diff options
Diffstat (limited to 'MdePkg/Include/Protocol/Pcd.h')
| -rw-r--r-- | MdePkg/Include/Protocol/Pcd.h | 371 |
1 files changed, 184 insertions, 187 deletions
diff --git a/MdePkg/Include/Protocol/Pcd.h b/MdePkg/Include/Protocol/Pcd.h index e75b4e513bbc..e0eb679e745d 100644 --- a/MdePkg/Include/Protocol/Pcd.h +++ b/MdePkg/Include/Protocol/Pcd.h @@ -2,18 +2,15 @@ Native Platform Configuration Database (PCD) Protocol Different with the EFI_PCD_PROTOCOL defined in PI 1.2 specification, the native - PCD protocol provide interfaces for dynamic and dynamic-ex type PCD. + PCD protocol provide interfaces for dynamic and dynamic-ex type PCD. The interfaces in dynamic type PCD do not require the token space guid as parameter, but interfaces in dynamic-ex type PCD require token space guid as parameter. - -Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR> -This program and the accompanying materials are licensed and made available under -the terms and conditions of the BSD License that accompanies this distribution. -The full text of the license may be found at -http://opensource.org/licenses/bsd-license.php. - -THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, -WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + + @par Revision Reference: + This Protocol was introduced in PI Specification 1.2. **/ @@ -31,26 +28,26 @@ extern EFI_GUID gPcdProtocolGuid; /** Sets the SKU value for subsequent calls to set or get PCD token values. - SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values. + SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values. SetSku() is normally called only once by the system. - For each item (token), the database can hold a single value that applies to all SKUs, - or multiple values, where each value is associated with a specific SKU Id. Items with multiple, - SKU-specific values are called SKU enabled. - - The SKU Id of zero is reserved as a default. The valid SkuId range is 1 to 255. - For tokens that are not SKU enabled, the system ignores any set SKU Id and works with the - single value for that token. For SKU-enabled tokens, the system will use the SKU Id set by the - last call to SetSku(). If no SKU Id is set or the currently set SKU Id isn't valid for the specified token, - the system uses the default SKU Id. If the system attempts to use the default SKU Id and no value has been + For each item (token), the database can hold a single value that applies to all SKUs, + or multiple values, where each value is associated with a specific SKU Id. Items with multiple, + SKU-specific values are called SKU enabled. + + The SKU Id of zero is reserved as a default. The valid SkuId range is 1 to 255. + For tokens that are not SKU enabled, the system ignores any set SKU Id and works with the + single value for that token. For SKU-enabled tokens, the system will use the SKU Id set by the + last call to SetSku(). If no SKU Id is set or the currently set SKU Id isn't valid for the specified token, + the system uses the default SKU Id. If the system attempts to use the default SKU Id and no value has been set for that Id, the results are unpredictable. - @param[in] SkuId The SKU value that will be used when the PCD service will retrieve and + @param[in] SkuId The SKU value that will be used when the PCD service will retrieve and set values associated with a PCD token. **/ -typedef +typedef VOID (EFIAPI *PCD_PROTOCOL_SET_SKU)( IN UINTN SkuId @@ -61,13 +58,13 @@ VOID /** Retrieves an 8-bit value for a given PCD token. - Retrieves the current byte-sized value for a PCD token number. + Retrieves the current byte-sized value for a PCD token number. If the TokenNumber is invalid, the results are unpredictable. - - @param[in] TokenNumber The PCD token number. + + @param[in] TokenNumber The PCD token number. @return The UINT8 value. - + **/ typedef UINT8 @@ -80,13 +77,13 @@ UINT8 /** Retrieves a 16-bit value for a given PCD token. - Retrieves the current 16-bit value for a PCD token number. + Retrieves the current 16-bit value for a PCD token number. If the TokenNumber is invalid, the results are unpredictable. - - @param[in] TokenNumber The PCD token number. + + @param[in] TokenNumber The PCD token number. @return The UINT16 value. - + **/ typedef UINT16 @@ -99,13 +96,13 @@ UINT16 /** Retrieves a 32-bit value for a given PCD token. - Retrieves the current 32-bit value for a PCD token number. + Retrieves the current 32-bit value for a PCD token number. If the TokenNumber is invalid, the results are unpredictable. - - @param[in] TokenNumber The PCD token number. + + @param[in] TokenNumber The PCD token number. @return The UINT32 value. - + **/ typedef UINT32 @@ -118,13 +115,13 @@ UINT32 /** Retrieves