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mbed-os/tools/targets/__init__.py

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"""
mbed SDK
Copyright (c) 2011-2020 ARM Limited
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
from __future__ import print_function
import os
import binascii
import struct
import shutil
import inspect
import sys
from collections import namedtuple
from copy import copy
from future.utils import raise_from
from tools.resources import FileType
from tools.settings import ROOT
from tools.targets.LPC import patch
from tools.paths import TOOLS_BOOTLOADERS
from tools.utils import json_file_to_dict, NotSupportedException
# Add PSA TF-M binary utility scripts in system path
from os.path import dirname, abspath, join
TFM_SCRIPTS = abspath(join(dirname(__file__), '..', 'psa', 'tfm', 'bin_utils'))
sys.path.insert(0, TFM_SCRIPTS)
__all__ = ["target", "TARGETS", "TARGET_MAP", "TARGET_NAMES", "CORE_LABELS",
"CORE_ARCH", "HookError", "generate_py_target", "Target",
"CUMULATIVE_ATTRIBUTES", "get_resolution_order"]
CORE_LABELS = {
"Cortex-M0": ["M0", "CORTEX_M", "LIKE_CORTEX_M0", "CORTEX"],
"Cortex-M0+": ["M0P", "CORTEX_M", "LIKE_CORTEX_M0", "CORTEX"],
"Cortex-M1": ["M1", "CORTEX_M", "LIKE_CORTEX_M1", "CORTEX"],
"Cortex-M3": ["M3", "CORTEX_M", "LIKE_CORTEX_M3", "CORTEX"],
"Cortex-M4": ["M4", "CORTEX_M", "RTOS_M4_M7", "LIKE_CORTEX_M4", "CORTEX"],
"Cortex-M4F": ["M4", "CORTEX_M", "RTOS_M4_M7", "LIKE_CORTEX_M4", "CORTEX"],
"Cortex-M7": ["M7", "CORTEX_M", "RTOS_M4_M7", "LIKE_CORTEX_M7", "CORTEX"],
"Cortex-M7F": ["M7", "CORTEX_M", "RTOS_M4_M7", "LIKE_CORTEX_M7", "CORTEX"],
"Cortex-M7FD": ["M7", "CORTEX_M", "RTOS_M4_M7", "LIKE_CORTEX_M7",
"CORTEX"],
"Cortex-A9": ["A9", "CORTEX_A", "LIKE_CORTEX_A9", "CORTEX"],
"Cortex-M23": ["M23", "CORTEX_M", "LIKE_CORTEX_M23", "CORTEX"],
"Cortex-M23-NS": ["M23", "M23_NS", "CORTEX_M", "LIKE_CORTEX_M23",
"CORTEX"],
"Cortex-M33": ["M33", "CORTEX_M", "LIKE_CORTEX_M33", "CORTEX"],
"Cortex-M33-NS": ["M33", "M33_NS", "CORTEX_M", "LIKE_CORTEX_M33",
"CORTEX"],
"Cortex-M33F": ["M33", "CORTEX_M", "LIKE_CORTEX_M33", "CORTEX"],
"Cortex-M33F-NS": ["M33", "M33_NS", "CORTEX_M", "LIKE_CORTEX_M33",
"CORTEX"],
"Cortex-M33FE": ["M33", "CORTEX_M", "LIKE_CORTEX_M33", "CORTEX"],
"Cortex-M33FE-NS": ["M33", "M33_NS", "CORTEX_M", "LIKE_CORTEX_M33",
"CORTEX"]
}
CORE_ARCH = {
"Cortex-M0": 6,
"Cortex-M0+": 6,
"Cortex-M1": 6,
"Cortex-M3": 7,
"Cortex-M4": 7,
"Cortex-M4F": 7,
"Cortex-M7": 7,
"Cortex-M7F": 7,
"Cortex-M7FD": 7,
"Cortex-A9": 7,
"Cortex-M23": 8,
"Cortex-M23-NS": 8,
"Cortex-M33": 8,
"Cortex-M33F": 8,
"Cortex-M33-NS": 8,
"Cortex-M33F-NS": 8,
"Cortex-M33FE": 8,
"Cortex-M33FE-NS": 8,
}
###############################################################################
# Generic Target class that reads and interprets the data in targets.json
class HookError(Exception):
""" A simple class that represents all the exceptions associated with
hooking
"""
pass
CACHES = {}
def cached(func):
"""A simple decorator used for automatically caching data returned by a
function
"""
def wrapper(*args, **kwargs):
"""The wrapped function itself"""
if (func.__name__, args) not in CACHES:
CACHES[(func.__name__, args)] = func(*args, **kwargs)
return CACHES[(func.__name__, args)]
return wrapper
# Cumulative attributes can have values appended to them, so they
# need to be computed differently than regular attributes
CUMULATIVE_ATTRIBUTES = [
'extra_labels', 'macros', 'device_has', 'features', 'components'
]
default_build_tools_metadata = {u'version': 0, u'public': False}
