diff options
Diffstat (limited to 'MdePkg')
| -rw-r--r-- | MdePkg/Include/Library/UefiLib.h | 206 | ||||
| -rw-r--r-- | MdePkg/Library/UefiLib/Console.c | 2 | ||||
| -rw-r--r-- | MdePkg/Library/UefiLib/UefiDriverModel.c | 26 | ||||
| -rw-r--r-- | MdePkg/Library/UefiLib/UefiLib.c | 279 | ||||
| -rw-r--r-- | MdePkg/Library/UefiLib/UefiNotTiano.c | 42 | ||||
| -rw-r--r-- | MdePkg/Library/UefiRuntimeLib/RuntimeLib.c | 22 | ||||
| -rw-r--r-- | MdePkg/Library/UefiRuntimeLib/RuntimeService.c | 172 |
7 files changed, 433 insertions, 316 deletions
diff --git a/MdePkg/Include/Library/UefiLib.h b/MdePkg/Include/Library/UefiLib.h index eeffdc052f..84c1375f63 100644 --- a/MdePkg/Include/Library/UefiLib.h +++ b/MdePkg/Include/Library/UefiLib.h @@ -99,10 +99,15 @@ typedef struct { /**
- This function searches the list of configuration tables stored in the EFI System
- Table for a table with a GUID that matches TableGuid. If a match is found,
- then a pointer to the configuration table is returned in Table, and EFI_SUCCESS
- is returned. If a matching GUID is not found, then EFI_NOT_FOUND is returned.
+ Retrieves a pointer to the system configuration table from the EFI System Table
+ based on a specified GUID.
+
+ This function searches the list of configuration tables stored in the EFI System Table
+ for a table with a GUID that matches TableGuid. If a match is found, then a pointer to
+ the configuration table is returned in Table., and EFI_SUCCESS is returned. If a matching GUID
+ is not found, then EFI_NOT_FOUND is returned.
+ If TableGuid is NULL, then ASSERT().
+ If Table is NULL, then ASSERT().
@param TableGuid Pointer to table's GUID type..
@param Table Pointer to the table associated with TableGuid in the EFI System Table.
@@ -119,18 +124,28 @@ EfiGetSystemConfigurationTable ( );
/**
- This function causes the notification function to be executed for every protocol
- of type ProtocolGuid instance that exists in the system when this function is
- invoked. In addition, every time a protocol of type ProtocolGuid instance is
- installed or reinstalled, the notification function is also executed.
+ Creates and returns a notification event and registers that event with all the protocol
+ instances specified by ProtocolGuid.
+
+ This function causes the notification function to be executed for every protocol of type
+ ProtocolGuid instance that exists in the system when this function is invoked.
+ In addition, every time a protocol of type ProtocolGuid instance is installed or reinstalled,
+ the notification function is also executed. This function returns the notification event
+ that was created.
+ If ProtocolGuid is NULL, then ASSERT().
+ If NotifyTpl is not a legal TPL value, then ASSERT().
+ If NotifyFunction is NULL, then ASSERT().
+ If Registration is NULL, then ASSERT().
@param ProtocolGuid Supplies GUID of the protocol upon whose installation the event is fired.
@param NotifyTpl Supplies the task priority level of the event notifications.
@param NotifyFunction Supplies the function to notify when the event is signaled.
@param NotifyContext The context parameter to pass to NotifyFunction.
@param Registration A pointer to a memory location to receive the registration value.
+ This value is passed to LocateHandle() to obtain new handles that
+ have been added that support the ProtocolGuid-specified protocol.
- @return The notification event that was created.
+ @return The notification event that was created.
**/
EFI_EVENT
@@ -144,9 +159,14 @@ EfiCreateProtocolNotifyEvent( );
/**
+ Creates a named event that can be signaled with EfiNamedEventSignal().
+
This function creates an event using NotifyTpl, NoifyFunction, and NotifyContext.
- This event is signaled with EfiNamedEventSignal(). This provide the ability for
- one or more listeners on the same event named by the GUID specified by Name.
+ This event is signaled with EfiNamedEventSignal(). This provides the ability for one or more
+ listeners on the same event named by the GUID specified by Name.
+ If Name is NULL, then ASSERT().
+ If NotifyTpl is not a legal TPL value, then ASSERT().
+ If NotifyFunction is NULL, then ASSERT().
@param Name Supplies GUID name of the event.
@param NotifyTpl Supplies the task priority level of the event notifications.
@@ -169,8 +189,11 @@ EfiNamedEventListen ( );
/**
- This function signals the named event specified by Name. The named event must
- have been created with EfiNamedEventListen().
+ Signals a named event created with EfiNamedEventListen().
+
+ This function signals the named event specified by Name. The named event must have been
+ created with EfiNamedEventListen().
+ If Name is NULL, then ASSERT().
@param Name Supplies GUID name of the event.
@@ -203,10 +226,14 @@ EfiGetCurrentTpl ( );
/**
+ Initializes a basic mutual exclusion lock.
+
This function initializes a basic mutual exclusion lock to the released state
and returns the lock. Each lock provides mutual exclusion access at its task
priority level. Since there is no preemption or multiprocessor support in EFI,
acquiring the lock only consists of raising to the locks TPL.
+ If Lock is NULL, then ASSERT().
+ If Priority is not a valid TPL value, then ASSERT().
@param Lock A pointer to the lock data structure to initialize.
@param Priority EFI TPL associated with the lock.
@@ -244,7 +271,6 @@ EfiInitializeLock ( then this macro evaluates the EFI_LOCK structure specified by Lock. If Lock
is not in the locked state, then DebugAssert() is called passing in the source
filename, source line number, and Lock.
-
If Lock is NULL, then ASSERT().
@param LockParameter A pointer to the lock to acquire.
@@ -262,9 +288,14 @@ EfiInitializeLock ( /**
+ Acquires ownership of a lock.
+
This function raises the system's current task priority level to the task
priority level of the mutual exclusion lock. Then, it places the lock in the
acquired state.
+ If Lock is NULL, then ASSERT().
+ If Lock is not initialized, then ASSERT().
+ If Lock is already in the acquired state, then ASSERT().
@param Lock A pointer to the lock to acquire.
@@ -276,9 +307,13 @@ EfiAcquireLock ( );
/**
+ Acquires ownership of a lock. If the lock is already owned , then an error is returned.
+
This function raises the system's current task priority level to the task
priority level of the mutual exclusion lock. Then, it attempts to place the
lock in the acquired state.
+ If Lock is NULL, then ASSERT().
+ If Lock is not initialized, then ASSERT().
@param Lock A pointer to the lock to acquire.
@@ -293,9 +328,14 @@ EfiAcquireLockOrFail ( );
/**
+ Releases ownership of a lock.
+
This function transitions a mutual exclusion lock from the acquired state to
the released state, and restores the system's task priority level to its
previous level.
+ If Lock is NULL, then ASSERT().
+ If Lock is not initialized, then ASSERT().
+ If Lock is already in the released state, then ASSERT().
