Merge changes from topic "init_boot_img" am: 6363a04e79 am: 1368d81efa am: 2bc48d1025

Original change: https://android-review.googlesource.com/c/platform/build/+/1920818

Change-Id: I2624bc5a38be1c5742e2b80c3de916e22b526415

core/Makefile

@@ -908,8 +908,14 @@ ifneq ($(strip $(TARGET_NO_KERNEL)),true)
 INTERNAL_BOOTIMAGE_ARGS := \
 	$(addprefix --second ,$(INSTALLED_2NDBOOTLOADER_TARGET))
 
+INTERNAL_INIT_BOOT_IMAGE_ARGS :=
+
 ifneq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
-INTERNAL_BOOTIMAGE_ARGS += --ramdisk $(INSTALLED_RAMDISK_TARGET)
+  ifneq ($(BUILDING_INIT_BOOT_IMAGE),true)
+    INTERNAL_BOOTIMAGE_ARGS += --ramdisk $(INSTALLED_RAMDISK_TARGET)
+  else
+    INTERNAL_INIT_BOOT_IMAGE_ARGS += --ramdisk $(INSTALLED_RAMDISK_TARGET)
+  endif
 endif
 
 ifndef BUILDING_VENDOR_BOOT_IMAGE
@@ -1088,6 +1094,58 @@ endif # my_installed_prebuilt_gki_apex not defined
 my_apex_extracted_boot_image :=
 my_installed_prebuilt_gki_apex :=
 
+# -----------------------------------------------------------------
+#  init boot image
+ifeq ($(BUILDING_INIT_BOOT_IMAGE),true)
+
+INSTALLED_INIT_BOOT_IMAGE_TARGET := $(PRODUCT_OUT)/init_boot.img
+$(INSTALLED_INIT_BOOT_IMAGE_TARGET): $(MKBOOTIMG) $(INSTALLED_RAMDISK_TARGET)
+
+ifdef BOARD_KERNEL_PAGESIZE
+  INTERNAL_INIT_BOOT_IMAGE_ARGS += --pagesize $(BOARD_KERNEL_PAGESIZE)
+endif
+
+ifeq ($(BOARD_AVB_ENABLE),true)
+$(INSTALLED_INIT_BOOT_IMAGE_TARGET): $(AVBTOOL) $(BOARD_AVB_INIT_BOOT_IMAGE_KEY_PATH)
+	$(call pretty,"Target init_boot image: $@")
+	$(MKBOOTIMG) $(INTERNAL_INIT_BOOT_IMAGE_ARGS) $(INTERNAL_MKBOOTIMG_VERSION_ARGS) $(BOARD_MKBOOTIMG_INIT_ARGS) --output $@
+	$(call assert-max-image-size,$@,$(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE))
+	$(AVBTOOL) add_hash_footer \
+           --image $@ \
+	   --partition_size $(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE) \
+	   --partition_name init_boot $(INTERNAL_AVB_INIT_BOOT_SIGNING_ARGS) \
+	   $(BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS)
+else
+$(INSTALLED_INIT_BOOT_IMAGE_TARGET):
+	$(call pretty,"Target init_boot image: $@")
+	$(MKBOOTIMG) $(INTERNAL_INIT_BOOT_IMAGE_ARGS) $(INTERNAL_MKBOOTIMG_VERSION_ARGS) $(BOARD_MKBOOTIMG_INIT_ARGS) --output $@
+	$(call assert-max-image-size,$@,$(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE))
+endif
+
+else # BUILDING_INIT_BOOT_IMAGE is not true
+
+ifdef BOARD_PREBUILT_INIT_BOOT_IMAGE
+INTERNAL_PREBUILT_INIT_BOOT_IMAGE := $(BOARD_PREBUILT_INIT_BOOT_IMAGE)
+INSTALLED_INIT_BOOT_IMAGE_TARGET := $(PRODUCT_OUT)/init_boot.img
+
+ifeq ($(BOARD_AVB_ENABLE),true)
+$(INSTALLED_INIT_BOOT_IMAGE_TARGET): $(INTERNAL_PREBUILT_INIT_BOOT_IMAGE) $(AVBTOOL) $(BOARD_AVB_INIT_BOOT_KEY_PATH)
+	cp $(INTERNAL_PREBUILT_INIT_BOOT_IMAGE) $@
+	$(AVBTOOL) add_hash_footer \
+	    --image $@ \
+	    --partition_size $(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE) \
+	    --partition_name boot $(INTERNAL_AVB_INIT_BOOT_SIGNING_ARGS) \
+	    $(BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS)
+else
+$(INSTALLED_INIT_BOOT_IMAGE_TARGET): $(INTERNAL_PREBUILT_INIT_BOOT_IMAGE)
+	cp $(INTERNAL_PREBUILT_INIT_BOOT_IMAGE) $@
+endif # BOARD_AVB_ENABLE
+
+else # BOARD_PREBUILT_INIT_BOOT_IMAGE not defined
+INSTALLED_INIT_BOOT_IMAGE_TARGET :=
+endif # BOARD_PREBUILT_INIT_BOOT_IMAGE
+
+endif # BUILDING_INIT_BOOT_IMAGE is not true
 # -----------------------------------------------------------------
 # vendor boot image
 ifeq ($(BUILDING_VENDOR_BOOT_IMAGE),true)
@@ -3634,9 +3692,13 @@ BOARD_AVB_PVMFW_ADD_HASH_FOOTER_ARGS += \
     --prop com.android.build.pvmfw.fingerprint:$(BUILD_FINGERPRINT_FROM_FILE)
 
