Fix EBL GetCurrentIpAddress & GetCurrentMacAddress commands. Add variable services commands. Fix arugment parsing in EBL. All fixes from ARM Ltd.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11290 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 192 insertions, 0 deletions

diff --git a/EmbeddedPkg/Ebl/Variable.c b/EmbeddedPkg/Ebl/Variable.c
new file mode 100644
index 0000000000..330a143375
--- /dev/null
+++ b/EmbeddedPkg/Ebl/Variable.c
@@ -0,0 +1,192 @@
+/** @file
+*
+*  Copyright (c) 2011, ARM Limited. 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 "Ebl.h"

+
+#include <Guid/GlobalVariable.h>
+

+EFI_STATUS

+EblGetCmd (

+  IN UINTN  Argc,

+  IN CHAR8  **Argv

+  )

+{

+  EFI_STATUS        Status = EFI_INVALID_PARAMETER;

+  UINTN       Size;
+  VOID*       Value;
+  CHAR8*      AsciiVariableName = NULL;
+  CHAR16*     VariableName;
+  UINT32      Index;
+
+  if (Argc == 1) {
+    AsciiPrint("Variable name is missing.\n");
+    return Status;
+  }
+
+  for (Index = 1; Index < Argc; Index++) {
+    if (Argv[Index][0] == '-') {
+      AsciiPrint("Warning: '%a' not recognized.\n",Argv[Index]);
+    } else {
+      AsciiVariableName = Argv[Index];
+    }
+  }
+
+  if (AsciiVariableName == NULL) {
+    AsciiPrint("Variable name is missing.\n");
+    return Status;
+  } else {
+    VariableName = AllocatePool((AsciiStrLen (AsciiVariableName) + 1) * sizeof (CHAR16));
+    AsciiStrToUnicodeStr (AsciiVariableName,VariableName);
+  }
+
+  // Try to get the variable size.
+  Value = NULL;
+  Size = 0;
+  Status = gRT->GetVariable (VariableName, &gEfiGlobalVariableGuid, NULL, &Size, Value);
+  if (Status == EFI_NOT_FOUND) {
+    AsciiPrint("Variable name '%a' not found.\n",VariableName);
+  } else if (Status == EFI_BUFFER_TOO_SMALL) {
+    // Get the environment variable value
+    Value = AllocatePool (Size);
+    if (Value == NULL) {
+      return EFI_OUT_OF_RESOURCES;
+    }
+
+    Status = gRT->GetVariable ((CHAR16 *)VariableName, &gEfiGlobalVariableGuid, NULL, &Size, Value);
+    if (EFI_ERROR (Status)) {
+      AsciiPrint("Error: '%r'\n",Status);
+    } else {
+      AsciiPrint("%a=%a\n",AsciiVariableName,Value);
+    }
+    FreePool(Value);
+  } else {
+    AsciiPrint("Error: '%r'\n",Status);
+  }

+

+  FreePool(VariableName);

+  return Status;

+}

+

+EFI_STATUS

+EblSetCmd (

+  IN UINTN  Argc,

+  IN CHAR8  **Argv

+  )

+{

+  EFI_STATUS    Status = EFI_INVALID_PARAMETER;

+  CHAR8*        AsciiVariableSetting = NULL;
+  CHAR8*        AsciiVariableName;
+  CHAR8*        AsciiValue;
+  UINT32        AsciiValueLength;
+  CHAR16*       VariableName;
+  UINT32        Index;

+  UINT32        EscapedQuotes = 0;

+  BOOLEAN       Volatile = FALSE;

+

+  if (Argc == 1) {
+    AsciiPrint("Variable name is missing.\n");
+    return Status;
+  }
+
+  for (Index = 1; Index < Argc; Index++) {
+    if (AsciiStrCmp(Argv[Index],"-v") == 0) {
+      Volatile = 0;
+    } else if (Argv[Index][0] == '-') {
+      AsciiPrint("Warning: '%a' not recognized.\n",Argv[Index]);
+    } else {
+      AsciiVariableSetting = Argv[Index];
+    }
+  }
+
+  if (AsciiVariableSetting == NULL) {
+    AsciiPrint("Variable name is missing.\n");
+    return Status;
+  }
+  
+  // Check if it is a valid variable setting
+  AsciiValue = AsciiStrStr (AsciiVariableSetting,"=");

+  if (AsciiValue == NULL) {
+    AsciiPrint("Variable setting is incorrect. It should be VariableName=Value\n");
+    return Status;
+  }

+

+  AsciiValue[0] = '\0';

+  AsciiVariableName = AsciiVariableSetting;

+  AsciiValue++;

+

+  // Clean AsciiValue from quote

+  if (AsciiValue[0] == '"') {

+    AsciiValue++;

+  }

+  AsciiValueLength = AsciiStrLen (AsciiValue);

+  if ((AsciiValue[AsciiValueLength-2] != '\\') && (AsciiValue[AsciiValueLength-1] == '"')) {

+    AsciiValue[AsciiValueLength-1] = '\0';

+  }

+

+  // Clean AsciiValue from escaped quotes

+  for (Index = 0; Index < AsciiValueLength; Index++) {

+    if ((Index > 0) && (AsciiValue[Index-1] == '\\') && (AsciiValue[Index] == '"')) {

+      EscapedQuotes++;

+    }

+    AsciiValue[Index-EscapedQuotes] = AsciiValue[Index];

+  }

+  // Fill the end of the value with '\0'

+  for (Index = 0; Index < EscapedQuotes; Index++) {

+    AsciiValue[AsciiValueLength-1-Index] = '\0';

+  }

+

+  // Convert VariableName into Unicode

+  VariableName = AllocatePool((AsciiStrLen (AsciiVariableName) + 1) * sizeof (CHAR16));
+  AsciiStrToUnicodeStr (AsciiVariableName,VariableName);

+

+  Status = gRT->SetVariable (
+                      VariableName,
+                      &gEfiGlobalVariableGuid,
+                      ( !Volatile ? EFI_VARIABLE_NON_VOLATILE : 0) |
+                      EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+                      AsciiStrLen (AsciiValue)+1,
+                      AsciiValue
+                      );

+

+  AsciiPrint("'%a'='%a'\n",AsciiVariableName,AsciiValue);

+

+  return Status;

+}

+

+GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdVariableTemplate[] =

+{

+  {

+    "get",

+    " ; get UEFI variable\n\r   [v]; verbose",

+    NULL,

+    EblGetCmd

+  },

+  {

+    "set",

+    " ; set UEFI variable\n\r   [v]; create volatile variable",

+    NULL,

+    EblSetCmd

+  }

+};

+

+/**

+  Initialize the commands in this in this file

+**/

+VOID

+EblInitializeVariableCmds (

+  VOID

+  )

+{

+  EblAddCommands (mCmdVariableTemplate, sizeof (mCmdVariableTemplate)/sizeof (EBL_COMMAND_TABLE));

+}