Merge changes from topic "import_product_def_vars" into main

* changes:
  Generate android_device module from filesystem_creator
  Import some product definition variables to Soong
  Introduce android_device module type
diff --git a/android/variable.go b/android/variable.go
index 417ba89..5aa74bd 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -475,6 +475,8 @@
 
 	ProductManufacturer string `json:",omitempty"`
 	ProductBrand        string `json:",omitempty"`
+	ProductDevice       string `json:",omitempty"`
+	ProductModel        string `json:",omitempty"`
 
 	ReleaseVersion          string   `json:",omitempty"`
 	ReleaseAconfigValueSets []string `json:",omitempty"`
diff --git a/filesystem/Android.bp b/filesystem/Android.bp
index a08f7cf..23ec3da 100644
--- a/filesystem/Android.bp
+++ b/filesystem/Android.bp
@@ -16,6 +16,7 @@
     ],
     srcs: [
         "aconfig_files.go",
+        "android_device.go",
         "avb_add_hash_footer.go",
         "avb_gen_vbmeta_image.go",
         "bootimg.go",
diff --git a/filesystem/android_device.go b/filesystem/android_device.go
new file mode 100644
index 0000000..68e6053
--- /dev/null
+++ b/filesystem/android_device.go
@@ -0,0 +1,73 @@
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filesystem
+
+import (
+	"android/soong/android"
+
+	"github.com/google/blueprint"
+	"github.com/google/blueprint/proptools"
+)
+
+type PartitionNameProperties struct {
+	// Name of the Boot_partition_name partition filesystem module
+	Boot_partition_name *string
+	// Name of the System partition filesystem module
+	System_partition_name *string
+	// Name of the System_ext partition filesystem module
+	System_ext_partition_name *string
+	// Name of the Product partition filesystem module
+	Product_partition_name *string
+	// Name of the Vendor partition filesystem module
+	Vendor_partition_name *string
+}
+
+type androidDevice struct {
+	android.ModuleBase
+
+	partitionProps PartitionNameProperties
+}
+
+func AndroidDeviceFactory() android.Module {
+	module := &androidDevice{}
+	module.AddProperties(&module.partitionProps)
+	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
+
+	return module
+}
+
+type partitionDepTagType struct {
+	blueprint.BaseDependencyTag
+}
+
+var filesystemDepTag partitionDepTagType
+
+func (a *androidDevice) DepsMutator(ctx android.BottomUpMutatorContext) {
+	addDependencyIfDefined := func(dep *string) {
+		if dep != nil {
+			ctx.AddDependency(ctx.Module(), filesystemDepTag, proptools.String(dep))
+		}
+	}
+
+	addDependencyIfDefined(a.partitionProps.Boot_partition_name)
+	addDependencyIfDefined(a.partitionProps.System_partition_name)
+	addDependencyIfDefined(a.partitionProps.System_ext_partition_name)
+	addDependencyIfDefined(a.partitionProps.Product_partition_name)
+	addDependencyIfDefined(a.partitionProps.Vendor_partition_name)
+}
+
+func (a *androidDevice) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+
+}
diff --git a/fsgen/filesystem_creator.go b/fsgen/filesystem_creator.go
index 3f2208d..d75a4a2 100644
--- a/fsgen/filesystem_creator.go
+++ b/fsgen/filesystem_creator.go
@@ -66,14 +66,35 @@
 			f.properties.Unsupported_partition_types = append(f.properties.Unsupported_partition_types, partitionType)
 		}
 	}
+	f.createDeviceModule(ctx)
 }
 
-func (f *filesystemCreator) generatedModuleNameForPartition(cfg android.Config, partitionType string) string {
+func (f *filesystemCreator) generatedModuleName(cfg android.Config, suffix string) string {
 	prefix := "soong"
 	if cfg.HasDeviceProduct() {
 		prefix = cfg.DeviceProduct()
 	}
-	return fmt.Sprintf("%s_generated_%s_image", prefix, partitionType)
+	return fmt.Sprintf("%s_generated_%s", prefix, suffix)
+}
+
+func (f *filesystemCreator) generatedModuleNameForPartition(cfg android.Config, partitionType string) string {
+	return f.generatedModuleName(cfg, fmt.Sprintf("%s_image", partitionType))
+}
+
+func (f *filesystemCreator) createDeviceModule(ctx android.LoadHookContext) {
+	baseProps := &struct {
+		Name *string
+	}{
+		Name: proptools.StringPtr(f.generatedModuleName(ctx.Config(), "device")),
+	}
+
+	// Currently, only the system partition module is created.
+	partitionProps := &filesystem.PartitionNameProperties{}
+	if android.InList("system", f.properties.Generated_partition_types) {
+		partitionProps.System_partition_name = proptools.StringPtr(f.generatedModuleNameForPartition(ctx.Config(), "system"))
+	}
+
+	ctx.CreateModule(filesystem.AndroidDeviceFactory, baseProps, partitionProps)
 }
 
 // Creates a soong module to build the given partition. Returns false if we can't support building