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Add doxygen style comments for functions in DxeMain.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5189 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2008-05-09 07:08:30 +00:00
parent dc2e539a34
commit 162ed59443
38 changed files with 6088 additions and 7797 deletions
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594
MdeModulePkg/Core/Dxe/Dispatcher/Dispatcher.c
View File

@@ -1,4 +1,4 @@
/**@file
/** @file
DXE Dispatcher.
Step #1 - When a FV protocol is added to the system every driver in the FV
@@ -26,7 +26,7 @@
Depex - Dependency Expresion.
SOR - Schedule On Request - Don't schedule if this bit is set.
Copyright (c) 2006 - 2007, Intel Corporation
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -94,12 +94,40 @@ FV_FILEPATH_DEVICE_PATH mFvDevicePath;
//
// Function Prototypes
//
/**
Insert InsertedDriverEntry onto the mScheduledQueue. To do this you
must add any driver with a before dependency on InsertedDriverEntry first.
You do this by recursively calling this routine. After all the Befores are
processed you can add InsertedDriverEntry to the mScheduledQueue.
Then you can add any driver with an After dependency on InsertedDriverEntry
by recursively calling this routine.
@param InsertedDriverEntry The driver to insert on the ScheduledLink Queue
**/
STATIC
VOID
CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (
IN EFI_CORE_DRIVER_ENTRY *InsertedDriverEntry
);
/**
Event notification that is fired every time a FV dispatch protocol is added.
More than one protocol may have been added when this event is fired, so you
must loop on CoreLocateHandle () to see how many protocols were added and
do the following to each FV:
If the Fv has already been processed, skip it. If the Fv has not been
processed then mark it as being processed, as we are about to process it.
Read the Fv and add any driver in the Fv to the mDiscoveredList.The
mDiscoveredList is never free'ed and contains variables that define
the other states the DXE driver transitions to..
While you are at it read the A Priori file into memory.
Place drivers in the A Priori list onto the mScheduledQueue.
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
**/
STATIC
VOID
EFIAPI
@@ -108,6 +136,19 @@ CoreFwVolEventProtocolNotify (
IN VOID *Context
);
/**
Convert FvHandle and DriverName into an EFI device path
@param Fv Fv protocol, needed to read Depex info out of
FLASH.
@param FvHandle Handle for Fv, needed in the
EFI_CORE_DRIVER_ENTRY so that the PE image can be
read out of the FV at a later time.
@param DriverName Name of driver to add to mDiscoveredList.
@return Pointer to device path constructed from FvHandle and DriverName
**/
STATIC
EFI_DEVICE_PATH_PROTOCOL *
CoreFvToDevicePath (
@@ -116,6 +157,26 @@ CoreFvToDevicePath (
IN EFI_GUID *DriverName
);
/**
Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,
and initilize any state variables. Read the Depex from the FV and store it
in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.
The Discovered list is never free'ed and contains booleans that represent the
other possible DXE driver states.
@param Fv Fv protocol, needed to read Depex info out of
FLASH.
@param FvHandle Handle for Fv, needed in the
EFI_CORE_DRIVER_ENTRY so that the PE image can be
read out of the FV at a later time.
@param DriverName Name of driver to add to mDiscoveredList.
@retval EFI_SUCCESS If driver was added to the mDiscoveredList.
@retval EFI_ALREADY_STARTED The driver has already been started. Only one
DriverName may be active in the system at any one
time.
**/
STATIC
EFI_STATUS
CoreAddToDriverList (
@@ -124,6 +185,18 @@ CoreAddToDriverList (
IN EFI_GUID *DriverName
);
/**
Get the driver from the FV through driver name, and produce a FVB protocol on FvHandle.
@param Fv The FIRMWARE_VOLUME protocol installed on the FV.
@param FvHandle The handle which FVB protocol installed on.
@param DriverName The driver guid specified.
@retval EFI_OUT_OF_RESOURCES No enough memory or other resource.
@retval EFI_VOLUME_CORRUPTED Corrupted volume.
@retval EFI_SUCCESS Function successfully returned.
**/
STATIC
EFI_STATUS
CoreProcessFvImageFile (
@@ -132,81 +205,52 @@ CoreProcessFvImageFile (
IN EFI_GUID *DriverName
);
/**
Enter critical section by gaining lock on mDispatcherLock.
