/** @file
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Acpi Gnvs Init Library.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <Library/IoLib.h>
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#include <Library/PciLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Protocol/GlobalNvsArea.h>
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extern GLOBAL_REMOVE_IF_UNREFERENCED EFI_GLOBAL_NVS_AREA_PROTOCOL mGlobalNvsArea;
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VOID
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UpdateDsdt (
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IN VOID *Table
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)
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{
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UINT8 *CurrPtr;
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UINT8 *TmpDsdtPointer;
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UINT8 *DsdtPointer;
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UINT32 *Signature;
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UINT8 *Operation;
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UINT32 *Address;
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UINT8 *Value;
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UINT16 *Size;
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BOOLEAN EnterDock = FALSE;
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UINT8 MaximumDsdtPointLength;
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MaximumDsdtPointLength = 20;
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//
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// Fix up the AML code in the DSDT affected by end user options.
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// Fix up the following ASL Code:
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// (1) ACPI Global NVS Memory Base and Size.
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// (2) ACPI Graphics NVS Memory Base and Size.
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// (3) SMBus I/O Base.
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// (4) Thermal Management Methods.
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//
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//
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// Loop through the ASL looking for values that we must fix up.
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//
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CurrPtr = (UINT8 *) Table;
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for (DsdtPointer = CurrPtr;
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DsdtPointer <= (CurrPtr + ((EFI_ACPI_COMMON_HEADER *) CurrPtr)->Length);
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DsdtPointer++
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) {
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Signature = (UINT32 *) DsdtPointer;
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switch (*Signature) {
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//
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// GNVS operation region
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//
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case (SIGNATURE_32 ('G', 'N', 'V', 'S')):
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//
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// Conditional match. For Region Objects, the Operator will always be the
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// byte immediately before the specific name. Therefore, subtract 1 to check
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// the Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_EXT_REGION_OP) {
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Address = (UINT32 *) (DsdtPointer + 6);
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*Address = (UINT32) (UINTN) mGlobalNvsArea.Area;
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Size = (UINT16 *) (DsdtPointer + 11);
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*Size = sizeof (EFI_GLOBAL_NVS_AREA);
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}
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break;
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//
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// _AC0 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '0')):
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//
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// Conditional match. _AC0 is >63 and <4095 bytes, so the package length is 2 bytes.
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// Therefore, subtract 3 to check the Operator.
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//
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Operation = DsdtPointer - 3;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC0 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '0');
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}
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}
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break;
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//
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// _AL0 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '0')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL0 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '0');
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}
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}
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break;
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//
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// _AC1 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '1')):
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//
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// Conditional match. _AC1 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC1 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '1');
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}
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}
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break;
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//
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// _AL1 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '1')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL1 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '1');
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}
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}
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break;
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//
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// _AC2 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '2')):
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//
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// Conditional match. _AC2 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC2 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '2');
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}
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}
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break;
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//
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// _AL2 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '2')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL2 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '2');
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}
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}
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break;
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//
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// _AC3 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '3')):
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//
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// Conditional match. _AC3 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC3 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '3');
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}
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}
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break;
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//
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// _AL3 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '3')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL3 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '3');
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}
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}
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break;
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//
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// _AC4 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '4')):
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//
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// Conditional match. _AC4 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC4 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '4');
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}
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}
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break;
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//
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// _AL4 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '4')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL4 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '4');
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}
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}
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break;
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//
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// _AC5 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '5')):
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//
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// Conditional match. _AC5 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC5 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '5');
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}
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}
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break;
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//
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// _AL5 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '5')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL5 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '5');
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}
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}
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break;
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//
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// _AC6 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '6')):
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//
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// Conditional match. _AC6 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC6 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '6');
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}
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}
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break;
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//
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// _AL6 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '6')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
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//
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// Check if we want _AL6 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '6');
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}
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}
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break;
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//
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// _AC7 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '7')):
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//
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// Conditional match. _AC7 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC7 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
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Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'C', '7');
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}
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}
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break;
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//
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// _AL7 method
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//
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case (SIGNATURE_32 ('_', 'A', 'L', '7')):
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//
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// Conditional match. For Name Objects, the Operator will always be the byte
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// immediately before the specific name. Therefore, subtract 1 to check the
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// Operator.
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//
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Operation = DsdtPointer - 1;
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if (*Operation == AML_NAME_OP) {
|
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//
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// Check if we want _AL7 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
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*Signature = SIGNATURE_32 ('X', 'A', 'L', '7');
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}
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}
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break;
|
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//
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// _AC8 method
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//
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case (SIGNATURE_32 ('_', 'A', 'C', '8')):
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//
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// Conditional match. _AC8 is < 63 bytes, so the package length is 1 byte.
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// Therefore, subtract 2 to check the Operator.
