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audk/EdkModulePkg/Library/EdkDxeRuntimeDriverLib/Common/RuntimeService.c

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Initial import. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
2006-04-22 00:54:32 +02:00
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. 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.
Module Name:
RuntimeService.c
Abstract:
Light weight lib to support Tiano drivers.
--*/
#include <RuntimeLibInternal.h>
VOID
EfiResetSystem (
IN EFI_RESET_TYPE ResetType,
IN EFI_STATUS ResetStatus,
IN UINTN DataSize,
IN CHAR16 *ResetData
)
/*++
Routine Description:
Resets the entire platform.
Arguments:
ResetType - The type of reset to perform.
ResetStatus - The status code for the reset.
DataSize - The size, in bytes, of ResetData.
ResetData - A data buffer that includes a Null-terminated Unicode string, optionally
followed by additional binary data.
Returns:
None
--*/
{
mRT->ResetSystem (ResetType, ResetStatus, DataSize, ResetData);
}
//
// The following functions hide the mRT local global from the call to
// runtime service in the EFI system table.
//
EFI_STATUS
EfiGetTime (
OUT EFI_TIME *Time,
OUT EFI_TIME_CAPABILITIES *Capabilities
)
/*++
Routine Description:
Returns the current time and date information, and the time-keeping
capabilities of the hardware platform.
Arguments:
Time - A pointer to storage to receive a snapshot of the current time.
Capabilities - An optional pointer to a buffer to receive the real time clock device<EFBFBD><EFBFBD>s
capabilities.
Returns:
Status code
--*/
{
return mRT->GetTime (Time, Capabilities);
}
EFI_STATUS
EfiSetTime (
IN EFI_TIME *Time
)
/*++
Routine Description:
Sets the current local time and date information.
Arguments:
Time - A pointer to the current time.
Returns:
Status code
--*/
{
return mRT->SetTime (Time);
}
EFI_STATUS
EfiGetWakeupTime (
OUT BOOLEAN *Enabled,
OUT BOOLEAN *Pending,
OUT EFI_TIME *Time
)
/*++
Routine Description:
Returns the current wakeup alarm clock setting.
Arguments:
Enabled - Indicates if the alarm is currently enabled or disabled.
Pending - Indicates if the alarm signal is pending and requires acknowledgement.
Time - The current alarm setting.
Returns:
Status code
--*/
{
return mRT->GetWakeupTime (Enabled, Pending, Time);
}
EFI_STATUS
EfiSetWakeupTime (
IN BOOLEAN Enable,
IN EFI_TIME *Time
)
/*++
Routine Description:
Sets the system wakeup alarm clock time.
Arguments:
Enable - Enable or disable the wakeup alarm.
Time - If Enable is TRUE, the time to set the wakeup alarm for.
If Enable is FALSE, then this parameter is optional, and may be NULL.
Returns:
Status code
--*/
{
return mRT->SetWakeupTime (Enable, Time);
}
EFI_STATUS
EfiGetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID * VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data
)
/*++
Routine Description:
Returns the value of a variable.
Arguments:
VariableName - A Null-terminated Unicode string that is the name of the
vendor<EFBFBD><EFBFBD>s variable.
VendorGuid - A unique identifier for the vendor.
Attributes - If not NULL, a pointer to the memory location to return the
attributes bitmask for the variable.
DataSize - On input, the size in bytes of the return Data buffer.
On output the size of data returned in Data.
Data - The buffer to return the contents of the variable.
Returns:
Status code
--*/
{
return mRT->GetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);
}
EFI_STATUS
EfiGetNextVariableName (
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VendorGuid
)
/*++
Routine Description:
Enumerates the current variable names.
Arguments:
VariableNameSize - The size of the VariableName buffer.
VariableName - On input, supplies the last VariableName that was returned
by GetNextVariableName().
On output, returns the Nullterminated Unicode string of the
current variable.
VendorGuid - On input, supplies the last VendorGuid that was returned by
GetNextVariableName().
On output, returns the VendorGuid of the current variable.
Returns:
Status code
--*/
{
return mRT->GetNextVariableName (VariableNameSize, VariableName, VendorGuid);
}
EFI_STATUS
EfiSetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data
)
/*++
Routine Description:
Sets the value of a variable.
Arguments:
VariableName - A Null-terminated Unicode string that is the name of the
vendor<EFBFBD><EFBFBD>s variable.
VendorGuid - A unique identifier for the vendor.
Attributes - Attributes bitmask to set for the variable.
DataSize - The size in bytes of the Data buffer.
Data - The contents for the variable.
Returns:
Status code
--*/
{
return mRT->SetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);
}
EFI_STATUS
EfiGetNextHighMonotonicCount (
OUT UINT32 *HighCount
)
/*++
Routine Description:
Returns the next high 32 bits of the platform<EFBFBD><EFBFBD>s monotonic counter.
Arguments:
HighCount - Pointer to returned value.