a 64-bit value for a given PCD token. - Retrieves the current 64-bit value for a PCD token number. + Retrieves the current 64-bit value for a PCD token number. If the TokenNumber is invalid, the results are unpredictable. - - @param[in] TokenNumber The PCD token number. + + @param[in] TokenNumber The PCD token number. @return The UINT64 value. - + **/ typedef UINT64 @@ -137,15 +134,15 @@ UINT64 /** Retrieves a pointer to a value for a given PCD token. - Retrieves the current pointer to the buffer for a PCD token number. - Do not make any assumptions about the alignment of the pointer that - is returned by this function call. If the TokenNumber is invalid, + Retrieves the current pointer to the buffer for a PCD token number. + Do not make any assumptions about the alignment of the pointer that + is returned by this function call. If the TokenNumber is invalid, the results are unpredictable. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The pointer to the buffer to be retrived. - + **/ typedef VOID * @@ -158,15 +155,15 @@ VOID * /** Retrieves a Boolean value for a given PCD token. - Retrieves the current boolean value for a PCD token number. - Do not make any assumptions about the alignment of the pointer that - is returned by this function call. If the TokenNumber is invalid, + Retrieves the current boolean value for a PCD token number. + Do not make any assumptions about the alignment of the pointer that + is returned by this function call. If the TokenNumber is invalid, the results are unpredictable. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The Boolean value. - + **/ typedef BOOLEAN @@ -179,13 +176,13 @@ BOOLEAN /** Retrieves the size of the value for a given PCD token. - Retrieves the current size of a particular PCD token. + Retrieves the current size of a particular PCD token. If the TokenNumber is invalid, the results are unpredictable. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size of the value for the PCD token. - + **/ typedef UINTN @@ -198,16 +195,16 @@ UINTN /** Retrieves an 8-bit value for a given PCD token. - Retrieves the 8-bit value of a particular PCD token. + Retrieves the 8-bit value of a particular PCD token. If the TokenNumber is invalid or the token space - specified by Guid does not exist, the results are + specified by Guid does not exist, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size 8-bit value for the PCD token. - + **/ typedef UINT8 @@ -221,16 +218,16 @@ UINT8 /** Retrieves a 16-bit value for a given PCD token. - Retrieves the 16-bit value of a particular PCD token. + Retrieves the 16-bit value of a particular PCD token. If the TokenNumber is invalid or the token space - specified by Guid does not exist, the results are + specified by Guid does not exist, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size 16-bit value for the PCD token. - + **/ typedef UINT16 @@ -244,16 +241,16 @@ UINT16 /** Retrieves a 32-bit value for a given PCD token. - Retrieves the 32-bit value of a particular PCD token. + Retrieves the 32-bit value of a particular PCD token. If the TokenNumber is invalid or the token space - specified by Guid does not exist, the results are + specified by Guid does not exist, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size 32-bit value for the PCD token. - + **/ typedef UINT32 @@ -267,16 +264,16 @@ UINT32 /** Retrieves an 64-bit value for a given PCD token. - Retrieves the 64-bit value of a particular PCD token. + Retrieves the 64-bit value of a particular PCD token. If the TokenNumber is invalid or the token space - specified by Guid does not exist, the results are + specified by Guid does not exist, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size 64-bit value for the PCD token. - + **/ typedef UINT64 @@ -290,16 +287,16 @@ UINT64 /** Retrieves a pointer to a value for a given PCD token. - Retrieves the current pointer to the buffer for a PCD token number. - Do not make any assumptions about the alignment of the pointer that - is returned by this function call. If the TokenNumber is invalid, + Retrieves the current pointer to the buffer for a PCD token number. + Do not make any assumptions about the alignment of the pointer that + is returned by this function call. If the TokenNumber is invalid, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The pointer to the buffer to be retrieved. - + **/ typedef VOID * @@ -313,16 +310,16 @@ VOID * /** Retrieves a Boolean value for a given PCD token. - Retrieves the Boolean value of a particular PCD token. + Retrieves the Boolean value of a particular PCD token. If the TokenNumber is invalid or the token space - specified by Guid does not exist, the results are + specified by Guid does