diff --git a/mk2rbc/cmd/mk2rbc.go b/mk2rbc/cmd/mk2rbc.go
index b089f91..25507d2 100644
--- a/mk2rbc/cmd/mk2rbc.go
+++ b/mk2rbc/cmd/mk2rbc.go
@@ -53,10 +53,12 @@
 	// TODO(asmundak): this option is for debugging
 	allInSource           = flag.Bool("all", false, "convert all product config makefiles in the tree under //")
 	outputTop             = flag.String("outdir", "", "write output files into this directory hierarchy")
-	launcher              = flag.String("launcher", "", "generated launcher path. If set, the non-flag argument is _product_name_")
+	launcher              = flag.String("launcher", "", "generated launcher path.")
+	boardlauncher         = flag.String("boardlauncher", "", "generated board configuration launcher path.")
 	printProductConfigMap = flag.Bool("print_product_config_map", false, "print product config map and exit")
 	cpuProfile            = flag.String("cpu_profile", "", "write cpu profile to file")
 	traceCalls            = flag.Bool("trace_calls", false, "trace function calls")
+	inputVariables        = flag.String("input_variables", "", "starlark file containing product config and global variables")
 )
 
 func init() {
@@ -87,8 +89,7 @@
 	flag.Usage = func() {
 		cmd := filepath.Base(os.Args[0])
 		fmt.Fprintf(flag.CommandLine.Output(),
-			"Usage: %[1]s flags file...\n"+
-				"or:    %[1]s flags --launcher=PATH PRODUCT\n", cmd)
+			"Usage: %[1]s flags file...\n", cmd)
 		flag.PrintDefaults()
 	}
 	flag.Parse()
@@ -177,14 +178,31 @@
 		versionDefaultsPath := outputFilePath(versionDefaultsMk)
 		err = writeGenerated(versionDefaultsPath, versionDefaults)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "%s:%s", files[0], err)
+			fmt.Fprintf(os.Stderr, "%s: %s", files[0], err)
 			ok = false
 		}
 
 		err = writeGenerated(*launcher, mk2rbc.Launcher(outputFilePath(files[0]), versionDefaultsPath,
 			mk2rbc.MakePath2ModuleName(files[0])))
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "%s:%s", files[0], err)
+			fmt.Fprintf(os.Stderr, "%s: %s", files[0], err)
+			ok = false
+		}
+	}
+	if *boardlauncher != "" {
+		if len(files) != 1 {
+			quit(fmt.Errorf("a launcher can be generated only for a single product"))
+		}
+		if *inputVariables == "" {
+			quit(fmt.Errorf("the board launcher requires an input variables file"))
+		}
+		if !convertOne(*inputVariables) {
+			quit(fmt.Errorf("the board launcher input variables file failed to convert"))
+		}
+		err := writeGenerated(*boardlauncher, mk2rbc.BoardLauncher(
+			outputFilePath(files[0]), outputFilePath(*inputVariables)))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "%s: %s", files[0], err)
 			ok = false
 		}
 	}