def get_resolution_order(json_data, target_name, order, level=0):
""" Return the order in which target descriptions are searched for
attributes. This mimics the Python 2.2 method resolution order, which
is what the old targets.py module used. For more details, check
http://makina-corpus.com/blog/metier/2014/python-tutorial-understanding-python-mro-class-search-path
The resolution order contains (name, level) tuples, where "name" is the
name of the class and "level" is the level in the inheritance hierarchy
(the target itself is at level 0, its first parent at level 1, its
parent's parent at level 2 and so on)
"""
# the resolution order can't contain duplicate target names
if target_name not in [l[0] for l in order]:
order.append((target_name, level))
parents = json_data[target_name].get("inherits", [])
for par in parents:
order = get_resolution_order(json_data, par, order, level + 1)
return order
def target(name, json_data):
"""Construct a target object"""
if name.startswith("_"):
raise Exception(
"Invalid target name '%s' specified,"
" target name should not start with '_'" % name
)
try:
resolution_order = get_resolution_order(json_data, name, [])
except KeyError as exc:
raise_from(NotSupportedException(
"target {} has an incomplete target definition".format(name)
), exc)
resolution_order_names = [tgt for tgt, _ in resolution_order]
return Target(
name=name,
json_data={key: value for key, value in json_data.items()
if key in resolution_order_names},
resolution_order=resolution_order,
resolution_order_names=resolution_order_names,
build_tools_metadata=json_data.get(
"__build_tools_metadata__",
default_build_tools_metadata
)
)
def generate_py_target(new_targets, name):
"""Add one or more new target(s) represented as a Python dictionary
in 'new_targets'. It is an error to add a target with a name that
already exists.
"""
base_targets = Target.get_json_target_data()
for new_target in new_targets.keys():
if new_target in base_targets:
raise Exception("Attempt to add target '%s' that already exists"
% new_target)
total_data = {}
total_data.update(new_targets)
total_data.update(base_targets)
return target(name, total_data)
class Target(namedtuple(
"Target",
"name json_data resolution_order "
"resolution_order_names build_tools_metadata"
)):
"""An object to represent a Target (MCU/Board)"""
# Default location of the 'targets.json' file
__targets_json_location_default = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
'..', '..', 'targets', 'targets.json'
)
# Current/new location of the 'targets.json' file
__targets_json_location = None
# Extra custom targets files
__extra_target_json_files = []
@staticmethod
@cached
def get_json_target_data():
"""Load the description of JSON target data"""
from_file = (Target.__targets_json_location or
Target.__targets_json_location_default)
targets = json_file_to_dict(from_file)
for tgt in targets.values():
tgt["_from_file"] = from_file
for extra_target in Target.__extra_target_json_files:
for k, v in json_file_to_dict(extra_target).items():
if k in targets:
print(
'WARNING: Custom target "%s" cannot replace existing '
'target.' % k
)
else:
targets[k] = v
targets[k]["_from_file"] = extra_target
return targets
@staticmethod
def add_extra_targets(source_dir):
extra_targets_file = os.path.join(source_dir, "custom_targets.json")
if os.path.exists(extra_targets_file):
Target.__extra_target_json_files.append(extra_targets_file)
CACHES.clear()
@staticmethod
def set_targets_json_location(location=None):
"""Set the location of the targets.json file"""
Target.__targets_json_location = (
location or