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//
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Operation = DsdtPointer - 2;
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if (*Operation == AML_METHOD_OP) {
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//
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// Check if we want _AC8 enabled
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//
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if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'A', 'C', '8');
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}
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}
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break;
|
|
//
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// _AL8 method
|
//
|
case (SIGNATURE_32 ('_', 'A', 'L', '8')):
|
//
|
// Conditional match. For Name Objects, the Operator will always be the byte
|
// immediately before the specific name. Therefore, subtract 1 to check the
|
// Operator.
|
//
|
Operation = DsdtPointer - 1;
|
if (*Operation == AML_NAME_OP) {
|
|
//
|
// Check if we want _AL8 enabled
|
//
|
if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'A', 'L', '8');
|
}
|
}
|
break;
|
|
//
|
// _AC9 method
|
//
|
case (SIGNATURE_32 ('_', 'A', 'C', '9')):
|
//
|
// Conditional match. _AC9 is < 63 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 2;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _AC9 enabled
|
//
|
if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'A', 'C', '9');
|
}
|
}
|
break;
|
|
//
|
// _AL9 method
|
//
|
case (SIGNATURE_32 ('_', 'A', 'L', '9')):
|
//
|
// Conditional match. For Name Objects, the Operator will always be the byte
|
// immediately before the specific name. Therefore, subtract 1 to check the
|
// Operator.
|
//
|
Operation = DsdtPointer - 1;
|
if (*Operation == AML_NAME_OP) {
|
|
//
|
// Check if we want _AL9 enabled
|
//
|
if (PcdGet8 (PcdDisableActiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'A', 'L', '9');
|
}
|
}
|
break;
|
|
//
|
// _PSL method
|
//
|
case (SIGNATURE_32 ('_', 'P', 'S', 'L')):
|
//
|
// Conditional match. _PSL is < 256 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 3;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _PSL enabled
|
//
|
if (PcdGet8 (PcdDisablePassiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'P', 'S', 'L');
|
}
|
}
|
break;
|
|
//
|
// _PSV method
|
//
|
case (SIGNATURE_32 ('_', 'P', 'S', 'V')):
|
//
|
// Conditional match. _PSV is < 256 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 3;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _PSV enabled
|
//
|
if (PcdGet8 (PcdDisablePassiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'P', 'S', 'V');
|
}
|
}
|
break;
|
|
//
|
// _CRT method
|
//
|
case (SIGNATURE_32 ('_', 'C', 'R', 'T')):
|
//
|
// Conditional match. _CRT is < 256 bytes, so the package length is 1 byte.
|
// Subtract 3 to check the Operator for CRB, subract 2 for Harris Beach.
|
//
|
Operation = DsdtPointer - 3;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _CRT enabled
|
//
|
if (PcdGet8 (PcdDisableCriticalTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'C', 'R', 'T');
|
}
|
}
|
break;
|
|
//
|
// _TC1 method
|
//
|
case (SIGNATURE_32 ('_', 'T', 'C', '1')):
|
//
|
// Conditional match. _TC1 is < 256 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 2;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _TC1 enabled
|
//
|
if (PcdGet8 (PcdDisablePassiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'T', 'C', '1');
|
}
|
}
|
break;
|
|
//
|
// _TC2 method
|
//
|
case (SIGNATURE_32 ('_', 'T', 'C', '2')):
|
//
|
// Conditional match. _TC2 is < 256 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 2;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _TC2 enabled
|
//
|
if (PcdGet8 (PcdDisablePassiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'T', 'C', '2');
|
}
|
}
|
break;
|
|
//
|
// _TSP method
|
//
|
case (SIGNATURE_32 ('_', 'T', 'S', 'P')):
|
//
|
// Conditional match. _TSP is < 256 bytes, so the package length is 1 byte.
|
// Therefore, subtract 2 to check the Operator.
