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audk/DynamicTablesPkg/Library/Acpi/Arm/AcpiGtdtLibArm/GtdtGenerator.c

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/** @file
GTDT Table Generator
Copyright (c) 2017 - 2019, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- ACPI 6.3 Specification - January 2019
**/
#include <Library/AcpiLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Protocol/AcpiTable.h>
// Module specific include files.
#include <AcpiTableGenerator.h>
#include <ConfigurationManagerObject.h>
#include <ConfigurationManagerHelper.h>
#include <Library/TableHelperLib.h>
#include <Protocol/ConfigurationManagerProtocol.h>
/** ARM standard GTDT Generator
Requirements:
The following Configuration Manager Object(s) are required by
this Generator:
- EArmObjGenericTimerInfo
- EArmObjPlatformGenericWatchdogInfo (OPTIONAL)
- EArmObjPlatformGTBlockInfo (OPTIONAL)
- EArmObjGTBlockTimerFrameInfo (OPTIONAL)
*/
/** This macro expands to a function that retrieves the Generic
Timer Information from the Configuration Manager.
*/
GET_OBJECT_LIST (
EObjNameSpaceArm,
EArmObjGenericTimerInfo,
CM_ARM_GENERIC_TIMER_INFO
);
/** This macro expands to a function that retrieves the SBSA Generic
Watchdog Timer Information from the Configuration Manager.
*/
GET_OBJECT_LIST (
EObjNameSpaceArm,
EArmObjPlatformGenericWatchdogInfo,
CM_ARM_GENERIC_WATCHDOG_INFO
);
/** This macro expands to a function that retrieves the Platform Generic
Timer Block Information from the Configuration Manager.
*/
GET_OBJECT_LIST (
EObjNameSpaceArm,
EArmObjPlatformGTBlockInfo,
CM_ARM_GTBLOCK_INFO
);
/** This macro expands to a function that retrieves the Generic
Timer Block Timer Frame Information from the Configuration Manager.
*/
GET_OBJECT_LIST (
EObjNameSpaceArm,
EArmObjGTBlockTimerFrameInfo,
CM_ARM_GTBLOCK_TIMER_FRAME_INFO
);
/** Add the Generic Timer Information to the GTDT table.
Also update the Platform Timer offset information if the platform
implements platform timers.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol Interface.
@param [in] Gtdt Pointer to the GTDT Table.
@param [in] PlatformTimerCount Platform timer count.
@param [in] AcpiTableRevision Acpi Revision targeted by the platform.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
@retval EFI_NOT_FOUND The required object was not found.
@retval EFI_BAD_BUFFER_SIZE The size returned by the Configuration
Manager is less than the Object size for the
requested object.
**/
STATIC
EFI_STATUS
EFIAPI
AddGenericTimerInfo (
IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST CfgMgrProtocol,
IN EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE * CONST Gtdt,
IN CONST UINT32 PlatformTimerCount,
IN CONST UINT32 AcpiTableRevision
)
{
EFI_STATUS Status;
CM_ARM_GENERIC_TIMER_INFO * GenericTimerInfo;
ASSERT (CfgMgrProtocol != NULL);
ASSERT (Gtdt != NULL);
Status = GetEArmObjGenericTimerInfo (
CfgMgrProtocol,
CM_NULL_TOKEN,
&GenericTimerInfo,
NULL
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to get GenericTimerInfo. Status = %r\n",
Status
));
return Status;
}
Gtdt->CntControlBasePhysicalAddress =
GenericTimerInfo->CounterControlBaseAddress;
Gtdt->Reserved = EFI_ACPI_RESERVED_DWORD;
Gtdt->SecurePL1TimerGSIV = GenericTimerInfo->SecurePL1TimerGSIV;
Gtdt->SecurePL1TimerFlags = GenericTimerInfo->SecurePL1TimerFlags;
Gtdt->NonSecurePL1TimerGSIV = GenericTimerInfo->NonSecurePL1TimerGSIV;
Gtdt->NonSecurePL1TimerFlags = GenericTimerInfo->NonSecurePL1TimerFlags;
Gtdt->VirtualTimerGSIV = GenericTimerInfo->VirtualTimerGSIV;
Gtdt->VirtualTimerFlags = GenericTimerInfo->VirtualTimerFlags;
Gtdt->NonSecurePL2TimerGSIV = GenericTimerInfo->NonSecurePL2TimerGSIV;
Gtdt->NonSecurePL2TimerFlags = GenericTimerInfo->NonSecurePL2TimerFlags;
Gtdt->CntReadBasePhysicalAddress =
GenericTimerInfo->CounterReadBaseAddress;
Gtdt->PlatformTimerCount = PlatformTimerCount;
Gtdt->PlatformTimerOffset = (PlatformTimerCount == 0) ? 0 :
sizeof (EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE);
if (AcpiTableRevision > EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION) {
Gtdt->VirtualPL2TimerGSIV = GenericTimerInfo->VirtualPL2TimerGSIV;
Gtdt->VirtualPL2TimerFlags = GenericTimerInfo->VirtualPL2TimerFlags;
}
return Status;
}
/** Add the SBSA Generic Watchdog Timers to the GTDT table.
