make file system type of OS partitions part of device config

config/device/common/pixel.yml

@@ -5,6 +5,8 @@ includes:
 
 device:
   vendor: google_devices
+  system_fs_type: ext4
+
   build_id: TQ3A.230805.001
   prev_build_id: TQ3A.230705.001
 

src/blobs/build.ts

@@ -25,6 +25,7 @@ import {
   SPECIAL_FILE_EXTENSIONS,
   TYPE_SHARED_LIBRARY,
 } from '../build/soong'
+import { DeviceConfig } from '../config/device'
 import { BlobEntry, blobNeedsSoong } from './entry'
 
 export interface BuildFiles {
@@ -206,7 +207,11 @@ export async function createVendorDirs(vendor: string, device: string) {
   } as VendorDirectories
 }
 
-export async function writeBuildFiles(build: BuildFiles, dirs: VendorDirectories) {
+export async function writeBuildFiles(
+  build: BuildFiles,
+  dirs: VendorDirectories,
+  config?: DeviceConfig
+) {
   if (build.rootBlueprint != undefined) {
     let bp = serializeBlueprint(build.rootBlueprint)
     await fs.writeFile(`${dirs.out}/Android.bp`, bp)
@@ -228,7 +233,7 @@ export async function writeBuildFiles(build: BuildFiles, dirs: VendorDirectories
   }
 
   if (build.boardMakefile != undefined) {
-    let mk = serializeBoardMakefile(build.boardMakefile)
+    let mk = serializeBoardMakefile(build.boardMakefile, config)
     await fs.writeFile(`${dirs.proprietary}/BoardConfigVendor.mk`, mk)
   }
 

src/build/make.ts

@@ -1,6 +1,7 @@
 import { basename, dirname } from 'path'
 import { BlobEntry } from '../blobs/entry'
 import { PartitionProps } from '../blobs/props'
+import { DeviceConfig } from '../config/device'
 import { SelinuxPartResolutions } from '../selinux/contexts'
 import { MAKEFILE_HEADER } from '../util/headers'
 
@@ -137,26 +138,28 @@ function addContBlock(blocks: Array<string>, variable: string, items: Array<stri
   }
 }
 
-export function serializeBoardMakefile(mk: BoardMakefile) {
+export function serializeBoardMakefile(mk: BoardMakefile, config?: DeviceConfig) {
   let blocks = startBlocks()
 
   // TODO: remove this when all ELF prebuilts work with Soong
   blocks.push('BUILD_BROKEN_ELF_PREBUILT_PRODUCT_COPY_FILES := true')
 
+  let systemFsType = config?.device?.system_fs_type ?? 'ext4'
+
   // Build vendor?
   if (mk.buildPartitions?.includes('vendor')) {
-    blocks.push('BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4')
+    blocks.push(`BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ${systemFsType}`)
   }
 
   // Build DLKM partitions?
   if (mk.buildPartitions?.includes('vendor_dlkm')) {
     blocks.push(`BOARD_USES_VENDOR_DLKMIMAGE := true
-BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE := ext4
+BOARD_VENDOR_DLKMIMAGE_FILE_SYSTEM_TYPE := ${systemFsType}
 TARGET_COPY_OUT_VENDOR_DLKM := vendor_dlkm`)
   }
   if (mk.buildPartitions?.includes('odm_dlkm')) {
     blocks.push(`BOARD_USES_ODM_DLKIMAGE := true
-BOARD_ODM_DLKIMAGE_FILE_SYSTEM_TYPE := ext4
+BOARD_ODM_DLKIMAGE_FILE_SYSTEM_TYPE := ${systemFsType}
 TARGET_COPY_OUT_ODM_DLKM := odm_dlkm`)
   }
 

src/config/device.ts

@@ -15,11 +15,18 @@ export enum ConfigType {
   DeviceList = 'device-list',
 }
 
+export enum FsType {
+  EXT4 = 'ext4',
+  EROFS = 'erofs',
+}
+
 export interface DeviceConfig {
   // Required
   device: {
     name: string
     vendor: string
+    // file system type of OS partitions
+    system_fs_type: FsType
     build_id: string
     prev_build_id: string
   }

src/frontend/generate.ts

@@ -376,5 +376,5 @@ export async function generateBuildFiles(
     }
   }
 
-  await writeBuildFiles(build, dirs)
+  await writeBuildFiles(build, dirs, config)
 }