Add support to sign bootable images with vboot_signer

Add vboot properties to the dictionary file, which will be packed into
the target_files zip. Add support in packaging and OTA scripts to
sign the generated bootable images (boot.img and recovery.img) when
vboot is enabled.

Change-Id: I08758ced03d173219415bca762bbdb66c464a9f5
(cherry picked from commit 5d5a3bd9e8d8b14b71d1b2105417a2958d13d3d2)
This commit is contained in:
Tao Bao 2015-03-29 23:07:41 -07:00
parent 3cc6a0f22f
commit d95e9fd267
2 changed files with 29 additions and 3 deletions

View File

@ -717,6 +717,10 @@ $(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VERITY),$(hide) echo "verit
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VERITY),$(hide) echo "verity_signer_cmd=$(VERITY_SIGNER)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SYSTEM_VERITY_PARTITION),$(hide) echo "system_verity_block_device=$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SYSTEM_VERITY_PARTITION)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VENDOR_VERITY_PARTITION),$(hide) echo "vendor_verity_block_device=$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VENDOR_VERITY_PARTITION)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot=$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot_key=$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VBOOT_SIGNING_KEY)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT),$(hide) echo "futility=$(FUTILITY)" >> $(1))
$(if $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT),$(hide) echo "vboot_signer_cmd=$(VBOOT_SIGNER)" >> $(1))
$(if $(filter true,$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)),\
$(hide) echo "system_root_image=true" >> $(1);\
echo "ramdisk_dir=$(TARGET_ROOT_OUT)" >> $(1))
@ -847,9 +851,13 @@ define build-recoveryimage-target
$(hide) cat $(INSTALLED_DEFAULT_PROP_TARGET) $(recovery_build_prop) \
> $(TARGET_RECOVERY_ROOT_OUT)/default.prop
$(hide) $(MKBOOTFS) $(TARGET_RECOVERY_ROOT_OUT) | $(MINIGZIP) > $(recovery_ramdisk)
$(hide) $(MKBOOTIMG) $(INTERNAL_RECOVERYIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --output $(1)
$(if $(filter true,$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT)), \
$(hide) $(MKBOOTIMG) $(INTERNAL_RECOVERYIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --output $(1).unsigned, \
$(hide) $(MKBOOTIMG) $(INTERNAL_RECOVERYIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) --output $(1))
$(if $(filter true,$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VERITY)),\
$(BOOT_SIGNER) /recovery $(1) $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VERITY_SIGNING_KEY).pk8 $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VERITY_SIGNING_KEY).x509.pem $(1))
$(if $(filter true,$(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VBOOT)), \
$(VBOOT_SIGNER) $(FUTILITY) $(1).unsigned $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VBOOT_SIGNING_KEY).vbpubk $(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_VBOOT_SIGNING_KEY).vbprivk $(1).keyblock $(1))
$(hide) $(call assert-max-image-size,$(1),$(BOARD_RECOVERYIMAGE_PARTITION_SIZE))
@echo ----- Made recovery image: $(1) --------
endef

View File

@ -346,8 +346,14 @@ def BuildBootableImage(sourcedir, fs_config_file, info_dict=None):
if args and args.strip():
cmd.extend(shlex.split(args))
cmd.extend(["--ramdisk", ramdisk_img.name,
"--output", img.name])
img_unsigned = None
if info_dict.get("vboot", None):
img_unsigned = tempfile.NamedTemporaryFile()
cmd.extend(["--ramdisk", ramdisk_img.name,
"--output", img_unsigned.name])
else:
cmd.extend(["--ramdisk", ramdisk_img.name,
"--output", img.name])
p = Run(cmd, stdout=subprocess.PIPE)
p.communicate()
@ -362,6 +368,18 @@ def BuildBootableImage(sourcedir, fs_config_file, info_dict=None):
p.communicate()
assert p.returncode == 0, "boot_signer of %s image failed" % path
# Sign the image if vboot is non-empty.
elif info_dict.get("vboot", None):
path = "/" + os.path.basename(sourcedir).lower()
img_keyblock = tempfile.NamedTemporaryFile()
cmd = [info_dict["vboot_signer_cmd"], info_dict["futility"],
img_unsigned.name, info_dict["vboot_key"] + ".vbpubk",
info_dict["vboot_key"] + ".vbprivk", img_keyblock.name,
img.name]
p = Run(cmd, stdout=subprocess.PIPE)
p.communicate()
assert p.returncode == 0, "vboot_signer of %s image failed" % path
img.seek(os.SEEK_SET, 0)
data = img.read()