
https://bugzilla.tianocore.org/show_bug.cgi?id=1373

Replace BSD 2-Clause License with BSD+Patent License.  This change is
based on the following emails:

  https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html
  https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html

RFCs with detailed process for the license change:

  V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html
  V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html
  V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2019-04-09 10:58:08 -07:00
Star Zeng d98fc9adfb Revert "XhciDxe: Use common buffer for AsyncInterruptTransfer"
There is concern at the thread
https://lists.01.org/pipermail/edk2-devel/2018-November/031951.html.
And the time point is a little sensitive as it is near edk2-stable201811.

This reverts commit 7779209971.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2018-11-07 22:48:07 +08:00
Star Zeng 7779209971 MdeModulePkg XhciDxe: Use common buffer for AsyncInterruptTransfer
V3:
Call XhcFreeUrb after XhcCreateTransferTrb fails in XhcCreateTrb.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1274

In current code, XhcMonitorAsyncRequests (timer handler) will do
unmap and map operations for AsyncIntTransfers to "Flush data from
PCI controller specific address to mapped system memory address".
XhcMonitorAsyncRequests
  XhcFlushAsyncIntMap
    PciIo->Unmap
      IoMmu->SetAttribute
    PciIo->Map
      IoMmu->SetAttribute

This may impact the boot performance.

Since the data buffer for XhcMonitorAsyncRequests is internal
buffer, we can allocate common buffer by PciIo->AllocateBuffer
and map the buffer with EfiPciIoOperationBusMasterCommonBuffer,
then the unmap and map operations can be removed.

///
/// Provides both read and write access to system memory by
/// both the processor and a bus master. The buffer is coherent
/// from both the processor's and the bus master's point of view.
///
EfiPciIoOperationBusMasterCommonBuffer,

Test done:
USB KB works normally.
USB disk read/write works normally.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
2018-10-28 21:20:08 +08:00
Star Zeng 6681582dcc MdeModulePkg XhciDxe: Extract new XhciInsertAsyncIntTransfer function
V3:
Match function parameter name and description between
XhciSched.c and XhciSched.h.

V2:
Add the missing "FreePool (Data);".
Remove the unnecessary indentation change.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1274

Extract new XhciInsertAsyncIntTransfer function from
XhcAsyncInterruptTransfer.

It is code preparation for following patch,
no essential functional change.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
2018-10-28 21:20:06 +08:00
Star Zeng 4a723d3d7f MdeModulePkg Xhci: Handle value 5 in Port Speed field of PORTSC
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1267

The value 5 Port Speed field of PORTSC is new defined in
XHCI 1.1 spec November 2017.

This patch updates XhciDxe and XhciPei to handle it, otherwise
the USB 3.1 device may not be recognized with the XHCI controller
following XHCI 1.1 spec November 2017.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2018-10-23 11:17:32 +08:00
Star Zeng fed6cf25b8 MdeModulePkg XhciDxe: Assign Usb2Hc.XXXRevision based on SBRN
Current hard code Usb2Hc.XXXRevision may be not accurate.
This patch updates code to assign Usb2Hc.XXXRevision based on
SBRN (Serial Bus Release Number, PCI configuration space offset
0x60) although there is no code consuming them.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2018-10-23 11:17:31 +08:00
Liming Gao d1102dba72 MdeModulePkg: Clean up source files
1. Do not use tab characters
2. No trailing white space in one line
3. All files must end with CRLF

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2018-06-28 11:19:45 +08:00
Star Zeng 958a81813b MdeModulePkg Xhci: Also RecoverHaltedEndpoint for BABBLE_ERROR
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=644

According to XHCI spec:
4.10.2.1 Stall Error

4.10.2.4 Babble Detected Error
When a device transmits more data on the USB than the host controller
is expecting for a transaction, it is defined to be babbling.
In general, this is called a Babble Error. When a device sends more
data than the TD Transfer Size bytes (TD Babble), unexpected activity
that persists beyond a specified point in a (micro)frame (Frame Babble),
or a packet greater than Max Packet Size (Packet Babble), the host
controller shall set the Babble Detected Error in the Completion Code
field of the TRB, generate an Error Event, and halt the endpoint
(refer to Section 4.10.2.1).

