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c63d90085b
This library provides interface related to restart and shudown the LoongArch64 virtual machine. BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584 Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Bibo Mao <maobibo@loongson.cn> Cc: Dongyan Qian <qiandongyan@loongson.cn> Signed-off-by: Chao Li <lichao@loongson.cn> Co-authored-by: Xianglai Li <lixianglai@loongson.cn> Co-authored-by: Bibo Mao <maobibo@loongson.cn>
263 lines
8.8 KiB
C
263 lines
8.8 KiB
C
/** @file
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Dxe ResetSystem library implementation.
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Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/DebugLib.h>
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#include <Library/DxeServicesTableLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeLib.h> // EfiConvertPointer()
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#include "ResetSystemAcpiGed.h"
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/**
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Modifies the attributes to Runtime type for a page size memory region.
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@param BaseAddress Specified start address
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@retval EFI_SUCCESS The attributes were set for the memory region.
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@retval EFI_INVALID_PARAMETER Length is zero.
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@retval EFI_UNSUPPORTED The processor does not support one or more bytes of the memory
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resource range specified by BaseAddress and Length.
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@retval EFI_UNSUPPORTED The bit mask of attributes is not support for the memory resource
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range specified by BaseAddress and Length.
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@retval EFI_ACCESS_DEFINED The attributes for the memory resource range specified by
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BaseAddress and Length cannot be modified.
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@retval EFI_OUT_OF_RESOURCES There are not enough system resources to modify the attributes of
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the memory resource range.
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@retval EFI_NOT_AVAILABLE_YET The attributes cannot be set because CPU architectural protocol is
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not available yet.
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**/
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STATIC
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EFI_STATUS
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SetMemoryAttributesRunTime (
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UINTN Address
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)
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{
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EFI_STATUS Status;
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EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;
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Address &= ~EFI_PAGE_MASK;
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Status = gDS->GetMemorySpaceDescriptor (Address, &Descriptor);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a: GetMemorySpaceDescriptor failed\n", __func__));
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return Status;
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}
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if (Descriptor.GcdMemoryType == EfiGcdMemoryTypeNonExistent) {
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Status = gDS->AddMemorySpace (
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EfiGcdMemoryTypeMemoryMappedIo,
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Address,
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EFI_PAGE_SIZE,
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EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a: AddMemorySpace failed\n", __func__));
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return Status;
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}
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Status = gDS->SetMemorySpaceAttributes (
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Address,
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EFI_PAGE_SIZE,
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EFI_MEMORY_RUNTIME
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a:%d SetMemorySpaceAttributes failed\n", __func__, __LINE__));
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return Status;
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}
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} else if (!(Descriptor.Attributes & EFI_MEMORY_RUNTIME)) {
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Status = gDS->SetMemorySpaceAttributes (
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Address,
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EFI_PAGE_SIZE,
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Descriptor.Attributes | EFI_MEMORY_RUNTIME
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a:%d SetMemorySpaceAttributes failed\n", __func__, __LINE__));
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return Status;
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}
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}
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return EFI_SUCCESS;
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}
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/**
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Find the power manager related info from ACPI table
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@retval RETURN_SUCCESS Successfully find out all the required information.
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@retval RETURN_NOT_FOUND Failed to find the required info.
