378175d258
signed off by: jyao1 reviewed by: jfan12 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12397 6f19259b-4bc3-4df7-8a09-765794883524
533 lines
18 KiB
C
533 lines
18 KiB
C
/** @file
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This is an implementation of the ACPI S3 Save protocol. This is defined in
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S3 boot path specification 0.9.
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Copyright (c) 2006 - 2011, 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
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of the BSD License which accompanies this distribution. The
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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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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/HobLib.h>
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#include <Library/LockBoxLib.h>
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#include <Library/PcdLib.h>
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#include <Library/DebugLib.h>
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#include <Guid/AcpiVariableCompatibility.h>
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#include <Guid/AcpiS3Context.h>
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#include <Guid/Acpi.h>
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#include <Protocol/AcpiS3Save.h>
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#include <IndustryStandard/Acpi.h>
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#include "AcpiS3Save.h"
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/**
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Hook point for AcpiVariableThunkPlatform for InstallAcpiS3Save.
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**/
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VOID
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InstallAcpiS3SaveThunk (
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VOID
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);
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/**
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Hook point for AcpiVariableThunkPlatform for S3Ready.
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@param AcpiS3Context ACPI s3 context
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**/
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VOID
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S3ReadyThunkPlatform (
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IN ACPI_S3_CONTEXT *AcpiS3Context
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);
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UINTN mLegacyRegionSize;
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EFI_ACPI_S3_SAVE_PROTOCOL mS3Save = {
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LegacyGetS3MemorySize,
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S3Ready,
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};
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EFI_GUID mAcpiS3IdtrProfileGuid = {
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0xdea652b0, 0xd587, 0x4c54, 0xb5, 0xb4, 0xc6, 0x82, 0xe7, 0xa0, 0xaa, 0x3d
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};
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/**
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Allocate EfiACPIMemoryNVS below 4G memory address.
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This function allocates EfiACPIMemoryNVS below 4G memory address.
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@param Size Size of memory to allocate.
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@return Allocated address for output.
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**/
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VOID*
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AllocateAcpiNvsMemoryBelow4G (
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IN UINTN Size
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)
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{
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UINTN Pages;
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EFI_PHYSICAL_ADDRESS Address;
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EFI_STATUS Status;
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VOID* Buffer;
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Pages = EFI_SIZE_TO_PAGES (Size);
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Address = 0xffffffff;
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Status = gBS->AllocatePages (
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AllocateMaxAddress,
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EfiACPIMemoryNVS,
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Pages,
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&Address
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);
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ASSERT_EFI_ERROR (Status);
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Buffer = (VOID *) (UINTN) Address;
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ZeroMem (Buffer, Size);
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return Buffer;
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}
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/**
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To find Facs in Acpi tables.
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To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored
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in the table.
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@param AcpiTableGuid The guid used to find ACPI table in UEFI ConfigurationTable.
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@return Facs table pointer.
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**/
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EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *
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FindAcpiFacsTableByAcpiGuid (
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IN EFI_GUID *AcpiTableGuid
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)
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{
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EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;
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EFI_ACPI_DESCRIPTION_HEADER *Rsdt;
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EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt;
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EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;
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UINTN Index;
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UINT32 Data32;
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Rsdp = NULL;
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Rsdt = NULL;
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Fadt = NULL;
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//
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// found ACPI table RSD_PTR from system table
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//
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for (Index = 0; Index < gST->NumberOfTableEntries; Index++) {
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if (CompareGuid (&(gST->ConfigurationTable[Index].VendorGuid), AcpiTableGuid)) {
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//
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// A match was found.