 # The following vendor- and odm-specific images needs explicit SPL set per board.
+# TODO(b/210875415) Is this security_patch property used? Should it be removed from
+# boot.img when there is no platform ramdisk included in it?
 ifdef BOOT_SECURITY_PATCH
 BOARD_AVB_BOOT_ADD_HASH_FOOTER_ARGS += \
     --prop com.android.build.boot.security_patch:$(BOOT_SECURITY_PATCH)
+BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS += \
+    --prop com.android.build.init_boot.security_patch:$(BOOT_SECURITY_PATCH)
 endif
 
 ifdef VENDOR_SECURITY_PATCH
@@ -3665,6 +3727,7 @@ BOARD_AVB_PVMFW_ADD_HASH_FOOTER_ARGS += \
 endif
 
 BOOT_FOOTER_ARGS := BOARD_AVB_BOOT_ADD_HASH_FOOTER_ARGS
+INIT_BOOT_FOOTER_ARGS := BOARD_AVB_INIT_BOOT_ADD_HASH_FOOTER_ARGS
 VENDOR_BOOT_FOOTER_ARGS := BOARD_AVB_VENDOR_BOOT_ADD_HASH_FOOTER_ARGS
 DTBO_FOOTER_ARGS := BOARD_AVB_DTBO_ADD_HASH_FOOTER_ARGS
 PVMFW_FOOTER_ARGS := BOARD_AVB_PVMFW_ADD_HASH_FOOTER_ARGS
@@ -3748,6 +3811,10 @@ ifdef INSTALLED_BOOTIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,boot))
 endif
 