**/
STATIC
VOID
CoreAcquireDispatcherLock (
VOID
)
/*++
Routine Description:
Enter critical section by gaining lock on mDispatcherLock
Arguments:
None
Returns:
None
--*/
{
CoreAcquireLock (&mDispatcherLock);
}
/**
Exit critical section by releasing lock on mDispatcherLock.
**/
STATIC
VOID
CoreReleaseDispatcherLock (
VOID
)
/*++
Routine Description:
Exit critical section by releasing lock on mDispatcherLock
Arguments:
None
Returns:
None
--*/
{
CoreReleaseLock (&mDispatcherLock);
}
/**
Read Depex and pre-process the Depex for Before and After. If Section Extraction
protocol returns an error via ReadSection defer the reading of the Depex.
@param DriverEntry Driver to work on.
@retval EFI_SUCCESS Depex read and preprossesed
@retval EFI_PROTOCOL_ERROR The section extraction protocol returned an error
and Depex reading needs to be retried.
@retval Error DEPEX not found.
**/
STATIC
EFI_STATUS
CoreGetDepexSectionAndPreProccess (
IN EFI_CORE_DRIVER_ENTRY *DriverEntry
)
/*++
Routine Description:
Read Depex and pre-process the Depex for Before and After. If Section Extraction
protocol returns an error via ReadSection defer the reading of the Depex.
Arguments:
DriverEntry - Driver to work on.
Returns:
EFI_SUCCESS - Depex read and preprossesed
EFI_PROTOCOL_ERROR - The section extraction protocol returned an error and
Depex reading needs to be retried.
Other Error - DEPEX not found.
--*/
{
EFI_STATUS Status;
EFI_SECTION_TYPE SectionType;
@@ -255,6 +299,21 @@ Returns:
return Status;
}
/**
Check every driver and locate a matching one. If the driver is found, the Unrequested
state flag is cleared.
@param FirmwareVolumeHandle The handle of the Firmware Volume that contains
the firmware file specified by DriverName.
@param DriverName The Driver name to put in the Dependent state.
@retval EFI_SUCCESS The DriverName was found and it's SOR bit was
cleared
@retval EFI_NOT_FOUND The DriverName does not exist or it's SOR bit was
not set.
**/
EFI_DXESERVICE
EFI_STATUS
EFIAPI
@@ -262,27 +321,6 @@ CoreSchedule (
IN EFI_HANDLE FirmwareVolumeHandle,
IN EFI_GUID *DriverName
)
/*++
Routine Description:
Check every driver and locate a matching one. If the driver is found, the Unrequested
state flag is cleared.
Arguments:
FirmwareVolumeHandle - The handle of the Firmware Volume that contains the firmware
file specified by DriverName.
DriverName - The Driver name to put in the Dependent state.
Returns:
EFI_SUCCESS - The DriverName was found and it's SOR bit was cleared
EFI_NOT_FOUND - The DriverName does not exist or it's SOR bit was not set.
--*/
{
LIST_ENTRY *Link;
EFI_CORE_DRIVER_ENTRY *DriverEntry;
@@ -310,6 +348,19 @@ Returns:
}
/**
Convert a driver from the Untrused back to the Scheduled state
@param FirmwareVolumeHandle The handle of the Firmware Volume that contains
the firmware file specified by DriverName.
@param DriverName The Driver name to put in the Scheduled state
@retval EFI_SUCCESS The file was found in the untrusted state, and it
was promoted to the trusted state.
@retval EFI_NOT_FOUND The file was not found in the untrusted state.
**/
EFI_DXESERVICE
EFI_STATUS
EFIAPI
@@ -317,27 +368,6 @@ CoreTrust (
IN EFI_HANDLE FirmwareVolumeHandle,
IN EFI_GUID *DriverName
)
/*++
Routine Description:
Convert a driver from the Untrused back to the Scheduled state
Arguments:
FirmwareVolumeHandle - The handle of the Firmware Volume that contains the firmware
file specified by DriverName.
DriverName - The Driver name to put in the Scheduled state
Returns:
EFI_SUCCESS - The file was found in the untrusted state, and it was promoted
to the trusted state.
EFI_NOT_FOUND - The file was not found in the untrusted state.