|
//
|
Operation = DsdtPointer - 2;
|
if (*Operation == AML_METHOD_OP) {
|
|
//
|
// Check if we want _TSP enabled
|
//
|
if (PcdGet8 (PcdDisablePassiveTripPoints) == 0) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'T', 'S', 'P');
|
}
|
}
|
break;
|
|
//
|
// Update SS3 Name with Setup value
|
//
|
case (SIGNATURE_32 ('S', 'S', '3', '_')):
|
Operation = DsdtPointer - 1;
|
if (*Operation == AML_NAME_OP) {
|
Value = (UINT8 *) DsdtPointer + 4;
|
*Value = PcdGet8 (PcdAcpiSleepState);
|
}
|
break;
|
//
|
// Update SS4 Name with Setup value
|
//
|
case (SIGNATURE_32 ('S', 'S', '4', '_')):
|
Operation = DsdtPointer - 1;
|
if (*Operation == AML_NAME_OP) {
|
Value = (UINT8 *) DsdtPointer + 4;
|
*Value = PcdGet8 (PcdAcpiHibernate);
|
}
|
break;
|
//
|
// _EJ0 method
|
//
|
case (SIGNATURE_32 ('_', 'E', 'J', '0')):
|
if (PcdGet8 (PcdLowPowerS0Idle)) {
|
//
|
// Remove _EJ0 for SOC
|
//
|
if (*(DsdtPointer-3) == AML_METHOD_OP) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'E', 'J', '0');
|
EnterDock = TRUE;
|
}
|
}
|
break;
|
//
|
// _STA method for Device (\_SB.PCI0.DOCK)
|
//
|
case (SIGNATURE_32 ('_', 'S', 'T', 'A')):
|
if (PcdGet8 (PcdLowPowerS0Idle)) {
|
//
|
// Remove _STA in (\_SB.PCI0.DOCK) for SOC
|
//
|
if ((*(DsdtPointer-3) == AML_METHOD_OP) && (EnterDock)) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'S', 'T', 'A');
|
EnterDock = FALSE;
|
}
|
}
|
break;
|
//
|
// _UPC method for Device (\_SB.PCI0.XHC.RHUB)
|
//
|
case (SIGNATURE_32('H', 'S', '1', '3')):
|
for (TmpDsdtPointer = DsdtPointer;
|
TmpDsdtPointer <= DsdtPointer + MaximumDsdtPointLength;
|
TmpDsdtPointer++){
|
Signature = (UINT32 *) TmpDsdtPointer;
|
switch (*Signature) {
|
case(SIGNATURE_32('U', 'P', 'C', 'P')):
|
Value = (UINT8 *)((UINT32 *)TmpDsdtPointer + 2);
|
break;
|
default:
|
//
|
// Do nothing.
|
//
|
break;
|
}
|
}
|
break;
|
|
|
//
|
// _DCK method
|
//
|
case (SIGNATURE_32 ('_', 'D', 'C', 'K')):
|
if (PcdGet8 (PcdLowPowerS0Idle)) {
|
//
|
// Remove _DCK for SOC
|
//
|
if (*(DsdtPointer-3) == AML_METHOD_OP) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'D', 'C', 'K');
|
}
|
}
|
break;
|
|
//
|
// mask _DEP from CPU's scope if CS disabled.
|
//
|
case (SIGNATURE_32 ('P', 'R', '0', '0')):
|
case (SIGNATURE_32 ('P', 'R', '0', '1')):
|
case (SIGNATURE_32 ('P', 'R', '0', '2')):
|
case (SIGNATURE_32 ('P', 'R', '0', '3')):
|
case (SIGNATURE_32 ('P', 'R', '0', '4')):
|
case (SIGNATURE_32 ('P', 'R', '0', '5')):
|
case (SIGNATURE_32 ('P', 'R', '0', '6')):
|
case (SIGNATURE_32 ('P', 'R', '0', '7')):
|
case (SIGNATURE_32 ('P', 'R', '0', '8')):
|
case (SIGNATURE_32 ('P', 'R', '0', '9')):
|
case (SIGNATURE_32 ('P', 'R', '1', '0')):
|
case (SIGNATURE_32 ('P', 'R', '1', '1')):
|
case (SIGNATURE_32 ('P', 'R', '1', '2')):
|
case (SIGNATURE_32 ('P', 'R', '1', '3')):
|
case (SIGNATURE_32 ('P', 'R', '1', '4')):
|
case (SIGNATURE_32 ('P', 'R', '1', '5')):
|
|
if (PcdGet8 (PcdLowPowerS0Idle) == 0) {
|
for (TmpDsdtPointer = DsdtPointer; TmpDsdtPointer <= DsdtPointer + MaximumDsdtPointLength; TmpDsdtPointer++){
|
Signature = (UINT32 *) TmpDsdtPointer;
|
switch (*Signature) {
|
case(SIGNATURE_32('_', 'D', 'E', 'P')):
|
*(UINT8 *) TmpDsdtPointer = 'X';
|
break;
|
default:
|
//
|
// Do nothing.
|
//
|
break;
|
}
|
}
|
}
|
break;
|
|
//
|
// _EDL name
|
//
|
case (SIGNATURE_32 ('_', 'E', 'D', 'L')):
|
if (PcdGet8 (PcdLowPowerS0Idle)) {
|
//
|
// Remove _EDL for SOC
|
//
|
if (*(DsdtPointer-1) == AML_NAME_OP) {
|
Signature = (UINT32 *) DsdtPointer;
|
*Signature = SIGNATURE_32 ('X', 'E', 'D', 'L');
|
}
|
}
|
break;
|
|
default:
|
//
|
// Do nothing.
|
//
|
break;
|
}
|
}
|
}
|
|