+ifdef INSTALLED_INIT_BOOT_IMAGE_TARGET
+$(eval $(call check-and-set-avb-args,init_boot))
+endif
+
 ifdef INSTALLED_VENDOR_BOOTIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,vendor_boot))
 endif
@@ -3844,6 +3911,9 @@ define extract-avb-chain-public-keys
   $(if $(BOARD_AVB_BOOT_KEY_PATH),\
     $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_BOOT_KEY_PATH) \
       --output $(1)/boot.avbpubkey)
+  $(if $(BOARD_AVB_INIT_BOOT_KEY_PATH),\
+    $(hide) $(AVBTOOL) extract_public_key --key $(BOARD_AVB_INIT_BOOT_KEY_PATH) \
+      --output $(1)/init_boot.avbpubkey)
   $(if $(BOARD_AVB_VENDOR_BOOT_KEY_PATH),\
     $(AVBTOOL) extract_public_key --key $(BOARD_AVB_VENDOR_BOOT_KEY_PATH) \
       --output $(1)/vendor_boot.avbpubkey)
@@ -3947,6 +4017,7 @@ $(INSTALLED_VBMETAIMAGE_TARGET): PRIVATE_AVB_VBMETA_SIGNING_ARGS := \
 $(INSTALLED_VBMETAIMAGE_TARGET): \
 	    $(AVBTOOL) \
 	    $(INSTALLED_BOOTIMAGE_TARGET) \
+	    $(INSTALLED_INIT_BOOT_IMAGE_TARGET) \
 	    $(INSTALLED_VENDOR_BOOTIMAGE_TARGET) \
 	    $(INSTALLED_SYSTEMIMAGE_TARGET) \
 	    $(INSTALLED_VENDORIMAGE_TARGET) \
@@ -4518,6 +4589,10 @@ ifeq ($(INSTALLED_BOOTIMAGE_TARGET),)
 else
 	echo "boot_images=$(foreach b,$(INSTALLED_BOOTIMAGE_TARGET),$(notdir $(b)))" >> $@
 endif
+ifneq ($(INSTALLED_INIT_BOOT_IMAGE_TARGET),)
+	$(hide) echo "init_boot=true" >> $@
+	$(hide) echo "init_boot_size=$(BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE)" >> $@
+endif
 ifeq ($(BOARD_RAMDISK_USE_LZ4),true)
 	echo "lz4_ramdisks=true" >> $@
 endif
@@ -4551,6 +4626,7 @@ endif
 	$(hide) echo 'mkbootimg_args=$(BOARD_MKBOOTIMG_ARGS)' >> $@
 	$(hide) echo 'recovery_mkbootimg_args=$(BOARD_RECOVERY_MKBOOTIMG_ARGS)' >> $@
 	$(hide) echo 'mkbootimg_version_args=$(INTERNAL_MKBOOTIMG_VERSION_ARGS)' >> $@
+	$(hide) echo 'mkbootimg_init_args=$(BOARD_MKBOOTIMG_INIT_ARGS)' >> $@
 ifdef BOARD_GKI_SIGNING_KEY_PATH
 	$(hide) echo 'gki_signing_key_path=$(BOARD_GKI_SIGNING_KEY_PATH)' >> $@
 	$(hide) echo 'gki_signing_algorithm=$(BOARD_GKI_SIGNING_ALGORITHM)' >> $@
@@ -4928,9 +5004,10 @@ else ifdef BOARD_PREBUILT_SYSTEM_EXTIMAGE
   $(BUILT_TARGET_FILES_PACKAGE): $(INSTALLED_SYSTEM_EXTIMAGE_TARGET)
 endif
 