Target.__targets_json_location_default
)
Target.__extra_target_json_files = []
# Invalidate caches, since the location of the JSON file changed
CACHES.clear()
@staticmethod
@cached
def get_module_data():
"""Get the members of this module using Python's "inspect" module"""
return dict([(m[0], m[1]) for m in
inspect.getmembers(sys.modules[__name__])])
@staticmethod
def __add_paths_to_progen(data):
"""Modify the exporter specification ("progen") by changing all
"template" keys to full paths
"""
out = {}
for key, val in data.items():
if isinstance(val, dict):
out[key] = Target.__add_paths_to_progen(val)
elif key == "template":
out[key] = [
os.path.join(os.path.dirname(__file__), 'export', v)
for v in val
]
else:
out[key] = val
return out
def __getattr_cumulative(self, attrname):
"""Look for the attribute in the class and its parents, as defined by
the resolution order
"""
tdata = self.json_data
# For a cumulative attribute, figure out when it was defined the
# last time (in attribute resolution order) then follow the "_add"
# and "_remove" data fields
for idx, tgt in enumerate(self.resolution_order):
# the attribute was defined at this level in the resolution
# order
if attrname in tdata[tgt[0]]:
def_idx = idx
break
else:
return []
# Get the starting value of the attribute
starting_value = (tdata[self.resolution_order[def_idx][0]][attrname]
or [])[:]
# Traverse the resolution list in high inheritance to low
# inheritance level, left to right order to figure out all the
# other classes that change the definition by adding or removing
# elements
for idx in range(self.resolution_order[def_idx][1] - 1, -1, -1):
same_level_targets = [tar[0] for tar in self.resolution_order
if tar[1] == idx]
for tar in same_level_targets:
data = tdata[tar]
# Do we have anything to add ?
if (attrname + "_add") in data:
starting_value.extend(data[attrname + "_add"])
# Do we have anything to remove ?
if (attrname + "_remove") in data:
# Macros can be defined either without a value (MACRO)
# or with a value (MACRO=10). When removing, we specify
# only the name of the macro, without the value. So we
# need to create a mapping between the macro name and
# its value. This will work for extra_labels and other
# type of arrays as well, since they fall into the
# "macros without a value" category (simple definitions
# without a value).
name_def_map = {}
for crtv in starting_value:
if crtv.find('=') != -1:
temp = crtv.split('=')
if len(temp) != 2:
raise ValueError(
"Invalid macro definition '%s'" % crtv)
name_def_map[temp[0]] = crtv
else:
name_def_map[crtv] = crtv
for element in data[attrname + "_remove"]:
if element not in name_def_map:
raise ValueError(
("Unable to remove '%s' in '%s.%s' since "
% (element, self.name, attrname)) +
"it doesn't exist")
starting_value.remove(name_def_map[element])
return starting_value
def __getattr_helper(self, attrname):
"""Compute the value of a given target attribute"""
if attrname in CUMULATIVE_ATTRIBUTES:
return self.__getattr_cumulative(attrname)
else:
tdata = self.json_data
for tgt in self.resolution_order:
data = tdata[tgt[0]]
try:
return data[attrname]
except KeyError:
pass
else: # Attribute not found
raise AttributeError(
"Attribute '%s' not found in target '%s'"
% (attrname, self.name))
def __getattr__(self, attrname):
""" Return the value of an attribute. This function only computes the
attribute's value once, then adds it to the instance attributes (in
__dict__), so the next time it is returned directly
"""
result = self.__getattr_helper(attrname)
self.__dict__[attrname] = result