This patch is to also check for EFI_USB_ERR_BABBLE error returned as
a TransferResult and then proceed to XhcRecoverhaltedEndPoint.

Cc: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2017-07-26 16:06:19 +08:00
Ruiyu Ni 49be9c3c20 MdeModulePkg/XhciDxe: Check timeout URB again after stopping endpoint
This fixes BULK data loss when transfer is detected as timeout but
finished just before stopping endpoint.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
2017-07-05 11:31:06 +08:00
Ruiyu Ni 41fb8ce939 MdeModulePkg/XhciDxe: Separate common logic to XhcTransfer
The patch separates the common logic in XhcControlTransfer,
XhcBulkTransfer and XhcSyncIntTransfer to a sub-routine
XhcTransfer. It doesn't have functionality impact.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
2017-07-05 11:31:06 +08:00
Gary Lin ed356b9e80 MdeModulePkg/Bus: Fix typos in comments
- TURE -> TRUE
- stoping -> stopping
- doule -> double
- Peroidic -> Periodic
- stardard -> standard
- a a -> a
- reseting -> resetting
- excute -> execute
- connectted -> connected
- Sumbit -> Submit

Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2016-10-27 09:11:16 +08:00
Ard Biesheuvel 5c1b371a88 MdeModulePkg/XhciDxe: enable 64-bit PCI DMA
PCI controller drivers must set the EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE
attribute if the controller supports 64-bit DMA addressing.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Feng Tian <feng.tian@Intel.com>
2016-09-06 15:40:49 +01:00
Feng Tian b9953b6506 MdeModulePkg/Usb: Fix wrong condition judgment to support usb3.1 dev
The bcdUSB value of usb3.1 is 0x0310, we update the condition judgment
to get correct max packet size for usb3.1 dev.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2016-04-21 15:53:14 +08:00
Feng Tian 12e6c7381d MdeModulePkg/Xhci: Remove TDs from transfer ring when timeout happens
The error handling for timeout case is enhanced to remove TDs from
transfer ring. The original code only removed s/w URB, but the h/w
transfer descriptor TDs didn't get removed. It would cause data lost
for data stream peripheral, such as usb-to-serial device, from the
s/w perspective.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Baraneedharan Anbazhagan <anbazhagan@hp.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18313 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-26 01:19:09 +00:00
Feng Tian 3cf6450eb5 MdeModulePkg/Usb: Adjust TPL to not block async transfer during usb enum.
EDKII usb stack is using a TPL_CALLBACK timer to monitor async transfer
request and signal event if it's done. As usb enumeration and usb mass
storage block i/o read/write runs on TPL_CALLBACK and TPL_NOTIFY level
respectively, It blocks usb async transfer requests, usually usb mouse
/use kb, getting time to run.

Without this change, user couldn't get usb mouse/kb state in time (will
show a little lag from UI view) when there is other usb transactions, such
as a new usb device inserted.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18169 6f19259b-4bc3-4df7-8a09-765794883524
2015-08-06 07:13:16 +00:00
Feng Tian c5fcd77f73 MdeModulePkg/Usb: Remove unnecessary direction restriction on UsbHc2.SyncInterruptTransfer().
The restriction of UsbHc2.SyncInterruptTransfer() on interrupt transfer direction is removed. This interface could support Interrupt IN/OUT now.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17041 6f19259b-4bc3-4df7-8a09-765794883524
2015-03-12 05:41:54 +00:00
Feng Tian 6e1e540554 1) Add type cast for better coding style.
2) replace StrCpy() usage in Variable driver with StrnCpy().