-ifdef BUILDING_BOOT_IMAGE
+ifneq (,$(BUILDING_BOOT_IMAGE)$(BUILDING_INIT_BOOT_IMAGE))
   $(BUILT_TARGET_FILES_PACKAGE): $(INTERNAL_RAMDISK_FILES)
-endif
+endif  # BUILDING_BOOT_IMAGE != "" || BUILDING_INIT_BOOT_IMAGE != ""
+
 ifneq (,$(INTERNAL_PREBUILT_BOOTIMAGE) $(filter true,$(BOARD_COPY_BOOT_IMAGE_TO_TARGET_FILES)))
   $(BUILT_TARGET_FILES_PACKAGE): $(INSTALLED_BOOTIMAGE_TARGET)
 endif
@@ -5252,6 +5329,10 @@ ifdef BOARD_PREBUILT_SYSTEM_EXTIMAGE
 	$(hide) mkdir -p $(zip_root)/IMAGES
 	$(hide) cp $(INSTALLED_SYSTEM_EXTIMAGE_TARGET) $(zip_root)/IMAGES/
 endif
+ifdef BOARD_PREBUILT_INIT_BOOT_IMAGE
+	$(hide) mkdir -p $(zip_root)/IMAGES
+	$(hide) cp $(INSTALLED_INIT_BOOT_IMAGE_TARGET) $(zip_root)/IMAGES/
+endif
 ifndef BOARD_PREBUILT_BOOTIMAGE
 ifneq (,$(INTERNAL_PREBUILT_BOOTIMAGE) $(filter true,$(BOARD_COPY_BOOT_IMAGE_TO_TARGET_FILES)))
 ifdef INSTALLED_BOOTIMAGE_TARGET
@@ -5329,6 +5410,13 @@ ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
 	@# BOOT/RAMDISK exists and contains the ramdisk for recovery if using BOARD_USES_RECOVERY_AS_BOOT.
 	$(hide) $(call fs_config,$(zip_root)/BOOT/RAMDISK,) > $(zip_root)/META/boot_filesystem_config.txt
 endif
+ifdef BUILDING_INIT_BOOT_IMAGE
+	$(hide) $(call package_files-copy-root, $(TARGET_RAMDISK_OUT),$(zip_root)/INIT_BOOT/RAMDISK)
+	$(hide) $(call fs_config,$(zip_root)/INIT_BOOT/RAMDISK,) > $(zip_root)/META/init_boot_filesystem_config.txt
+ifdef BOARD_KERNEL_PAGESIZE
+	$(hide) echo "$(BOARD_KERNEL_PAGESIZE)" > $(zip_root)/INIT_BOOT/pagesize
+endif # BOARD_KERNEL_PAGESIZE
+endif # BUILDING_INIT_BOOT_IMAGE
 ifneq ($(INSTALLED_VENDOR_BOOTIMAGE_TARGET),)
 	$(call fs_config,$(zip_root)/VENDOR_BOOT/RAMDISK,) > $(zip_root)/META/vendor_boot_filesystem_config.txt
 endif
@@ -5642,6 +5730,7 @@ $(PROGUARD_USAGE_ZIP): \
     $(INSTALLED_SYSTEMIMAGE_TARGET) \
     $(INSTALLED_RAMDISK_TARGET) \
     $(INSTALLED_BOOTIMAGE_TARGET) \
+    $(INSTALLED_INIT_BOOT_IMAGE_TARGET) \
     $(INSTALLED_USERDATAIMAGE_TARGET) \
     $(INSTALLED_VENDORIMAGE_TARGET) \
     $(INSTALLED_PRODUCTIMAGE_TARGET) \

core/board_config.mk

@@ -65,6 +65,7 @@ _board_strip_readonly_list += TARGET_ARCH_SUITE
 # File system variables
 _board_strip_readonly_list += BOARD_FLASH_BLOCK_SIZE
 _board_strip_readonly_list += BOARD_BOOTIMAGE_PARTITION_SIZE
+_board_strip_readonly_list += BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE
 _board_strip_readonly_list += BOARD_RECOVERYIMAGE_PARTITION_SIZE
 _board_strip_readonly_list += BOARD_SYSTEMIMAGE_PARTITION_SIZE
 _board_strip_readonly_list += BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE
@@ -122,6 +123,9 @@ _board_strip_readonly_list += BOARD_INCLUDE_RECOVERY_RAMDISK_IN_VENDOR_BOOT
 _board_strip_readonly_list += BOARD_MOVE_GSI_AVB_KEYS_TO_VENDOR_BOOT
 _board_strip_readonly_list += BOARD_COPY_BOOT_IMAGE_TO_TARGET_FILES
 
+# Prebuilt image variables
+_board_strip_readonly_list += BOARD_PREBUILT_INIT_BOOT_IMAGE
+
 # Defines the list of logical vendor ramdisk names to build or include in vendor_boot.
 _board_strip_readonly_list += BOARD_VENDOR_RAMDISK_FRAGMENTS
 
@@ -461,6 +465,25 @@ else ifeq ($(PRODUCT_BUILD_BOOT_IMAGE),true)
 endif
 .KATI_READONLY := BUILDING_BOOT_IMAGE
 
