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[nrfconnect] Factory data generation enhancements (#22123)
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* [nrfconnect] Fix factory data script dependency check

Run the factory data generation script when the passed
arguments or the script itself change, but allow the script
to overwrite existing build artifacts in such a case.

Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>

* [nrfconnect] Generate provisional CD

By default, generate provisional CD with dummy certificate
ID and version number when CD generation is enabled in
Kconfig.

Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>

Signed-off-by: Damian Krolik <damian.krolik@nordicsemi.no>
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Damian-Nordic authored and pull[bot] committed Sep 20, 2023
1 parent fb87a10 commit 7903e4c
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Showing 2 changed files with 34 additions and 34 deletions.
50 changes: 23 additions & 27 deletions config/nrfconnect/chip-module/generate_factory_data.cmake
View file
Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,6 @@
# - To use default certification paths set CONFIG_CHIP_FACTORY_DATA_USE_DEFAULTS_CERTS_PATH=y
#
# During generation process a some file will be created in zephyr's build directory:
# - <factory_data_target>.args a file containing arguments for nrfconnect_generate_partition.py script.
# - <factory_data_target>.json a file containing all factory data written in JSON format.
#
# [Args]:
Expand Down Expand Up @@ -80,6 +79,7 @@ string(APPEND script_args "--spake2_it \"${CONFIG_CHIP_DEVICE_SPAKE2_IT}\"\n")
string(APPEND script_args "--spake2_salt \"${CONFIG_CHIP_DEVICE_SPAKE2_SALT}\"\n")
string(APPEND script_args "--discriminator ${CONFIG_CHIP_DEVICE_DISCRIMINATOR}\n")
string(APPEND script_args "--passcode ${CONFIG_CHIP_DEVICE_SPAKE2_PASSCODE}\n")
string(APPEND script_args "--overwrite\n")

# check if spake2 verifier should be generated using script
if(CONFIG_CHIP_FACTORY_DATA_GENERATE_SPAKE2_VERIFIER)
Expand All @@ -98,15 +98,21 @@ string(APPEND script_args "--enable_key \"${CONFIG_CHIP_DEVICE_ENABLE_KEY}\"\n")
endif()

# Set output JSON file and path to SCHEMA file to validate generated factory data
string(APPEND script_args "-o \"${output_path}/${factory_data_target}.json\"\n")
set(factory_data_json ${output_path}/${factory_data_target}.json)
string(APPEND script_args "-o \"${factory_data_json}\"\n")
string(APPEND script_args "-s \"${schema_path}\"\n")

# execute first script to create a JSON file
separate_arguments(separated_script_args NATIVE_COMMAND ${script_args})
add_custom_target(${factory_data_target} ALL
add_custom_command(
OUTPUT ${factory_data_json}
DEPENDS ${FACTORY_DATA_SCRIPT_PATH}
COMMAND ${Python3_EXECUTABLE} ${FACTORY_DATA_SCRIPT_PATH} ${separated_script_args}
COMMENT "Generating new Factory Data..."
)
add_custom_target(${factory_data_target} ALL
DEPENDS ${factory_data_json}
)

endfunction()

Expand All @@ -117,17 +123,16 @@ endfunction()
#
#
# During generation process some files will be created in zephyr's build directory:
# - <factory_data_target>_cbor.args a file containing arguments for nrfconnect_generate_partition.py script.
# - <factory_data_target>.hex a file containing all factory data in CBOR format.
# - <factory_data_target>.bin a binary file containing all raw factory data in CBOR format.
# - <factory_data_target>.cbor a file containing all factory data in CBOR format.
#
# [Args]:
# factory_data_target - a name for target to generate factory_data.
# script_path - a path to script that makes a factory data .hex file from given arguments.
# output_path - a path to output directory, where created JSON file will be stored.
# output_hex - an output variable to store a .hex file. This variable can be used to merge with firmware .hex file.
function(nrfconnect_create_factory_data_hex_file factory_data_target script_path output_path output_hex)
# factory_data_hex_target - a name for target to generate factory data HEX file.
# factory_data_target - a name for target to generate factory data JSON file.
# script_path - a path to script that makes a factory data .hex file from given arguments.
# output_path - a path to output directory, where created JSON file will be stored.
function(nrfconnect_create_factory_data_hex_file factory_data_hex_target factory_data_target script_path output_path)

# Pass the argument list via file
set(cbor_script_args "-i ${output_path}/${factory_data_target}.json\n")
Expand All @@ -141,12 +146,13 @@ string(APPEND cbor_script_args "-r\n")
separate_arguments(separated_cbor_script_args NATIVE_COMMAND ${cbor_script_args})
set(factory_data_hex ${output_path}/${factory_data_target}.hex)

