diff --git a/fsgen/boot_imgs.go b/fsgen/boot_imgs.go
new file mode 100644
index 0000000..66d9107
--- /dev/null
+++ b/fsgen/boot_imgs.go
@@ -0,0 +1,78 @@
+package fsgen
+
+import (
+	"android/soong/android"
+	"android/soong/filesystem"
+	"path/filepath"
+
+	"github.com/google/blueprint/proptools"
+)
+
+func createBootImage(ctx android.LoadHookContext) bool {
+	partitionVariables := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+
+	if partitionVariables.TargetKernelPath == "" {
+		// There are potentially code paths that don't set TARGET_KERNEL_PATH
+		return false
+	}
+
+	kernelDir := filepath.Dir(partitionVariables.TargetKernelPath)
+	kernelBase := filepath.Base(partitionVariables.TargetKernelPath)
+	kernelFilegroupName := generatedModuleName(ctx.Config(), "kernel")
+
+	ctx.CreateModuleInDirectory(
+		android.FileGroupFactory,
+		kernelDir,
+		&struct {
+			Name       *string
+			Srcs       []string
+			Visibility []string
+		}{
+			Name:       proptools.StringPtr(kernelFilegroupName),
+			Srcs:       []string{kernelBase},
+			Visibility: []string{"//visibility:public"},
+		},
+	)
+
+	bootImageName := generatedModuleNameForPartition(ctx.Config(), "boot")
+
+	ctx.CreateModule(
+		filesystem.BootimgFactory,
+		&filesystem.BootimgProperties{
+			Kernel_prebuilt: proptools.StringPtr(":" + kernelFilegroupName),
+			Ramdisk_module:  proptools.StringPtr(generatedModuleNameForPartition(ctx.Config(), "ramdisk")),
+			Header_version:  proptools.StringPtr(partitionVariables.BoardBootHeaderVersion),
+		},
+		&struct {
+			Name *string
+		}{
+			Name: proptools.StringPtr(bootImageName),
+		},
+	)
+	return true
+}
+
+// Returns the equivalent of the BUILDING_BOOT_IMAGE variable in make. Derived from this logic:
+// https://cs.android.com/android/platform/superproject/main/+/main:build/make/core/board_config.mk;l=458;drc=5b55f926830963c02ab1d2d91e46442f04ba3af0
+func buildingBootImage(partitionVars android.PartitionVariables) bool {
+	if partitionVars.BoardUsesRecoveryAsBoot {
+		return false
+	}
+
+	if partitionVars.ProductBuildBootImage {
+		return true
+	}
+
+	if len(partitionVars.BoardPrebuiltBootimage) > 0 {
+		return false
+	}
+
+	if len(partitionVars.BoardBootimagePartitionSize) > 0 {
+		return true
+	}
+
+	// TODO: return true if BOARD_KERNEL_BINARIES is set and has a *_BOOTIMAGE_PARTITION_SIZE
+	// variable. However, I don't think BOARD_KERNEL_BINARIES is ever set in practice.
+
+	return false
+}