1 files changed, 142 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/AmlToC/AmlToC.py b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/AmlToC/AmlToC.py
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+++ b/src/VBox/Devices/EFI/Firmware/BaseTools/Source/Python/AmlToC/AmlToC.py
@@ -0,0 +1,142 @@
+## @file
+#
+# Convert an AML file to a .c file containing the AML bytecode stored in a
+# C array.
+# By default, "Tables\Dsdt.aml" will generate "Tables\Dsdt.c".
+# "Tables\Dsdt.c" will contain a C array named "dsdt_aml_code" that contains
+# the AML bytecode.
+#
+# Copyright (c) 2020, ARM Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+
+import argparse
+import Common.EdkLogger as EdkLogger
+from Common.BuildToolError import *
+import sys
+import os
+
+__description__ = """
+Convert an AML file to a .c file containing the AML bytecode stored in a C
+array. By default, Tables\Dsdt.aml will generate Tables\Dsdt.c.
+Tables\Dsdt.c will contain a C array named "dsdt_aml_code" that contains
+the AML bytecode.
+"""
+
+## Parse the command line arguments.
+#
+# @retval A argparse.NameSpace instance, containing parsed values.
+#
+def ParseArgs():
+    # Initialize the parser.
+    Parser = argparse.ArgumentParser(description=__description__)
+
+    # Define the possible arguments.
+    Parser.add_argument(dest="InputFile",
+                        help="Path to an input AML file to generate a .c file from.")
+    Parser.add_argument("-o", "--out-dir", dest="OutDir",
+                        help="Output directory where the .c file will be generated. Default is the input file's directory.")
+
+    # Parse the input arguments.
+    Args = Parser.parse_args()
+    SplitInputName = ""
+
+    if not os.path.exists(Args.InputFile):
+        EdkLogger.error(__file__, FILE_OPEN_FAILURE,
+                        ExtraData=Args.InputFile)
+        return None
+    else:
+        with open(Args.InputFile, "rb") as fIn:
+            Signature = str(fIn.read(4))
+            if ("DSDT" not in Signature) and ("SSDT" not in Signature):
+                EdkLogger.info("Invalid file type. File does not have a valid DSDT or SSDT signature: {}".format(Args.InputFile))
+                return None
+
+    # Get the basename of the input file.
+    SplitInputName = os.path.splitext(Args.InputFile)
+    BaseName = os.path.basename(SplitInputName[0])
+
+    # If no output directory is specified, output to the input directory.
+    if not Args.OutDir:
+        Args.OutputFile = os.path.join(os.path.dirname(Args.InputFile),
+                                       BaseName + ".c")
+    else:
+        if not os.path.exists(Args.OutDir):
+            os.mkdir(Args.OutDir)
+        Args.OutputFile = os.path.join(Args.OutDir, BaseName + ".c")
+
+    Args.BaseName = BaseName
+
+    return Args
+
+## Convert an AML file to a .c file containing the AML bytecode stored
+#  in a C array.
+#
+# @param  InputFile     Path to the input AML file.
+# @param  OutputFile    Path to the output .c file to generate.
+# @param  BaseName      Base name of the input file.
+#                       This is also the name of the generated .c file.
+#
+def AmlToC(InputFile, OutputFile, BaseName):
+
+    ArrayName = BaseName.lower() + "_aml_code"
+    FileHeader =\
+"""
+// This file has been generated from:
+//   -Python script: {}
+//   -Input AML file: {}
+
+"""
+
+    with open(InputFile, "rb") as fIn, open(OutputFile, "w") as fOut:
+        # Write header.
+        fOut.write(FileHeader.format(os.path.abspath(InputFile), os.path.abspath(__file__)))
+
+        # Write the array and its content.
+        fOut.write("unsigned char {}[] = {{\n  ".format(ArrayName))
+        cnt = 0
+        byte = fIn.read(1)
+        while len(byte) != 0:
+            fOut.write("0x{0:02X}, ".format(ord(byte)))
+            cnt += 1
+            if (cnt % 8) == 0:
+                fOut.write("\n  ")
+            byte = fIn.read(1)
+        fOut.write("\n};\n")
+
+## Main method
+#
+# This method:
+#   1-  Initialize an EdkLogger instance.
+#   2-  Parses the input arguments.
+#   3-  Converts an AML file to a .c file containing the AML bytecode stored
+#       in a C array.
+#
+# @retval 0     Success.
+# @retval 1     Error.
+#
+def Main():
+    # Initialize an EdkLogger instance.
+    EdkLogger.Initialize()
+
+    try:
+        # Parse the input arguments.
+        CommandArguments = ParseArgs()
+        if not CommandArguments:
+            return 1
+
+        # Convert an AML file to a .c file containing the AML bytecode stored
+        # in a C array.
+        AmlToC(CommandArguments.InputFile, CommandArguments.OutputFile, CommandArguments.BaseName)
+    except Exception as e:
+        print(e)
+        return 1
+
+    return 0
+
+if __name__ == '__main__':
+    r = Main()
+    # 0-127 is a safe return range, and 1 is a standard default error
+    if r < 0 or r > 127: r = 1
+    sys.exit(r)