@param Lock A pointer to the lock to release.
@@ -365,10 +405,11 @@ EfiTestChildHandle ( );
/**
- This function looks up a Unicode string in UnicodeStringTable. If Language is
- a member of SupportedLanguages and a Unicode string is found in UnicodeStringTable
- that matches the language code specified by Language, then it is returned in
- UnicodeString.
+ This function looks up a Unicode string in UnicodeStringTable.
+
+ If Language is a member of SupportedLanguages and a Unicode string is found in
+ UnicodeStringTable that matches the language code specified by Language, then it
+ is returned in UnicodeString.
@param Language A pointer to the ISO 639-2 language code for the
Unicode string to look up and return.
@@ -412,48 +453,38 @@ LookupUnicodeString ( @param Language A pointer to the ISO 639-2 or
RFC 3066 language code for the
Unicode string to look up and
- return.
-
+ return.
@param SupportedLanguages A pointer to the set of ISO
639-2 or RFC 3066 language
codes that the Unicode string
table supports. Language must
- be a member of this set.
-
+ be a member of this set.
@param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
+ Unicode strings.
@param UnicodeString A pointer to the Unicode
string from UnicodeStringTable
that matches the language
specified by Language.
-
@param Iso639Language Specify the language code
format supported. If true,
then the format follow ISO
639-2. If false, then it
follows RFC3066.
-
@retval EFI_SUCCESS The Unicode string that
matches the language specified
by Language was found in the
table of Unicoide strings
UnicodeStringTable, and it was
- returned in UnicodeString.
-
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
-
- @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
- @retval EFI_UNSUPPORTED UnicodeStringTable is NULL.
-
+ returned in UnicodeString.
+
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
+ @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
+ @retval EFI_UNSUPPORTED UnicodeStringTable is NULL.
@retval EFI_UNSUPPORTED The language specified by
Language is not a member
- ofSupportedLanguages.
-
- @retval EFI_UNSUPPORTED The language specified by
+ ofSupportedLanguages.
+ @retval EFI_UNSUPPORTED The language specified by
Language is not supported by
UnicodeStringTable.
@@ -470,6 +501,7 @@ LookupUnicodeString2 ( /**
This function adds a Unicode string to UnicodeStringTable.
+
If Language is a member of SupportedLanguages then UnicodeString is added to
UnicodeStringTable. New buffers are allocated for both Language and
UnicodeString. The contents of Language and UnicodeString are copied into
@@ -510,8 +542,8 @@ AddUnicodeString ( );
/**
-
This function adds a Unicode string to UnicodeStringTable.
+
If Language is a member of SupportedLanguages then
UnicodeString is added to UnicodeStringTable. New buffers are
allocated for both Language and UnicodeString. The contents
@@ -521,26 +553,21 @@ AddUnicodeString ( @param Language A pointer to the ISO 639-2 or
RFC 3066 language code for the
- Unicode string to add.
-
+ Unicode string to add.
@param SupportedLanguages A pointer to the set of ISO
639-2 or RFC 3066 language
codes that the Unicode string
table supports. Language must
- be a member of this set.
-
+ be a member of this set.
@param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
+ Unicode strings.
@param UnicodeString A pointer to the Unicode
- string to add.
-
+ string to add.
@param Iso639Language Specify the language code
format supported. If true,
then the format follow ISO
639-2. If false, then it
follows RFC3066.
-
@retval EFI_SUCCESS The Unicode string that
matches the language specified
by Language was found in the
@@ -548,22 +575,16 @@ AddUnicodeString ( UnicodeStringTable, and it was
returned in UnicodeString.
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is an empty string.
-
- @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is an empty string.
+ @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
@retval EFI_ALREADY_STARTED A Unicode string with language
Language is already present in
- UnicodeStringTable.
-
+ UnicodeStringTable.
@retval EFI_OUT_OF_RESOURCES There is not enough memory to
add another Unicode string to
- UnicodeStringTable.
-
+ UnicodeStringTable.
@retval EFI_UNSUPPORTED The language specified by
Language is not a member of
SupportedLanguages.
@@ -581,6 +602,7 @@ AddUnicodeString2 ( /**
This function frees the table of Unicode strings in UnicodeStringTable.
+
If UnicodeStringTable is NULL, then EFI_SUCCESS is returned.
Otherwise, each language code, and each Unicode string in the Unicode string
table are freed, and EFI_SUCCESS is returned.
@@ -614,6 +636,8 @@ GetGlyphWidth ( );
/**
+ Computes the display length of a Null-terminated Unicode String.
+
This function computes and returns the display length of
the Null-terminated Unicode string specified by String.
If String is NULL, then 0 is returned.
@@ -635,10 +659,12 @@ UnicodeStringDisplayLength ( // Functions that abstract early Framework contamination of UEFI.
//
/**
- Signal a Ready to Boot Event.
+ Create, Signal, and Close the Ready to Boot event using EfiSignalEventReadyToBoot().
- Create a Ready to Boot Event. Signal it and close it. This causes other
- events of the same event group to be signaled in other modules.
+ This function abstracts the signaling of the Ready to Boot Event. The Framework moved
+ from a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from
+ how this event is created to prevent to code form having to change with the version of
+ the specification supported.
**/
VOID
@@ -648,10 +674,12 @@ EfiSignalEventReadyToBoot ( );
/**
- Signal a Legacy Boot Event.
-
- Create a legacy Boot Event. Signal it and close it. This causes other
- events of the same event group to be signaled in other modules.
+ Create, Signal, and Close the Ready to Boot event using EfiSignalEventLegacyBoot().
+
+ This function abstracts the signaling of the Legacy Boot Event. The Framework moved from
+ a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from how
+ this event is created to prevent to code form having to change with the version of the
+ specification supported.
**/
VOID
@@ -766,13 +794,11 @@ EfiCreateEventReadyToBootEx ( Initialize a Firmware Volume (FV) Media Device Path node.
The Framework FwVol Device Path changed to conform to the UEFI 2.0 specification.
- This library function abstracts initializing a device path node.
-
+ This library function abstracts initializing a device path node.
Initialize the MEDIA_FW_VOL_FILEPATH_DEVICE_PATH data structure. This device
path changed in the DXE CIS version 0.92 in a non back ward compatible way to
not conflict with the UEFI 2.0 specification. This function abstracts the
differences from the caller.
-
If FvDevicePathNode is NULL, then ASSERT().
If NameGuid is NULL, then ASSERT().
@@ -792,7 +818,6 @@ EfiInitializeFwVolDevicepathNode ( The Framework FwVol Device Path changed to conform to the UEFI 2.0 specification.
This library function abstracts validating a device path node.
-
Check the MEDIA_FW_VOL_FILEPATH_DEVICE_PATH data structure to see if it's valid.
If it is valid, then return the GUID file name from the device path node. Otherwise,
return NULL. This device path changed in the DXE CIS version 0.92 in a non back ward
@@ -821,12 +846,12 @@ EfiGetNameGuidFromFwVolDevicePathNode ( characters that printed to ConOut. If the length of the formatted Unicode
string is greater than PcdUefiLibMaxPrintBufferSize, then only the first
PcdUefiLibMaxPrintBufferSize characters are sent to ConOut.