@param [in] Gtdt Pointer to the GTDT Table.
@param [in] WatchdogOffset Offset to the watchdog information in the
GTDT Table.
@param [in] WatchdogInfoList Pointer to the watchdog information list.
@param [in] WatchdogCount Platform timer count.
**/
STATIC
VOID
AddGenericWatchdogList (
IN EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE * CONST Gtdt,
IN CONST UINT32 WatchdogOffset,
IN CONST CM_ARM_GENERIC_WATCHDOG_INFO * WatchdogInfoList,
IN UINT32 WatchdogCount
)
{
EFI_ACPI_6_3_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE * Watchdog;
ASSERT (Gtdt != NULL);
ASSERT (WatchdogInfoList != NULL);
Watchdog = (EFI_ACPI_6_3_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE *)
((UINT8*)Gtdt + WatchdogOffset);
while (WatchdogCount-- != 0) {
// Add watchdog entry
DEBUG ((DEBUG_INFO, "GTDT: Watchdog = 0x%p\n", Watchdog));
Watchdog->Type = EFI_ACPI_6_3_GTDT_SBSA_GENERIC_WATCHDOG;
Watchdog->Length =
sizeof (EFI_ACPI_6_3_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE);
Watchdog->Reserved = EFI_ACPI_RESERVED_BYTE;
Watchdog->RefreshFramePhysicalAddress =
WatchdogInfoList->RefreshFrameAddress;
Watchdog->WatchdogControlFramePhysicalAddress =
WatchdogInfoList->ControlFrameAddress;
Watchdog->WatchdogTimerGSIV = WatchdogInfoList->TimerGSIV;
Watchdog->WatchdogTimerFlags = WatchdogInfoList->Flags;
Watchdog++;
WatchdogInfoList++;
} // for
}
/**
Function to test if two Generic Timer Block Frame Info structures have the
same frame number.
@param [in] Frame1 Pointer to the first GT Block Frame Info
structure.
@param [in] Frame2 Pointer to the second GT Block Frame Info
structure.
@param [in] Index1 Index of Frame1 in the shared GT Block Frame
Information List.
@param [in] Index2 Index of Frame2 in the shared GT Block Frame
Information List.
@retval TRUE Frame1 and Frame2 have the same frame number.
@return FALSE Frame1 and Frame2 have different frame numbers.
**/
BOOLEAN
EFIAPI
IsGtFrameNumberEqual (
IN CONST VOID * Frame1,
IN CONST VOID * Frame2,
IN UINTN Index1,
IN UINTN Index2
)
{
UINT8 FrameNumber1;
UINT8 FrameNumber2;
ASSERT ((Frame1 != NULL) && (Frame2 != NULL));
FrameNumber1 = ((CM_ARM_GTBLOCK_TIMER_FRAME_INFO*)Frame1)->FrameNumber;
FrameNumber2 = ((CM_ARM_GTBLOCK_TIMER_FRAME_INFO*)Frame2)->FrameNumber;
if (FrameNumber1 == FrameNumber2) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: GT Block Frame Info Structures %d and %d have the same " \
"frame number: 0x%x.\n",
Index1,
Index2,
FrameNumber1
));
return TRUE;
}
return FALSE;
}
/** Update the GT Block Timer Frame lists in the GTDT Table.
@param [in] GtBlockFrame Pointer to the GT Block Frames
list to be updated.
@param [in] GTBlockTimerFrameList Pointer to the GT Block Frame
Information List.
@param [in] GTBlockFrameCount Number of GT Block Frames.
