Update develop. Ready for pre-release v0.4 #49

Merged
mhu merged 22 commits from dev into master 2022-12-31 20:39:52 +01:00
2 changed files with 692 additions and 59 deletions
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@ -9,8 +9,9 @@ For this, it searches the follwoing sections:
3) .ccmdata 3) .ccmdata
4) .vectors 4) .vectors
All sections MUST be a multiple of 4 bytes long because the CRC calculation relies on whole 32 bit words. All sections MUST be a multiple of 4 bytes long
The sections are excrated and the CRC is calculated for each section. because the CRC calculation relies on whole 32 bit words.
The sections are extracted and the CRC is calculated for each section.
In the section .flashcrc, the script expects a single struct with the prototype: In the section .flashcrc, the script expects a single struct with the prototype:
struct flash_crcs { struct flash_crcs {
@ -22,16 +23,16 @@ struct flash_crcs {
uint32_t end_magic; uint32_t end_magic;
}; };
It checks, if the start magic and end magic are set to the appropriate values and then patches in the CRC values of the sections. It checks, if the start magic and end magic are set to the appropriate values and then
patches in the CRC values of the sections.
The magic values checked for are: 0xA8BE53F9 and 0xFFA582FF The magic values checked for are: 0xA8BE53F9 and 0xFFA582FF
""" """
from elftools.elf.elffile import ELFFile
from elftools.elf.segments import Segment
import elftools.elf.constants as elf_const
import sys import sys
import struct
from elftools.elf.elffile import ELFFile
import crcmod import crcmod
import crcmod.predefined import crcmod.predefined
import struct
crc_calc = crcmod.predefined.mkCrcFun('crc-32-mpeg') crc_calc = crcmod.predefined.mkCrcFun('crc-32-mpeg')
@ -42,6 +43,9 @@ if len(sys.argv) < 2:
filename=sys.argv[1] filename=sys.argv[1]
def section_calculate_crc(section): def section_calculate_crc(section):
"""
Calculate CRC of ELF file section
"""
data = bytearray(section.data()) data = bytearray(section.data())
be_data = bytearray([0 for k in range(0, len(data))]) be_data = bytearray([0 for k in range(0, len(data))])
# Rearrange data, because the STM controller sees it as 32 bit little endian words # Rearrange data, because the STM controller sees it as 32 bit little endian words
@ -53,62 +57,68 @@ def section_calculate_crc(section):
return crc_calc(be_data) return crc_calc(be_data)
with open(filename, 'r+b') as f: def main():
elf = ELFFile(f) """
sections = {} Main function. Patches CRCs into ELF file
sections['.text'] = elf.get_section_by_name('.text') """
sections['.data'] = elf.get_section_by_name('.data') with open(filename, 'r+b') as elf_file:
sections['.ccmdata'] = elf.get_section_by_name('.ccmdata') elf = ELFFile(elf_file)
sections['.vectors'] = elf.get_section_by_name('.vectors') sections = {}
sections['.text'] = elf.get_section_by_name('.text')
sections['.data'] = elf.get_section_by_name('.data')
sections['.ccmdata'] = elf.get_section_by_name('.ccmdata')
sections['.vectors'] = elf.get_section_by_name('.vectors')
for key, sec in sections.items(): for key, sec in sections.items():
if sec is None: if sec is None:
print("Error! Section", key, "not found in ELF file!") print("Error! Section", key, "not found in ELF file!")
sys.exit(-1)
print('Found section', key, 'Size:',
sec.data_size, 'Type:', sec['sh_type'])
if sec['sh_type'] != 'SHT_PROGBITS':
print('Error! Section must be of type SHT_PROGBITS')
sys.exit(-1)
if sec.data_size % 4 != 0:
print("Section", key,
"has wrong size. Must be a multiple of 4 bytes!")
sys.exit(-1)
text_crc = section_calculate_crc(sections['.text'])
print('CRC of .text section:', hex(text_crc))
data_crc = section_calculate_crc(sections['.data'])
print('CRC of .data section:', hex(data_crc))
ccmdata_crc = section_calculate_crc(sections['.ccmdata'])
print('CRC of .ccmdata section:', hex(ccmdata_crc))
vextors_crc = section_calculate_crc(sections['.vectors'])
print('CRC of .vectors section:', hex(vextors_crc))
# Check the flashcrc section
flashcrc_sec = elf.get_section_by_name('.flashcrc')
if flashcrc_sec is None:
print('Section for flash CRC missing!')