+ If Format is NULL, then ASSERT().
+ If Format is not aligned on a 16-bit boundary, then ASSERT().
@param Format Null-terminated Unicode format string.
@param ... Variable argument list whose contents are accessed based
on the format string specified by Format.
- If Format is NULL, then ASSERT().
- If Format is not aligned on a 16-bit boundary, then ASSERT().
@return Number of Unicode characters printed to ConOut.
@@ -847,12 +872,12 @@ Print ( characters that printed to StdErr. If the length of the formatted Unicode
string is greater than PcdUefiLibMaxPrintBufferSize, then only the first
PcdUefiLibMaxPrintBufferSize characters are sent to StdErr.
+ If Format is NULL, then ASSERT().
+ If Format is not aligned on a 16-bit boundary, then ASSERT().
@param Format Null-terminated Unicode format string.
@param ... Variable argument list whose contents are accessed based
on the format string specified by Format.
- If Format is NULL, then ASSERT().
- If Format is not aligned on a 16-bit boundary, then ASSERT().
@return Number of Unicode characters printed to StdErr.
@@ -873,12 +898,12 @@ ErrorPrint ( characters that printed to ConOut. If the length of the formatted ASCII
string is greater than PcdUefiLibMaxPrintBufferSize, then only the first
PcdUefiLibMaxPrintBufferSize characters are sent to ConOut.
+ If Format is NULL, then ASSERT().
+ If Format is not aligned on a 16-bit boundary, then ASSERT().
@param Format Null-terminated ASCII format string.
@param ... Variable argument list whose contents are accessed based
on the format string specified by Format.
- If Format is NULL, then ASSERT().
- If Format is not aligned on a 16-bit boundary, then ASSERT().
@return Number of ASCII characters printed to ConOut.
@@ -899,12 +924,12 @@ AsciiPrint ( characters that printed to StdErr. If the length of the formatted ASCII
string is greater than PcdUefiLibMaxPrintBufferSize, then only the first
PcdUefiLibMaxPrintBufferSize characters are sent to StdErr.
+ If Format is NULL, then ASSERT().
+ If Format is not aligned on a 16-bit boundary, then ASSERT().
@param Format Null-terminated ASCII format string.
@param ... Variable argument list whose contents are accessed based
on the format string specified by Format.
- If Format is NULL, then ASSERT().
- If Format is not aligned on a 16-bit boundary, then ASSERT().
@return Number of ASCII characters printed to ConErr.
@@ -1016,7 +1041,9 @@ AsciiPrintXY ( /**
Initializes a driver by installing the Driver Binding Protocol onto the driver's
- DriverBindingHandle. This is typically the same as the driver's ImageHandle, but
+ DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but
it can be different if the driver produces multiple DriverBinding Protocols.
If the Driver Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
@@ -1028,6 +1055,7 @@ AsciiPrintXY ( parameter is NULL, then a new handle is created.
@retval EFI_SUCCESS The protocol installation is completed successfully.
+ @retval EFI_OUT_OF_RESOURCES There was not enough system resources to install the protocol.
@retval Others Status from gBS->InstallMultipleProtocolInterfaces().
**/
@@ -1043,8 +1071,9 @@ EfiLibInstallDriverBinding ( /**
Initializes a driver by installing the Driver Binding Protocol together with the optional Component Name,
- Driver Configure and Driver Diagnostic Protocols onto the driver's DriverBindingHandle. This is
- typically the same as the driver's ImageHandle, but it can be different if the driver produces multiple
+ Driver Configure and Driver Diagnostic Protocols onto the driver's DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but it can be different if the driver produces multiple
DriverBinding Protocols.
If the Driver Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
@@ -1110,7 +1139,9 @@ EfiLibInstallDriverBindingComponentName2 ( /**
Intialize a driver by installing the Driver Binding Protocol together with the optional Component Name,
Component Name 2, Driver Configure, Driver Diagnostic and Driver Diagnostic 2 Protocols onto the driver's
- DriverBindingHandle. This is typically the same as the driver's ImageHandle, but it can be different if
+ DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but it can be different if
the driver produces multiple DriverBinding Protocols.
If the Drvier Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
@@ -1152,10 +1183,9 @@ EfiLibInstallAllDriverProtocols2 ( If Lang is NULL, then ASSERT.
- @param Lang Pointer of system language. Lang will always be filled with
- a valid RFC 3066 language string. If "PlatformLang" is not
- set in the system, the default language specifed by PcdUefiVariableDefaultPlatformLang
- is returned.
+ @param Lang Pointer of system language. Lang will always be filled with a valid RFC 3066
+ language string. If "PlatformLang" is not set in the system, the default
+ language specifed by PcdUefiVariableDefaultPlatformLang is returned.
@return EFI_SUCCESS If the EFI Variable with "PlatformLang" is set and return in Lang.
@return EFI_NOT_FOUND If the EFI Variable with "PlatformLang" is not set, but a valid default language is return in Lang.
diff --git a/MdePkg/Library/UefiLib/Console.c b/MdePkg/Library/UefiLib/Console.c index ef4419bbb7..110b19029f 100644 --- a/MdePkg/Library/UefiLib/Console.c +++ b/MdePkg/Library/UefiLib/Console.c @@ -244,6 +244,8 @@ GetGlyphWidth ( }
/**
+ Computes the display length of a Null-terminated Unicode String.
+
This function computes and returns the display length of
the Null-terminated Unicode string specified by String.
If String is NULL, then 0 is returned.
diff --git a/MdePkg/Library/UefiLib/UefiDriverModel.c b/MdePkg/Library/UefiLib/UefiDriverModel.c index d1bc7b68b6..2fe7a10796 100644 --- a/MdePkg/Library/UefiLib/UefiDriverModel.c +++ b/MdePkg/Library/UefiLib/UefiDriverModel.c @@ -17,19 +17,22 @@ #include "UefiLibInternal.h"
/**
- Intialize a driver by installing the Driver Binding Protocol onto the driver's
- DriverBindingHandle. This is typically the same as the driver's ImageHandle, but
+ Initializes a driver by installing the Driver Binding Protocol onto the driver's
+ DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but
it can be different if the driver produces multiple DriverBinding Protocols.
- If the Drvier Binding Protocol interface is NULL, then ASSERT ().
+ If the Driver Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
@param ImageHandle The image handle of the driver.
@param SystemTable The EFI System Table that was passed to the driver's entry point.
@param DriverBinding A Driver Binding Protocol instance that this driver is producing.
- @param DriverBindingHandle The handle that DriverBinding is to be installe onto. If this
+ @param DriverBindingHandle The handle that DriverBinding is to be installed onto. If this
parameter is NULL, then a new handle is created.
@retval EFI_SUCCESS The protocol installation is completed successfully.
+ @retval EFI_OUT_OF_RESOURCES There was not enough system resources to install the protocol.