return result
@staticmethod
@cached
def get_target(target_name):
""" Return the target instance starting from the target name """
return target(target_name, Target.get_json_target_data())
@property
def program_cycle_s(self):
"""Special override for program_cycle_s as it's default value depends
upon is_disk_virtual
"""
try:
return self.__getattr__("program_cycle_s")
except AttributeError:
return 4 if self.is_disk_virtual else 1.5
@property
def labels(self):
"""Get all possible labels for this target"""
names = copy(self.resolution_order_names)
if "Target" in names:
names.remove("Target")
labels = (names + CORE_LABELS[self.core] + self.extra_labels)
return labels
@property
def core_without_NS(self):
if self.core.endswith('-NS'):
return self.core[:-3]
else:
return self.core
@property
def is_TrustZone_non_secure_target(self):
return self.core.endswith('-NS')
@property
def is_TrustZone_target(self):
return self.is_TrustZone_non_secure_target
@property
def is_PSA_target(self):
return 'PSA' in self.features
@property
def is_TFM_target(self):
return 'TFM' in self.labels
def get_post_build_hook(self, toolchain_labels):
"""Initialize the post-build hooks for a toolchain. For now, this
function only allows "post binary" hooks (hooks that are executed
after the binary image is extracted from the executable file)
Positional Arguments:
hook - the hook object to add post-binary-hooks to
toolchain - the toolchain object for inspection
Return Value:
A callable if any post-build hook is applicable or None
"""
try:
hook_data = self.post_binary_hook
except AttributeError:
return None
# If hook is null, also return
if hook_data is None:
return None
# A hook was found. The hook's name is in the format
# "classname.functionname"
temp = hook_data["function"].split(".")
if len(temp) != 2:
raise HookError(
("Invalid format for hook '%s' in target '%s'"
% (hook_data["function"], self.name)) +
" (must be 'class_name.function_name')")
class_name, function_name = temp
# "class_name" must refer to a class in this file, so check if the
# class exists
mdata = self.get_module_data()
if not inspect.isclass(mdata.get(class_name, None)):
raise HookError(
("Class '%s' required by '%s' in target '%s'"
% (class_name, hook_data["function"], self.name)) +
" not found in targets.py")
# "function_name" must refer to a static function inside class
# "class_name"
cls = mdata[class_name]
if not inspect.isfunction(getattr(cls, function_name, None)):
raise HookError(
("Static function '%s' " % function_name) +
("required by '%s' " % hook_data["function"]) +
("in target '%s' " % self.name) +
("not found in class '%s'" % class_name))
# Check if the hook specification also has toolchain restrictions
toolchain_restrictions = set(hook_data.get("toolchains", []))
if toolchain_restrictions and \
not set(toolchain_labels).intersection(toolchain_restrictions):
return None
return getattr(cls, function_name)
###############################################################################
# Target specific code goes in this section
# This code can be invoked from the target description using the
# "post_binary_hook" key
class LPCTargetCode(object):
"""General LPC Target patching code"""
@staticmethod
def lpc_patch(t_self, resources, elf, binf):
"""Patch an elf file"""
t_self.notify.debug("LPC Patch: %s" % os.path.split(binf)[1])
patch(binf)
class MTSCode(object):
"""Generic MTS code"""
@staticmethod
def _combine_bins_helper(target_name, binf):
"""combine bins with the bootloader for a particular target"""
loader = os.path.join(TOOLS_BOOTLOADERS, target_name, "bootloader.bin")
