diff options
author | Guo Mang <mang.guo@intel.com> | 2016-12-22 15:57:14 +0800 |
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committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:14:41 +0800 |
commit | 1760cf81e4b1847c6823ea3514a78dd120e19b6e (patch) | |
tree | 64a874b14050fe24d3bbc1bc13cd293abf8ae018 /Core/MdePkg/Include/Protocol/PiPcd.h | |
parent | 7f05fa00f73038b425002566d3afe6c3ade2ccdb (diff) | |
download | edk2-platforms-1760cf81e4b1847c6823ea3514a78dd120e19b6e.tar.xz |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Include/Protocol/PiPcd.h')
-rw-r--r-- | Core/MdePkg/Include/Protocol/PiPcd.h | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/Core/MdePkg/Include/Protocol/PiPcd.h b/Core/MdePkg/Include/Protocol/PiPcd.h new file mode 100644 index 0000000000..33704a0ad8 --- /dev/null +++ b/Core/MdePkg/Include/Protocol/PiPcd.h @@ -0,0 +1,424 @@ +/** @file
+ Platform Configuration Database (PCD) Protocol defined in PI 1.2 Vol3
+
+ A platform database that contains a variety of current platform settings or
+ directives that can be accessed by a driver or application.
+ PI PCD protocol only provide the accessing interfaces for Dynamic-Ex type PCD.
+
+ Callers to this protocol must be at a TPL_APPLICATION task priority level.
+ This is the base PCD service API that provides an abstraction for accessing configuration content in
+ the platform. It a seamless mechanism for extracting information regardless of where the
+ information is stored (such as in Read-only data, or an EFI Variable).
+ This protocol allows access to data through size-granular APIs and provides a mechanism for a
+ firmware component to monitor specific settings and be alerted when a setting is changed.
+
+ Copyright (c) 2009 - 2010, 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
+ which 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.
+
+ @par Revision Reference:
+ PI Version 1.2 Vol 3.
+**/
+
+#ifndef __PI_PCD_H__
+#define __PI_PCD_H__
+
+extern EFI_GUID gEfiPcdProtocolGuid;
+
+#define EFI_PCD_PROTOCOL_GUID \
+ { 0x13a3f0f6, 0x264a, 0x3ef0, { 0xf2, 0xe0, 0xde, 0xc5, 0x12, 0x34, 0x2f, 0x34 } }
+
+#define EFI_PCD_INVALID_TOKEN_NUMBER ((UINTN) 0)
+
+/**
+ 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 set for that Id, the
+ results are unpredictable.
+
+ @param[in] SkuId The SKU value to set.
+**/
+typedef
+VOID
+(EFIAPI *EFI_PCD_PROTOCOL_SET_SKU)(
+ IN UINTN SkuId
+);
+
+/**
+ Retrieves an 8-bit value for a given PCD token.
+ If the TokenNumber is invalid, the results are unpredictable.
+
+ @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.
+
+ @return 8-bit value for a given PCD token.
+**/
+typedef
+UINT8
+(EFIAPI *EFI_PCD_PROTOCOL_GET_8)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the current word-sized value for a PCD token number.
+ If the TokenNumber is invalid, the results are unpredictable.
+
+ @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.
+
+ @return word-sized value for a given PCD token.
+**/
+typedef
+UINT16
+(EFIAPI *EFI_PCD_PROTOCOL_GET_16)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the current 32-bit sized value for a PCD token number.
+ If the TokenNumber is invalid, the results are unpredictable.
+
+ @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.
+
+ @return 32-bit value for a given PCD token.
+**/
+typedef
+UINT32
+(EFIAPI *EFI_PCD_PROTOCOL_GET_32)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the 64-bit sized value for a PCD token number.
+ If the TokenNumber is invalid, the results are unpredictable.
+
+ @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.
+
+ @return 64-bit value for a given PCD token.
+
+**/
+typedef
+UINT64
+(EFIAPI *EFI_PCD_PROTOCOL_GET_64)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the current pointer to the 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] Guid The 128-bit unique value that designates the namespace from which to extract the value.
+ @param[in] TokenNumber The PCD token number.
+
+ @return pointer to a value for a given PCD token.
+**/
+typedef
+VOID *
+(EFIAPI *EFI_PCD_PROTOCOL_GET_POINTER)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the current BOOLEAN-sized value for a PCD token number. If the TokenNumber is
+ invalid, the results are unpredictable.
+
+ @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.
+
+ @return Boolean value for a given PCD token.
+**/
+typedef
+BOOLEAN
+(EFIAPI *EFI_PCD_PROTOCOL_GET_BOOLEAN)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ Retrieves the current size of a particular PCD token. If the TokenNumber is invalid, the results are
+ unpredictable.
+
+ @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.
+
+ @return the size of the value for a given PCD token.
+**/
+typedef
+UINTN
+(EFIAPI *EFI_PCD_PROTOCOL_GET_SIZE)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber
+);
+
+/**
+ 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. 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] Value The value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_8)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT8 Value
+);
+
+/**
+ 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. 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] Value The value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_16)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT16 Value
+);
+
+/**
+ Sets an 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. 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] Value The value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_32)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT32 Value
+);
+
+/**
+ Sets an 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. 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] Value The value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_64)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT64 Value
+);
+
+/**
+ 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. 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] SizeOfValue The length of the value being set for the PCD token. If too large of a length is
+ specified, upon return from this function the value of SizeOfValue will
+ reflect the maximum size for the PCD token.