--*/
{
LIST_ENTRY *Link;
EFI_CORE_DRIVER_ENTRY *DriverEntry;
@@ -366,37 +396,29 @@ Returns:
}
/**
This is the main Dispatcher for DXE and it exits when there are no more
drivers to run. Drain the mScheduledQueue and load and start a PE
image for each driver. Search the mDiscoveredList to see if any driver can
be placed on the mScheduledQueue. If no drivers are placed on the
mScheduledQueue exit the function. On exit it is assumed the Bds()
will be called, and when the Bds() exits the Dispatcher will be called
again.
NONE
@retval EFI_ALREADY_STARTED The DXE Dispatcher is already running
@retval EFI_NOT_FOUND No DXE Drivers were dispatched
@retval EFI_SUCCESS One or more DXE Drivers were dispatched
**/
EFI_DXESERVICE
EFI_STATUS
EFIAPI
CoreDispatcher (
VOID
)
/*++
Routine Description:
This is the main Dispatcher for DXE and it exits when there are no more
drivers to run. Drain the mScheduledQueue and load and start a PE
image for each driver. Search the mDiscoveredList to see if any driver can
be placed on the mScheduledQueue. If no drivers are placed on the
mScheduledQueue exit the function. On exit it is assumed the Bds()
will be called, and when the Bds() exits the Dispatcher will be called
again.
Arguments:
NONE
Returns:
EFI_ALREADY_STARTED - The DXE Dispatcher is already running
EFI_NOT_FOUND - No DXE Drivers were dispatched
EFI_SUCCESS - One or more DXE Drivers were dispatched
--*/
{
EFI_STATUS Status;
EFI_STATUS ReturnStatus;
@@ -524,31 +546,23 @@ Returns:
return ReturnStatus;
}
/**
Insert InsertedDriverEntry onto the mScheduledQueue. To do this you
must add any driver with a before dependency on InsertedDriverEntry first.
You do this by recursively calling this routine. After all the Befores are
processed you can add InsertedDriverEntry to the mScheduledQueue.
Then you can add any driver with an After dependency on InsertedDriverEntry
by recursively calling this routine.
@param InsertedDriverEntry The driver to insert on the ScheduledLink Queue
**/
STATIC
VOID
CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (
IN EFI_CORE_DRIVER_ENTRY *InsertedDriverEntry
)
/*++
Routine Description:
Insert InsertedDriverEntry onto the mScheduledQueue. To do this you
must add any driver with a before dependency on InsertedDriverEntry first.
You do this by recursively calling this routine. After all the Befores are
processed you can add InsertedDriverEntry to the mScheduledQueue.
Then you can add any driver with an After dependency on InsertedDriverEntry
by recursively calling this routine.
Arguments:
InsertedDriverEntry - The driver to insert on the ScheduledLink Queue
Returns:
NONE
--*/
{
LIST_ENTRY *Link;
EFI_CORE_DRIVER_ENTRY *DriverEntry;
@@ -595,28 +609,22 @@ Returns:
}
}
/**
Return TRUE if the Fv has been processed, FALSE if not.
@param FvHandle The handle of a FV that's being tested
@retval TRUE Fv protocol on FvHandle has been processed
@retval FALSE Fv protocol on FvHandle has not yet been
processed
**/
STATIC
BOOLEAN
FvHasBeenProcessed (
IN EFI_HANDLE FvHandle
)
/*++
Routine Description:
Return TRUE if the Fv has been processed, FALSE if not.
Arguments:
FvHandle - The handle of a FV that's being tested
Returns:
TRUE - Fv protocol on FvHandle has been processed
FALSE - Fv protocol on FvHandle has not yet been processed
--*/
{
LIST_ENTRY *Link;
KNOWN_HANDLE *KnownHandle;
@@ -630,28 +638,20 @@ Returns:
return FALSE;
}
/**
Remember that Fv protocol on FvHandle has had it's drivers placed on the
mDiscoveredList. This fucntion adds entries on the mFvHandleList. Items are
never removed/freed from the mFvHandleList.
@param FvHandle The handle of a FV that has been processed
**/
STATIC
VOID
FvIsBeingProcesssed (
IN EFI_HANDLE FvHandle
)
/*++
Routine Description:
Remember that Fv protocol on FvHandle has had it's drivers placed on the
mDiscoveredList. This fucntion adds entries on the mFvHandleList. Items are
never removed/freed from the mFvHandleList.