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**/
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STATIC
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EFI_STATUS
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GetPowerManagerByParseAcpiInfo (
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VOID
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)
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{
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EFI_ACPI_5_0_FIXED_ACPI_DESCRIPTION_TABLE *Fadt = NULL;
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EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp = NULL;
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EFI_ACPI_DESCRIPTION_HEADER *Xsdt = NULL;
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EFI_ACPI_DESCRIPTION_HEADER *Rsdt = NULL;
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UINT32 *Entry32 = NULL;
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UINTN Entry32Num;
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UINT32 *Signature = NULL;
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UINTN Idx;
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EFI_STATUS Status;
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Status = EfiGetSystemConfigurationTable (&gEfiAcpiTableGuid, (VOID **)&Rsdp);
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if (EFI_ERROR (Status)) {
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Status = EfiGetSystemConfigurationTable (&gEfiAcpi10TableGuid, (VOID **)&Rsdp);
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}
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if (EFI_ERROR (Status) || (Rsdp == NULL)) {
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DEBUG ((DEBUG_ERROR, "EFI_ERROR or Rsdp == NULL\n"));
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return RETURN_NOT_FOUND;
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}
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Rsdt = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN)Rsdp->RsdtAddress;
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Entry32 = (UINT32 *)(UINTN)(Rsdt + 1);
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Entry32Num = (Rsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) >> 2;
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for (Idx = 0; Idx < Entry32Num; Idx++) {
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Signature = (UINT32 *)(UINTN)Entry32[Idx];
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if (*Signature == EFI_ACPI_5_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE) {
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Fadt = (EFI_ACPI_5_0_FIXED_ACPI_DESCRIPTION_TABLE *)Signature;
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DEBUG ((DEBUG_INFO, "Found Fadt in Rsdt\n"));
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goto Done;
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}
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}
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Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *)Rsdp->XsdtAddress;
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Entry32 = (UINT32 *)(Xsdt + 1);
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Entry32Num = (Xsdt->Length - sizeof (EFI_ACPI_DESCRIPTION_HEADER)) >> 2;
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for (Idx = 0; Idx < Entry32Num; Idx++) {
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Signature = (UINT32 *)(UINTN)Entry32[Idx];
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if (*Signature == EFI_ACPI_5_0_FIXED_ACPI_DESCRIPTION_TABLE_SIGNATURE) {
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Fadt = (EFI_ACPI_5_0_FIXED_ACPI_DESCRIPTION_TABLE *)Signature;
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DEBUG ((DEBUG_INFO, "Found Fadt in Xsdt\n"));
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goto Done;
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}
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}
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DEBUG ((DEBUG_ERROR, " Fadt Not Found\n"));
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return RETURN_NOT_FOUND;
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Done:
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mPowerManager.ResetRegAddr = Fadt->ResetReg.Address;
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mPowerManager.ResetValue = Fadt->ResetValue;
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mPowerManager.SleepControlRegAddr = Fadt->SleepControlReg.Address;
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mPowerManager.SleepStatusRegAddr = Fadt->SleepStatusReg.Address;
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return RETURN_SUCCESS;
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}
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/**
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This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE
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event. It converts a pointer to a new virtual address.
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@param[in] Event Event whose notification function is being invoked.
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@param[in] Context Pointer to the notification function's context
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**/
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STATIC
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VOID
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ResetSystemLibAddressChangeEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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EfiConvertPointer (0, (VOID **)&mPowerManager.SleepControlRegAddr);
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EfiConvertPointer (0, (VOID **)&mPowerManager.SleepStatusRegAddr);
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EfiConvertPointer (0, (VOID **)&mPowerManager.ResetRegAddr);
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}
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/**
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Notification function of ACPI Table change.
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This is a notification function registered on ACPI Table change event.
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It saves the Century address stored in ACPI FADT table.
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context.
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**/
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STATIC
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VOID
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AcpiNotificationEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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EFI_STATUS Status;
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Status = GetPowerManagerByParseAcpiInfo ();
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if (EFI_ERROR (Status)) {
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return;
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}
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DEBUG ((DEBUG_INFO, "%a: sleepControl %llx\n", __func__, mPowerManager.SleepControlRegAddr));
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ASSERT (mPowerManager.SleepControlRegAddr);
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Status = SetMemoryAttributesRunTime (mPowerManager.SleepControlRegAddr);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a:%d\n", __func__, __LINE__));
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return;
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}
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DEBUG ((DEBUG_INFO, "%a: sleepStatus %llx\n", __func__, mPowerManager.SleepStatusRegAddr));
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ASSERT (mPowerManager.SleepStatusRegAddr);
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Status = SetMemoryAttributesRunTime (mPowerManager.SleepStatusRegAddr);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a:%d\n", __func__, __LINE__));
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return;
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}
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DEBUG ((DEBUG_INFO, "%a: ResetReg %llx\n", __func__, mPowerManager.ResetRegAddr));
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ASSERT (mPowerManager.ResetRegAddr);
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Status = SetMemoryAttributesRunTime (mPowerManager.ResetRegAddr);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "%a:%d\n", __func__, __LINE__));
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}
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return;
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}
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/**
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The constructor function to Register ACPI Table change event and Address Change Event.
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@retval EFI_SUCCESS The constructor always returns RETURN_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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ResetSystemLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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EFI_EVENT Event;
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EFI_EVENT ResetSystemVirtualNotifyEvent;
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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AcpiNotificationEvent,
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NULL,
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&gEfiAcpiTableGuid,
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&Event
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);
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//
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// Register SetVirtualAddressMap () notify function
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//
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Status = gBS->CreateEvent (
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EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,
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TPL_NOTIFY,
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ResetSystemLibAddressChangeEvent,
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NULL,
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&ResetSystemVirtualNotifyEvent
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);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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