not exist, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size Boolean value for the PCD token. - + **/ typedef BOOLEAN @@ -336,14 +333,14 @@ BOOLEAN /** Retrieves the size of the value for a given PCD token. - Retrieves the current size of a particular PCD token. + Retrieves the current size of a particular PCD token. If the TokenNumber is invalid, the results are unpredictable. @param[in] Guid The token space for the token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @return The size of the value for the PCD token. - + **/ typedef UINTN @@ -357,19 +354,19 @@ UINTN /** Sets an 8-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -383,19 +380,19 @@ EFI_STATUS /** Sets a 16-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -409,19 +406,19 @@ EFI_STATUS /** Sets a 32-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -435,19 +432,19 @@ EFI_STATUS /** Sets a 64-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -461,23 +458,23 @@ EFI_STATUS /** Sets a value of a specified size for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. - @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. - On input, if the SizeOfValue is greater than the maximum size supported - for this TokenNumber then the output value of SizeOfValue will reflect + @param[in] TokenNumber The PCD token number. + @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. + On input, if the SizeOfValue is greater than the maximum size supported + for this TokenNumber then the output value of SizeOfValue will reflect the maximum size supported for this TokenNumber. @param[in] Buffer The buffer to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -492,19 +489,19 @@ EFI_STATUS /** Sets a Boolean value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -518,20 +515,20 @@ EFI_STATUS /** Sets an 8-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -546,20 +543,20 @@ EFI_STATUS /** Sets an 16-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -574,20 +571,20 @@ EFI_STATUS /** Sets a 32-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -602,20 +599,20 @@ EFI_STATUS /** Sets a 64-bit value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -630,24 +627,24 @@ EFI_STATUS /** Sets a value of a specified size for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. - @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. - On input, if the SizeOfValue is greater than the maximum size supported - for this TokenNumber then the output value of SizeOfValue will reflect + @param[in] TokenNumber The PCD token number. + @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. + On input, if the SizeOfValue is greater than the maximum size supported + for this TokenNumber then the output value of SizeOfValue will reflect the maximum size supported for this TokenNumber. @param[in] Buffer The buffer to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -663,20 +660,20 @@ EFI_STATUS /** Sets a Boolean value for a given PCD token. - When the PCD service sets a value, it will check to ensure that the - size of the value being set is compatible with the Token's existing definition. + When the PCD service sets a value, it will check to ensure that the + size of the value being set is compatible with the Token's existing definition. If it is not, an error will be returned. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Value The value to set for the PCD token. @retval EFI_SUCCESS The procedure returned successfully. - @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data - being set was incompatible with a call to this function. + @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data + being set was incompatible with a call to this function. Use GetSize() to retrieve the size of the target data. @retval EFI_NOT_FOUND The PCD service could not find the requested token number. - + **/ typedef EFI_STATUS @@ -685,18 +682,18 @@ EFI_STATUS IN UINTN TokenNumber, IN BOOLEAN Value ); - + /** Callback on SET function prototype definition. - This notification function serves two purposes. - Firstly, it notifies the module which did the registration that the value - of this PCD token has been set. Secondly, it provides a mechanism for the - module that did the registration to intercept the set operation and override - the value that has been set, if necessary. After the invocation of the callback function, - TokenData will be used by PCD service DXE driver to modify the internal data in + This notification function serves two purposes. + Firstly, it notifies the module which did the registration that the value + of this PCD token has been set. Secondly, it provides a mechanism for the + module that did the registration to intercept the set operation and override + the value that has been set, if necessary. After the invocation of the callback function, + TokenData will be used by PCD service DXE driver to modify the internal data in PCD database. @param[in] CallBackGuid The PCD token GUID being set. @@ -721,11 +718,11 @@ VOID /** Specifies a function to be called anytime the value of a designated token is changed. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. + @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. - @retval EFI_SUCCESS The PCD service has successfully established a call event + @retval EFI_SUCCESS The PCD service has successfully established a call event for the CallBackToken requested. @retval EFI_NOT_FOUND The PCD service could not find the referenced token number. @@ -743,11 +740,11 @@ EFI_STATUS /** Cancels a previously set callback function for a particular PCD token number. - @param[in] TokenNumber The PCD token number. + @param[in] TokenNumber The PCD token number. @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. - @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. + @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. - @retval EFI_SUCCESS The PCD service has successfully established a call event + @retval EFI_SUCCESS The PCD service has successfully established a call event for the CallBackToken requested. @retval EFI_NOT_FOUND The PCD service could not find the referenced token number. @@ -763,32 +760,32 @@ EFI_STATUS /** - Retrieves the next valid token number in a given namespace. - - This is useful since the PCD infrastructure contains a sparse list of token numbers, + Retrieves the next valid token number in a given namespace. + + This is useful since the PCD infrastructure contains a sparse list of token numbers, and one cannot a priori know what token numbers are valid in the database. - - If TokenNumber is 0 and Guid is not NULL, then the first token from the token space specified by Guid is returned. - If TokenNumber is not 0 and Guid is not NULL, then the next token in the token space specified by Guid is returned. - If TokenNumber is 0 and Guid is NULL, then the first token in the default token space is returned. - If TokenNumber is not 0 and Guid is NULL, then the next token in the default token space is returned. - The token numbers in the default token space may not be related to token numbers in token spaces that are named by Guid. - If the next token number can be retrieved, then it is returned in TokenNumber, and EFI_SUCCESS is returned. - If TokenNumber represents the last token number in the token space specified by Guid, then EFI_NOT_FOUND is returned. + + If TokenNumber is 0 and Guid is not NULL, then the first token from the token space specified by Guid is returned. + If TokenNumber is not 0 and Guid is not NULL, then the next token in the token space specified by Guid is returned. + If TokenNumber is 0 and Guid is NULL, then the first token in the default token space is returned. + If TokenNumber is not 0 and Guid is NULL, then the next token in the default token space is returned. + The token numbers in the default token space may not be related to token numbers in token spaces that are named by Guid. + If the next token number can be retrieved, then it is returned in TokenNumber, and EFI_SUCCESS is returned. + If TokenNumber represents the last token number in the token space specified by Guid, then EFI_NOT_FOUND is returned. If TokenNumber is not present in the token space specified by Guid, then EFI_NOT_FOUND is returned. - @param[in] Guid The 128-bit unique value that designates the namespace from which to retrieve the next token. - This is an optional parameter that may be NULL. If this parameter is NULL, then a request is + @param[in] Guid The 128-bit unique value that designates the namespace from which to retrieve the next token. + This is an optional parameter that may be NULL. If this parameter is NULL, then a request is being made to retrieve tokens from the default token space. - @param[in,out] TokenNumber - A pointer to the PCD token number to use to find the subsequent token number. + @param[in,out] TokenNumber + A pointer to the PCD token number to use to find the subsequent token number. @retval EFI_SUCCESS The PCD service has retrieved the next valid token number. @retval EFI_NOT_FOUND The PCD service could not find data from the requested token number. **/ -typedef +typedef EFI_STATUS (EFIAPI *PCD_PROTOCOL_GET_NEXT_TOKEN)( IN CONST EFI_GUID *Guid, OPTIONAL @@ -813,7 +810,7 @@ EFI_STATUS @retval EFI_NOT_FOUND The PCD service could not find the next valid token namespace. **/ -typedef +typedef EFI_STATUS (EFIAPI *PCD_PROTOCOL_GET_NEXT_TOKENSPACE)( IN OUT CONST EFI_GUID **Guid |