@retval EFI_SUCCESS Table generated successfully.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
**/
STATIC
EFI_STATUS
AddGTBlockTimerFrames (
IN EFI_ACPI_6_3_GTDT_GT_BLOCK_TIMER_STRUCTURE * GtBlockFrame,
IN CONST CM_ARM_GTBLOCK_TIMER_FRAME_INFO * GTBlockTimerFrameList,
IN UINT32 GTBlockFrameCount
)
{
BOOLEAN IsFrameNumberDuplicated;
ASSERT (GtBlockFrame != NULL);
ASSERT (GTBlockTimerFrameList != NULL);
IsFrameNumberDuplicated = FindDuplicateValue (
GTBlockTimerFrameList,
GTBlockFrameCount,
sizeof (CM_ARM_GTBLOCK_TIMER_FRAME_INFO),
IsGtFrameNumberEqual
);
// Duplicate entry was found so timer frame numbers provided are invalid
if (IsFrameNumberDuplicated) {
return EFI_INVALID_PARAMETER;
}
while (GTBlockFrameCount-- != 0) {
DEBUG ((
DEBUG_INFO,
"GTDT: GtBlockFrame = 0x%p\n",
GtBlockFrame
));
if (GTBlockTimerFrameList->FrameNumber >= 8) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Frame number %d is not in the range 0-7\n",
GTBlockTimerFrameList->FrameNumber
));
return EFI_INVALID_PARAMETER;
}
GtBlockFrame->GTFrameNumber = GTBlockTimerFrameList->FrameNumber;
GtBlockFrame->Reserved[0] = EFI_ACPI_RESERVED_BYTE;
GtBlockFrame->Reserved[1] = EFI_ACPI_RESERVED_BYTE;
GtBlockFrame->Reserved[2] = EFI_ACPI_RESERVED_BYTE;
GtBlockFrame->CntBaseX = GTBlockTimerFrameList->PhysicalAddressCntBase;
GtBlockFrame->CntEL0BaseX =
GTBlockTimerFrameList->PhysicalAddressCntEL0Base;
GtBlockFrame->GTxPhysicalTimerGSIV =
GTBlockTimerFrameList->PhysicalTimerGSIV;
GtBlockFrame->GTxPhysicalTimerFlags =
GTBlockTimerFrameList->PhysicalTimerFlags;
GtBlockFrame->GTxVirtualTimerGSIV = GTBlockTimerFrameList->VirtualTimerGSIV;
GtBlockFrame->GTxVirtualTimerFlags =
GTBlockTimerFrameList->VirtualTimerFlags;
GtBlockFrame->GTxCommonFlags = GTBlockTimerFrameList->CommonFlags;
GtBlockFrame++;
GTBlockTimerFrameList++;
} // for
return EFI_SUCCESS;
}
/** Add the GT Block Timers in the GTDT Table.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol Interface.
@param [in] Gtdt Pointer to the GTDT Table.
@param [in] GTBlockOffset Offset of the GT Block
information in the GTDT Table.
@param [in] GTBlockInfo Pointer to the GT Block
Information List.
@param [in] BlockTimerCount Number of GT Block Timers.