@retval Others Status from gBS->InstallMultipleProtocolInterfaces().
**/
@@ -67,17 +70,18 @@ EfiLibInstallDriverBinding ( /**
- Intialize a driver by installing the Driver Binding Protocol together with the optional Component Name,
- Driver Configure and Driver Diagnostic Protocols onto the driver's DriverBindingHandle. This is
- typically the same as the driver's ImageHandle, but it can be different if the driver produces multiple
+ Initializes a driver by installing the Driver Binding Protocol together with the optional Component Name,
+ Driver Configure and Driver Diagnostic Protocols onto the driver's DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but it can be different if the driver produces multiple
DriverBinding Protocols.
- If the Drvier Binding Protocol interface is NULL, then ASSERT ().
+ If the Driver Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
@param ImageHandle The image handle of the driver.
@param SystemTable The EFI System Table that was passed to the driver's entry point.
@param DriverBinding A Driver Binding Protocol instance that this driver is producing.
- @param DriverBindingHandle The handle that DriverBinding is to be installe onto. If this
+ @param DriverBindingHandle The handle that DriverBinding is to be installed onto. If this
parameter is NULL, then a new handle is created.
@param ComponentName A Component Name Protocol instance that this driver is producing.
@param DriverConfiguration A Driver Configuration Protocol instance that this driver is producing.
@@ -279,7 +283,9 @@ EfiLibInstallDriverBindingComponentName2 ( /**
Intialize a driver by installing the Driver Binding Protocol together with the optional Component Name,
Component Name 2, Driver Configure, Driver Diagnostic and Driver Diagnostic 2 Protocols onto the driver's
- DriverBindingHandle. This is typically the same as the driver's ImageHandle, but it can be different if
+ DriverBindingHandle.
+
+ This is typically the same as the driver's ImageHandle, but it can be different if
the driver produces multiple DriverBinding Protocols.
If the Drvier Binding Protocol interface is NULL, then ASSERT ().
If the installation fails, then ASSERT ().
diff --git a/MdePkg/Library/UefiLib/UefiLib.c b/MdePkg/Library/UefiLib/UefiLib.c index 1e960174ab..53a46106e1 100644 --- a/MdePkg/Library/UefiLib/UefiLib.c +++ b/MdePkg/Library/UefiLib/UefiLib.c @@ -45,10 +45,13 @@ CompareIso639LanguageCode ( }
/**
- This function searches the list of configuration tables stored in the EFI System
- Table for a table with a GUID that matches TableGuid. If a match is found,
- then a pointer to the configuration table is returned in Table, and EFI_SUCCESS
- is returned. If a matching GUID is not found, then EFI_NOT_FOUND is returned.
+ Retrieves a pointer to the system configuration table from the EFI System Table
+ based on a specified GUID.
+
+ This function searches the list of configuration tables stored in the EFI System Table
+ for a table with a GUID that matches TableGuid. If a match is found, then a pointer to
+ the configuration table is returned in Table., and EFI_SUCCESS is returned. If a matching GUID
+ is not found, then EFI_NOT_FOUND is returned.
If TableGuid is NULL, then ASSERT().
If Table is NULL, then ASSERT().
@@ -85,16 +88,26 @@ EfiGetSystemConfigurationTable ( }
/**
- This function causes the notification function to be executed for every protocol
- of type ProtocolGuid instance that exists in the system when this function is
- invoked. In addition, every time a protocol of type ProtocolGuid instance is
- installed or reinstalled, the notification function is also executed.
+ Creates and returns a notification event and registers that event with all the protocol
+ instances specified by ProtocolGuid.
+
+ This function causes the notification function to be executed for every protocol of type
+ ProtocolGuid instance that exists in the system when this function is invoked.
+ In addition, every time a protocol of type ProtocolGuid instance is installed or reinstalled,
+ the notification function is also executed. This function returns the notification event
+ that was created.
+ If ProtocolGuid is NULL, then ASSERT().
+ If NotifyTpl is not a legal TPL value, then ASSERT().
+ If NotifyFunction is NULL, then ASSERT().
+ If Registration is NULL, then ASSERT().
@param ProtocolGuid Supplies GUID of the protocol upon whose installation the event is fired.
@param NotifyTpl Supplies the task priority level of the event notifications.
@param NotifyFunction Supplies the function to notify when the event is signaled.
@param NotifyContext The context parameter to pass to NotifyFunction.
@param Registration A pointer to a memory location to receive the registration value.
+ This value is passed to LocateHandle() to obtain new handles that
+ have been added that support the ProtocolGuid-specified protocol.
@return The notification event that was created.
@@ -112,6 +125,10 @@ EfiCreateProtocolNotifyEvent( EFI_STATUS Status;
EFI_EVENT Event;
+ ASSERT (ProtocolGuid != NULL);
+ ASSERT (NotifyFunction != NULL);
+ ASSERT (Registration != NULL);
+
//
// Create the event
//
@@ -147,9 +164,11 @@ EfiCreateProtocolNotifyEvent( }
/**
+ Creates a named event that can be signaled with EfiNamedEventSignal().
+
This function creates an event using NotifyTpl, NoifyFunction, and NotifyContext.
- This event is signaled with EfiNamedEventSignal(). This provide the ability for
- one or more listeners on the same event named by the GUID specified by Name.
+ This event is signaled with EfiNamedEventSignal(). This provides the ability for one or more
+ listeners on the same event named by the GUID specified by Name.
If Name is NULL, then ASSERT().
If NotifyTpl is not a legal TPL value, then ASSERT().
If NotifyFunction is NULL, then ASSERT().
@@ -157,7 +176,7 @@ EfiCreateProtocolNotifyEvent( @param Name Supplies GUID name of the event.
@param NotifyTpl Supplies the task priority level of the event notifications.
@param NotifyFunction Supplies the function to notify when the event is signaled.
- @param NotifyContext The context parameter to pass to NotifyFunction.
+ @param NotifyContext The context parameter to pass to NotifyFunction.
@param Registration A pointer to a memory location to receive the registration value.
@retval EFI_SUCCESS A named event was created.
@@ -219,8 +238,11 @@ EfiNamedEventListen ( }
/**
- This function signals the named event specified by Name. The named event must
- have been created with EfiNamedEventListen().
+ Signals a named event created with EfiNamedEventListen().
+
+ This function signals the named event specified by Name. The named event must have been
+ created with EfiNamedEventListen().
+ If Name is NULL, then ASSERT().
@param Name Supplies GUID name of the event.
@@ -237,6 +259,8 @@ EfiNamedEventSignal ( EFI_STATUS Status;
EFI_HANDLE Handle;
+ ASSERT(Name != NULL);
+
Handle = NULL;
Status = gBS->InstallProtocolInterface (
&Handle,
@@ -286,8 +310,10 @@ EfiGetCurrentTpl ( /**
- This function initializes a basic mutual exclusion lock to the released state
- and returns the lock. Each lock provides mutual exclusion access at its task
+ Initializes a basic mutual exclusion lock.