sys.exit(-1) sys.exit(-1)
print('Found section', key, 'Size:', if flashcrc_sec.data_size != 6*4:
sec.data_size, 'Type:', sec['sh_type']) print("Error: .flashcrc section has wrong size:",flashcrc_sec.data_size)
if sec['sh_type'] != 'SHT_PROGBITS':
print('Error! Section must be of type SHT_PROGBITS')
sys.exit(-1)
if (sec.data_size % 4 != 0):
print("Section", key, "has wrong size. Must be a multiple of 4 bytes!")
sys.exit(-1) sys.exit(-1)
text_crc = section_calculate_crc(sections['.text']) crc_sec_data = bytearray(flashcrc_sec.data())
print('CRC of .text section:', hex(text_crc)) magic1 = struct.unpack('<I'*1, bytes(crc_sec_data[0:4]))[0]
data_crc = section_calculate_crc(sections['.data']) magic2 = struct.unpack('<I'*1, bytes(crc_sec_data[-4:]))[0]
print('CRC of .data section:', hex(data_crc)) print("CRC section magic values:", hex(magic1), hex(magic2))
ccmdata_crc = section_calculate_crc(sections['.ccmdata']) if magic1 != 0xA8BE53F9 or magic2 != 0xFFA582FF:
print('CRC of .ccmdata section:', hex(ccmdata_crc)) print("Wrong magics in CRC section. Data misalignment?")
vextors_crc = section_calculate_crc(sections['.vectors']) sys.exit(-2)
print('CRC of .vectors section:', hex(vextors_crc))
# Check the flashcrc section crc_sec_offset = flashcrc_sec['sh_offset']
flashcrc_sec = elf.get_section_by_name('.flashcrc') print('CRC section ELF file offset:', hex(crc_sec_offset))
if flashcrc_sec is None:
print('Section for flash CRC missing!')
sys.exit(-1)
if flashcrc_sec.data_size != 6*4:
print("Error: .flashcrc section has wrong size:",flashcrc_sec.data_size)
sys.exit(-1);
crc_sec_data = bytearray(flashcrc_sec.data())
magic1 = struct.unpack('<I'*1, bytes(crc_sec_data[0:4]))[0]
magic2 = struct.unpack('<I'*1, bytes(crc_sec_data[-4:]))[0]
print("CRC section magic values:", hex(magic1), hex(magic2))
if magic1 != 0xA8BE53F9 or magic2 != 0xFFA582FF:
print("Wrong magics in CRC section. Data misalignment?")
sys.exit(-2)
crc_sec_offset = flashcrc_sec['sh_offset']
print('CRC section ELF file offset:', hex(crc_sec_offset))
crc_sec_data[4:8] = struct.pack('<I',text_crc)
crc_sec_data[8:12] = struct.pack('<I',data_crc)
crc_sec_data[12:16] = struct.pack('<I',ccmdata_crc)
crc_sec_data[16:20] = struct.pack('<I',vextors_crc)
f.seek(crc_sec_offset)
f.write(crc_sec_data)
print('CRCs patched successfully')
crc_sec_data[4:8] = struct.pack('<I',text_crc)
crc_sec_data[8:12] = struct.pack('<I',data_crc)
crc_sec_data[12:16] = struct.pack('<I',ccmdata_crc)
crc_sec_data[16:20] = struct.pack('<I',vextors_crc)
elf_file.seek(crc_sec_offset)
elf_file.write(crc_sec_data)
print('CRCs patched successfully')
if __name__ == '__main__':
main()

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@ -0,0 +1,623 @@
[MASTER]
# A comma-separated list of package or module names from where C extensions may
# be loaded. Extensions are loading into the active Python interpreter and may
# run arbitrary code.
extension-pkg-allow-list=
# A comma-separated list of package or module names from where C extensions may
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extension-pkg-whitelist=
# Return non-zero exit code if any of these messages/categories are detected,
# even if score is above --fail-under value. Syntax same as enable. Messages
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fail-on=
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fail-under=10.0
# Files or directories to be skipped. They should be base names, not paths.
ignore=CVS
# Add files or directories matching the regex patterns to the ignore-list. The
# regex matches against paths.
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# Files or directories matching the regex patterns are skipped. The regex
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ignore-patterns=
# Python code to execute, usually for sys.path manipulation such as
# pygtk.require().
#init-hook=
# Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
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jobs=1
# Control the amount of potential inferred values when inferring a single
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limit-inference-results=100
# List of plugins (as comma separated values of python module names) to load,
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load-plugins=
# Pickle collected data for later comparisons.
persistent=yes
# When enabled, pylint would attempt to guess common misconfiguration and emit
# user-friendly hints instead of false-positive error messages.
suggestion-mode=yes
# Allow loading of arbitrary C extensions. Extensions are imported into the
# active Python interpreter and may run arbitrary code.
unsafe-load-any-extension=no
[MESSAGES CONTROL]
# Only show warnings with the listed confidence levels. Leave empty to show
# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED.
