119 lines
4 KiB
Go
119 lines
4 KiB
Go
// Copyright (C) 2022 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package filesystem
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import (
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"fmt"
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"github.com/google/blueprint/proptools"
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"android/soong/android"
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)
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type avbGenVbmetaImage struct {
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android.ModuleBase
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android.DefaultableModuleBase
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properties avbGenVbmetaImageProperties
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output android.OutputPath
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installDir android.InstallPath
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}
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type avbGenVbmetaImageProperties struct {
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// Source file of this image. Can reference a genrule type module with the ":module" syntax.
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Src *string `android:"path,arch_variant"`
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// Name of the image partition. Defaults to the name of this module.
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Partition_name *string
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// The salt in hex. Required for reproducible builds.
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Salt *string
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}
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// The avbGenVbmetaImage generates an unsigned VBMeta image output for the given image.
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func avbGenVbmetaImageFactory() android.Module {
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module := &avbGenVbmetaImage{}
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module.AddProperties(&module.properties)
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android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)
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android.InitDefaultableModule(module)
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return module
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}
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func (a *avbGenVbmetaImage) installFileName() string {
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return a.Name() + ".img"
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}
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func (a *avbGenVbmetaImage) GenerateAndroidBuildActions(ctx android.ModuleContext) {
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builder := android.NewRuleBuilder(pctx, ctx)
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cmd := builder.Command().BuiltTool("avbtool").Text("add_hash_footer")
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cmd.Flag("--dynamic_partition_size")
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cmd.Flag("--do_not_append_vbmeta_image")
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partition_name := proptools.StringDefault(a.properties.Partition_name, a.Name())
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cmd.FlagWithArg("--partition_name ", partition_name)
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if a.properties.Src == nil {
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ctx.PropertyErrorf("src", "missing source file")
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return
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}
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input := android.PathForModuleSrc(ctx, proptools.String(a.properties.Src))
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cmd.FlagWithInput("--image ", input)
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if a.properties.Salt == nil {
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ctx.PropertyErrorf("salt", "missing salt value")
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return
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}
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cmd.FlagWithArg("--salt ", proptools.String(a.properties.Salt))
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a.output = android.PathForModuleOut(ctx, a.installFileName()).OutputPath
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cmd.FlagWithOutput("--output_vbmeta_image ", a.output)
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builder.Build("avbGenVbmetaImage", fmt.Sprintf("avbGenVbmetaImage %s", ctx.ModuleName()))
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ctx.SetOutputFiles([]android.Path{a.output}, "")
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}
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var _ android.AndroidMkEntriesProvider = (*avbGenVbmetaImage)(nil)
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// Implements android.AndroidMkEntriesProvider
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func (a *avbGenVbmetaImage) AndroidMkEntries() []android.AndroidMkEntries {
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return []android.AndroidMkEntries{android.AndroidMkEntries{
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Class: "ETC",
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OutputFile: android.OptionalPathForPath(a.output),
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ExtraEntries: []android.AndroidMkExtraEntriesFunc{
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func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
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entries.SetString("LOCAL_MODULE_PATH", a.installDir.String())
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entries.SetString("LOCAL_INSTALLED_MODULE_STEM", a.installFileName())
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},
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},
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}}
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}
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type avbGenVbmetaImageDefaults struct {
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android.ModuleBase
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android.DefaultsModuleBase
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}
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// avb_gen_vbmeta_image_defaults provides a set of properties that can be inherited by other
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// avb_gen_vbmeta_image modules. A module can use the properties from an
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// avb_gen_vbmeta_image_defaults using `defaults: ["<:default_module_name>"]`. Properties of both
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// modules are erged (when possible) by prepending the default module's values to the depending
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// module's values.
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func avbGenVbmetaImageDefaultsFactory() android.Module {
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module := &avbGenVbmetaImageDefaults{}
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module.AddProperties(&avbGenVbmetaImageProperties{})
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android.InitDefaultsModule(module)
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return module
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}
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