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Code and comments have been checked with spec.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6650 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jji4
2008-11-20 08:55:42 +00:00
parent 404c79588e
commit 1d37ab9fb9
7 changed files with 429 additions and 312 deletions
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206
MdePkg/Include/Library/UefiLib.h
View File

@@ -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.