Adding support for BeagleBoard.

[mirror_edk2.git] / ArmPkg / Library / ArmLib / Arm11 / Arm11Lib.c

diff --git a/ArmPkg/Library/ArmLib/Arm11/Arm11Lib.c b/ArmPkg/Library/ArmLib/Arm11/Arm11Lib.c
new file mode 100644 (file)
index 0000000..3736904
--- /dev/null
+++ b/ArmPkg/Library/ArmLib/Arm11/Arm11Lib.c
@@ -0,0 +1,118 @@
+/** @file
+
+  Copyright (c) 2008-2009, Apple Inc. All rights reserved.
+  
+  All rights reserved. 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 <Chipset/ARM1176JZ-S.h>
+#include <Library/ArmLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+VOID
+FillTranslationTable (
+  IN  UINT32                        *TranslationTable,
+  IN  ARM_MEMORY_REGION_DESCRIPTOR  *MemoryRegion
+  )
+{
+  UINT32  *Entry;
+  UINTN   Sections;
+  UINTN   Index;
+  UINT32  Attributes;
+  UINT32  PhysicalBase = MemoryRegion->PhysicalBase;
+  
+  switch (MemoryRegion->Attributes) {
+    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK:
+      Attributes = TT_DESCRIPTOR_SECTION_WRITE_BACK;
+      break;
+    case ARM_MEMORY_REGION_ATTRIBUTE_WRITE_THROUGH:
+      Attributes = TT_DESCRIPTOR_SECTION_WRITE_THROUGH;
+      break;
+    case ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED:
+    default:
+      Attributes = TT_DESCRIPTOR_SECTION_UNCACHED;
+      break;
+  }
+  
+  Entry    = TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(TranslationTable, MemoryRegion->VirtualBase);
+  Sections = ((( MemoryRegion->Length - 1 ) / TT_DESCRIPTOR_SECTION_SIZE ) + 1 );
+  
+  for (Index = 0; Index < Sections; Index++)
+  {
+    *Entry++     =  TT_DESCRIPTOR_SECTION_BASE_ADDRESS(PhysicalBase) | Attributes;
+    PhysicalBase += TT_DESCRIPTOR_SECTION_SIZE;
+  }
+}
+
+VOID
+EFIAPI
+ArmConfigureMmu (
+  IN  ARM_MEMORY_REGION_DESCRIPTOR  *MemoryTable,
+  OUT VOID                          **TranslationTableBase OPTIONAL,
+  OUT UINTN                         *TranslationTableSize  OPTIONAL
+  )
+{
+  VOID  *TranslationTable;
+
+  // Allocate pages for translation table.
+  TranslationTable = AllocatePages(EFI_SIZE_TO_PAGES(TRANSLATION_TABLE_SIZE + TRANSLATION_TABLE_ALIGNMENT));
+  TranslationTable = (VOID *)(((UINTN)TranslationTable + TRANSLATION_TABLE_ALIGNMENT_MASK) & ~TRANSLATION_TABLE_ALIGNMENT_MASK);
+
+  if (TranslationTableBase != NULL) {
+    *TranslationTableBase = TranslationTable;
+  }
+  
+  if (TranslationTableBase != NULL) {
+    *TranslationTableSize = TRANSLATION_TABLE_SIZE;
+  }
+
+  ZeroMem(TranslationTable, TRANSLATION_TABLE_SIZE);
+
+  ArmCleanInvalidateDataCache();
+  ArmInvalidateInstructionCache();
+  ArmInvalidateTlb();
+
+  ArmDisableDataCache();
+  ArmDisableInstructionCache();
+  ArmDisableMmu();
+
+  // Make sure nothing sneaked into the cache
+  ArmCleanInvalidateDataCache();
+  ArmInvalidateInstructionCache();
+
+  while (MemoryTable->Length != 0) {
+    FillTranslationTable(TranslationTable, MemoryTable);
+    MemoryTable++;
+  }
+
+  ArmSetTranslationTableBaseAddress(TranslationTable);
+    
+  ArmSetDomainAccessControl(DOMAIN_ACCESS_CONTROL_NONE(15) |
+                            DOMAIN_ACCESS_CONTROL_NONE(14) |
+                            DOMAIN_ACCESS_CONTROL_NONE(13) |
+                            DOMAIN_ACCESS_CONTROL_NONE(12) |
+                            DOMAIN_ACCESS_CONTROL_NONE(11) |
+                            DOMAIN_ACCESS_CONTROL_NONE(10) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 9) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 8) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 7) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 6) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 5) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 4) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 3) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 2) |
+                            DOMAIN_ACCESS_CONTROL_NONE( 1) |
+                            DOMAIN_ACCESS_CONTROL_MANAGER(0));
+    
+  ArmEnableInstructionCache();
+  ArmEnableDataCache();
+  ArmEnableMmu();  
+}