diff --git a/dexpreopt/config.go b/dexpreopt/config.go
new file mode 100644
index 0000000..6a4fd4a
--- /dev/null
+++ b/dexpreopt/config.go
@@ -0,0 +1,141 @@
+// Copyright 2018 Google Inc. All rights reserved.
+//
+// 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 dexpreopt
+
+import (
+	"encoding/json"
+	"io/ioutil"
+)
+
+// GlobalConfig stores the configuration for dex preopting set by the product
+type GlobalConfig struct {
+	DefaultNoStripping bool // don't strip dex files by default
+
+	DisablePreoptModules []string // modules with preopt disabled by product-specific config
+
+	OnlyPreoptBootImageAndSystemServer bool // only preopt jars in the boot image or system server
+
+	HasSystemOther        bool     // store odex files that match PatternsOnSystemOther on the system_other partition
+	PatternsOnSystemOther []string // patterns (using '%' to denote a prefix match) to put odex on the system_other partition
+
+	DisableGenerateProfile bool // don't generate profiles
+
+	BootJars         []string // jars that form the boot image
+	SystemServerJars []string // jars that form the system server
+	SystemServerApps []string // apps that are loaded into system server
+	SpeedApps        []string // apps that should be speed optimized
+
+	PreoptFlags []string // global dex2oat flags that should be used if no module-specific dex2oat flags are specified
+
+	DefaultCompilerFilter      string // default compiler filter to pass to dex2oat, overridden by --compiler-filter= in module-specific dex2oat flags
+	SystemServerCompilerFilter string // default compiler filter to pass to dex2oat for system server jars
+
+	GenerateDMFiles bool // generate Dex Metadata files
+
+	NoDebugInfo                 bool // don't generate debug info by default
+	AlwaysSystemServerDebugInfo bool // always generate mini debug info for system server modules (overrides NoDebugInfo=true)
+	NeverSystemServerDebugInfo  bool // never generate mini debug info for system server modules (overrides NoDebugInfo=false)
+	AlwaysOtherDebugInfo        bool // always generate mini debug info for non-system server modules (overrides NoDebugInfo=true)
+	NeverOtherDebugInfo         bool // never generate mini debug info for non-system server modules (overrides NoDebugInfo=true)
+
+	MissingUsesLibraries []string // libraries that may be listed in OptionalUsesLibraries but will not be installed by the product
+
+	IsEng        bool // build is a eng variant
+	SanitizeLite bool // build is the second phase of a SANITIZE_LITE build
+
+	DefaultAppImages bool // build app images (TODO: .art files?) by default
+
+	Dex2oatXmx string // max heap size
+	Dex2oatXms string // initial heap size
+
+	EmptyDirectory string // path to an empty directory
+
+	DefaultDexPreoptImageLocation map[string]string // default boot image location for each architecture
+	CpuVariant                    map[string]string // cpu variant for each architecture
+	InstructionSetFeatures        map[string]string // instruction set for each architecture
+
+	Tools Tools // paths to tools possibly used by the generated commands
+}
+
+// Tools contains paths to tools possibly used by the generated commands.  If you add a new tool here you MUST add it
+// to the order-only dependency list in DEXPREOPT_GEN_DEPS.
+type Tools struct {
+	Profman  string
+	Dex2oat  string
+	Aapt     string
+	SoongZip string
+	Zip2zip  string
+
+	VerifyUsesLibraries string
+	ConstructContext    string
+}
+
+type ModuleConfig struct {
+	Name            string
+	DexLocation     string // dex location on device
+	BuildPath       string
+	DexPath         string
+	PreferIntegrity bool
+	UncompressedDex bool
+	HasApkLibraries bool
+	PreoptFlags     []string
+
+	ProfileClassListing  string
+	ProfileIsTextListing bool
+
+	EnforceUsesLibraries  bool
+	OptionalUsesLibraries []string
+	UsesLibraries         []string
+	LibraryPaths          map[string]string
+
+	Archs                  []string
+	DexPreoptImageLocation string
+
+	PreoptExtractedApk bool // Overrides OnlyPreoptModules
+
+	NoCreateAppImage    bool
+	ForceCreateAppImage bool
+
+	PresignedPrebuilt bool
+
+	StripInputPath  string
+	StripOutputPath string
+}
+
+func LoadGlobalConfig(path string) (GlobalConfig, error) {
+	config := GlobalConfig{}
+	err := loadConfig(path, &config)
+	return config, err
+}
+
+func LoadModuleConfig(path string) (ModuleConfig, error) {
+	config := ModuleConfig{}
+	err := loadConfig(path, &config)
+	return config, err
+}
+
+func loadConfig(path string, config interface{}) error {
+	data, err := ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	err = json.Unmarshal(data, config)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}