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//
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Rsdp = gST->ConfigurationTable[Index].VendorTable;
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break;
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}
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}
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if (Rsdp == NULL) {
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return NULL;
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}
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Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN) Rsdp->RsdtAddress;
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if (Rsdt == NULL || Rsdt->Signature != EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
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return NULL;
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}
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for (Index = sizeof (EFI_ACPI_DESCRIPTION_HEADER); Index < Rsdt->Length; Index = Index + sizeof (UINT32)) {
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Data32 = *(UINT32 *) ((UINT8 *) Rsdt + Index);
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Fadt = (EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE *) (UINT32 *) (UINTN) Data32;
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if (Fadt->Header.Signature == EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE) {
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break;
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}
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}
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if (Fadt == NULL || Fadt->Header.Signature != EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE) {
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return NULL;
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}
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Facs = (EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)Fadt->FirmwareCtrl;
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return Facs;
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}
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/**
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To find Facs in Acpi tables.
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To find Firmware ACPI control strutcure in Acpi Tables since the S3 waking vector is stored
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in the table.
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@return Facs table pointer.
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**/
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EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *
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FindAcpiFacsTable (
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VOID
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)
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{
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EFI_ACPI_2_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;
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Facs = FindAcpiFacsTableByAcpiGuid (&gEfiAcpi20TableGuid);
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if (Facs != NULL) {
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return Facs;
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}
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return FindAcpiFacsTableByAcpiGuid (&gEfiAcpi10TableGuid);
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}
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/**
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Allocates and fills in the Page Directory and Page Table Entries to
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establish a 1:1 Virtual to Physical mapping.
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If BootScriptExector driver will run in 64-bit mode, this function will establish the 1:1
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virtual to physical mapping page table.
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If BootScriptExector driver will not run in 64-bit mode, this function will do nothing.
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@return the 1:1 Virtual to Physical identity mapping page table base address.
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**/
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EFI_PHYSICAL_ADDRESS
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S3CreateIdentityMappingPageTables (
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VOID
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)
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{
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if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {
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UINT32 RegEax;
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UINT32 RegEdx;
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UINT8 PhysicalAddressBits;
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EFI_PHYSICAL_ADDRESS PageAddress;
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UINTN IndexOfPml4Entries;
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UINTN IndexOfPdpEntries;
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UINTN IndexOfPageDirectoryEntries;
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UINT32 NumberOfPml4EntriesNeeded;
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UINT32 NumberOfPdpEntriesNeeded;
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PAGE_MAP_AND_DIRECTORY_POINTER *PageMapLevel4Entry;
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PAGE_MAP_AND_DIRECTORY_POINTER *PageMap;
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PAGE_MAP_AND_DIRECTORY_POINTER *PageDirectoryPointerEntry;
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PAGE_TABLE_ENTRY *PageDirectoryEntry;
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EFI_PHYSICAL_ADDRESS S3NvsPageTableAddress;
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UINTN TotalPageTableSize;
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VOID *Hob;
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BOOLEAN Page1GSupport;
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PAGE_TABLE_1G_ENTRY *PageDirectory1GEntry;
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Page1GSupport = FALSE;
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if (PcdGetBool(PcdUse1GPageTable)) {
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AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
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if (RegEax >= 0x80000001) {
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AsmCpuid (0x80000001, NULL, NULL, NULL, &RegEdx);
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if ((RegEdx & BIT26) != 0) {
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Page1GSupport = TRUE;
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}
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}
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}
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//
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// Get physical address bits supported.
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//
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Hob = GetFirstHob (EFI_HOB_TYPE_CPU);
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if (Hob != NULL) {
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PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;
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} else {
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AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
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if (RegEax >= 0x80000008) {
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AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
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PhysicalAddressBits = (UINT8) RegEax;
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} else {
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PhysicalAddressBits = 36;
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}
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}
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//
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// IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.
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//
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ASSERT (PhysicalAddressBits <= 52);
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if (PhysicalAddressBits > 48) {
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PhysicalAddressBits = 48;
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}
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//
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// Calculate the table entries needed.
