1623ce4aad
Pre-allocate pool for runtime phase. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11087 6f19259b-4bc3-4df7-8a09-765794883524
272 lines
11 KiB
C
272 lines
11 KiB
C
/** @file
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The internal header file includes the common header files, defines
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internal structure and functions used by EmuVariable module.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _VARIABLE_H_
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#define _VARIABLE_H_
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#include <Uefi.h>
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#include <Protocol/VariableWrite.h>
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#include <Protocol/Variable.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiRuntimeLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/BaseLib.h>
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#include <Library/PcdLib.h>
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#include <Guid/VariableFormat.h>
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#include <Guid/GlobalVariable.h>
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#include <Guid/EventGroup.h>
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#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))
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///
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/// The size of a 3 character ISO639 language code.
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///
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#define ISO_639_2_ENTRY_SIZE 3
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typedef enum {
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Physical,
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Virtual
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} VARIABLE_POINTER_TYPE;
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typedef struct {
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VARIABLE_HEADER *CurrPtr;
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VARIABLE_HEADER *EndPtr;
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VARIABLE_HEADER *StartPtr;
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BOOLEAN Volatile;
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} VARIABLE_POINTER_TRACK;
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typedef struct {
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EFI_PHYSICAL_ADDRESS VolatileVariableBase;
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EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;
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EFI_LOCK VariableServicesLock;
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} VARIABLE_GLOBAL;
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typedef struct {
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VARIABLE_GLOBAL VariableGlobal[2];
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UINTN VolatileLastVariableOffset;
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UINTN NonVolatileLastVariableOffset;
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UINTN CommonVariableTotalSize;
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UINTN HwErrVariableTotalSize;
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CHAR8 *PlatformLangCodes;
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CHAR8 *LangCodes;
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CHAR8 *PlatformLang;
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CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];
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} ESAL_VARIABLE_GLOBAL;
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///
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/// Don't use module globals after the SetVirtualAddress map is signaled
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///
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extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;
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/**
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Initializes variable store area for non-volatile and volatile variable.
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This function allocates and initializes memory space for global context of ESAL
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variable service and variable store area for non-volatile and volatile variable.
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@param ImageHandle The Image handle of this driver.
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@param SystemTable The pointer of EFI_SYSTEM_TABLE.
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@retval EFI_SUCCESS Function successfully executed.
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@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
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**/
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EFI_STATUS
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EFIAPI
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VariableCommonInitialize (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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/**
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Entry point of EmuVariable service module.
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This function is the entry point of EmuVariable service module.
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It registers all interfaces of Variable Services, initializes
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variable store for non-volatile and volatile variables, and registers
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notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
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@param ImageHandle The Image handle of this driver.
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@param SystemTable The pointer of EFI_SYSTEM_TABLE.
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@retval EFI_SUCCESS Variable service successfully initialized.
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**/
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EFI_STATUS
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EFIAPI
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VariableServiceInitialize (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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/**
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Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
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This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
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It convers pointer to new virtual address.
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context.
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**/
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VOID
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EFIAPI
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VariableClassAddressChangeEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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/**
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This code finds variable in storage blocks (Volatile or Non-Volatile).
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@param VariableName A Null-terminated Unicode string that is the name of
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the vendor's variable.
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@param VendorGuid A unique identifier for the vendor.
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@param Attributes If not NULL, a pointer to the memory location to return the
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attributes bitmask for the variable.
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@param DataSize Size of Data found. If size is less than the
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data, this value contains the required size.
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@param Data On input, the size in bytes of the return Data buffer.
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On output, the size of data returned in Data.
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@param Global Pointer to VARIABLE_GLOBAL structure
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_NOT_FOUND The variable was not found.
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@retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has
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been updated with the size needed to complete the request.
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@retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.
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**/
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EFI_STATUS
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EFIAPI
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EmuGetVariable (
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IN CHAR16 *VariableName,
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IN EFI_GUID *VendorGuid,
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OUT UINT32 *Attributes OPTIONAL,
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IN OUT UINTN *DataSize,
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OUT VOID *Data,
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IN VARIABLE_GLOBAL *Global
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);
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/**
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This code finds the next available variable.
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@param VariableNameSize Size of the variable.
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@param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().
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On output, returns the Null-terminated Unicode string of the current variable.
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@param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().
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On output, returns the VendorGuid of the current variable.
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@param Global Pointer to VARIABLE_GLOBAL structure.
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@retval EFI_SUCCESS The function completed successfully.
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@retval EFI_NOT_FOUND The next variable was not found.
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@retval EFI_BUFFER_TOO_SMALL VariableNameSize is too small for the result.
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VariableNameSize has been updated with the size needed to complete the request.
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@retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.
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**/
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EFI_STATUS
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EFIAPI
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EmuGetNextVariableName (
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IN OUT UINTN *VariableNameSize,
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IN OUT CHAR16 *VariableName,
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IN OUT EFI_GUID *VendorGuid,
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IN VARIABLE_GLOBAL *Global
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);
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/**
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This code sets variable in storage blocks (Volatile or Non-Volatile).
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@param VariableName A Null-terminated Unicode string that is the name of the vendor's
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variable. Each VariableName is unique for each
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VendorGuid. VariableName must contain 1 or more
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Unicode characters. If VariableName is an empty Unicode
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string, then EFI_INVALID_PARAMETER is returned.
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@param VendorGuid A unique identifier for the vendor
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@param Attributes Attributes bitmask to set for the variable
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@param DataSize The size in bytes of the Data buffer. A size of zero causes the
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variable to be deleted.
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@param Data The contents for the variable
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@param Global Pointer to VARIABLE_GLOBAL structure
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@param VolatileOffset The offset of last volatile variable
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@param NonVolatileOffset The offset of last non-volatile variable
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@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
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defined by the Attributes.
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@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the
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DataSize exceeds the maximum allowed, or VariableName is an empty
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Unicode string, or VendorGuid is NULL.
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@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.
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@retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.
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@retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.
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@retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
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**/
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EFI_STATUS
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EFIAPI
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EmuSetVariable (
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IN CHAR16 *VariableName,
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IN EFI_GUID *VendorGuid,
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IN UINT32 Attributes,
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IN UINTN DataSize,
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IN VOID *Data,
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IN VARIABLE_GLOBAL *Global,
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IN UINTN *VolatileOffset,
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IN UINTN *NonVolatileOffset
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);
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/**
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This code returns information about the EFI variables.
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@param Attributes Attributes bitmask to specify the type of variables
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on which to return information.
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@param MaximumVariableStorageSize On output the maximum size of the storage space available for
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the EFI variables associated with the attributes specified.
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@param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI
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variables associated with the attributes specified.
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@param MaximumVariableSize Returns the maximum size of an individual EFI variable
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associated with the attributes specified.
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@param Global Pointer to VARIABLE_GLOBAL structure.
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@retval EFI_SUCCESS Valid answer returned.
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@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied
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@retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the
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MaximumVariableStorageSize, RemainingVariableStorageSize,
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MaximumVariableSize are undefined.
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**/
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EFI_STATUS
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EFIAPI
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EmuQueryVariableInfo (
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IN UINT32 Attributes,
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OUT UINT64 *MaximumVariableStorageSize,
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OUT UINT64 *RemainingVariableStorageSize,
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OUT UINT64 *MaximumVariableSize,
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IN VARIABLE_GLOBAL *Global
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);
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#endif
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