@retval EFI_SUCCESS Table generated successfully.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
**/
STATIC
EFI_STATUS
AddGTBlockList (
IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST CfgMgrProtocol,
IN EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE * CONST Gtdt,
IN CONST UINT32 GTBlockOffset,
IN CONST CM_ARM_GTBLOCK_INFO * GTBlockInfo,
IN UINT32 BlockTimerCount
)
{
EFI_STATUS Status;
EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE * GTBlock;
EFI_ACPI_6_3_GTDT_GT_BLOCK_TIMER_STRUCTURE * GtBlockFrame;
CM_ARM_GTBLOCK_TIMER_FRAME_INFO * GTBlockTimerFrameList;
UINT32 GTBlockTimerFrameCount;
UINTN Length;
ASSERT (Gtdt != NULL);
ASSERT (GTBlockInfo != NULL);
GTBlock = (EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE *)((UINT8*)Gtdt +
GTBlockOffset);
while (BlockTimerCount-- != 0) {
DEBUG ((DEBUG_INFO, "GTDT: GTBlock = 0x%p\n", GTBlock));
Status = GetEArmObjGTBlockTimerFrameInfo (
CfgMgrProtocol,
GTBlockInfo->GTBlockTimerFrameToken,
&GTBlockTimerFrameList,
&GTBlockTimerFrameCount
);
if (EFI_ERROR (Status) ||
(GTBlockTimerFrameCount != GTBlockInfo->GTBlockTimerFrameCount)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to get Generic Timer Frames. Status = %r\n",
Status
));
return Status;
}
Length = sizeof (EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE) +
(sizeof (EFI_ACPI_6_3_GTDT_GT_BLOCK_TIMER_STRUCTURE) *
GTBlockInfo->GTBlockTimerFrameCount);
// Check that the length of the GT block does not
// exceed MAX_UINT16
if (Length > MAX_UINT16) {
Status = EFI_INVALID_PARAMETER;
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Too many GT Frames. Count = %d. " \
"Maximum supported GT Block size exceeded. " \
"Status = %r\n",
GTBlockInfo->GTBlockTimerFrameCount,
Status
));
return Status;
}
GTBlock->Type = EFI_ACPI_6_3_GTDT_GT_BLOCK;
GTBlock->Length = (UINT16)Length;
GTBlock->Reserved = EFI_ACPI_RESERVED_BYTE;
GTBlock->CntCtlBase = GTBlockInfo->GTBlockPhysicalAddress;
GTBlock->GTBlockTimerCount = GTBlockInfo->GTBlockTimerFrameCount;
GTBlock->GTBlockTimerOffset =
sizeof (EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE);
GtBlockFrame = (EFI_ACPI_6_3_GTDT_GT_BLOCK_TIMER_STRUCTURE*)
((UINT8*)GTBlock + GTBlock->GTBlockTimerOffset);
// Add GT Block Timer frames
Status = AddGTBlockTimerFrames (
GtBlockFrame,
GTBlockTimerFrameList,
GTBlockTimerFrameCount
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to add Generic Timer Frames. Status = %r\n",
Status
));
return Status;
}
// Next GTBlock
GTBlock = (EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE *)((UINT8*)GTBlock +
GTBlock->Length);
GTBlockInfo++;
}// for
return EFI_SUCCESS;
}
/** Construct the GTDT ACPI table.
Called by the Dynamic Table Manager, this function invokes the
Configuration Manager protocol interface to get the required hardware
information for generating the ACPI table.
If this function allocates any resources then they must be freed
in the FreeXXXXTableResources function.
@param [in] This Pointer to the table generator.
@param [in] AcpiTableInfo Pointer to the ACPI Table Info.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol Interface.
@param [out] Table Pointer to the constructed ACPI Table.
@retval EFI_SUCCESS Table generated successfully.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
@retval EFI_NOT_FOUND The required object was not found.
@retval EFI_BAD_BUFFER_SIZE The size returned by the Configuration
Manager is less than the Object size for the
requested object.
@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
**/
STATIC
EFI_STATUS
EFIAPI
BuildGtdtTable (
IN CONST ACPI_TABLE_GENERATOR * CONST This,
IN CONST CM_STD_OBJ_ACPI_TABLE_INFO * CONST AcpiTableInfo,
IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST CfgMgrProtocol,
OUT EFI_ACPI_DESCRIPTION_HEADER ** CONST Table
)
{
EFI_STATUS Status;
UINT32 TableSize;
UINT32 PlatformTimerCount;
UINT32 WatchdogCount;
UINT32 BlockTimerCount;
CM_ARM_GENERIC_WATCHDOG_INFO * WatchdogInfoList;
CM_ARM_GTBLOCK_INFO * GTBlockInfo;
EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE * Gtdt;
UINT32 Idx;
UINT32 GTBlockOffset;
UINT32 WatchdogOffset;
ASSERT (This != NULL);
ASSERT (AcpiTableInfo != NULL);
ASSERT (CfgMgrProtocol != NULL);
ASSERT (Table != NULL);
ASSERT (AcpiTableInfo->TableGeneratorId == This->GeneratorID);
ASSERT (AcpiTableInfo->AcpiTableSignature == This->AcpiTableSignature);
if ((AcpiTableInfo->AcpiTableRevision < This->MinAcpiTableRevision) ||
(AcpiTableInfo->AcpiTableRevision > This->AcpiTableRevision)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Requested table revision = %d, is not supported."