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//
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if (PhysicalAddressBits <= 39 ) {
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NumberOfPml4EntriesNeeded = 1;
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NumberOfPdpEntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 30));
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} else {
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NumberOfPml4EntriesNeeded = (UINT32)LShiftU64 (1, (PhysicalAddressBits - 39));
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NumberOfPdpEntriesNeeded = 512;
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}
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//
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// We need calculate whole page size then allocate once, because S3 restore page table does not know each page in Nvs.
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//
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if (!Page1GSupport) {
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TotalPageTableSize = (UINTN)(1 + NumberOfPml4EntriesNeeded + NumberOfPml4EntriesNeeded * NumberOfPdpEntriesNeeded);
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} else {
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TotalPageTableSize = (UINTN)(1 + NumberOfPml4EntriesNeeded);
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}
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DEBUG ((EFI_D_ERROR, "TotalPageTableSize - %x pages\n", TotalPageTableSize));
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//
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// By architecture only one PageMapLevel4 exists - so lets allocate storgage for it.
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//
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S3NvsPageTableAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateAcpiNvsMemoryBelow4G (EFI_PAGES_TO_SIZE(TotalPageTableSize));
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ASSERT (S3NvsPageTableAddress != 0);
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PageMap = (PAGE_MAP_AND_DIRECTORY_POINTER *)(UINTN)S3NvsPageTableAddress;
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S3NvsPageTableAddress += SIZE_4KB;
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PageMapLevel4Entry = PageMap;
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PageAddress = 0;
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for (IndexOfPml4Entries = 0; IndexOfPml4Entries < NumberOfPml4EntriesNeeded; IndexOfPml4Entries++, PageMapLevel4Entry++) {
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//
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// Each PML4 entry points to a page of Page Directory Pointer entires.
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// So lets allocate space for them and fill them in in the IndexOfPdpEntries loop.
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//
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PageDirectoryPointerEntry = (PAGE_MAP_AND_DIRECTORY_POINTER *)(UINTN)S3NvsPageTableAddress;
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S3NvsPageTableAddress += SIZE_4KB;
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//
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// Make a PML4 Entry
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//
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PageMapLevel4Entry->Uint64 = (UINT64)(UINTN)PageDirectoryPointerEntry;
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PageMapLevel4Entry->Bits.ReadWrite = 1;
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PageMapLevel4Entry->Bits.Present = 1;
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if (Page1GSupport) {
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PageDirectory1GEntry = (PAGE_TABLE_1G_ENTRY *)(UINTN)PageDirectoryPointerEntry;
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for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectory1GEntry++, PageAddress += SIZE_1GB) {
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//
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// Fill in the Page Directory entries
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//
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PageDirectory1GEntry->Uint64 = (UINT64)PageAddress;
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PageDirectory1GEntry->Bits.ReadWrite = 1;
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PageDirectory1GEntry->Bits.Present = 1;
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PageDirectory1GEntry->Bits.MustBe1 = 1;
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}
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} else {
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for (IndexOfPdpEntries = 0; IndexOfPdpEntries < NumberOfPdpEntriesNeeded; IndexOfPdpEntries++, PageDirectoryPointerEntry++) {
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//
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// Each Directory Pointer entries points to a page of Page Directory entires.
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// So allocate space for them and fill them in in the IndexOfPageDirectoryEntries loop.
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//
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PageDirectoryEntry = (PAGE_TABLE_ENTRY *)(UINTN)S3NvsPageTableAddress;
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S3NvsPageTableAddress += SIZE_4KB;
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//
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// Fill in a Page Directory Pointer Entries
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//
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PageDirectoryPointerEntry->Uint64 = (UINT64)(UINTN)PageDirectoryEntry;
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PageDirectoryPointerEntry->Bits.ReadWrite = 1;
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PageDirectoryPointerEntry->Bits.Present = 1;
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for (IndexOfPageDirectoryEntries = 0; IndexOfPageDirectoryEntries < 512; IndexOfPageDirectoryEntries++, PageDirectoryEntry++, PageAddress += SIZE_2MB) {
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//
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// Fill in the Page Directory entries
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//
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PageDirectoryEntry->Uint64 = (UINT64)PageAddress;
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PageDirectoryEntry->Bits.ReadWrite = 1;
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PageDirectoryEntry->Bits.Present = 1;
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PageDirectoryEntry->Bits.MustBe1 = 1;
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}
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}
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}
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}
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return (EFI_PHYSICAL_ADDRESS) (UINTN) PageMap;
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} else {
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//
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// If DXE is running 32-bit mode, no need to establish page table.