Arguments:
FvHandle - The handle of a FV that has been processed
Returns:
None
--*/
{
KNOWN_HANDLE *KnownHandle;
@@ -665,6 +665,20 @@ Returns:
/**
Convert FvHandle and DriverName into an EFI device path
@param Fv Fv protocol, needed to read Depex info out of
FLASH.
@param FvHandle Handle for Fv, needed in the
EFI_CORE_DRIVER_ENTRY so that the PE image can be
read out of the FV at a later time.
@param DriverName Name of driver to add to mDiscoveredList.
@return Pointer to device path constructed from FvHandle and DriverName
**/
STATIC
EFI_DEVICE_PATH_PROTOCOL *
CoreFvToDevicePath (
@@ -672,26 +686,6 @@ CoreFvToDevicePath (
IN EFI_HANDLE FvHandle,
IN EFI_GUID *DriverName
)
/*++
Routine Description:
Convert FvHandle and DriverName into an EFI device path
Arguments:
Fv - Fv protocol, needed to read Depex info out of FLASH.
FvHandle - Handle for Fv, needed in the EFI_CORE_DRIVER_ENTRY so that the
PE image can be read out of the FV at a later time.
DriverName - Name of driver to add to mDiscoveredList.
Returns:
Pointer to device path constructed from FvHandle and DriverName
--*/
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *FvDevicePath;
@@ -723,39 +717,33 @@ Returns:
/**
Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,
and initilize any state variables. Read the Depex from the FV and store it
in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.
The Discovered list is never free'ed and contains booleans that represent the
other possible DXE driver states.
@param Fv Fv protocol, needed to read Depex info out of
FLASH.
@param FvHandle Handle for Fv, needed in the
EFI_CORE_DRIVER_ENTRY so that the PE image can be
read out of the FV at a later time.
@param DriverName Name of driver to add to mDiscoveredList.
@retval EFI_SUCCESS If driver was added to the mDiscoveredList.
@retval EFI_ALREADY_STARTED The driver has already been started. Only one
DriverName may be active in the system at any one
time.
**/
EFI_STATUS
CoreAddToDriverList (
IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,
IN EFI_HANDLE FvHandle,
IN EFI_GUID *DriverName
)
/*++
Routine Description:
Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,
and initilize any state variables. Read the Depex from the FV and store it
in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.
The Discovered list is never free'ed and contains booleans that represent the
other possible DXE driver states.
Arguments:
Fv - Fv protocol, needed to read Depex info out of FLASH.
FvHandle - Handle for Fv, needed in the EFI_CORE_DRIVER_ENTRY so that the
PE image can be read out of the FV at a later time.
DriverName - Name of driver to add to mDiscoveredList.
Returns:
EFI_SUCCESS - If driver was added to the mDiscoveredList.
EFI_ALREADY_STARTED - The driver has already been started. Only one DriverName
may be active in the system at any one time.
--*/
{
EFI_CORE_DRIVER_ENTRY *DriverEntry;
@@ -784,32 +772,25 @@ Returns:
return EFI_SUCCESS;
}
/**
Check if a FV Image type file (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) is
described by a EFI_HOB_FIRMWARE_VOLUME2 Hob.
@param FvHandle The handle which FVB protocol installed on.
@param DriverName The driver guid specified.
@retval TRUE This file is found in a EFI_HOB_FIRMWARE_VOLUME2
Hob.
@retval FALSE Not found.
**/
STATIC
BOOLEAN
FvFoundInHobFv2 (
IN EFI_HANDLE FvHandle,
IN CONST EFI_GUID *DriverName
)
/*++
Routine Description:
Check if a FV Image type file (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) is
described by a EFI_HOB_FIRMWARE_VOLUME2 Hob.
Arguments:
FvHandle - The handle which FVB protocol installed on.
DriverName - The driver guid specified.
Returns:
TRUE - This file is found in a EFI_HOB_FIRMWARE_VOLUME2 Hob.
FALSE - Not found.
--*/
{
EFI_PEI_HOB_POINTERS HobFv2;
@@ -826,34 +807,25 @@ Returns:
}
/**
Get the driver from the FV through driver name, and produce a FVB protocol on FvHandle.
@param Fv The FIRMWARE_VOLUME protocol installed on the FV.