target = binf + ".tmp"
if not os.path.exists(loader):
print("Can't find bootloader binary: " + loader)
return
outbin = open(target, 'w+b')
part = open(loader, 'rb')
data = part.read()
outbin.write(data)
outbin.write(b'\xFF' * (64*1024 - len(data)))
part.close()
part = open(binf, 'rb')
data = part.read()
outbin.write(data)
part.close()
outbin.seek(0, 0)
data = outbin.read()
outbin.seek(0, 1)
crc = struct.pack('<I', binascii.crc32(data) & 0xFFFFFFFF)
outbin.write(crc)
outbin.close()
os.remove(binf)
os.rename(target, binf)
@staticmethod
def combine_bins_mts_dot(t_self, resources, elf, binf):
"""A hook for the MTS MDOT"""
MTSCode._combine_bins_helper("MTS_MDOT_F411RE", binf)
@staticmethod
def combine_bins_mts_dragonfly(t_self, resources, elf, binf):
"""A hoof for the MTS Dragonfly"""
MTSCode._combine_bins_helper("MTS_DRAGONFLY_F411RE", binf)
@staticmethod
def combine_bins_mtb_mts_dragonfly(t_self, resources, elf, binf):
"""A hook for the MTB MTS Dragonfly"""
MTSCode._combine_bins_helper("MTB_MTS_DRAGONFLY", binf)
class LPC4088Code(object):
"""Code specific to the LPC4088"""
@staticmethod
def binary_hook(t_self, resources, elf, binf):
"""Hook to be run after an elf file is built"""
if not os.path.isdir(binf):
# Regular binary file, nothing to do
LPCTargetCode.lpc_patch(t_self, resources, elf, binf)
return
outbin = open(binf + ".temp", "wb")
partf = open(os.path.join(binf, "ER_IROM1"), "rb")
# Pad the fist part (internal flash) with 0xFF to 512k
data = partf.read()
outbin.write(data)
outbin.write(b'\xFF' * (512*1024 - len(data)))
partf.close()
# Read and append the second part (external flash) in chunks of fixed
# size
chunksize = 128 * 1024
partf = open(os.path.join(binf, "ER_IROM2"), "rb")
while True:
data = partf.read(chunksize)
outbin.write(data)
if len(data) < chunksize:
break
partf.close()
outbin.close()
# Remove the directory with the binary parts and rename the temporary
# file to 'binf'
shutil.rmtree(binf, True)
os.rename(binf + '.temp', binf)
t_self.notify.debug(
"Generated custom binary file (internal flash + SPIFI)"
)
LPCTargetCode.lpc_patch(t_self, resources, elf, binf)
class TEENSY3_1Code(object):
"""Hooks for the TEENSY3.1"""
@staticmethod
def binary_hook(t_self, resources, elf, binf):
"""Hook that is run after elf is generated"""
# This function is referenced by old versions of targets.json and
# should be kept for backwards compatibility.
pass
class MCU_NRF51Code(object):
"""NRF51 Hooks"""
@staticmethod
def binary_hook(t_self, resources, _, binf):
"""Hook that merges the soft device with the bin file"""
# Scan to find the actual paths of soft device
sdf = None
sd_with_offsets = t_self.target.EXPECTED_SOFTDEVICES_WITH_OFFSETS
for softdevice_and_offset_entry in sd_with_offsets:
for hexf in resources.get_file_paths(FileType.HEX):
if hexf.find(softdevice_and_offset_entry['name']) != -1:
t_self.notify.debug("SoftDevice file found %s."
% softdevice_and_offset_entry['name'])
sdf = hexf
if sdf is not None:
break
if sdf is not None:
break
if sdf is None:
t_self.notify.debug("Hex file not found. Aborting.")
return
# Look for bootloader file that matches this soft device or bootloader
# override image
blf = None
if t_self.target.MERGE_BOOTLOADER is True:
for hexf in resources.get_file_paths(FileType.HEX):
if hexf.find(t_self.target.OVERRIDE_BOOTLOADER_FILENAME) != -1:
t_self.notify.debug(
"Bootloader file found %s."
% t_self.target.OVERRIDE_BOOTLOADER_FILENAME
)
blf = hexf
break
elif hexf.find(softdevice_and_offset_entry['boot']) != -1:
t_self.notify.debug("Bootloader file found %s."
