ArmVirtPkg/HighMemDxe: Relocate HighMemDxe to OvmfPkg

[mirror_edk2.git] / ArmVirtPkg / HighMemDxe / HighMemDxe.c

diff --git a/ArmVirtPkg/HighMemDxe/HighMemDxe.c b/ArmVirtPkg/HighMemDxe/HighMemDxe.c
deleted file mode 100644 (file)
index c383757..0000000
--- a/ArmVirtPkg/HighMemDxe/HighMemDxe.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/** @file\r
-*  High memory node enumeration DXE driver for ARM Virtual Machines\r
-*\r
-*  Copyright (c) 2015-2016, Linaro Ltd. All rights reserved.\r
-*\r
-*  SPDX-License-Identifier: BSD-2-Clause-Patent\r
-*\r
-**/\r
-\r
-#include <Library/BaseLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/DxeServicesTableLib.h>\r
-#include <Library/PcdLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
-\r
-#include <Protocol/Cpu.h>\r
-#include <Protocol/FdtClient.h>\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-InitializeHighMemDxe (\r
-  IN EFI_HANDLE           ImageHandle,\r
-  IN EFI_SYSTEM_TABLE     *SystemTable\r
-  )\r
-{\r
-  FDT_CLIENT_PROTOCOL               *FdtClient;\r
-  EFI_CPU_ARCH_PROTOCOL             *Cpu;\r
-  EFI_STATUS                        Status, FindNodeStatus;\r
-  INT32                             Node;\r
-  CONST UINT32                      *Reg;\r
-  UINT32                            RegSize;\r
-  UINTN                             AddressCells, SizeCells;\r
-  UINT64                            CurBase;\r
-  UINT64                            CurSize;\r
-  UINT64                            Attributes;\r
-  EFI_GCD_MEMORY_SPACE_DESCRIPTOR   GcdDescriptor;\r
-\r
-  Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,\r
-                  (VOID **)&FdtClient);\r
-  ASSERT_EFI_ERROR (Status);\r
-\r
-  Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL,\r
-                  (VOID **)&Cpu);\r
-  ASSERT_EFI_ERROR (Status);\r
-\r
-  //\r
-  // Check for memory node and add the memory spaces except the lowest one\r
-  //\r
-  for (FindNodeStatus = FdtClient->FindMemoryNodeReg (FdtClient, &Node,\r
-                                     (CONST VOID **) &Reg, &AddressCells,\r
-                                     &SizeCells, &RegSize);\r
-       !EFI_ERROR (FindNodeStatus);\r
-       FindNodeStatus = FdtClient->FindNextMemoryNodeReg (FdtClient, Node,\r
-                                     &Node, (CONST VOID **) &Reg, &AddressCells,\r
-                                     &SizeCells, &RegSize)) {\r
-    ASSERT (AddressCells <= 2);\r
-    ASSERT (SizeCells <= 2);\r
-\r
-    while (RegSize > 0) {\r
-      CurBase = SwapBytes32 (*Reg++);\r
-      if (AddressCells > 1) {\r
-        CurBase = (CurBase << 32) | SwapBytes32 (*Reg++);\r
-      }\r
-      CurSize = SwapBytes32 (*Reg++);\r
-      if (SizeCells > 1) {\r
-        CurSize = (CurSize << 32) | SwapBytes32 (*Reg++);\r
-      }\r
-      RegSize -= (AddressCells + SizeCells) * sizeof (UINT32);\r
-\r
-      Status = gDS->GetMemorySpaceDescriptor (CurBase, &GcdDescriptor);\r
-      if (EFI_ERROR (Status)) {\r
-        DEBUG ((DEBUG_WARN,\r
-          "%a: Region 0x%lx - 0x%lx not found in the GCD memory space map\n",\r
-          __FUNCTION__, CurBase, CurBase + CurSize - 1));\r
-          continue;\r
-      }\r
-      if (GcdDescriptor.GcdMemoryType == EfiGcdMemoryTypeNonExistent) {\r
-        Status = gDS->AddMemorySpace (EfiGcdMemoryTypeSystemMemory, CurBase,\r
-                        CurSize, EFI_MEMORY_WB);\r
-\r
-        if (EFI_ERROR (Status)) {\r
-          DEBUG ((EFI_D_ERROR,\r
-            "%a: Failed to add System RAM @ 0x%lx - 0x%lx (%r)\n",\r
-            __FUNCTION__, CurBase, CurBase + CurSize - 1, Status));\r
-          continue;\r
-        }\r
-\r
-        Status = gDS->SetMemorySpaceAttributes (CurBase, CurSize,\r
-                        EFI_MEMORY_WB);\r
-        if (EFI_ERROR (Status)) {\r
-          DEBUG ((DEBUG_WARN,\r
-            "%a: gDS->SetMemorySpaceAttributes() failed on region 0x%lx - 0x%lx (%r)\n",\r
-            __FUNCTION__, CurBase, CurBase + CurSize - 1, Status));\r
-        }\r
-\r
-        //\r
-        // Due to the ambiguous nature of the RO/XP GCD memory space attributes,\r
-        // it is impossible to add a memory space with the XP attribute in a way\r
-        // that does not result in the XP attribute being set on *all* UEFI\r
-        // memory map entries that are carved from it, including code regions\r
-        // that require executable permissions.\r
-        //\r
-        // So instead, we never set the RO/XP attributes in the GCD memory space\r
-        // capabilities or attribute fields, and apply any protections directly\r
-        // on the page table mappings by going through the cpu arch protocol.\r
-        //\r
-        Attributes = EFI_MEMORY_WB;\r
-        if ((PcdGet64 (PcdDxeNxMemoryProtectionPolicy) &\r
-             (1U << (UINT32)EfiConventionalMemory)) != 0) {\r
-          Attributes |= EFI_MEMORY_XP;\r
-        }\r
-\r
-        Status = Cpu->SetMemoryAttributes (Cpu, CurBase, CurSize, Attributes);\r
-\r
-        if (EFI_ERROR (Status)) {\r
-          DEBUG ((EFI_D_ERROR,\r
-            "%a: Failed to set System RAM @ 0x%lx - 0x%lx attribute (%r)\n",\r
-            __FUNCTION__, CurBase, CurBase + CurSize - 1, Status));\r
-        } else {\r
-          DEBUG ((EFI_D_INFO, "%a: Add System RAM @ 0x%lx - 0x%lx\n",\r
-            __FUNCTION__, CurBase, CurBase + CurSize - 1));\r
-        }\r
-      }\r
-    }\r
-  }\r
-\r
-  return EFI_SUCCESS;\r
-}\r