+
+ This function initializes a basic mutual exclusion lock to the released state
+ and returns the lock. Each lock provides mutual exclusion access at its task
priority level. Since there is no preemption or multiprocessor support in EFI,
acquiring the lock only consists of raising to the locks TPL.
If Lock is NULL, then ASSERT().
@@ -316,14 +342,16 @@ EfiInitializeLock ( }
/**
- This function raises the system's current task priority level to the task
- priority level of the mutual exclusion lock. Then, it places the lock in the
+ Acquires ownership of a lock.
+
+ This function raises the system's current task priority level to the task
+ priority level of the mutual exclusion lock. Then, it places the lock in the
acquired state.
If Lock is NULL, then ASSERT().
If Lock is not initialized, then ASSERT().
If Lock is already in the acquired state, then ASSERT().
- @param Lock The task lock with priority level.
+ @param Lock A pointer to the lock to acquire.
**/
VOID
@@ -340,9 +368,13 @@ EfiAcquireLock ( }
/**
- This function raises the system's current task priority level to the task
- priority level of the mutual exclusion lock. Then, it attempts to place the
+ Acquires ownership of a lock. If the lock is already owned , then an error is returned.
+
+ This function raises the system's current task priority level to the task
+ priority level of the mutual exclusion lock. Then, it attempts to place the
lock in the acquired state.
+ If Lock is NULL, then ASSERT().
+ If Lock is not initialized, then ASSERT().
@param Lock A pointer to the lock to acquire.
@@ -375,9 +407,14 @@ EfiAcquireLockOrFail ( }
/**
- This function transitions a mutual exclusion lock from the acquired state to
- the released state, and restores the system's task priority level to its
+ Releases ownership of a lock.
+
+ This function transitions a mutual exclusion lock from the acquired state to
+ the released state, and restores the system's task priority level to its
previous level.
+ If Lock is NULL, then ASSERT().
+ If Lock is not initialized, then ASSERT().
+ If Lock is already in the released state, then ASSERT().
@param Lock A pointer to the lock to release.
@@ -527,50 +564,32 @@ EfiTestChildHandle ( /**
This function looks up a Unicode string in UnicodeStringTable.
- If Language is a member of SupportedLanguages and a Unicode
- string is found in UnicodeStringTable that matches the
- language code specified by Language, then it is returned in
- UnicodeString.
-
- @param Language A pointer to the ISO 639-2
- language code for the Unicode
- string to look up and return.
-
- @param SupportedLanguages A pointer to the set of ISO
- 639-2language
- codes that the Unicode string
- table supports. Language must
- be a member of this set.
-
- @param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
- @param UnicodeString A pointer to the Unicode
- string from UnicodeStringTable
- that matches the language
- specified by Language.
- @retval EFI_SUCCESS The Unicode string that
- matches the language specified
- by Language was found in the
- table of Unicoide strings
- UnicodeStringTable, and it was
- returned in UnicodeString.
-
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
- @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
- @retval EFI_UNSUPPORTED UnicodeStringTable is NULL.
-
- @retval EFI_UNSUPPORTED The language specified by
- Language is not a member
- ofSupportedLanguages.
-
- @retval EFI_UNSUPPORTED The language specified by
- Language is not supported by
- UnicodeStringTable.
+ If Language is a member of SupportedLanguages and a Unicode string is found in
+ UnicodeStringTable that matches the language code specified by Language, then it
+ is returned in UnicodeString.
+
+ @param Language A pointer to the ISO 639-2 language code for the
+ Unicode string to look up and return.
+ @param SupportedLanguages A pointer to the set of ISO 639-2 language codes
+ that the Unicode string table supports. Language
+ must be a member of this set.
+ @param UnicodeStringTable A pointer to the table of Unicode strings.
+ @param UnicodeString A pointer to the Unicode string from UnicodeStringTable
+ that matches the language specified by Language.
+
+ @retval EFI_SUCCESS The Unicode string that matches the language
+ specified by Language was found
+ in the table of Unicoide strings UnicodeStringTable,
+ and it was returned in UnicodeString.
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
+ @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
+ @retval EFI_UNSUPPORTED UnicodeStringTable is NULL.
+ @retval EFI_UNSUPPORTED The language specified by Language is not a
+ member of SupportedLanguages.
+ @retval EFI_UNSUPPORTED The language specified by Language is not
+ supported by UnicodeStringTable.
**/
EFI_STATUS
@@ -640,28 +659,23 @@ LookupUnicodeString ( @param Language A pointer to the ISO 639-2 or
RFC 3066 language code for the
Unicode string to look up and
- return.
-
+ return.
@param SupportedLanguages A pointer to the set of ISO
639-2 or RFC 3066 language
codes that the Unicode string
table supports. Language must
- be a member of this set.
-
+ be a member of this set.
@param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
+ Unicode strings.
@param UnicodeString A pointer to the Unicode
string from UnicodeStringTable
that matches the language
specified by Language.
-
@param Iso639Language Specify the language code
format supported. If true,
then the format follow ISO
639-2. If false, then it
follows RFC3066.
-
@retval EFI_SUCCESS The Unicode string that
matches the language specified
by Language was found in the
@@ -669,18 +683,13 @@ LookupUnicodeString ( UnicodeStringTable, and it was
returned in UnicodeString.
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
-
- @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
+ @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
@retval EFI_UNSUPPORTED UnicodeStringTable is NULL.
-
@retval EFI_UNSUPPORTED The language specified by
Language is not a member
- ofSupportedLanguages.
-
+ ofSupportedLanguages.
@retval EFI_UNSUPPORTED The language specified by
Language is not supported by
UnicodeStringTable.
@@ -767,57 +776,36 @@ LookupUnicodeString2 ( /**
-
This function adds a Unicode string to UnicodeStringTable.
- If Language is a member of SupportedLanguages then
- UnicodeString is added to UnicodeStringTable. New buffers are
- allocated for both Language and UnicodeString. The contents
- of Language and UnicodeString are copied into these new
- buffers. These buffers are automatically freed when
+
+ If Language is a member of SupportedLanguages then UnicodeString is added to
+ UnicodeStringTable. New buffers are allocated for both Language and
+ UnicodeString. The contents of Language and UnicodeString are copied into
+ these new buffers. These buffers are automatically freed when
FreeUnicodeStringTable() is called.
- @param Language A pointer to the ISO 639-2
- language code for the Unicode
+ @param Language A pointer to the ISO 639-2 language code for the Unicode
string to add.
-
- @param SupportedLanguages A pointer to the set of ISO
- 639-2 language codes that the
- Unicode string table supports.
- Language must be a member of
- this set.
-
- @param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
- @param UnicodeString A pointer to the Unicode
- string to add.
-
- @retval EFI_SUCCESS The Unicode string that
- matches the language specified
- by Language was found in the
- table of Unicode strings
- UnicodeStringTable, and it was
+ @param SupportedLanguages A pointer to the set of ISO 639-2 language codes
+ that the Unicode string table supports.
+ Language must be a member of this set.
