Add super_image module type and create super image module in fsgen

fsgen processes the variables exported from make and create
the super image module. This module generates the misc-info.txt,
which is used by build_super_image.py to build the super image.

Test: CI
Bug: 376726109
Change-Id: I74a3e68d697704f36a770b3c83e5f8821b3ac128
diff --git a/fsgen/super_img.go b/fsgen/super_img.go
new file mode 100644
index 0000000..4569896
--- /dev/null
+++ b/fsgen/super_img.go
@@ -0,0 +1,91 @@
+// 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 fsgen
+
+import (
+	"strconv"
+
+	"android/soong/android"
+	"android/soong/filesystem"
+	"github.com/google/blueprint/proptools"
+)
+
+func buildingSuperImage(partitionVars android.PartitionVariables) bool {
+	return partitionVars.ProductBuildSuperPartition
+}
+
+func createSuperImage(ctx android.LoadHookContext, partitions []string, partitionVars android.PartitionVariables) {
+	baseProps := &struct {
+		Name *string
+	}{
+		Name: proptools.StringPtr(generatedModuleName(ctx.Config(), "super")),
+	}
+
+	superImageProps := &filesystem.SuperImageProperties{
+		Metadata_device:        proptools.StringPtr(partitionVars.BoardSuperPartitionMetadataDevice),
+		Block_devices:          proptools.StringPtr(partitionVars.BoardSuperPartitionBlockDevices[0]),
+		Ab_update:              proptools.BoolPtr(partitionVars.AbOtaUpdater),
+		Retrofit:               proptools.BoolPtr(partitionVars.ProductRetrofitDynamicPartitions),
+		Virtual_ab:             proptools.BoolPtr(partitionVars.ProductVirtualAbOta),
+		Virtual_ab_retrofit:    proptools.BoolPtr(partitionVars.ProductVirtualAbOtaRetrofit),
+		Use_dynamic_partitions: proptools.BoolPtr(partitionVars.ProductUseDynamicPartitions),
+	}
+	size, _ := strconv.ParseInt(partitionVars.BoardSuperPartitionSize, 10, 64)
+	superImageProps.Size = proptools.Int64Ptr(size)
+	sparse := !partitionVars.TargetUserimagesSparseExtDisabled && !partitionVars.TargetUserimagesSparseF2fsDisabled
+	superImageProps.Sparse = proptools.BoolPtr(sparse)
+
+	var partitionGroupsInfo []filesystem.PartitionGroupsInfo
+	for _, groupName := range android.SortedKeys(partitionVars.BoardSuperPartitionGroups) {
+		info := filesystem.PartitionGroupsInfo{
+			Name:          groupName,
+			GroupSize:     partitionVars.BoardSuperPartitionGroups[groupName].GroupSize,
+			PartitionList: partitionVars.BoardSuperPartitionGroups[groupName].PartitionList,
+		}
+		partitionGroupsInfo = append(partitionGroupsInfo, info)
+	}
+	superImageProps.Partition_groups = partitionGroupsInfo
+
+	partitionNameProps := &filesystem.SuperImagePartitionNameProperties{}
+	if android.InList("system", partitions) {
+		partitionNameProps.System_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "system"))
+	}
+	if android.InList("system_ext", partitions) {
+		partitionNameProps.System_ext_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "system_ext"))
+	}
+	if android.InList("system_dlkm", partitions) {
+		partitionNameProps.System_dlkm_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "system_dlkm"))
+	}
+	if android.InList("system_other", partitions) {
+		partitionNameProps.System_other_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "system_other"))
+	}
+	if android.InList("product", partitions) {
+		partitionNameProps.Product_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "product"))
+	}
+	if android.InList("vendor", partitions) {
+		partitionNameProps.Vendor_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "vendor"))
+	}
+	if android.InList("vendor_dlkm", partitions) {
+		partitionNameProps.Vendor_dlkm_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "vendor_dlkm"))
+	}
+	if android.InList("odm", partitions) {
+		partitionNameProps.Odm_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "odm"))
+	}
+	if android.InList("odm_dlkm", partitions) {
+		partitionNameProps.Odm_dlkm_partition = proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "odm_dlkm"))
+	}
+
+	ctx.CreateModule(filesystem.SuperImageFactory, baseProps, superImageProps, partitionNameProps)
+}