+ @param[in] Buffer A pointer to the buffer containing the value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_POINTER)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN OUT UINTN *SizeOfValue,
+ IN VOID *Buffer
+);
+
+/**
+ 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. 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] Value The value to set for the PCD token.
+
+ @retval EFI_SUCCESS The PCD service has set the value requested
+ @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 GetSizeEx() 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
+(EFIAPI *EFI_PCD_PROTOCOL_SET_BOOLEAN)(
+ IN CONST EFI_GUID *Guid,
+ IN UINTN TokenNumber,
+ IN BOOLEAN Value
+);
+
+typedef
+VOID
+(EFIAPI *EFI_PCD_PROTOCOL_CALLBACK)(
+ IN EFI_GUID *Guid OPTIONAL,
+ IN UINTN CallBackToken,
+ IN OUT VOID *TokenData,
+ IN UINTN TokenDataSize
+);
+
+/**
+ Specifies a function to be called anytime the value of a designated token is changed.
+
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.
+ @param[in] CallBackToken The PCD token number to monitor.
+ @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 for the CallBackToken requested.
+ @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCD_PROTOCOL_CALLBACK_ON_SET)(
+ IN CONST EFI_GUID *Guid OPTIONAL,
+ IN UINTN CallBackToken,
+ IN EFI_PCD_PROTOCOL_CALLBACK CallBackFunction
+);
+
+/**
+ Cancels a callback function that was set through a previous call to the CallBackOnSet function.
+
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.
+ @param[in] CallBackToken The PCD token number to monitor.
+ @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 for the CallBackToken requested.
+ @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCD_PROTOCOL_CANCEL_CALLBACK)(
+ IN CONST EFI_GUID *Guid OPTIONAL,
+ IN UINTN CallBackToken,
+ IN EFI_PCD_PROTOCOL_CALLBACK CallBackFunction
+);
+
+/**
+ Gets 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.
+
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to retrieve the next token.
+ @param[in] TokenNumber A pointer to the PCD token number to use to find the subsequent token number. To
+ retrieve the "first" token, have the pointer reference a TokenNumber value of 0.
+ @retval EFI_SUCCESS The PCD service has retrieved the value requested
+ @retval EFI_NOT_FOUND The PCD service could not find data from the requested token number.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCD_PROTOCOL_GET_NEXT_TOKEN)(
+ IN CONST EFI_GUID *Guid, OPTIONAL
+ IN UINTN *TokenNumber
+);
+
+/**
+ Gets the next valid token namespace for a given namespace. This is useful to traverse the valid
+ token namespaces on a platform.
+
+ @param[in, out] Guid An indirect pointer to EFI_GUID. On input it designates a known token namespace
+ from which the search will start. On output, it designates the next valid token
+ namespace on the platform. If *Guid is NULL, then the GUID of the first token
+ space of the current platform is returned. If the search cannot locate the next valid
+ token namespace, an error is returned and the value of *Guid is undefined.
+
+ @retval EFI_SUCCESS The PCD service retrieved the value requested.
+ @retval EFI_NOT_FOUND The PCD service could not find the next valid token namespace.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PCD_PROTOCOL_GET_NEXT_TOKEN_SPACE)(
+ IN OUT CONST EFI_GUID **Guid
+);
+
+typedef struct _EFI_PCD_PROTOCOL {
+ EFI_PCD_PROTOCOL_SET_SKU SetSku;
+ EFI_PCD_PROTOCOL_GET_8 Get8;
+ EFI_PCD_PROTOCOL_GET_16 Get16;
+ EFI_PCD_PROTOCOL_GET_32 Get32;
+ EFI_PCD_PROTOCOL_GET_64 Get64;
+ EFI_PCD_PROTOCOL_GET_POINTER GetPtr;
+ EFI_PCD_PROTOCOL_GET_BOOLEAN GetBool;
+ EFI_PCD_PROTOCOL_GET_SIZE GetSize;
+ EFI_PCD_PROTOCOL_SET_8 Set8;
+ EFI_PCD_PROTOCOL_SET_16 Set16;
+ EFI_PCD_PROTOCOL_SET_32 Set32;
+ EFI_PCD_PROTOCOL_SET_64 Set64;
+ EFI_PCD_PROTOCOL_SET_POINTER SetPtr;
+ EFI_PCD_PROTOCOL_SET_BOOLEAN SetBool;
+ EFI_PCD_PROTOCOL_CALLBACK_ON_SET CallbackOnSet;
+ EFI_PCD_PROTOCOL_CANCEL_CALLBACK CancelCallback;
+ EFI_PCD_PROTOCOL_GET_NEXT_TOKEN GetNextToken;
+ EFI_PCD_PROTOCOL_GET_NEXT_TOKEN_SPACE GetNextTokenSpace;
+} EFI_PCD_PROTOCOL;
+
+#endif
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