+ @param UnicodeStringTable A pointer to the table of Unicode strings.
+ @param UnicodeString A pointer to the Unicode string to add.
+
+ @retval EFI_SUCCESS The Unicode string that matches the language
+ specified by Language was found in the table of
+ Unicode strings UnicodeStringTable, and it was
returned in UnicodeString.
-
@retval EFI_INVALID_PARAMETER Language is NULL.
-
@retval EFI_INVALID_PARAMETER UnicodeString is NULL.
-
@retval EFI_INVALID_PARAMETER UnicodeString is an empty string.
-
@retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
- @retval EFI_ALREADY_STARTED A Unicode string with language
- Language is already present in
- UnicodeStringTable.
-
- @retval EFI_OUT_OF_RESOURCES There is not enough memory to
- add another Unicode string to
- UnicodeStringTable.
-
- @retval EFI_UNSUPPORTED The language specified by
- Language is not a member of
- SupportedLanguages.
+ @retval EFI_ALREADY_STARTED A Unicode string with language Language is
+ already present in UnicodeStringTable.
+ @retval EFI_OUT_OF_RESOURCES There is not enough memory to add another
+ Unicode string to UnicodeStringTable.
+ @retval EFI_UNSUPPORTED The language specified by Language is not a
+ member of SupportedLanguages.
**/
EFI_STATUS
@@ -956,8 +944,8 @@ AddUnicodeString ( /**
-
This function adds a Unicode string to UnicodeStringTable.
+
If Language is a member of SupportedLanguages then
UnicodeString is added to UnicodeStringTable. New buffers are
allocated for both Language and UnicodeString. The contents
@@ -967,26 +955,21 @@ AddUnicodeString ( @param Language A pointer to the ISO 639-2 or
RFC 3066 language code for the
- Unicode string to add.
-
+ Unicode string to add.
@param SupportedLanguages A pointer to the set of ISO
- 639-2 or RFC 3.66 language
+ 639-2 or RFC 3066 language
codes that the Unicode string
table supports. Language must
- be a member of this set.
-
+ be a member of this set.
@param UnicodeStringTable A pointer to the table of
- Unicode strings.
-
+ Unicode strings.
@param UnicodeString A pointer to the Unicode
- string to add.
-
+ string to add.
@param Iso639Language Specify the language code
format supported. If true,
then the format follow ISO
639-2. If false, then it
follows RFC3066.
-
@retval EFI_SUCCESS The Unicode string that
matches the language specified
by Language was found in the
@@ -994,22 +977,16 @@ AddUnicodeString ( UnicodeStringTable, and it was
returned in UnicodeString.
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
-
- @retval EFI_INVALID_PARAMETER UnicodeString is an empty string.
-
- @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
-
+ @retval EFI_INVALID_PARAMETER Language is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is NULL.
+ @retval EFI_INVALID_PARAMETER UnicodeString is an empty string.
+ @retval EFI_UNSUPPORTED SupportedLanguages is NULL.
@retval EFI_ALREADY_STARTED A Unicode string with language
Language is already present in
- UnicodeStringTable.
-
+ UnicodeStringTable.
@retval EFI_OUT_OF_RESOURCES There is not enough memory to
add another Unicode string to
- UnicodeStringTable.
-
+ UnicodeStringTable.
@retval EFI_UNSUPPORTED The language specified by
Language is not a member of
SupportedLanguages.
@@ -1175,6 +1152,7 @@ AddUnicodeString2 ( /**
This function frees the table of Unicode strings in UnicodeStringTable.
+
If UnicodeStringTable is NULL, then EFI_SUCCESS is returned.
Otherwise, each language code, and each Unicode string in the Unicode string
table are freed, and EFI_SUCCESS is returned.
@@ -1231,10 +1209,9 @@ FreeUnicodeStringTable ( If Lang is NULL, then ASSERT.
- @param Lang Pointer of system language. Lang will always be filled with
- a valid RFC 3066 language string. If "PlatformLang" is not
- set in the system, the default language specifed by PcdUefiVariableDefaultPlatformLang
- is returned.
+ @param Lang Pointer of system language. Lang will always be filled with a valid RFC 3066
+ language string. If "PlatformLang" is not set in the system, the default
+ language specifed by PcdUefiVariableDefaultPlatformLang is returned.
@return EFI_SUCCESS If the EFI Variable with "PlatformLang" is set and return in Lang.
@return EFI_NOT_FOUND If the EFI Variable with "PlatformLang" is not set, but a valid default language is return in Lang.
diff --git a/MdePkg/Library/UefiLib/UefiNotTiano.c b/MdePkg/Library/UefiLib/UefiNotTiano.c index b2e01997f8..e40cd0dce4 100644 --- a/MdePkg/Library/UefiLib/UefiNotTiano.c +++ b/MdePkg/Library/UefiLib/UefiNotTiano.c @@ -214,10 +214,12 @@ EfiCreateEventReadyToBootEx ( /**
- Signal a Ready to Boot Event.
-
- Create a Ready to Boot Event. Signal it and close it. This causes other
- events of the same event group to be signaled in other modules.
+ Create, Signal, and Close the Ready to Boot event using EfiSignalEventReadyToBoot().
+
+ This function abstracts the signaling of the Ready to Boot Event. The Framework moved
+ from a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from
+ how this event is created to prevent to code form having to change with the version of
+ the specification supported.
**/
VOID
@@ -237,10 +239,12 @@ EfiSignalEventReadyToBoot ( }
/**
- Signal a Legacy Boot Event.
+ Create, Signal, and Close the Ready to Boot event using EfiSignalEventLegacyBoot().
- Create a legacy Boot Event. Signal it and close it. This causes other
- events of the same event group to be signaled in other modules.
+ This function abstracts the signaling of the Legacy Boot Event. The Framework moved from
+ a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from how
+ this event is created to prevent to code form having to change with the version of the
+ specification supported.
**/
VOID
@@ -261,17 +265,18 @@ EfiSignalEventLegacyBoot ( /**
+ Check to see if the Firmware Volume (FV) Media Device Path is valid
+
The Framework FwVol Device Path changed to conform to the UEFI 2.0 specification.
This library function abstracts validating a device path node.
-
Check the MEDIA_FW_VOL_FILEPATH_DEVICE_PATH data structure to see if it's valid.
- If it is valid, then return the GUID file name from the device path node.
- Otherwise, return NULL. This device path changed in the DXE CIS version 0.92
- in a non back ward compatible way to not conflict with the UEFI 2.0 specification.
- This function abstracts the differences from the caller.
+ If it is valid, then return the GUID file name from the device path node. Otherwise,
+ return NULL. This device path changed in the DXE CIS version 0.92 in a non back ward
+ compatible way to not conflict with the UEFI 2.0 specification. This function abstracts
+ the differences from the caller.
If FvDevicePathNode is NULL, then ASSERT().
-
- @param FvFileDevicePathNode Pointer to FV device path to check.
+
+ @param FvDevicePathNode Pointer to FV device path to check.
@retval NULL FvDevicePathNode is not valid.