confidence=
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disable=print-statement,
parameter-unpacking,
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bad-inline-option,
locally-disabled,
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apply-builtin,
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cmp-builtin,
coerce-builtin,
execfile-builtin,
file-builtin,
long-builtin,
raw_input-builtin,
reduce-builtin,
standarderror-builtin,
unicode-builtin,
xrange-builtin,
coerce-method,
delslice-method,
getslice-method,
setslice-method,
no-absolute-import,
old-division,
dict-iter-method,
dict-view-method,
next-method-called,
metaclass-assignment,
indexing-exception,
raising-string,
reload-builtin,
oct-method,
hex-method,
nonzero-method,
cmp-method,
input-builtin,
round-builtin,
intern-builtin,
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map-builtin-not-iterating,
zip-builtin-not-iterating,
range-builtin-not-iterating,
filter-builtin-not-iterating,
using-cmp-argument,
eq-without-hash,
div-method,
idiv-method,
rdiv-method,
exception-message-attribute,
invalid-str-codec,
sys-max-int,
bad-python3-import,
deprecated-string-function,
deprecated-str-translate-call,
deprecated-itertools-function,
deprecated-types-field,
next-method-defined,
dict-items-not-iterating,
dict-keys-not-iterating,
dict-values-not-iterating,
deprecated-operator-function,
deprecated-urllib-function,
xreadlines-attribute,
deprecated-sys-function,
exception-escape,
comprehension-escape
# Enable the message, report, category or checker with the given id(s). You can
# either give multiple identifier separated by comma (,) or put this option
# multiple time (only on the command line, not in the configuration file where
# it should appear only once). See also the "--disable" option for examples.
enable=c-extension-no-member
[REPORTS]
# Python expression which should return a score less than or equal to 10. You
# have access to the variables 'error', 'warning', 'refactor', and 'convention'
# which contain the number of messages in each category, as well as 'statement'
# which is the total number of statements analyzed. This score is used by the
# global evaluation report (RP0004).
evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
# Template used to display messages. This is a python new-style format string
# used to format the message information. See doc for all details.
#msg-template=
# Set the output format. Available formats are text, parseable, colorized, json
# and msvs (visual studio). You can also give a reporter class, e.g.
# mypackage.mymodule.MyReporterClass.
output-format=text
# Tells whether to display a full report or only the messages.
reports=no
# Activate the evaluation score.
score=yes
[REFACTORING]
# Maximum number of nested blocks for function / method body
max-nested-blocks=5
# Complete name of functions that never returns. When checking for
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# it will be considered as an explicit return statement and no message will be
# printed.
never-returning-functions=sys.exit,argparse.parse_error
[STRING]
# This flag controls whether inconsistent-quotes generates a warning when the
# character used as a quote delimiter is used inconsistently within a module.
check-quote-consistency=no
# This flag controls whether the implicit-str-concat should generate a warning
# on implicit string concatenation in sequences defined over several lines.
check-str-concat-over-line-jumps=no
[SIMILARITIES]
# Ignore comments when computing similarities.
ignore-comments=yes
# Ignore docstrings when computing similarities.
ignore-docstrings=yes
# Ignore imports when computing similarities.
ignore-imports=no
# Ignore function signatures when computing similarities.
ignore-signatures=no
# Minimum lines number of a similarity.
min-similarity-lines=4
[BASIC]
# Naming style matching correct argument names.
argument-naming-style=snake_case
# Regular expression matching correct argument names. Overrides argument-
# naming-style.
#argument-rgx=
# Naming style matching correct attribute names.
attr-naming-style=snake_case
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bar,
baz,
toto,
tutu,
tata
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class-attribute-naming-style=any
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# Naming style matching correct class names.
class-naming-style=PascalCase
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const-naming-style=UPPER_CASE
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# Minimum line length for functions/classes that require docstrings, shorter
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docstring-min-length=-1
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function-naming-style=snake_case
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j,
k,
ex,
Run,
_
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# they will always be accepted
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# Naming style matching correct method names.
method-naming-style=snake_case
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# style.
