1 files changed, 79 insertions, 0 deletions
diff --git a/PandaBoardPkg/Sec/Cache.c b/PandaBoardPkg/Sec/Cache.c
new file mode 100644
index 000000000..8c85b898c
--- /dev/null
+++ b/PandaBoardPkg/Sec/Cache.c
@@ -0,0 +1,79 @@
+/** @file
+
+  Copyright (c) 2008 - 2009, Apple Inc. 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 <PiPei.h>
+
+#include <Library/ArmLib.h>
+#include <Library/PrePiLib.h>
+#include <Library/PcdLib.h>
+
+// DDR attributes
+#define DDR_ATTRIBUTES_CACHED                ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
+#define DDR_ATTRIBUTES_UNCACHED              ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
+
+// SoC registers. L3 interconnects
+#define SOC_REGISTERS_L3_PHYSICAL_BASE       0x68000000
+#define SOC_REGISTERS_L3_PHYSICAL_LENGTH     0x08000000
+#define SOC_REGISTERS_L3_ATTRIBUTES          ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
+
+// SoC registers. L4 interconnects
+#define SOC_REGISTERS_L4_PHYSICAL_BASE       0x48000000
+#define SOC_REGISTERS_L4_PHYSICAL_LENGTH     0x08000000
+#define SOC_REGISTERS_L4_ATTRIBUTES          ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
+
+VOID
+InitCache (
+  IN  UINT32  MemoryBase,
+  IN  UINT32  MemoryLength
+  )
+{
+  UINT32                        CacheAttributes;
+  ARM_MEMORY_REGION_DESCRIPTOR  MemoryTable[5];
+  VOID                          *TranslationTableBase;
+  UINTN                         TranslationTableSize;
+
+  if (FeaturePcdGet(PcdCacheEnable) == TRUE) {
+    CacheAttributes = DDR_ATTRIBUTES_CACHED;
+  } else {
+    CacheAttributes = DDR_ATTRIBUTES_UNCACHED;
+  }
+
+  // DDR
+  MemoryTable[0].PhysicalBase = MemoryBase;
+  MemoryTable[0].VirtualBase  = MemoryBase;
+  MemoryTable[0].Length       = MemoryLength;
+  MemoryTable[0].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)CacheAttributes;
+
+  // SOC Registers. L3 interconnects
+  MemoryTable[1].PhysicalBase = SOC_REGISTERS_L3_PHYSICAL_BASE;
+  MemoryTable[1].VirtualBase  = SOC_REGISTERS_L3_PHYSICAL_BASE;
+  MemoryTable[1].Length       = SOC_REGISTERS_L3_PHYSICAL_LENGTH;
+  MemoryTable[1].Attributes   = SOC_REGISTERS_L3_ATTRIBUTES;
+  
+  // SOC Registers. L4 interconnects
+  MemoryTable[2].PhysicalBase = SOC_REGISTERS_L4_PHYSICAL_BASE;
+  MemoryTable[2].VirtualBase  = SOC_REGISTERS_L4_PHYSICAL_BASE;
+  MemoryTable[2].Length       = SOC_REGISTERS_L4_PHYSICAL_LENGTH;
+  MemoryTable[2].Attributes   = SOC_REGISTERS_L4_ATTRIBUTES;
+
+  // End of Table
+  MemoryTable[3].PhysicalBase = 0;
+  MemoryTable[3].VirtualBase  = 0;
+  MemoryTable[3].Length       = 0;
+  MemoryTable[3].Attributes   = (ARM_MEMORY_REGION_ATTRIBUTES)0;
+  
+  ArmConfigureMmu (MemoryTable, &TranslationTableBase, &TranslationTableSize);
+  
+  BuildMemoryAllocationHob((EFI_PHYSICAL_ADDRESS)(UINTN)TranslationTableBase, TranslationTableSize, EfiBootServicesData);
+}