"Supported table revision: Minimum = %d, Maximum = %d\n",
AcpiTableInfo->AcpiTableRevision,
This->MinAcpiTableRevision,
This->AcpiTableRevision
));
return EFI_INVALID_PARAMETER;
}
*Table = NULL;
Status = GetEArmObjPlatformGTBlockInfo (
CfgMgrProtocol,
CM_NULL_TOKEN,
&GTBlockInfo,
&BlockTimerCount
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to Get Platform GT Block Information." \
" Status = %r\n",
Status
));
goto error_handler;
}
Status = GetEArmObjPlatformGenericWatchdogInfo (
CfgMgrProtocol,
CM_NULL_TOKEN,
&WatchdogInfoList,
&WatchdogCount
);
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to Get Platform Generic Watchdog Information." \
" Status = %r\n",
Status
));
goto error_handler;
}
DEBUG ((
DEBUG_INFO,
"GTDT: BlockTimerCount = %d, WatchdogCount = %d\n",
BlockTimerCount,
WatchdogCount
));
// Calculate the GTDT Table Size
PlatformTimerCount = 0;
TableSize = sizeof (EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE);
if (BlockTimerCount != 0) {
GTBlockOffset = TableSize;
PlatformTimerCount += BlockTimerCount;
TableSize += (sizeof (EFI_ACPI_6_3_GTDT_GT_BLOCK_STRUCTURE) *
BlockTimerCount);
for (Idx = 0; Idx < BlockTimerCount; Idx++) {
if (GTBlockInfo[Idx].GTBlockTimerFrameCount > 8) {
Status = EFI_INVALID_PARAMETER;
DEBUG ((
DEBUG_ERROR,
"GTDT: GTBockFrameCount cannot be more than 8." \
" GTBockFrameCount = %d, Status = %r\n",
GTBlockInfo[Idx].GTBlockTimerFrameCount,
Status
));
goto error_handler;
}
TableSize += (sizeof (EFI_ACPI_6_3_GTDT_GT_BLOCK_TIMER_STRUCTURE) *
GTBlockInfo[Idx].GTBlockTimerFrameCount);
}
DEBUG ((
DEBUG_INFO,
"GTDT: GTBockOffset = 0x%x, PLATFORM_TIMER_COUNT = %d\n",
GTBlockOffset,
PlatformTimerCount
));
}
WatchdogOffset = 0;
if (WatchdogCount != 0) {
WatchdogOffset = TableSize;
PlatformTimerCount += WatchdogCount;
TableSize += (sizeof (EFI_ACPI_6_3_GTDT_SBSA_GENERIC_WATCHDOG_STRUCTURE) *
WatchdogCount);
DEBUG ((
DEBUG_INFO,
"GTDT: WatchdogOffset = 0x%x, PLATFORM_TIMER_COUNT = %d\n",
WatchdogOffset,
PlatformTimerCount
));
}
*Table = (EFI_ACPI_DESCRIPTION_HEADER*)AllocateZeroPool (TableSize);
if (*Table == NULL) {
Status = EFI_OUT_OF_RESOURCES;
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to allocate memory for GTDT Table, Size = %d," \
" Status = %r\n",
TableSize,
Status
));
goto error_handler;
}
Gtdt = (EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE*)*Table;
DEBUG ((
DEBUG_INFO,
"GTDT: Gtdt = 0x%p TableSize = 0x%x\n",
Gtdt,
TableSize
));
Status = AddAcpiHeader (
CfgMgrProtocol,
This,
&Gtdt->Header,
AcpiTableInfo,
TableSize
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to add ACPI header. Status = %r\n",
Status
));
goto error_handler;
}
Status = AddGenericTimerInfo (
CfgMgrProtocol,
Gtdt,
PlatformTimerCount,
AcpiTableInfo->AcpiTableRevision
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to add Generic Timer Info. Status = %r\n",
Status
));
goto error_handler;
}
if (BlockTimerCount != 0) {
Status = AddGTBlockList (
CfgMgrProtocol,
Gtdt,
GTBlockOffset,
GTBlockInfo,
BlockTimerCount
);
if (EFI_ERROR (Status)) {
DEBUG ((
DEBUG_ERROR,
"ERROR: GTDT: Failed to add GT Block timers. Status = %r\n",
Status
));
goto error_handler;
}
}
if (WatchdogCount != 0) {
AddGenericWatchdogList (
Gtdt,
WatchdogOffset,
WatchdogInfoList,
WatchdogCount
);
}
return Status;
error_handler:
if (*Table != NULL) {
FreePool (*Table);
*Table = NULL;
}
return Status;
}
/** Free any resources allocated for constructing the GTDT.