@retval Other FvDevicePathNode is valid and pointer to NameGuid was returned.
@@ -295,17 +300,18 @@ EfiGetNameGuidFromFwVolDevicePathNode ( /**
+ Initialize a Firmware Volume (FV) Media Device Path node.
+
The Framework FwVol Device Path changed to conform to the UEFI 2.0 specification.
- This library function abstracts initializing a device path node.
-
+ This library function abstracts initializing a device path node.
Initialize the MEDIA_FW_VOL_FILEPATH_DEVICE_PATH data structure. This device
path changed in the DXE CIS version 0.92 in a non back ward compatible way to
not conflict with the UEFI 2.0 specification. This function abstracts the
differences from the caller.
If FvDevicePathNode is NULL, then ASSERT().
If NameGuid is NULL, then ASSERT().
-
- @param FvFileDevicePathNode Pointer to a FV device path node to initialize
+
+ @param FvDevicePathNode Pointer to a FV device path node to initialize
@param NameGuid FV file name to use in FvDevicePathNode
**/
diff --git a/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c b/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c index 818cd66e4a..3205d57bc0 100644 --- a/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c +++ b/MdePkg/Library/UefiRuntimeLib/RuntimeLib.c @@ -152,9 +152,16 @@ RuntimeDriverLibDeconstruct ( }
/**
- Return TRUE if ExitBootServices () has been called.
+ This function allows the caller to determine if UEFI ExitBootServices() has been called.
+
+ This function returns TRUE after all the EVT_SIGNAL_EXIT_BOOT_SERVICES functions have
+ executed as a result of the OS calling ExitBootServices(). Prior to this time FALSE
+ is returned. This function is used by runtime code to decide it is legal to access
+ services that go away after ExitBootServices().
+
+ @retval TRUE The system has finished executing the EVT_SIGNAL_EXIT_BOOT_SERVICES event.
+ @retval FALSE The system has not finished executing the EVT_SIGNAL_EXIT_BOOT_SERVICES event.
- @retval TRUE If ExitBootServices () has been called
**/
BOOLEAN
EFIAPI
@@ -166,9 +173,16 @@ EfiAtRuntime ( }
/**
- Return TRUE if SetVirtualAddressMap () has been called.
+ This function allows the caller to determine if UEFI SetVirtualAddressMap() has been called.
+
+ This function returns TRUE after all the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE functions have
+ executed as a result of the OS calling SetVirtualAddressMap(). Prior to this time FALSE
+ is returned. This function is used by runtime code to decide it is legal to access services
+ that go away after SetVirtualAddressMap().
+
+ @retval TRUE The system has finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
+ @retval FALSE The system has not finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
- @retval TRUE If SetVirtualAddressMap () has been called
**/
BOOLEAN
EFIAPI
diff --git a/MdePkg/Library/UefiRuntimeLib/RuntimeService.c b/MdePkg/Library/UefiRuntimeLib/RuntimeService.c index f4076513f4..0ffbe102e5 100644 --- a/MdePkg/Library/UefiRuntimeLib/RuntimeService.c +++ b/MdePkg/Library/UefiRuntimeLib/RuntimeService.c @@ -24,10 +24,19 @@ Resets the entire platform.
@param ResetType The type of reset to perform.
- @param ResetStatus The status code for reset.
- @param DataSize The size in bytes of reset data.
- @param ResetData Pointer to data buffer that includes
- Null-Terminated Unicode string.
+ @param ResetStatus The status code for the reset. If the system reset is part of a
+ normal operation, the status code would be EFI_SUCCESS. If the system
+ reset is due to some type of failure the most appropriate EFI Status
+ code would be used.
+ @param DataSizeThe size, in bytes, of ResetData.
+ @param ResetData For a ResetType of EfiResetCold, EfiResetWarm, or EfiResetShutdown
+ the data buffer starts with a Null-terminated Unicode string, optionally
+ followed by additional binary data. The string is a description that the
+ caller may use to further indicate the reason for the system reset. ResetData
+ is only valid if ResetStatus is something other then EFI_SUCCESS. This
+ pointer must be a physical address. For a ResetType of EfiRestUpdate the
+ data buffer also starts with a Null-terminated string that is followed by
+ a physical VOID * to an EFI_CAPSULE_HEADER.
**/
VOID
@@ -44,15 +53,24 @@ EfiResetSystem ( /**
- Return current time and date information, and time-keeping
- capabilities of hardware platform.
+ This service is a wrapper for the UEFI Runtime Service GetTime().
+
+ The GetTime() function returns a time that was valid sometime during the call to the function.
+ While the returned EFI_TIME structure contains TimeZone and Daylight savings time information,
+ the actual clock does not maintain these values. The current time zone and daylight saving time
+ information returned by GetTime() are the values that were last set via SetTime().
+ The GetTime() function should take approximately the same amount of time to read the time each
+ time it is called. All reported device capabilities are to be rounded up.
+ During runtime, if a PC-AT CMOS device is present in the platform the caller must synchronize
+ access to the device before calling GetTime().
@param Time A pointer to storage to receive a snapshot of the current time.
@param Capabilities An optional pointer to a buffer to receive the real time clock device's
capabilities.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_INVALID_PARAMETER Time is NULL.
+ @retval EFI_DEVICE_ERROR The time could not be retrieved due to a hardware error.
**/
EFI_STATUS
@@ -67,12 +85,25 @@ EfiGetTime ( /**
- Set current time and date information.
-
- @param Time A pointer to cache of time setting.
-
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ This service is a wrapper for the UEFI Runtime Service SetTime().
+
+ The SetTime() function sets the real time clock device to the supplied time, and records the
+ current time zone and daylight savings time information. The SetTime() function is not allowed
+ to loop based on the current time. For example, if the device does not support a hardware reset
+ for the sub-resolution time, the code is not to implement the feature by waiting for the time to
+ wrap.
+ During runtime, if a PC-AT CMOS device is present in the platform the caller must synchronize
+ access to the device before calling SetTime().
+
+ @param Time A pointer to the current time. Type EFI_TIME is defined in the GetTime()
+ function description. Full error checking is performed on the different
+ fields of the EFI_TIME structure (refer to the EFI_TIME definition in the
+ GetTime() function description for full details), and EFI_INVALID_PARAMETER
+ is returned if any field is out of range.
+
+ @retval EFI_SUCCESS The operation completed successfully.
+ @retval EFI_INVALID_PARAMETER A time field is out of range.
+ @retval EFI_DEVICE_ERROR The time could not be set due to a hardware error.
**/
EFI_STATUS
@@ -86,14 +117,24 @@ EfiSetTime ( /**
- Return current wakeup alarm clock setting.
+ Returns the current wakeup alarm clock setting.
- @param Enabled Indicate if the alarm clock is enabled or disabled.
- @param Pending Indicate if the alarm signal is pending and requires acknowledgement.
- @param Time Current alarm clock setting.
+ The alarm clock time may be rounded from the set alarm clock time to be within the resolution
+ of the alarm clock device. The resolution of the alarm clock device is defined to be one second.