% softdevice_and_offset_entry['boot'])
blf = hexf
break
# Merge user code with softdevice
from intelhex import IntelHex
binh = IntelHex()
_, ext = os.path.splitext(binf)
if ext == ".hex":
binh.loadhex(binf)
elif ext == ".bin":
binh.loadbin(binf, softdevice_and_offset_entry['offset'])
if t_self.target.MERGE_SOFT_DEVICE is True:
t_self.notify.debug("Merge SoftDevice file %s"
% softdevice_and_offset_entry['name'])
sdh = IntelHex(sdf)
sdh.start_addr = None
binh.merge(sdh)
if t_self.target.MERGE_BOOTLOADER is True and blf is not None:
t_self.notify.debug("Merge BootLoader file %s" % blf)
blh = IntelHex(blf)
blh.start_addr = None
binh.merge(blh)
with open(binf.replace(".bin", ".hex"), "w") as fileout:
binh.write_hex_file(fileout, write_start_addr=False)
class NCS36510TargetCode(object):
@staticmethod
def ncs36510_addfib(t_self, resources, elf, binf):
from tools.targets.NCS import add_fib_at_start
print("binf ", binf)
add_fib_at_start(binf[:-4])
class RTL8195ACode(object):
"""RTL8195A Hooks"""
@staticmethod
def binary_hook(t_self, resources, elf, binf):
from tools.targets.REALTEK_RTL8195AM import rtl8195a_elf2bin
rtl8195a_elf2bin(t_self, elf, binf)
class PSOC6Code(object):
@staticmethod
def complete(t_self, resources, elf, binf):
from tools.targets.PSOC6 import complete as psoc6_complete
if hasattr(t_self.target, "hex_filename"):
hex_filename = t_self.target.hex_filename
# Completing main image involves merging M0 image.
from tools.targets.PSOC6 import find_cm0_image
m0hexf = find_cm0_image(t_self, resources, elf, binf, hex_filename)
psoc6_complete(t_self, elf, binf, m0hexf)
else:
psoc6_complete(t_self, elf, binf)
@staticmethod
def sign_image(t_self, resources, elf, binf):
"""
Calls sign_image function to add signature to Secure Boot binary file.
This function is used with Cypress kits, that support cysecuretools signing.
"""
from tools.targets.PSOC6 import sign_image as psoc6_sign_image
if hasattr(t_self.target, "hex_filename"):
hex_filename = t_self.target.hex_filename
# Completing main image involves merging M0 image.
from tools.targets.PSOC6 import find_cm0_image
m0hexf = find_cm0_image(t_self, resources, elf, binf, hex_filename)
psoc6_sign_image(t_self, resources, elf, binf, m0hexf)
class ArmMuscaA1Code(object):
"""Musca-A1 Hooks"""
@staticmethod
def binary_hook(t_self, resources, elf, binf):
from tools.targets.ARM_MUSCA_A1 import musca_tfm_bin
configured_secure_image_filename = t_self.target.secure_image_filename
secure_bin = find_secure_image(
t_self.notify,
resources,
binf,
configured_secure_image_filename,
FileType.BIN
)
musca_tfm_bin(t_self, binf, secure_bin)
class ArmMuscaB1Code(object):
"""Musca-B1 Hooks"""
@staticmethod
def binary_hook(t_self, resources, elf, binf):
from tools.targets.ARM_MUSCA_B1 import musca_tfm_bin
configured_secure_image_filename = t_self.target.secure_image_filename
secure_bin = find_secure_image(
t_self.notify,
resources,
binf,
configured_secure_image_filename,
FileType.BIN
)
musca_tfm_bin(t_self, binf, secure_bin)
def find_secure_image(notify, resources, ns_image_path,
configured_s_image_filename, image_type):
""" Find secure image. """
if configured_s_image_filename is None:
return None
assert ns_image_path and configured_s_image_filename, \
'ns_image_path and configured_s_image_path are mandatory'
assert image_type in [FileType.BIN, FileType.HEX], \
'image_type must be of type BIN or HEX'
image_files = resources.get_file_paths(image_type)
assert image_files, 'No image files found for this target'
secure_image = next(
(f for f in image_files if
os.path.basename(f) == configured_s_image_filename), None)
secure_image = next(
(f for f in image_files if
os.path.splitext(os.path.basename(f))[0] ==
os.path.splitext(os.path.basename(ns_image_path))[0]),
secure_image
)
if secure_image:
notify.debug("Secure image file found: %s." % secure_image)
else:
notify.debug("Secure image file %s not found. Aborting."