@param [in] This Pointer to the table generator.
@param [in] AcpiTableInfo Pointer to the ACPI Table Info.
@param [in] CfgMgrProtocol Pointer to the Configuration Manager
Protocol Interface.
@param [in, out] Table Pointer to the ACPI Table.
@retval EFI_SUCCESS The resources were freed successfully.
@retval EFI_INVALID_PARAMETER The table pointer is NULL or invalid.
**/
STATIC
EFI_STATUS
FreeGtdtTableResources (
IN CONST ACPI_TABLE_GENERATOR * CONST This,
IN CONST CM_STD_OBJ_ACPI_TABLE_INFO * CONST AcpiTableInfo,
IN CONST EDKII_CONFIGURATION_MANAGER_PROTOCOL * CONST CfgMgrProtocol,
IN OUT EFI_ACPI_DESCRIPTION_HEADER ** CONST Table
)
{
ASSERT (This != NULL);
ASSERT (AcpiTableInfo != NULL);
ASSERT (CfgMgrProtocol != NULL);
ASSERT (AcpiTableInfo->TableGeneratorId == This->GeneratorID);
ASSERT (AcpiTableInfo->AcpiTableSignature == This->AcpiTableSignature);
if ((Table == NULL) || (*Table == NULL)) {
DEBUG ((DEBUG_ERROR, "ERROR: GTDT: Invalid Table Pointer\n"));
ASSERT ((Table != NULL) && (*Table != NULL));
return EFI_INVALID_PARAMETER;
}
FreePool (*Table);
*Table = NULL;
return EFI_SUCCESS;
}
/** This macro defines the GTDT Table Generator revision.
*/
#define GTDT_GENERATOR_REVISION CREATE_REVISION (1, 0)
/** The interface for the GTDT Table Generator.
*/
STATIC
CONST
ACPI_TABLE_GENERATOR GtdtGenerator = {
// Generator ID
CREATE_STD_ACPI_TABLE_GEN_ID (EStdAcpiTableIdGtdt),
// Generator Description
L"ACPI.STD.GTDT.GENERATOR",
// ACPI Table Signature
EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE_SIGNATURE,
// ACPI Table Revision supported by this Generator
EFI_ACPI_6_3_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION,
// Minimum ACPI Table Revision supported by this Generator
EFI_ACPI_6_2_GENERIC_TIMER_DESCRIPTION_TABLE_REVISION,
// Creator ID
TABLE_GENERATOR_CREATOR_ID_ARM,
// Creator Revision
GTDT_GENERATOR_REVISION,
// Build Table function
BuildGtdtTable,
// Free Resource function
FreeGtdtTableResources,
// Extended build function not needed
NULL,
// Extended build function not implemented by the generator.
// Hence extended free resource function is not required.
NULL
};
/** Register the Generator with the ACPI Table Factory.
@param [in] ImageHandle The handle to the image.
@param [in] SystemTable Pointer to the System Table.
@retval EFI_SUCCESS The Generator is registered.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
@retval EFI_ALREADY_STARTED The Generator for the Table ID
is already registered.
**/
EFI_STATUS
EFIAPI
AcpiGtdtLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE * SystemTable
)
{
EFI_STATUS Status;
Status = RegisterAcpiTableGenerator (&GtdtGenerator);
DEBUG ((DEBUG_INFO, "GTDT: Register Generator. Status = %r\n", Status));
ASSERT_EFI_ERROR (Status);
return Status;
}
/** Deregister the Generator from the ACPI Table Factory.
@param [in] ImageHandle The handle to the image.
@param [in] SystemTable Pointer to the System Table.
@retval EFI_SUCCESS The Generator is deregistered.
@retval EFI_INVALID_PARAMETER A parameter is invalid.
@retval EFI_NOT_FOUND The Generator is not registered.
**/
EFI_STATUS
EFIAPI
AcpiGtdtLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE * SystemTable
)
{
EFI_STATUS Status;
Status = DeregisterAcpiTableGenerator (&GtdtGenerator);
DEBUG ((DEBUG_INFO, "GTDT: Deregister Generator. Status = %r\n", Status));
ASSERT_EFI_ERROR (Status);
return Status;
}
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