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//
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return (EFI_PHYSICAL_ADDRESS) 0;
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}
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}
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/**
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Gets the buffer of legacy memory below 1 MB
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This function is to get the buffer in legacy memory below 1MB that is required during S3 resume.
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@param This A pointer to the EFI_ACPI_S3_SAVE_PROTOCOL instance.
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@param Size The returned size of legacy memory below 1 MB.
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@retval EFI_SUCCESS Size is successfully returned.
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@retval EFI_INVALID_PARAMETER The pointer Size is NULL.
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**/
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EFI_STATUS
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EFIAPI
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LegacyGetS3MemorySize (
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IN EFI_ACPI_S3_SAVE_PROTOCOL *This,
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OUT UINTN *Size
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)
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{
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if (Size == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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*Size = mLegacyRegionSize;
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return EFI_SUCCESS;
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}
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/**
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Prepares all information that is needed in the S3 resume boot path.
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Allocate the resources or prepare informations and save in ACPI variable set for S3 resume boot path
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@param This A pointer to the EFI_ACPI_S3_SAVE_PROTOCOL instance.
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@param LegacyMemoryAddress The base address of legacy memory.
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@retval EFI_NOT_FOUND Some necessary information cannot be found.
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@retval EFI_SUCCESS All information was saved successfully.
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@retval EFI_OUT_OF_RESOURCES Resources were insufficient to save all the information.
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@retval EFI_INVALID_PARAMETER The memory range is not located below 1 MB.
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**/
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EFI_STATUS
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EFIAPI
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S3Ready (
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IN EFI_ACPI_S3_SAVE_PROTOCOL *This,
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IN VOID *LegacyMemoryAddress
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)
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS AcpiS3ContextBuffer;
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ACPI_S3_CONTEXT *AcpiS3Context;
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STATIC BOOLEAN AlreadyEntered;
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IA32_DESCRIPTOR *Idtr;
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IA32_IDT_GATE_DESCRIPTOR *IdtGate;
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DEBUG ((EFI_D_INFO, "S3Ready!\n"));
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//
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// Platform may invoke AcpiS3Save->S3Save() before ExitPmAuth, because we need save S3 information there, while BDS ReadyToBoot may invoke it again.
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// So if 2nd S3Save() is triggered later, we need ignore it.
