From 5b84091f3bd33ef0ec0e9c365e6a7cd516d4c2c9 Mon Sep 17 00:00:00 2001
From: niruiyu <niruiyu@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Tue, 29 Mar 2011 08:24:21 +0000
Subject: [PATCH] Add DevicePathFromText support for ACPI _ADR node.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11445 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../DevicePathDxe/DevicePathFromText.c        | 48 ++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Universal/DevicePathDxe/DevicePathFromText.c b/MdeModulePkg/Universal/DevicePathDxe/DevicePathFromText.c
index 162b0e9ef4..00f44f803c 100644
--- a/MdeModulePkg/Universal/DevicePathDxe/DevicePathFromText.c
+++ b/MdeModulePkg/Universal/DevicePathDxe/DevicePathFromText.c
@@ -1,7 +1,7 @@
 /** @file
   DevicePathFromText protocol as defined in the UEFI 2.0 specification.
 
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2011, 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
@@ -1137,6 +1137,51 @@ DevPathFromTextAcpiExp (
   return (EFI_DEVICE_PATH_PROTOCOL *) AcpiEx;
 }
 
+/**
+  Converts a text device path node to ACPI _ADR device path structure.
+
+  @param TextDeviceNode  The input Text device path node.
+
+  @return A pointer to the newly-created ACPI _ADR device path structure.
+
+**/
+EFI_DEVICE_PATH_PROTOCOL *
+DevPathFromTextAcpiAdr (
+  IN CHAR16 *TextDeviceNode
+  )
+{
+  CHAR16                *DisplayDeviceStr;
+  ACPI_ADR_DEVICE_PATH  *AcpiAdr;
+  UINTN                 Index;
+
+  AcpiAdr = (ACPI_ADR_DEVICE_PATH *) CreateDeviceNode (
+                                       ACPI_DEVICE_PATH,
+                                       ACPI_ADR_DP,
+                                       sizeof (ACPI_ADR_DEVICE_PATH)
+                                       );
+  ASSERT (AcpiAdr != NULL);
+
+  for (Index = 0; ; Index++) {
+    DisplayDeviceStr = GetNextParamStr (&TextDeviceNode);
+    if (IS_NULL (*DisplayDeviceStr)) {
+      break;
+    }
+    if (Index > 0) {
+      AcpiAdr = ReallocatePool (
+                  DevicePathNodeLength (AcpiAdr),
+                  DevicePathNodeLength (AcpiAdr) + sizeof (UINT32),
+                  AcpiAdr
+                  );
+      ASSERT (AcpiAdr != NULL);
+      SetDevicePathNodeLength (AcpiAdr, DevicePathNodeLength (AcpiAdr) + sizeof (UINT32));
+    }
+    
+    (&AcpiAdr->ADR)[Index] = (UINT32) Strtoi (DisplayDeviceStr);
+  }
+
+  return (EFI_DEVICE_PATH_PROTOCOL *) AcpiAdr;
+}
+
 /**
   Converts a text device path node to Parallel Port device path structure.
 
@@ -2769,6 +2814,7 @@ GLOBAL_REMOVE_IF_UNREFERENCED DEVICE_PATH_FROM_TEXT_TABLE DevPathFromTextTable[]
   {L"ParallelPort", DevPathFromTextParallelPort},
   {L"AcpiEx", DevPathFromTextAcpiEx},
   {L"AcpiExp", DevPathFromTextAcpiExp},
+  {L"AcpiAdr", DevPathFromTextAcpiAdr},
   {L"Ata", DevPathFromTextAta},
   {L"Scsi", DevPathFromTextScsi},
   {L"Fibre", DevPathFromTextFibre},