# return output hex to parent scope
set(${output_hex} ${factory_data_hex} PARENT_SCOPE)
add_custom_command(OUTPUT ${factory_data_hex}
COMMAND ${Python3_EXECUTABLE} ${script_path} ${separated_cbor_script_args}
COMMENT "Generating factory data HEX file..."
DEPENDS ${factory_data_target}
DEPENDS ${factory_data_target} ${script_path}
)
add_custom_target(${factory_data_hex_target}
DEPENDS ${factory_data_hex}
)

endfunction()
Expand All @@ -170,7 +176,6 @@ endif()
# Localize all scripts needed to generate factory data partition
set(FACTORY_DATA_SCRIPT_PATH ${CHIP_ROOT}/scripts/tools/nrfconnect/generate_nrfconnect_chip_factory_data.py)
set(GENERATE_CBOR_SCRIPT_PATH ${CHIP_ROOT}/scripts/tools/nrfconnect/nrfconnect_generate_partition.py)
SET(MERGE_HEX_SCRIPT_PATH ${CHIP_ROOT}/config/nrfconnect/chip-module/merge_factory_data.py)
set(FACTORY_DATA_SCHEMA_PATH ${CHIP_ROOT}/scripts/tools/nrfconnect/nrfconnect_factory_data.schema)
set(OUTPUT_FILE_PATH ${APPLICATION_BINARY_DIR}/zephyr)

Expand All @@ -181,24 +186,15 @@ nrfconnect_create_factory_data_json(factory_data
${OUTPUT_FILE_PATH})

# create a .hex file with factory data in CBOR format based on the JSON file created previously
nrfconnect_create_factory_data_hex_file(factory_data
nrfconnect_create_factory_data_hex_file(factory_data_hex
factory_data
${GENERATE_CBOR_SCRIPT_PATH}
${OUTPUT_FILE_PATH}
factory_data_hex)
${OUTPUT_FILE_PATH})

if(CONFIG_CHIP_FACTORY_DATA_MERGE_WITH_FIRMWARE)
# set custom target for merging factory_data hex file
add_custom_target(factory_data_merge
DEPENDS ${factory_data_hex}
)
set_property(GLOBAL PROPERTY
factory_data_PM_HEX_FILE
${factory_data_hex}
)
set_property(GLOBAL PROPERTY
${parent_slot}_PM_TARGET
${target_name}_merge
)
set_property(GLOBAL PROPERTY factory_data_PM_HEX_FILE ${OUTPUT_FILE_PATH}/factory_data.hex)
set_property(GLOBAL PROPERTY factory_data_PM_TARGET factory_data_hex)
endif()


Expand Down
18 changes: 11 additions & 7 deletions scripts/tools/nrfconnect/generate_nrfconnect_chip_factory_data.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,7 @@ def gen_test_certs(chip_cert_exe: str,
product_id: int,
device_name: str,
generate_cd: bool = False,
cd_type: int = 1,
paa_cert_path: str = None,
paa_key_path: str = None):
"""
Expand Down Expand Up @@ -109,15 +110,15 @@ def gen_test_certs(chip_cert_exe: str,
"--key", CD_KEY_PATH,
"--cert", CD_PATH,
"--out", output + "/CD.der",
"--format-version", str(1),
"--format-version", "1",
"--vendor-id", hex(vendor_id),
"--product-id", hex(product_id),
"--device-type-id", "0xA",
"--certificate-id", "ZIG20142ZB330003-24",
"--security-level", str(0),
"--security-info", str(0),
"--certification-type", str(0),
"--version-number", "0x2694",
"--device-type-id", "0",
"--certificate-id", "FFFFFFFFFFFFFFFFFFF",
"--security-level", "0",
"--security-info", "0",
"--certification-type", str(cd_type),
"--version-number", "0xFFFF",
]
subprocess.run(cmd)

Expand Down Expand Up @@ -270,6 +271,7 @@ def generate_json(self):
self._args.product_id,
self._args.vendor_name + "_" + self._args.product_name,
self._args.gen_cd,
self._args.cd_type,
self._args.paa_cert,
self._args.paa_key)
dac_cert = certs.dac_cert
Expand Down Expand Up @@ -464,6 +466,8 @@ def base64_str(s): return base64.b64decode(s)
help="[string] Provide additional user-specific keys in JSON format: {'name_1': 'value_1', 'name_2': 'value_2', ... 'name_n', 'value_n'}.")
optional_arguments.add_argument("--gen_cd", action="store_true", default=False,
help="Generate a new Certificate Declaration in .der format according to used Vendor ID and Product ID. This certificate will not be included to the factory data.")
optional_arguments.add_argument("--cd_type", type=int, default=1,
help="[int] Type of generated Certification Declaration: 0 - development, 1 - provisional, 2 - official")
optional_arguments.add_argument("--paa_cert", type=str,
help="Provide a path to the Product Attestation Authority (PAA) certificate to generate the PAI certificate. Without providing it, a testing PAA stored in the Matter repository will be used.")
optional_arguments.add_argument("--paa_key", type=str,
Expand Down

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