+# Are we building an init boot image
+BUILDING_INIT_BOOT_IMAGE :=
+ifeq ($(PRODUCT_BUILD_INIT_BOOT_IMAGE),)
+  ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
+    BUILDING_INIT_BOOT_IMAGE :=
+  else ifdef BOARD_PREBUILT_INIT_BOOT_IMAGE
+    BUILDING_INIT_BOOT_IMAGE :=
+  else ifdef BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE
+    BUILDING_INIT_BOOT_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_INIT_BOOT_IMAGE),true)
+  ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
+    $(error PRODUCT_BUILD_INIT_BOOT_IMAGE is true, but so is BOARD_USES_RECOVERY_AS_BOOT. Use only one option.)
+  else
+    BUILDING_INIT_BOOT_IMAGE := true
+  endif
+endif
+.KATI_READONLY := BUILDING_INIT_BOOT_IMAGE
+
 # Are we building a recovery image
 BUILDING_RECOVERY_IMAGE :=
 ifeq ($(PRODUCT_BUILD_RECOVERY_IMAGE),)
@@ -569,6 +592,11 @@ else ifndef _has_boot_img_artifact
     $(warning PRODUCT_BUILD_DEBUG_BOOT_IMAGE is true, but we're not building a boot image. \
       Skip building the debug boot image.)
   endif
+else ifdef BUILDING_INIT_BOOT_IMAGE
+  ifeq ($(PRODUCT_BUILD_DEBUG_BOOT_IMAGE),true)
+    $(warning PRODUCT_BUILD_DEBUG_BOOT_IMAGE is true, but we don't have a ramdisk in the boot image. \
+      Skip building the debug boot image.)
+  endif
 else
   ifeq ($(PRODUCT_BUILD_DEBUG_BOOT_IMAGE),)
     BUILDING_DEBUG_BOOT_IMAGE := true

core/main.mk

@@ -1603,6 +1603,9 @@ superimage_empty: $(INSTALLED_SUPERIMAGE_EMPTY_TARGET)
 .PHONY: bootimage
 bootimage: $(INSTALLED_BOOTIMAGE_TARGET)
 
+.PHONY: initbootimage
+bootimage: $(INSTALLED_INIT_BOOT_IMAGE_TARGET)
+
 ifeq (true,$(PRODUCT_EXPORT_BOOT_IMAGE_TO_DIST))
 $(call dist-for-goals, bootimage, $(INSTALLED_BOOTIMAGE_TARGET))
 endif
@@ -1629,6 +1632,7 @@ droidcore-unbundled: $(filter $(HOST_OUT_ROOT)/%,$(modules_to_install)) \
     $(INSTALLED_SYSTEMIMAGE_TARGET) \
     $(INSTALLED_RAMDISK_TARGET) \
     $(INSTALLED_BOOTIMAGE_TARGET) \
+    $(INSTALLED_INIT_BOOT_IMAGE_TARGET) \
     $(INSTALLED_RADIOIMAGE_TARGET) \
     $(INSTALLED_DEBUG_RAMDISK_TARGET) \
     $(INSTALLED_DEBUG_BOOTIMAGE_TARGET) \

core/product.mk

@@ -395,6 +395,7 @@ _product_single_value_vars += PRODUCT_BUILD_RAMDISK_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_USERDATA_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_RECOVERY_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_BOOT_IMAGE
+_product_single_value_vars += PRODUCT_BUILD_INIT_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_DEBUG_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_VENDOR_BOOT_IMAGE
 _product_single_value_vars += PRODUCT_BUILD_DEBUG_VENDOR_BOOT_IMAGE

tools/releasetools/add_img_to_target_files.py

@@ -759,6 +759,7 @@ def AddImagesToTargetFiles(filename):
 
   has_recovery = OPTIONS.info_dict.get("no_recovery") != "true"
   has_boot = OPTIONS.info_dict.get("no_boot") != "true"
+  has_init_boot = OPTIONS.info_dict.get("init_boot") == "true"
   has_vendor_boot = OPTIONS.info_dict.get("vendor_boot") == "true"
 