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//
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if (AlreadyEntered) {
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return EFI_SUCCESS;
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}
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AlreadyEntered = TRUE;
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AcpiS3Context = AllocateAcpiNvsMemoryBelow4G (sizeof(*AcpiS3Context));
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ASSERT (AcpiS3Context != NULL);
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AcpiS3ContextBuffer = (EFI_PHYSICAL_ADDRESS)(UINTN)AcpiS3Context;
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//
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// Get ACPI Table because we will save its position to variable
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//
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AcpiS3Context->AcpiFacsTable = (EFI_PHYSICAL_ADDRESS)(UINTN)FindAcpiFacsTable ();
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ASSERT (AcpiS3Context->AcpiFacsTable != 0);
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IdtGate = AllocateAcpiNvsMemoryBelow4G (sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 + sizeof(IA32_DESCRIPTOR));
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Idtr = (IA32_DESCRIPTOR *)(IdtGate + 0x100);
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Idtr->Base = (UINTN)IdtGate;
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Idtr->Limit = (UINT16)(sizeof(IA32_IDT_GATE_DESCRIPTOR) * 0x100 - 1);
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AcpiS3Context->IdtrProfile = (EFI_PHYSICAL_ADDRESS)(UINTN)Idtr;
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Status = SaveLockBox (
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&mAcpiS3IdtrProfileGuid,
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(VOID *)(UINTN)Idtr,
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(UINTN)sizeof(IA32_DESCRIPTOR)
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);
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ASSERT_EFI_ERROR (Status);
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Status = SetLockBoxAttributes (&mAcpiS3IdtrProfileGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);
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ASSERT_EFI_ERROR (Status);
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//
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// Allocate page table
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//
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AcpiS3Context->S3NvsPageTableAddress = S3CreateIdentityMappingPageTables ();
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//
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// Allocate stack
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//
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AcpiS3Context->BootScriptStackSize = PcdGet32 (PcdS3BootScriptStackSize);
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AcpiS3Context->BootScriptStackBase = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateAcpiNvsMemoryBelow4G (PcdGet32 (PcdS3BootScriptStackSize));
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ASSERT (AcpiS3Context->BootScriptStackBase != 0);
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//
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// Allocate a code buffer < 4G for S3 debug to load external code
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//
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AcpiS3Context->S3DebugBufferAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocateAcpiNvsMemoryBelow4G (EFI_PAGE_SIZE);
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DEBUG((EFI_D_INFO, "AcpiS3Context: AcpiFacsTable is 0x%8x\n", AcpiS3Context->AcpiFacsTable));
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DEBUG((EFI_D_INFO, "AcpiS3Context: IdtrProfile is 0x%8x\n", AcpiS3Context->IdtrProfile));
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DEBUG((EFI_D_INFO, "AcpiS3Context: S3NvsPageTableAddress is 0x%8x\n", AcpiS3Context->S3NvsPageTableAddress));
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DEBUG((EFI_D_INFO, "AcpiS3Context: S3DebugBufferAddress is 0x%8x\n", AcpiS3Context->S3DebugBufferAddress));
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Status = SaveLockBox (
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&gEfiAcpiVariableGuid,
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&AcpiS3ContextBuffer,
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sizeof(AcpiS3ContextBuffer)
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);
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ASSERT_EFI_ERROR (Status);
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Status = SaveLockBox (
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&gEfiAcpiS3ContextGuid,
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(VOID *)(UINTN)AcpiS3Context,
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(UINTN)sizeof(*AcpiS3Context)
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);
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ASSERT_EFI_ERROR (Status);
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|
Status = SetLockBoxAttributes (&gEfiAcpiS3ContextGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
if (FeaturePcdGet(PcdFrameworkCompatibilitySupport)) {
|
|
S3ReadyThunkPlatform (AcpiS3Context);
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
The Driver Entry Point.
|
|
|
|
The function is the driver Entry point which will produce AcpiS3SaveProtocol.
|
|
|
|
@param ImageHandle A handle for the image that is initializing this driver
|
|
@param SystemTable A pointer to the EFI system table
|
|
|
|
@retval EFI_SUCCESS: Driver initialized successfully
|
|
@retval EFI_LOAD_ERROR: Failed to Initialize or has been loaded
|
|
@retval EFI_OUT_OF_RESOURCES Could not allocate needed resources
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InstallAcpiS3Save (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
if (!FeaturePcdGet(PcdPlatformCsmSupport)) {
|
|
//
|
|
// More memory for no CSM tip, because GDT need relocation
|
|
//
|
|
mLegacyRegionSize = 0x250;
|
|
} else {
|
|
mLegacyRegionSize = 0x100;
|
|
}
|
|
|
|
if (FeaturePcdGet(PcdFrameworkCompatibilitySupport)) {
|
|
InstallAcpiS3SaveThunk ();
|
|
}
|
|
|
|
Status = gBS->InstallProtocolInterface (
|
|
&ImageHandle,
|
|
&gEfiAcpiS3SaveProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&mS3Save
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
return Status;
|
|
}
|