Returns:
Status code
--*/
{
return mRT->GetNextHighMonotonicCount (HighCount);
}
EFI_STATUS
EfiConvertPointer (
IN UINTN DebugDisposition,
IN OUT VOID *Address
)
/*++
Routine Description:
Determines the new virtual address that is to be used on subsequent memory accesses.
Arguments:
DebugDisposition - Supplies type information for the pointer being converted.
Address - A pointer to a pointer that is to be fixed to be the value needed
for the new virtual address mappings being applied.
Returns:
Status code
--*/
{
return mRT->ConvertPointer (DebugDisposition, Address);
}
EFI_STATUS
EfiConvertInternalPointer (
IN OUT VOID *Address
)
/*++
Routine Description:
Call EfiConvertPointer() to convert internal pointer.
Arguments:
Address - A pointer to a pointer that is to be fixed to be the value needed
for the new virtual address mappings being applied.
Returns:
Status code
--*/
{
return EfiConvertPointer (0x0, Address);
}
EFI_STATUS
EfiConvertList (
IN UINTN DebugDisposition,
IN OUT LIST_ENTRY *ListHead
)
/*++
Routine Description:
Conver the standard Lib double linked list to a virtual mapping.
Arguments:
DebugDisposition - Argument to EfiConvertPointer (EFI 1.0 API)
ListHead - Head of linked list to convert
Returns:
EFI_SUCCESS
--*/
{
LIST_ENTRY *Link;
LIST_ENTRY *NextLink;
//
// Convert all the ForwardLink & BackLink pointers in the list
//
Link = ListHead;
do {
NextLink = Link->ForwardLink;
EfiConvertPointer (
Link->ForwardLink == ListHead ? DebugDisposition : 0,
(VOID **) &Link->ForwardLink
);
EfiConvertPointer (
Link->BackLink == ListHead ? DebugDisposition : 0,
(VOID **) &Link->BackLink
);
Link = NextLink;
} while (Link != ListHead);
return EFI_SUCCESS;
}
/**
Change the runtime addressing mode of EFI firmware from physical to virtual.
@param MemoryMapSize The size in bytes of VirtualMap.
@param DescriptorSize The size in bytes of an entry in the VirtualMap.
@param DescriptorVersion The version of the structure entries in VirtualMap.
@param VirtualMap An array of memory descriptors which contain new virtual
address mapping information for all runtime ranges. Type
EFI_MEMORY_DESCRIPTOR is defined in the
GetMemoryMap() function description.
@retval EFI_SUCCESS The virtual address map has been applied.
@retval EFI_UNSUPPORTED EFI firmware is not at runtime, or the EFI firmware is already in
virtual address mapped mode.
@retval EFI_INVALID_PARAMETER DescriptorSize or DescriptorVersion is
invalid.
@retval EFI_NO_MAPPING A virtual address was not supplied for a range in the memory
map that requires a mapping.
@retval EFI_NOT_FOUND A virtual address was supplied for an address that is not found
in the memory map.
**/
EFI_STATUS
EFIAPI
EfiSetVirtualAddressMap (
IN UINTN MemoryMapSize,
IN UINTN DescriptorSize,
IN UINT32 DescriptorVersion,
IN CONST EFI_MEMORY_DESCRIPTOR *VirtualMap
)
{
return mRT->SetVirtualAddressMap (
MemoryMapSize,
DescriptorSize,
DescriptorVersion,
(EFI_MEMORY_DESCRIPTOR *) VirtualMap
);
}
EFI_STATUS
EfiUpdateCapsule (
IN UEFI_CAPSULE_HEADER **CapsuleHeaderArray,
IN UINTN CapsuleCount,
IN EFI_PHYSICAL_ADDRESS ScatterGatherList OPTIONAL
)
{
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
return mRT->UpdateCapsule (
CapsuleHeaderArray,
CapsuleCount,
ScatterGatherList
);
#else
return EFI_UNSUPPORTED;
#endif
}
EFI_STATUS
EfiQueryCapsuleCapabilities (
IN UEFI_CAPSULE_HEADER **CapsuleHeaderArray,
IN UINTN CapsuleCount,
OUT UINT64 *MaximumCapsuleSize,
OUT EFI_RESET_TYPE *ResetType
)
{
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
return mRT->QueryCapsuleCapabilities (
CapsuleHeaderArray,
CapsuleCount,
MaximumCapsuleSize,
ResetType
);
#else
return EFI_UNSUPPORTED;
#endif
}
EFI_STATUS
EfiQueryVariableInfo (
IN UINT32 Attributes,
OUT UINT64 *MaximumVariableStorageSize,
OUT UINT64 *RemainingVariableStorageSize,
OUT UINT64 *MaximumVariableSize
)
{
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
return mRT->QueryVariableInfo (
Attributes,
MaximumVariableStorageSize,
RemainingVariableStorageSize,
MaximumVariableSize
);
#else
return EFI_UNSUPPORTED;
#endif
}