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15770 6f19259b-4bc3-4df7-8a09-765794883524
2014-08-07 08:54:34 +00:00
Chen Fan e364478661 Fixed typos: hanlder should be handler.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15642 6f19259b-4bc3-4df7-8a09-765794883524
2014-07-09 03:51:56 +00:00
Star Zeng e1f2dfec34 MdeModulePkg XhciDxe: XHCI multiple interface alternate setting support.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15617 6f19259b-4bc3-4df7-8a09-765794883524
2014-07-04 03:30:46 +00:00
Tian, Hot 4b738c76f5 Fix CRLF format
Signed-off-by: Tian, Hot <hot.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15155 6f19259b-4bc3-4df7-8a09-765794883524
2014-01-22 08:38:50 +00:00
Feng Tian ddc0be5866 MdeModulePkg/XhciDxe: Fix ICC compiler build warning.
Signed-off-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14976 6f19259b-4bc3-4df7-8a09-765794883524
2013-12-13 01:43:27 +00:00
Feng Tian 0f58371b5d MdeModulePkg/Usb: All h/w related stop operation at DriverBindingStop() should be behind s/w related stop operation, which could avoid h/w not working if s/w stop operation fails.
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14927 6f19259b-4bc3-4df7-8a09-765794883524
2013-12-03 07:04:08 +00:00
Feng Tian c3f44a7708 MdeModulePkg/UsbBus&XhciDxe: Solve a bug that 2 or more tiers SS hubs with SS devices may have no response.
1.Port reset process may not be proper for some vendor's SS hubs. If the corresponding port shows the reset has been done by C_RESET bit we have to skip the whole reset process for attached devices.
2.Clean C_BH_RESET bit immediately to avoid usb timer entering too many times when 5 tiers hubs are connected.
3.Stop checking URB if there is an error happened.
4.Better error handling for fast hot-plug.

Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14889 6f19259b-4bc3-4df7-8a09-765794883524
2013-11-22 07:46:00 +00:00
Sergey Isakov 74b04490da MdeModulePkg/XhciDxe: Usb legacy support feature is optional. For those usb 3.0 devices which doesn’t support this feature, should directly return and not touch corresponding registers
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
Signed-off-by: Tian, Feng <feng.tian@intel.com>
Reviewed-by:   Li, Elvin <elvin.li@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14776 6f19259b-4bc3-4df7-8a09-765794883524
2013-10-15 06:13:14 +00:00
Elvin Li 5bcb62a409 Just like EhciDxe, do not reset host controller when debug capability is enabled in XhciDxe driver.
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14760 6f19259b-4bc3-4df7-8a09-765794883524
2013-10-09 08:30:59 +00:00
Elvin Li 260fbf5340 Remove several ASSERT in XhciDxe to allow error status happen then do error handling.
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14574 6f19259b-4bc3-4df7-8a09-765794883524
2013-08-21 03:46:01 +00:00
Elvin Li 1847ed0bfd Update XHCI driver to use PCI IO AllocateBuffer/Map/Unmap to do DMA operation.
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14546 6f19259b-4bc3-4df7-8a09-765794883524
2013-08-12 08:51:55 +00:00
erictian 11249a7339 MdeMdeModulePkg/Xhci: Clear BIOS_OWN semaphore before halting XHCI controller
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Steven Shi <steven.shi@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14339 6f19259b-4bc3-4df7-8a09-765794883524
2013-05-10 05:23:39 +00:00
erictian 20bcb757d2 MdeMdeModulePkg/Usb: Fixed two usb issues
1.Fix the bug in interface parser logic for usb camera device. Reserve device address if the device doesn’t get disconnected.
2.Some usb 1.1 devices require the context evaluation immediately with actual max packet size after detecting the device max packet size.

Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14226 6f19259b-4bc3-4df7-8a09-765794883524
2013-03-29 06:53:57 +00:00
erictian b3b1e97b55 MdeMdeModulePkg/Xhci: Fix a wrong conditional judgment which bring assertion with 1.0 hub.
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Elvin Li <elvin.li@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14021 6f19259b-4bc3-4df7-8a09-765794883524
2012-12-25 06:31:41 +00:00
li-elvin 44c56530b3 Update comments for functions UhciAllocateDev, EhcCreateUsb2Hc and XhcCreateUsbHc.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13913 6f19259b-4bc3-4df7-8a09-765794883524
2012-11-02 00:58:15 +00:00
li-elvin 37623a5c02 Add missing status code in several modules.
Signed-off-by: Li Elvin <elvin.li@intel.com>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>
Reviewed-by: Ni Ruiyu <ruiyu.ni@intel.com>
Reviewed-by: Gao Liming <liming.gao@intel.com>
Reviewed-by: Tian Feng <feng.tian@intel.com>
Reviewed-by: Fan Jeff <jeff.fan@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13890 6f19259b-4bc3-4df7-8a09-765794883524
2012-10-30 04:23:40 +00:00
erictian a50f7c4c09 MdeModulePkg/XhciDxe: Event Ring traverse algorithm enhancement to avoid that those completed async transfer events don't get handled in time and are flushed by newer coming events.
Signed-off-by: erictian
Reviewed-by: li-elvin


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13145 6f19259b-4bc3-4df7-8a09-765794883524
2012-03-27 12:07:38 +00:00
erictian 16d718a55b MdeModulePkg: add support for ORICO PEUS3-2P card
1) Fix a bug on missing hub context evaluation operation.
2) If the usb keyboard device configuration has been set successfully, then don’t set configuration again.

Signed-off-by: erictian
Reviewed-by: li-elvin


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13087 6f19259b-4bc3-4df7-8a09-765794883524
2012-03-07 08:39:35 +00:00
erictian 6b4483cdbd MdeModulePkg: The patch eliminates two assumptions
1) XHCI host controller hw always provides more than 5 interrupters.
Now using interrupter 0 to accommodate all received events.
2) XHCI host controller hw always provides 32bytes context size.
Now it dynamically detect context size and construct it.

also solved several issues:
1) Divides 64byte width register access to two 32bit registers access because some XHCI chipsets cannot support a single 64bit access.
2) Remove halt host controller statement in UsbBusDriverBindingStop(). It has been done by host controller’s DriverBindingStop(). And XhciDriverBindingStop() need XHCI host controller is in running state because it need execute DISABLE_SLOT cmd to release h/w resource.

signed-off-by: erictian
Reviewed-by: li-elvin

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12785 6f19259b-4bc3-4df7-8a09-765794883524
2011-11-25 08:08:54 +00:00
jljusten 7538d53684 MdeModulePkg: Remove variables that are set, but not used
GCC 4.6 generates a warning when a variable is set,
but never used.

Signed-off-by: jljusten
Reviewed-by: lgao4
Reviewed-by: erictian
Reviewed-by: rsun3

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12617 6f19259b-4bc3-4df7-8a09-765794883524
2011-10-31 15:58:05 +00:00
erictian a9292c1363 1) remove wrong global variable usage because it will bring data corrupt if there are multiple XHCI host controllers.
2) coding style clean up.

Signed-off-by: erictian
Reviewed-by: ydong10
Reviewed-by: jshi19

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12351 6f19259b-4bc3-4df7-8a09-765794883524
2011-09-14 12:13:03 +00:00
erictian ce9b590040 Fixed build error reported by ICC and GCC
Signed-off-by: erictian
Reviewed-by: li-elvin


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12209 6f19259b-4bc3-4df7-8a09-765794883524
2011-08-25 10:19:11 +00:00
erictian 92870c983c Enabling usb3.0 XHCI support.
Signed-off-by: erictian
Reviewed-by: jshi19

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12185 6f19259b-4bc3-4df7-8a09-765794883524
2011-08-23 14:36:33 +00:00