% configured_s_image_filename)
raise Exception("Required secure image not found.")
return secure_image
class M2351Code(object):
"""M2351 Hooks"""
@staticmethod
def merge_secure(t_self, resources, ns_elf, ns_hex):
t_self.notify.info("Merging non-secure image with secure image")
configured_secure_image_filename = t_self.target.secure_image_filename
t_self.notify.info("Non-secure elf image %s" % ns_elf)
t_self.notify.info("Non-secure hex image %s" % ns_hex)
t_self.notify.info("Finding secure image %s" % configured_secure_image_filename)
s_hex = find_secure_image(
t_self.notify,
resources,
ns_hex,
configured_secure_image_filename,
FileType.HEX
)
t_self.notify.info("Found secure image %s" % s_hex)
_, ext = os.path.splitext(s_hex)
if ext != ".hex":
t_self.notify.debug("Secure image %s must be in Intel HEX format" % s_hex)
return
if not os.path.isfile(s_hex):
t_self.notify.debug("Secure image %s must be regular file" % s_hex)
return
ns_main, ext = os.path.splitext(ns_hex)
if ext != ".hex":
t_self.notify.debug("Non-secure image %s must be in Intel HEX format" % s_hex)
return
if not os.path.isfile(ns_hex):
t_self.notify.debug("Non-secure image %s must be regular file" % s_hex)
return
# Keep original non-secure before merge with secure
ns_nosecure_hex = ns_main + "_no-secure-merge" + ext
t_self.notify.info("Keep no-secure-merge image %s" % ns_nosecure_hex)
shutil.copy2(ns_hex, ns_nosecure_hex)
# Merge secure and non-secure and save to non-secure (override it)
from intelhex import IntelHex
s_ih = IntelHex()
s_ih.loadhex(s_hex)
ns_ih = IntelHex()
ns_ih.loadhex(ns_hex)
ns_ih.start_addr = None
s_ih.merge(ns_ih)
s_ih.tofile(ns_hex, 'hex')
# End Target specific section
###############################################################################
def update_target_data():
"""Instantiate all public targets"""
TARGETS[:] = [Target.get_target(tgt) for tgt, obj
in Target.get_json_target_data().items()
if obj.get("public", True)]
# Map each target name to its unique instance
TARGET_MAP.clear()
TARGET_MAP.update(dict([(tgt.name, tgt) for tgt in TARGETS]))
TARGET_NAMES[:] = TARGET_MAP.keys()
TARGETS = []
TARGET_MAP = dict()
TARGET_NAMES = []
update_target_data()
# Some targets with different name have the same exporters
EXPORT_MAP = {}
# Detection APIs
def get_target_detect_codes():
""" Returns dictionary mapping detect_code -> platform_name
"""
result = {}
for tgt in TARGETS:
for detect_code in tgt.detect_code:
result[detect_code] = tgt.name
return result
def set_targets_json_location(location=None):
"""Sets the location of the JSON file that contains the targets"""
# First instruct Target about the new location
Target.set_targets_json_location(location)
# Then re-initialize TARGETS, TARGET_MAP and TARGET_NAMES. The
# re-initialization does not create new variables, it keeps the old ones
# instead. This ensures compatibility with code that does
# "from tools.targets import TARGET_NAMES"
update_target_data()
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