   # {vendor,odm,product,system_ext,vendor_dlkm,odm_dlkm, system, system_other}.img
@@ -819,6 +820,17 @@ def AddImagesToTargetFiles(filename):
           if output_zip:
             boot_image.AddToZip(output_zip)
 
+  if has_init_boot:
+    banner("init_boot")
+    init_boot_image = common.GetBootableImage(
+        "IMAGES/init_boot.img", "init_boot.img", OPTIONS.input_tmp, "INIT_BOOT")
+    if init_boot_image:
+      partitions['init_boot'] = os.path.join(OPTIONS.input_tmp, "IMAGES", "init_boot.img")
+      if not os.path.exists(partitions['init_boot']):
+        init_boot_image.WriteToDir(OPTIONS.input_tmp)
+        if output_zip:
+          init_boot_image.AddToZip(output_zip)
+
   if has_vendor_boot:
     banner("vendor_boot")
     vendor_boot_image = common.GetVendorBootImage(

tools/releasetools/common.py

@@ -111,7 +111,7 @@ SPECIAL_CERT_STRINGS = ("PRESIGNED", "EXTERNAL")
 # descriptor into vbmeta.img. When adding a new entry here, the
 # AVB_FOOTER_ARGS_BY_PARTITION in sign_target_files_apks need to be updated
 # accordingly.
-AVB_PARTITIONS = ('boot', 'dtbo', 'odm', 'product', 'pvmfw', 'recovery',
+AVB_PARTITIONS = ('boot', 'init_boot', 'dtbo', 'odm', 'product', 'pvmfw', 'recovery',
                   'system', 'system_ext', 'vendor', 'vendor_boot',
                   'vendor_dlkm', 'odm_dlkm')
 
@@ -130,7 +130,7 @@ PARTITIONS_WITH_CARE_MAP = [
 ]
 
 # Partitions with a build.prop file
-PARTITIONS_WITH_BUILD_PROP = PARTITIONS_WITH_CARE_MAP + ['boot']
+PARTITIONS_WITH_BUILD_PROP = PARTITIONS_WITH_CARE_MAP + ['boot', 'init_boot']
 
 # See sysprop.mk. If file is moved, add new search paths here; don't remove
 # existing search paths.
@@ -935,9 +935,9 @@ class PartitionBuildProps(object):
   def FromInputFile(input_file, name, placeholder_values=None, ramdisk_format=RamdiskFormat.LZ4):
     """Loads the build.prop file and builds the attributes."""
 
-    if name == "boot":
+    if name in ("boot", "init_boot"):
       data = PartitionBuildProps._ReadBootPropFile(
-          input_file, ramdisk_format=ramdisk_format)
+          input_file, name, ramdisk_format=ramdisk_format)
     else:
       data = PartitionBuildProps._ReadPartitionPropFile(input_file, name)
 