#method-rgx=
# Naming style matching correct module names.
module-naming-style=snake_case
# Regular expression matching correct module names. Overrides module-naming-
# style.
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name-group=
# Regular expression which should only match function or class names that do
# not require a docstring.
no-docstring-rgx=^_
# List of decorators that produce properties, such as abc.abstractproperty. Add
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property-classes=abc.abstractproperty
# Naming style matching correct variable names.
variable-naming-style=snake_case
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#variable-rgx=
[FORMAT]
# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
expected-line-ending-format=
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ignore-long-lines=^\s*(# )?<?https?://\S+>?$
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# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
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# Maximum number of lines in a module.
max-module-lines=1000
# Allow the body of a class to be on the same line as the declaration if body
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single-line-class-stmt=no
# Allow the body of an if to be on the same line as the test if there is no
# else.
single-line-if-stmt=no
[MISCELLANEOUS]
# List of note tags to take in consideration, separated by a comma.
notes=FIXME,
XXX,
TODO
# Regular expression of note tags to take in consideration.
#notes-rgx=
[SPELLING]
# Limits count of emitted suggestions for spelling mistakes.
max-spelling-suggestions=4
# Spelling dictionary name. Available dictionaries: none. To make it work,
# install the 'python-enchant' package.
spelling-dict=
# List of comma separated words that should be considered directives if they
# appear and the beginning of a comment and should not be checked.
spelling-ignore-comment-directives=fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:
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spelling-ignore-words=
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spelling-private-dict-file=
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# --spelling-private-dict-file option) instead of raising a message.
spelling-store-unknown-words=no
[VARIABLES]
# List of additional names supposed to be defined in builtins. Remember that
# you should avoid defining new builtins when possible.
additional-builtins=
# Tells whether unused global variables should be treated as a violation.
allow-global-unused-variables=yes
# List of names allowed to shadow builtins
allowed-redefined-builtins=
# List of strings which can identify a callback function by name. A callback
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callbacks=cb_,
_cb
# A regular expression matching the name of dummy variables (i.e. expected to
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# Argument names that match this expression will be ignored. Default to name
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ignored-argument-names=_.*|^ignored_|^unused_
# Tells whether we should check for unused import in __init__ files.
init-import=no
# List of qualified module names which can have objects that can redefine
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redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io
[LOGGING]
# The type of string formatting that logging methods do. `old` means using %
# formatting, `new` is for `{}` formatting.
logging-format-style=old
# Logging modules to check that the string format arguments are in logging
# function parameter format.
logging-modules=logging
[TYPECHECK]
# List of decorators that produce context managers, such as
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contextmanager-decorators=contextlib.contextmanager
# List of members which are set dynamically and missed by pylint inference
# system, and so shouldn't trigger E1101 when accessed. Python regular
# expressions are accepted.
generated-members=
# Tells whether missing members accessed in mixin class should be ignored. A
# mixin class is detected if its name ends with "mixin" (case insensitive).
ignore-mixin-members=yes
# Tells whether to warn about missing members when the owner of the attribute
# is inferred to be None.
ignore-none=yes
# This flag controls whether pylint should warn about no-member and similar
# checks whenever an opaque object is returned when inferring. The inference
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# that case, it might be useful to still emit no-member and other checks for
# the rest of the inferred objects.
ignore-on-opaque-inference=yes
# List of class names for which member attributes should not be checked (useful
# for classes with dynamically set attributes). This supports the use of
# qualified names.
ignored-classes=optparse.Values,thread._local,_thread._local
# List of module names for which member attributes should not be checked
# (useful for modules/projects where namespaces are manipulated during runtime
# and thus existing member attributes cannot be deduced by static analysis). It
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ignored-modules=
# Show a hint with possible names when a member name was not found. The aspect
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[CLASSES]
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defining-attr-methods=__init__,
__new__,
setUp,
__post_init__
# List of member names, which should be excluded from the protected access
# warning.
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_fields,
_replace,
_source,
_make
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valid-classmethod-first-arg=cls
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[DESIGN]
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analyse-fallback-blocks=no
# Deprecated modules which should not be used, separated by a comma.
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# Output a graph (.gv or any supported image format) of external dependencies
# to the given file (report RP0402 must not be disabled).
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# Output a graph (.gv or any supported image format) of all (i.e. internal and
# external) dependencies to the given file (report RP0402 must not be
# disabled).
import-graph=
# Output a graph (.gv or any supported image format) of internal dependencies
# to the given file (report RP0402 must not be disabled).
int-import-graph=
# Force import order to recognize a module as part of the standard
# compatibility libraries.
known-standard-library=
# Force import order to recognize a module as part of a third party library.
known-third-party=enchant
# Couples of modules and preferred modules, separated by a comma.
preferred-modules=
[EXCEPTIONS]
# Exceptions that will emit a warning when being caught. Defaults to
# "BaseException, Exception".
overgeneral-exceptions=BaseException,
Exception