+ During runtime, if a PC-AT CMOS device is present in the platform the caller must synchronize
+ access to the device before calling GetWakeupTime().
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @param Enabled Indicates if the alarm is currently enabled or disabled.
+ @param Pending Indicates if the alarm signal is pending and requires acknowledgement.
+ @param Time The current alarm setting. Type EFI_TIME is defined in the GetTime()
+ function description.
+
+ @retval EFI_SUCCESS The alarm settings were returned.
+ @retval EFI_INVALID_PARAMETER Enabled is NULL.
+ @retval EFI_INVALID_PARAMETER Pending is NULL.
+ @retval EFI_INVALID_PARAMETER Time is NULL.
+ @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.
+ @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
@@ -110,13 +151,18 @@ EfiGetWakeupTime ( /**
- Set current wakeup alarm clock.
+ Sets the system wakeup alarm clock time.
- @param Enable Enable or disable current alarm clock..
- @param Time Point to alarm clock setting.
+ @param Enable Enable or disable the wakeup alarm.
+ @param Time If Enable is TRUE, the time to set the wakeup alarm for. Type EFI_TIME
+ is defined in the GetTime() function description. If Enable is FALSE,
+ then this parameter is optional, and may be NULL.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled.
+ If Enable is FALSE, then the wakeup alarm was disabled.
+ @retval EFI_INVALID_PARAMETER A time field is out of range.
+ @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.
+ @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.
**/
EFI_STATUS
@@ -142,9 +188,16 @@ EfiSetWakeupTime ( As output, point to the actual size of the returned Data-Buffer.
@param Data Point to return Data-Buffer.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
-
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND The variable was not found.
+ @retval EFI_BUFFER_TOO_SMALL The DataSize is too small for the result. DataSize has
+ been updated with the size needed to complete the request.
+ @retval EFI_INVALID_PARAMETER VariableName is NULL.
+ @retval EFI_INVALID_PARAMETER VendorGuid is NULL.
+ @retval EFI_INVALID_PARAMETER DataSize is NULL.
+ @retval EFI_INVALID_PARAMETER The DataSize is not too small and Data is NULL.
+ @retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.
+ @retval EFI_SECURITY_VIOLATION The variable could not be retrieved due to an authentication failure.
**/
EFI_STATUS
EFIAPI
@@ -173,8 +226,15 @@ EfiGetVariable ( GetNextVriableName().
As output, returns the VendorGuid of the current variable.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND The next variable was not found.
+ @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.
+ VariableNameSize has been updated with the size needed
+ to complete the request.
+ @retval EFI_INVALID_PARAMETER VariableNameSize is NULL.
+ @retval EFI_INVALID_PARAMETER VariableName is NULL.
+ @retval EFI_INVALID_PARAMETER VendorGuid is NULL.
+ @retval EFI_DEVICE_ERROR The variable name could not be retrieved due to a hardware error.
**/
EFI_STATUS
@@ -200,8 +260,19 @@ EfiGetNextVariableName ( @param DataSize The size in bytes of Data-Buffer.
@param Data Point to the content of the variable.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
+ defined by the Attributes.
+ @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the
+ DataSize exceeds the maximum allowed.
+ @retval EFI_INVALID_PARAMETER VariableName is an empty Unicode string.
+ @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.
+ @retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.
+ @retval EFI_WRITE_PROTECTED The variable in question is read-only.
+ @retval EFI_WRITE_PROTECTED The variable in question cannot be deleted.
+ @retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS
+ set but the AuthInfo does NOT pass the validation check carried
+ out by the firmware.
+ @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
**/
EFI_STATUS
@@ -223,8 +294,9 @@ EfiSetVariable ( @param HighCount Pointer to returned value.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS The next high monotonic count was returned.
+ @retval EFI_DEVICE_ERROR The device is not functioning properly.
+ @retval EFI_INVALID_PARAMETER HighCount is NULL.
**/
EFI_STATUS
@@ -238,15 +310,18 @@ EfiGetNextHighMonotonicCount ( /**
- Determines the new virtual address that is to be used on subsequent memory accesses.
+ This service converts a function pointer from physical to virtual addressing.
@param DebugDisposition Supplies type information for the pointer being converted.
@param Address The pointer to a pointer that is to be fixed to be the
value needed for the new virtual address mapping being
applied.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval EFI_SUCCESS The pointer pointed to by Address was modified.
+ @retval EFI_NOT_FOUND The pointer pointed to by Address was not found to be part of
+ the current memory map. This is normally fatal.
+ @retval EFI_INVALID_PARAMETER Address is NULL.
+ @retval EFI_INVALID_PARAMETER *Address is NULL and DebugDispositio
**/
EFI_STATUS
@@ -279,8 +354,7 @@ EfiConvertPointer ( value needed for the new virtual address mapping being
applied.
- @retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @return EFI_STATUS value from EfiConvertPointer().
**/
EFI_STATUS
@@ -295,13 +369,17 @@ EfiConvertFunctionPointer ( /**
- Conver the standard Lib double linked list to a virtual mapping.
+ Convert the standard Lib double linked list to a virtual mapping.
+
+ This service uses EfiConvertPointer() to walk a double linked list and convert all the link
+ pointers to their virtual mappings. This function is only guaranteed to work during the
+ EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event and calling it at other times has undefined results.
@param DebugDisposition Supplies type information for the pointer being converted.
@param ListHead Head of linked list to convert.
@retval EFI_SUCCESS Success to execute the function.
- @retval !EFI_SUCCESS Failed to execute the function.
+ @retval !EFI_SUCCESS Failed to e3xecute the function.
**/
EFI_STATUS
@@ -408,11 +486,13 @@ EfiSetVirtualAddressMap ( CapsuleHeaderArray. This parameter is only referenced if
the capsules are defined to persist across system reset.
- @retval EFI_SUCCESS Valid capsule was passed. I Valid capsule was passed. If
- CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the
- capsule has been successfully processed by the firmware.
- @retval EFI_INVALID_PARAMETER CapsuleSize is NULL or ResetTye is NULL.
+ @retval EFI_SUCCESS Valid capsule was passed. If CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set,
+ the capsule has been successfully processed by the firmware.
+ @retval EFI_INVALID_PARAMETER CapsuleSize or HeaderSize is NULL.
+ @retval EFI_INVALID_PARAMETER CapsuleCount is 0
@retval EFI_DEVICE_ERROR The capsule update was started, but failed due to a device error.
+ @retval EFI_UNSUPPORTED The capsule type is not supported on this platform.
+ @retval EFI_OUT_OF_RESOURCES There were insufficient resources to process the capsule.
**/
EFI_STATUS
@@ -481,6 +561,8 @@ EfiQueryCapsuleCapabilities ( /**
+ Returns information about the EFI variables.
+
The QueryVariableInfo() function allows a caller to obtain the information about the
maximum size of the storage space available for the EFI variables, the remaining size of the storage
space available for the EFI variables and the maximum size of each individual EFI variable,
|