--- /dev/null
+/** @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.
+*
+**/
+\r
+#include "Ebl.h"\r
+
+#include <Guid/GlobalVariable.h>
+\r
+EFI_STATUS\r
+EblGetCmd (\r
+ IN UINTN Argc,\r
+ IN CHAR8 **Argv\r
+ )\r
+{\r
+ EFI_STATUS Status = EFI_INVALID_PARAMETER;\r
+ 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);
+ }\r
+\r
+ FreePool(VariableName);\r
+ return Status;\r
+}\r
+\r
+EFI_STATUS\r
+EblSetCmd (\r
+ IN UINTN Argc,\r
+ IN CHAR8 **Argv\r
+ )\r
+{\r
+ EFI_STATUS Status = EFI_INVALID_PARAMETER;\r
+ CHAR8* AsciiVariableSetting = NULL;
+ CHAR8* AsciiVariableName;
+ CHAR8* AsciiValue;
+ UINT32 AsciiValueLength;
+ CHAR16* VariableName;
+ UINT32 Index;\r
+ UINT32 EscapedQuotes = 0;\r
+ BOOLEAN Volatile = FALSE;\r
+\r
+ 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,"=");\r
+ if (AsciiValue == NULL) {
+ AsciiPrint("Variable setting is incorrect. It should be VariableName=Value\n");
+ return Status;
+ }\r
+\r
+ AsciiValue[0] = '\0';\r
+ AsciiVariableName = AsciiVariableSetting;\r
+ AsciiValue++;\r
+\r
+ // Clean AsciiValue from quote\r
+ if (AsciiValue[0] == '"') {\r
+ AsciiValue++;\r
+ }\r
+ AsciiValueLength = AsciiStrLen (AsciiValue);\r
+ if ((AsciiValue[AsciiValueLength-2] != '\\') && (AsciiValue[AsciiValueLength-1] == '"')) {\r
+ AsciiValue[AsciiValueLength-1] = '\0';\r
+ }\r
+\r
+ // Clean AsciiValue from escaped quotes\r
+ for (Index = 0; Index < AsciiValueLength; Index++) {\r
+ if ((Index > 0) && (AsciiValue[Index-1] == '\\') && (AsciiValue[Index] == '"')) {\r
+ EscapedQuotes++;\r
+ }\r
+ AsciiValue[Index-EscapedQuotes] = AsciiValue[Index];\r
+ }\r
+ // Fill the end of the value with '\0'\r
+ for (Index = 0; Index < EscapedQuotes; Index++) {\r
+ AsciiValue[AsciiValueLength-1-Index] = '\0';\r
+ }\r
+\r
+ // Convert VariableName into Unicode\r
+ VariableName = AllocatePool((AsciiStrLen (AsciiVariableName) + 1) * sizeof (CHAR16));
+ AsciiStrToUnicodeStr (AsciiVariableName,VariableName);\r
+\r
+ Status = gRT->SetVariable (
+ VariableName,
+ &gEfiGlobalVariableGuid,
+ ( !Volatile ? EFI_VARIABLE_NON_VOLATILE : 0) |
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+ AsciiStrLen (AsciiValue)+1,
+ AsciiValue
+ );\r
+\r
+ AsciiPrint("'%a'='%a'\n",AsciiVariableName,AsciiValue);\r
+\r
+ return Status;\r
+}\r
+\r
+GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdVariableTemplate[] =\r
+{\r
+ {\r
+ "get",\r
+ " ; get UEFI variable\n\r [v]; verbose",\r
+ NULL,\r
+ EblGetCmd\r
+ },\r
+ {\r
+ "set",\r
+ " ; set UEFI variable\n\r [v]; create volatile variable",\r
+ NULL,\r
+ EblSetCmd\r
+ }\r
+};\r
+\r
+/**\r
+ Initialize the commands in this in this file\r
+**/\r
+VOID\r
+EblInitializeVariableCmds (\r
+ VOID\r
+ )\r
+{\r
+ EblAddCommands (mCmdVariableTemplate, sizeof (mCmdVariableTemplate)/sizeof (EBL_COMMAND_TABLE));\r
+}\r
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