diff options
Diffstat (limited to 'MdeModulePkg/Universal/PropertiesTableAttributesDxe/PropertiesTableAttributesDxe.c')
| -rw-r--r-- | MdeModulePkg/Universal/PropertiesTableAttributesDxe/PropertiesTableAttributesDxe.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/MdeModulePkg/Universal/PropertiesTableAttributesDxe/PropertiesTableAttributesDxe.c b/MdeModulePkg/Universal/PropertiesTableAttributesDxe/PropertiesTableAttributesDxe.c deleted file mode 100644 index 4d1a46f64c..0000000000 --- a/MdeModulePkg/Universal/PropertiesTableAttributesDxe/PropertiesTableAttributesDxe.c +++ /dev/null @@ -1,208 +0,0 @@ -/** @file
- This module sets default policy for attributes of EfiACPIMemoryNVS and EfiReservedMemoryType.
-
- This module sets EFI_MEMORY_XP for attributes of EfiACPIMemoryNVS and EfiReservedMemoryType
- in UEFI memory map, if and only of PropertiesTable is published and has BIT0 set.
-
-Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include <Uefi.h>
-#include <Library/DebugLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/DxeServicesTableLib.h>
-#include <Library/UefiLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Guid/EventGroup.h>
-#include <Guid/PropertiesTable.h>
-
-/**
- Converts a number of EFI_PAGEs to a size in bytes.
-
- NOTE: Do not use EFI_PAGES_TO_SIZE because it handles UINTN only.
-
- @param Pages The number of EFI_PAGES.
-
- @return The number of bytes associated with the number of EFI_PAGEs specified
- by Pages.
-**/
-UINT64
-EfiPagesToSize (
- IN UINT64 Pages
- )
-{
- return LShiftU64 (Pages, EFI_PAGE_SHIFT);
-}
-
-/**
- Set memory attributes according to default policy.
-
- @param MemoryMap A pointer to the buffer in which firmware places the current memory map.
- @param MemoryMapSize Size, in bytes, of the MemoryMap buffer.
- @param DescriptorSize size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
-**/
-VOID
-SetMemorySpaceAttributesDefault (
- IN EFI_MEMORY_DESCRIPTOR *MemoryMap,
- IN UINTN MemoryMapSize,
- IN UINTN DescriptorSize
- )
-{
- EFI_MEMORY_DESCRIPTOR *MemoryMapEntry;
- EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;
- EFI_STATUS Status;
-
- DEBUG ((EFI_D_INFO, "SetMemorySpaceAttributesDefault\n"));
-
- MemoryMapEntry = MemoryMap;
- MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) MemoryMap + MemoryMapSize);
- while ((UINTN)MemoryMapEntry < (UINTN)MemoryMapEnd) {
- if (MemoryMapEntry->PhysicalStart < BASE_1MB) {
- //
- // Do not touch memory space below 1MB
- //
- MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
- continue;
- }
- switch (MemoryMapEntry->Type) {
- case EfiRuntimeServicesCode:
- case EfiRuntimeServicesData:
- //
- // should be handled later;
- //
- break;
- case EfiReservedMemoryType:
- case EfiACPIMemoryNVS:
- //
- // Handle EfiReservedMemoryType and EfiACPIMemoryNVS, because there might be firmware executable there.
- //
- DEBUG ((EFI_D_INFO, "SetMemorySpaceAttributes - %016lx - %016lx (%016lx) ...\n",
- MemoryMapEntry->PhysicalStart,
- MemoryMapEntry->PhysicalStart + EfiPagesToSize (MemoryMapEntry->NumberOfPages),
- MemoryMapEntry->Attribute
- ));
- Status = gDS->SetMemorySpaceCapabilities (
- MemoryMapEntry->PhysicalStart,
- EfiPagesToSize (MemoryMapEntry->NumberOfPages),
- MemoryMapEntry->Attribute | EFI_MEMORY_XP
- );
- DEBUG ((EFI_D_INFO, "SetMemorySpaceCapabilities - %r\n", Status));
- break;
- }
-
- MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
- }
-
- return ;
-}
-
-/**
- Update memory attributes according to default policy.
-
- @param[in] Event The Event this notify function registered to.
- @param[in] Context Pointer to the context data registered to the Event.
-**/
-VOID
-EFIAPI
-UpdateMemoryAttributesDefault (
- EFI_EVENT Event,
- VOID *Context
- )
-{
- EFI_STATUS Status;
- EFI_MEMORY_DESCRIPTOR *MemoryMap;
- UINTN MemoryMapSize;
- UINTN MapKey;
- UINTN DescriptorSize;
- UINT32 DescriptorVersion;
- EFI_PROPERTIES_TABLE *PropertiesTable;
-
- DEBUG ((EFI_D_INFO, "UpdateMemoryAttributesDefault\n"));
- Status = EfiGetSystemConfigurationTable (&gEfiPropertiesTableGuid, (VOID **) &PropertiesTable);
- if (EFI_ERROR (Status)) {
- goto Done;
- }
-
- ASSERT (PropertiesTable != NULL);
-
- DEBUG ((EFI_D_INFO, "MemoryProtectionAttribute - 0x%016lx\n", PropertiesTable->MemoryProtectionAttribute));
- if ((PropertiesTable->MemoryProtectionAttribute & EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) == 0) {
- goto Done;
- }
-
- //
- // Get the EFI memory map.
- //
- MemoryMapSize = 0;
- MemoryMap = NULL;
- Status = gBS->GetMemoryMap (
- &MemoryMapSize,
- MemoryMap,
- &MapKey,
- &DescriptorSize,
- &DescriptorVersion
- );
- ASSERT (Status == EFI_BUFFER_TOO_SMALL);
- do {
- MemoryMap = (EFI_MEMORY_DESCRIPTOR *) AllocatePool (MemoryMapSize);
- ASSERT (MemoryMap != NULL);
- Status = gBS->GetMemoryMap (
- &MemoryMapSize,
- MemoryMap,
- &MapKey,
- &DescriptorSize,
- &DescriptorVersion
- );
- if (EFI_ERROR (Status)) {
- FreePool (MemoryMap);
- }
- } while (Status == EFI_BUFFER_TOO_SMALL);
- ASSERT_EFI_ERROR (Status);
-
- SetMemorySpaceAttributesDefault (MemoryMap, MemoryMapSize, DescriptorSize);
-
-Done:
- gBS->CloseEvent (Event);
-
- return ;
-}
-
-/**
- The entrypoint of properties table attribute driver.
-
- @param ImageHandle The firmware allocated handle for the EFI image.
- @param SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS It always returns EFI_SUCCESS.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializePropertiesTableAttributesDxe (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
- EFI_EVENT ReadyToBootEvent;
-
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- UpdateMemoryAttributesDefault,
- NULL,
- &gEfiEventReadyToBootGuid,
- &ReadyToBootEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- return EFI_SUCCESS;
-}
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