@param FvHandle The handle which FVB protocol installed on.
@param DriverName The driver guid specified.
@retval EFI_OUT_OF_RESOURCES No enough memory or other resource.
@retval EFI_VOLUME_CORRUPTED Corrupted volume.
@retval EFI_SUCCESS Function successfully returned.
**/
EFI_STATUS
CoreProcessFvImageFile (
IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,
IN EFI_HANDLE FvHandle,
IN EFI_GUID *DriverName
)
/*++
Routine Description:
Get the driver from the FV through driver name, and produce a FVB protocol on FvHandle.
Arguments:
Fv - The FIRMWARE_VOLUME protocol installed on the FV.
FvHandle - The handle which FVB protocol installed on.
DriverName - The driver guid specified.
Returns:
EFI_OUT_OF_RESOURCES - No enough memory or other resource.
EFI_VOLUME_CORRUPTED - Corrupted volume.
EFI_SUCCESS - Function successfully returned.
--*/
{
EFI_STATUS Status;
EFI_SECTION_TYPE SectionType;
@@ -932,6 +904,24 @@ Returns:
return Status;
}
/**
Event notification that is fired every time a FV dispatch protocol is added.
More than one protocol may have been added when this event is fired, so you
must loop on CoreLocateHandle () to see how many protocols were added and
do the following to each FV:
If the Fv has already been processed, skip it. If the Fv has not been
processed then mark it as being processed, as we are about to process it.
Read the Fv and add any driver in the Fv to the mDiscoveredList.The
mDiscoveredList is never free'ed and contains variables that define
the other states the DXE driver transitions to..
While you are at it read the A Priori file into memory.
Place drivers in the A Priori list onto the mScheduledQueue.
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
**/
STATIC
VOID
EFIAPI
@@ -939,36 +929,6 @@ CoreFwVolEventProtocolNotify (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
Event notification that is fired every time a FV dispatch protocol is added.
More than one protocol may have been added when this event is fired, so you
must loop on CoreLocateHandle () to see how many protocols were added and
do the following to each FV:
If the Fv has already been processed, skip it. If the Fv has not been
processed then mark it as being processed, as we are about to process it.
Read the Fv and add any driver in the Fv to the mDiscoveredList.The
mDiscoveredList is never free'ed and contains variables that define
the other states the DXE driver transitions to..
While you are at it read the A Priori file into memory.
Place drivers in the A Priori list onto the mScheduledQueue.
Arguments:
Event - The Event that is being processed, not used.
Context - Event Context, not used.
Returns:
None
--*/
{
EFI_STATUS Status;
EFI_STATUS GetNextFileStatus;
@@ -1181,26 +1141,16 @@ Returns:
}
/**
Initialize the dispatcher. Initialize the notification function that runs when
a FV protocol is added to the system.
**/
VOID
CoreInitializeDispatcher (
VOID
)
/*++
Routine Description:
Initialize the dispatcher. Initialize the notification function that runs when
a FV protocol is added to the system.
Arguments:
NONE
Returns:
NONE
--*/
{
mFwVolEvent = CoreCreateProtocolNotifyEvent (
&gEfiFirmwareVolume2ProtocolGuid,
@@ -1215,26 +1165,16 @@ Returns:
//
// Function only used in debug builds
//
/**
Traverse the discovered list for any drivers that were discovered but not loaded
because the dependency experessions evaluated to false.
**/
VOID
CoreDisplayDiscoveredNotDispatched (
VOID
)
/*++
Routine Description:
Traverse the discovered list for any drivers that were discovered but not loaded
because the dependency experessions evaluated to false
Arguments:
NONE
Returns:
NONE
--*/
{
LIST_ENTRY *Link;
EFI_CORE_DRIVER_ENTRY *DriverEntry;
@@ -1242,7 +1182,7 @@ Returns:
for (Link = mDiscoveredList.ForwardLink;Link !=&mDiscoveredList; Link = Link->ForwardLink) {
DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);
if (DriverEntry->Dependent) {
DEBUG ((EFI_D_LOAD, "Driver %g was discovered but not loaded!!\n", &DriverEntry->FileName));
DEBUG ((DEBUG_LOAD, "Driver %g was discovered but not loaded!!\n", &DriverEntry->FileName));
}
}
}