89 lines
3.7 KiB
Plaintext
89 lines
3.7 KiB
Plaintext
# Adds TrustFence configuration
|
|
#
|
|
# To use it add the following line to conf/local.conf:
|
|
#
|
|
# INHERIT += "trustfence"
|
|
#
|
|
# Inheriting this class enables the following default TrustFence configuration:
|
|
#
|
|
# * Disabled console
|
|
#
|
|
|
|
# Default secure console configuration
|
|
TRUSTFENCE_CONSOLE_DISABLE ?= "0"
|
|
|
|
# Uncomment to enable the console with the specified passphrase
|
|
#TRUSTFENCE_CONSOLE_PASSPHRASE_ENABLE = "my_secure_passphrase"
|
|
|
|
# Alternatively, uncommment to enable the console with the specified GPIO
|
|
#TRUSTFENCE_CONSOLE_GPIO_ENABLE = "4"
|
|
|
|
# Default secure boot configuration
|
|
TRUSTFENCE_SIGN ?= "1"
|
|
TRUSTFENCE_SIGN_KEYS_PATH ?= "default"
|
|
TRUSTFENCE_DEK_PATH ?= "default"
|
|
TRUSTFENCE_ENCRYPT_ENVIRONMENT ?= "1"
|
|
|
|
# Trustfence initramfs image recipe
|
|
TRUSTFENCE_INITRAMFS_IMAGE ?= "dey-image-trustfence-initramfs"
|
|
|
|
IMAGE_FEATURES += "dey-trustfence"
|
|
|
|
UBOOT_EXTRA_CONF = ""
|
|
|
|
python () {
|
|
import binascii
|
|
import hashlib
|
|
import os
|
|
import glob
|
|
|
|
# Secure console configuration
|
|
if (d.getVar("TRUSTFENCE_CONSOLE_DISABLE", True) == "1"):
|
|
d.appendVar("UBOOT_EXTRA_CONF", "CONFIG_CONSOLE_DISABLE=y ")
|
|
if d.getVar("TRUSTFENCE_CONSOLE_PASSPHRASE_ENABLE", True):
|
|
passphrase_hash = hashlib.sha256(d.getVar("TRUSTFENCE_CONSOLE_PASSPHRASE_ENABLE", True)).hexdigest()
|
|
d.appendVar("UBOOT_EXTRA_CONF", 'CONFIG_CONSOLE_ENABLE_PASSPHRASE=y CONFIG_CONSOLE_ENABLE_PASSPHRASE_KEY=\\"%s\\" ' % passphrase_hash)
|
|
elif d.getVar("TRUSTFENCE_CONSOLE_GPIO_ENABLE", True):
|
|
d.appendVar("UBOOT_EXTRA_CONF", " CONFIG_CONSOLE_ENABLE_GPIO=y CONFIG_CONSOLE_ENABLE_GPIO_NR=%s " % d.getVar("TRUSTFENCE_CONSOLE_GPIO_ENABLE", True))
|
|
|
|
# Secure boot configuration
|
|
if (d.getVar("TRUSTFENCE_SIGN_KEYS_PATH", True) == "default"):
|
|
d.setVar("TRUSTFENCE_SIGN_KEYS_PATH", d.getVar("TOPDIR", True) + "/trustfence");
|
|
|
|
if (d.getVar("TRUSTFENCE_DEK_PATH", True) == "default"):
|
|
d.setVar("TRUSTFENCE_DEK_PATH", d.getVar("TRUSTFENCE_SIGN_KEYS_PATH", True) + "/dek.bin");
|
|
|
|
if (d.getVar("TRUSTFENCE_SIGN", True) == "1"):
|
|
d.appendVar("UBOOT_EXTRA_CONF", "CONFIG_SIGN_IMAGE=y ")
|
|
if d.getVar("TRUSTFENCE_SIGN_KEYS_PATH", True):
|
|
d.appendVar("UBOOT_EXTRA_CONF", 'CONFIG_SIGN_KEYS_PATH=\\"%s\\" ' % d.getVar("TRUSTFENCE_SIGN_KEYS_PATH", True))
|
|
if (d.getVar("TRUSTFENCE_UNLOCK_KEY_REVOCATION", True) == "1"):
|
|
d.appendVar("UBOOT_EXTRA_CONF", "CONFIG_UNLOCK_SRK_REVOKE=y ")
|
|
if d.getVar("TRUSTFENCE_KEY_INDEX", True):
|
|
d.appendVar("UBOOT_EXTRA_CONF", "CONFIG_KEY_INDEX=%s " % d.getVar("TRUSTFENCE_KEY_INDEX", True))
|
|
if (d.getVar("TRUSTFENCE_DEK_PATH", True) not in [None, "0"]):
|
|
d.appendVar("UBOOT_EXTRA_CONF", 'CONFIG_DEK_PATH=\\"%s\\" ' % d.getVar("TRUSTFENCE_DEK_PATH", True))
|
|
if (d.getVar("TRUSTFENCE_ENCRYPT_ENVIRONMENT", True) == "1"):
|
|
d.appendVar("UBOOT_EXTRA_CONF", 'CONFIG_ENV_AES=y CONFIG_ENV_AES_CAAM_KEY=y')
|
|
|
|
# Provide sane default values for SWUPDATE class in case Trustfence is enabled
|
|
if (d.getVar("TRUSTFENCE_SIGN", True) == "1"):
|
|
# Enable package signing.
|
|
d.setVar("SWUPDATE_SIGNING", "1")
|
|
|
|
# Retrieve the keys path to use.
|
|
keys_path = d.getVar("TRUSTFENCE_SIGN_KEYS_PATH", True)
|
|
|
|
# Retrieve the key index to use.
|
|
key_index = 0
|
|
if (d.getVar("TRUSTFENCE_KEY_INDEX", True)):
|
|
key_index = int(d.getVar("TRUSTFENCE_KEY_INDEX", True))
|
|
key_index_1 = key_index + 1
|
|
|
|
# Set the private key.
|
|
d.setVar("SWUPDATE_PRIVATE_KEY", glob.glob(keys_path + "/keys/IMG" + str(key_index_1) + "*key.pem")[0])
|
|
|
|
# Set the key password.
|
|
d.setVar("SWUPDATE_PASSWORD_FILE", keys_path + "/keys/key_pass.txt")
|
|
}
|