firmware: Generate android-info.txt from device and version info

src/blobs/build.ts

@@ -15,6 +15,7 @@ export interface BuildFiles {
 export interface VendorDirectories {
   outDir: string
   proprietaryDir: string
+  fwDir: string
 }
 
 function nameDepKey(entry: BlobEntry) {
@@ -131,15 +132,19 @@ export async function generateBuild(
 
 export async function createVendorDirs(vendor: string, device: string) {
   let outDir = `vendor/${vendor}/${device}`
-  await fs.rm(outDir, {force: true, recursive: true})
-  await fs.mkdir(outDir, {recursive: true})
+  await fs.rm(outDir, { force: true, recursive: true })
+  await fs.mkdir(outDir, { recursive: true })
 
   let proprietaryDir = `${outDir}/proprietary`
-  await fs.mkdir(proprietaryDir, {recursive: true})
+  await fs.mkdir(proprietaryDir, { recursive: true })
+
+  let fwDir = `${proprietaryDir}/firmware`
+  await fs.mkdir(fwDir, { recursive: true })
 
   return {
     outDir: outDir,
     proprietaryDir: proprietaryDir,
+    fwDir: fwDir,
   } as VendorDirectories
 }
 

src/commands/generate-full.ts

@@ -12,7 +12,7 @@ import { findOverrideModules } from '../build/overrides'
 import { parseModuleInfo } from '../build/soong-info'
 import { parseDeviceConfig } from '../config/device'
 import { parseSystemState, SystemState } from '../config/system-state'
-import { ANDROID_INFO, extractFactoryFirmware, writeFirmwareImages } from '../factory/firmware'
+import { ANDROID_INFO, extractFactoryFirmware, generateAndroidInfo, writeFirmwareImages } from '../factory/firmware'
 import { diffPartContexts, parseContextsRecursive, parsePartContexts, resolvePartContextDiffs, SelinuxContexts } from '../sepolicy/contexts'
 import { startActionSpinner, stopActionSpinner } from '../util/cli'
 import { ALL_PARTITIONS } from '../util/partitions'
@@ -96,7 +96,7 @@ export default class GenerateFull extends Command {
 
     // 4. Extract
     // Prepare output directories
-    let {proprietaryDir} = await createVendorDirs(config.device.vendor, config.device.name)
+    let {proprietaryDir, fwDir} = await createVendorDirs(config.device.vendor, config.device.name)
     // Copy blobs (this has its own spinner)
     if (!skipCopy) {
       await copyBlobs(entries, stockRoot, proprietaryDir)
@@ -149,7 +149,16 @@ export default class GenerateFull extends Command {
     if (factoryZip != undefined) {
       spinner = startActionSpinner('Extracting firmware')
       let fwImages = await extractFactoryFirmware(factoryZip)
-      fwPaths = await writeFirmwareImages(fwImages, proprietaryDir)
+      fwPaths = await writeFirmwareImages(fwImages, fwDir)
+
+      // Generate android-info.txt from device and versions
+      let androidInfo = generateAndroidInfo(
+        config.device.name,
+        stockProps.get('vendor')!.get('ro.build.expect.bootloader')!,
+        stockProps.get('vendor')!.get('ro.build.expect.baseband')!,
+      )
+      await fs.writeFile(`${fwDir}/${ANDROID_INFO}`, androidInfo)
+
       stopActionSpinner(spinner)
     }
 
@@ -173,9 +182,8 @@ export default class GenerateFull extends Command {
 
     // Add firmware
     if (fwPaths != null) {
-      build.boardMakefile.boardInfo = fwPaths.find(p => p.includes(ANDROID_INFO))
+      build.boardMakefile.boardInfo = `${fwDir}/${ANDROID_INFO}`
       build.modulesMakefile.radioFiles = fwPaths.map(p => path.relative(proprietaryDir, p))
-        .filter(p => !p.includes(ANDROID_INFO))
     }
 
     // Dump list

src/factory/firmware.ts

@@ -7,13 +7,6 @@ export const ANDROID_INFO = 'android-info.txt'
 
 export type FirmwareImages = Map<string, ArrayBuffer>
 
-async function extractNestedImages(images: FirmwareImages, nestedZip: ArrayBuffer) {
-  let { entries } = await unzipit.unzip(nestedZip)
-  if (ANDROID_INFO in entries) {
-    images.set(ANDROID_INFO, await entries[ANDROID_INFO].arrayBuffer())
-  }
-}
-
 export async function extractFactoryFirmware(zipPath: string) {
   let reader = new NodeFileReader(zipPath)
   let images: FirmwareImages = new Map<string, ArrayBuffer>()
@@ -23,10 +16,7 @@ export async function extractFactoryFirmware(zipPath: string) {
 
     // Find images
     for (let [name, entry] of Object.entries(entries)) {
-      if (name.includes('/image-')) {
-        // Extract nested zip to get android-info.txt
-        await extractNestedImages(images, await entry.arrayBuffer())
-      } else if (name.includes('/bootloader-')) {
+      if (name.includes('/bootloader-')) {
         images.set('bootloader.img', await entry.arrayBuffer())
       } else if (name.includes('/radio-')) {
         images.set('radio.img', await entry.arrayBuffer())
@@ -39,10 +29,7 @@ export async function extractFactoryFirmware(zipPath: string) {
   }
 }
 
-export async function writeFirmwareImages(images: FirmwareImages, proprietaryDir: string) {
-  let fwDir = `${proprietaryDir}/firmware`
-  await fs.mkdir(fwDir, { recursive: true })
-
+export async function writeFirmwareImages(images: FirmwareImages, fwDir: string) {
   let paths = []
   for (let [name, buffer] of images.entries()) {
     let path = `${fwDir}/${name}`
@@ -52,3 +39,11 @@ export async function writeFirmwareImages(images: FirmwareImages, proprietaryDir
 
   return paths
 }
+
+export function generateAndroidInfo(device: string, blVersion: string, radioVersion: string) {
+  return `require board=${device}
+
+require version-bootloader=${blVersion}
+require version-baseband=${radioVersion}
+`
+}