@@ -946,15 +946,16 @@ class PartitionBuildProps(object):
     return props
 
   @staticmethod
-  def _ReadBootPropFile(input_file, ramdisk_format):
+  def _ReadBootPropFile(input_file, partition_name, ramdisk_format):
     """
     Read build.prop for boot image from input_file.
     Return empty string if not found.
     """
+    image_path = 'IMAGES/' + partition_name + '.img'
     try:
-      boot_img = ExtractFromInputFile(input_file, 'IMAGES/boot.img')
+      boot_img = ExtractFromInputFile(input_file, image_path)
     except KeyError:
-      logger.warning('Failed to read IMAGES/boot.img')
+      logger.warning('Failed to read %s', image_path)
       return ''
     prop_file = GetBootImageBuildProp(boot_img, ramdisk_format=ramdisk_format)
     if prop_file is None:
@@ -1539,6 +1540,8 @@ def _BuildBootableImage(image_name, sourcedir, fs_config_file, info_dict=None,
       logger.info("Excluded kernel binary from recovery image.")
     else:
       kernel = "kernel"
+  elif partition_name == "init_boot":
+    pass
   else:
     kernel = image_name.replace("boot", "kernel")
     kernel = kernel.replace(".img", "")
@@ -1593,6 +1596,8 @@ def _BuildBootableImage(image_name, sourcedir, fs_config_file, info_dict=None,
       # Fall back to "mkbootimg_args" for recovery image
       # in case "recovery_mkbootimg_args" is not set.
       args = info_dict.get("mkbootimg_args")
+  elif partition_name == "init_boot":
+    args = info_dict.get("mkbootimg_init_args")
   else:
     args = info_dict.get("mkbootimg_args")
   if args and args.strip():
@@ -1752,9 +1757,11 @@ def GetBootableImage(name, prebuilt_name, unpack_dir, tree_subdir,
   logger.info("building image from target_files %s...", tree_subdir)
 
   # With system_root_image == "true", we don't pack ramdisk into the boot image.
+  # With init_boot == "true", we don't pack the ramdisk into boot.img.
   # Unless "recovery_as_boot" is specified, in which case we carry the ramdisk
   # for recovery.
-  has_ramdisk = (info_dict.get("system_root_image") != "true" or
+  has_ramdisk = ((info_dict.get("system_root_image") != "true" and
+                  info_dict.get("init_boot") != "true") or
                  prebuilt_name != "boot.img" or
                  info_dict.get("recovery_as_boot") == "true")
 

tools/releasetools/img_from_target_files.py

@@ -124,7 +124,7 @@ def EntriesForUserImages(input_file):
 
   for image_path in [name for name in namelist if name.startswith('IMAGES/')]:
     image = os.path.basename(image_path)
-    if OPTIONS.bootable_only and image not in('boot.img', 'recovery.img', 'bootloader'):
+    if OPTIONS.bootable_only and image not in('boot.img', 'recovery.img', 'bootloader', 'init_boot.img'):
       continue
     if not image.endswith('.img') and image != 'bootloader':
       continue

tools/releasetools/sign_target_files_apks.py

@@ -201,6 +201,7 @@ OPTIONS.allow_gsi_debug_sepolicy = False
 
 AVB_FOOTER_ARGS_BY_PARTITION = {
     'boot': 'avb_boot_add_hash_footer_args',
+    'init_boot': 'avb_init_boot_add_hash_footer_args',
     'dtbo': 'avb_dtbo_add_hash_footer_args',
     'product': 'avb_product_add_hashtree_footer_args',
     'recovery': 'avb_recovery_add_hash_footer_args',

tools/releasetools/test_sign_target_files_apks.py

@@ -62,6 +62,9 @@ name="apex.apexd_test_different_app.apex" public_key="system/apex/apexd/apexd_te
       'avb_boot_add_hash_footer_args':
           ('--prop com.android.build.boot.os_version:R '
            '--prop com.android.build.boot.security_patch:2019-09-05'),
+      'avb_init_boot_add_hash_footer_args':
+          ('--prop com.android.build.boot.os_version:R '
+           '--prop com.android.build.boot.security_patch:2019-09-05'),
       'avb_system_add_hashtree_footer_args':
           ('--prop com.android.build.system.os_version:R '
            '--prop com.android.build.system.security_patch:2019-09-05 '
@@ -77,6 +80,9 @@ name="apex.apexd_test_different_app.apex" public_key="system/apex/apexd/apexd_te
       'avb_boot_add_hash_footer_args':
           ('--prop com.android.build.boot.os_version:R '
            '--prop com.android.build.boot.security_patch:2019-09-05'),
+      'avb_init_boot_add_hash_footer_args':
+          ('--prop com.android.build.boot.os_version:R '
+           '--prop com.android.build.boot.security_patch:2019-09-05'),
       'avb_system_add_hashtree_footer_args':
           ('--prop com.android.build.system.os_version:R '
            '--prop com.android.build.system.security_patch:2019-09-05 '