1 files changed, 165 insertions, 0 deletions
diff --git a/PandaBoardPkg/Library/ResetSystemLib/ResetSystemLib.c b/PandaBoardPkg/Library/ResetSystemLib/ResetSystemLib.c
new file mode 100644
index 000000000..fa0877a5e
--- /dev/null
+++ b/PandaBoardPkg/Library/ResetSystemLib/ResetSystemLib.c
@@ -0,0 +1,165 @@
+/** @file
+  Do a generic Cold Reset for PandaBoard specific Warm reset
+  
+  Copyright (c) 2008 - 2010, 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 <Uefi.h>
+
+#include <Library/ArmLib.h>
+#include <Library/CacheMaintenanceLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/IoLib.h>
+#include <Library/PcdLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include <Omap4430/Omap4430.h>
+
+
+VOID
+ShutdownEfi (
+  VOID
+  )
+{
+  EFI_STATUS              Status;
+  UINTN                   MemoryMapSize;
+  EFI_MEMORY_DESCRIPTOR   *MemoryMap;
+  UINTN                   MapKey;
+  UINTN                   DescriptorSize;
+  UINTN                   DescriptorVersion;
+  UINTN                   Pages;
+
+  MemoryMap = NULL;
+  MemoryMapSize = 0;
+  do {
+    Status = gBS->GetMemoryMap (
+                    &MemoryMapSize,
+                    MemoryMap,
+                    &MapKey,
+                    &DescriptorSize,
+                    &DescriptorVersion
+                    );
+    if (Status == EFI_BUFFER_TOO_SMALL) {
+
+      Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
+      MemoryMap = AllocatePages (Pages);
+    
+      //
+      // Get System MemoryMap
+      //
+      Status = gBS->GetMemoryMap (
+                      &MemoryMapSize,
+                      MemoryMap,
+                      &MapKey,
+                      &DescriptorSize,
+                      &DescriptorVersion
+                      );
+      // Don't do anything between the GetMemoryMap() and ExitBootServices()
+      if (!EFI_ERROR (Status)) {
+        Status = gBS->ExitBootServices (gImageHandle, MapKey);
+        if (EFI_ERROR (Status)) {
+          FreePages (MemoryMap, Pages);
+          MemoryMap = NULL;
+          MemoryMapSize = 0;
+        }
+      }
+    }
+  } while (EFI_ERROR (Status));
+
+  //Clean and invalidate caches.
+  WriteBackInvalidateDataCache();
+  InvalidateInstructionCache();
+
+  //Turning off Caches and MMU
+  ArmDisableDataCache ();
+  ArmDisableInstructionCache ();
+  ArmDisableMmu ();
+}
+
+typedef
+VOID
+(EFIAPI *CALL_STUB)(
+  VOID
+);
+
+
+/**
+  Resets the entire platform.
+
+  @param  ResetType             The type of reset to perform.
+  @param  ResetStatus           The status code for the reset.
+  @param  DataSize              The size, in bytes, of WatchdogData.
+  @param  ResetData             For a ResetType of EfiResetCold, EfiResetWarm, or
+                                EfiResetShutdown the data buffer starts with a Null-terminated
+                                Unicode string, optionally followed by additional binary data.
+
+**/
+EFI_STATUS
+EFIAPI
+LibResetSystem (
+  IN EFI_RESET_TYPE   ResetType,
+  IN EFI_STATUS       ResetStatus,
+  IN UINTN            DataSize,
+  IN CHAR16           *ResetData OPTIONAL
+  )
+{
+  CALL_STUB   StartOfFv;
+
+  if (ResetData != NULL) {
+    DEBUG((EFI_D_ERROR, "%s", ResetData));
+  }
+
+  ShutdownEfi ();
+
+  switch (ResetType) {
+  case EfiResetWarm:
+    //Perform warm reset of the system by jumping to the begining of the FV
+    StartOfFv = (CALL_STUB)(UINTN)PcdGet32(PcdFvBaseAddress);
+    StartOfFv ();
+    break;
+  case EfiResetCold:
+  case EfiResetShutdown:
+  default:
+    //Perform cold reset of the system.
+    MmioOr32 (PRM_RSTCTRL, PRM_RSTCTRL_RST_GLOBAL_COLD_SW_VAL);
+    while ((MmioRead32(PRM_RSTST) & PRM_RSTST_GLOBAL_COLD_RST_MASK) != 0x1);
+    break;
+  }
+
+  // If the reset didn't work, return an error.
+  ASSERT (FALSE);
+  return EFI_DEVICE_ERROR;
+}
+  
+
+
+/**
+  Initialize any infrastructure required for LibResetSystem () to function.
+
+  @param  ImageHandle   The firmware allocated handle for the EFI image.
+  @param  SystemTable   A pointer to the EFI System Table.
+  
+  @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+LibInitializeResetSystem (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  return EFI_SUCCESS;
+}
+