25f35c7d0e
This new FW is build on the same codebasse than the actual InfiniTime. Only the display task is different (this allows to remove lvgl from the recovery fw, which is very heavy). CMake builds and docker have been modified accordingly. Note than the fw is converted into an image and then into a DFU in the cmake build (previously, it was only done in the
131 lines
4.5 KiB
Python
131 lines
4.5 KiB
Python
#! /usr/bin/env python3
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#
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# Copyright 2017 Linaro Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Assemble multiple images into a single image that can be flashed on the device.
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"""
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import argparse
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import errno
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import io
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import re
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import os.path
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import sys
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ZEPHYR_BASE = os.getenv("ZEPHYR_BASE")
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if not ZEPHYR_BASE:
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sys.exit("$ZEPHYR_BASE environment variable undefined")
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sys.path.insert(0, os.path.join(ZEPHYR_BASE, "scripts", "dts"))
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import edtlib
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def same_keys(a, b):
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"""Determine if the dicts a and b have the same keys in them"""
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for ak in a.keys():
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if ak not in b:
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return False
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for bk in b.keys():
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if bk not in a:
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return False
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return True
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offset_re = re.compile(r"^#define DT_FLASH_AREA_([0-9A-Z_]+)_OFFSET(_0)?\s+(0x[0-9a-fA-F]+|[0-9]+)$")
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size_re = re.compile(r"^#define DT_FLASH_AREA_([0-9A-Z_]+)_SIZE(_0)?\s+(0x[0-9a-fA-F]+|[0-9]+)$")
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class Assembly():
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def __init__(self, output, bootdir, edt):
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self.find_slots(edt)
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try:
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os.unlink(output)
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except OSError as e:
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if e.errno != errno.ENOENT:
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raise
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self.output = output
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def find_slots(self, edt):
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offsets = {}
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sizes = {}
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part_nodes = edt.compat2nodes["fixed-partitions"]
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for node in part_nodes:
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for child in node.children.values():
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if "label" in child.props:
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label = child.props["label"].val
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offsets[label] = child.regs[0].addr
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sizes[label] = child.regs[0].size
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if not same_keys(offsets, sizes):
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raise Exception("Inconsistent data in devicetree.h")
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# We care about the mcuboot, image-0, and image-1 partitions.
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if 'mcuboot' not in offsets:
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raise Exception("Board partition table does not have mcuboot partition")
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if 'image-0' not in offsets:
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raise Exception("Board partition table does not have image-0 partition")
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if 'image-1' not in offsets:
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raise Exception("Board partition table does not have image-1 partition")
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self.offsets = offsets
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self.sizes = sizes
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def add_image(self, source, partition):
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with open(self.output, 'ab') as ofd:
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pos = ofd.tell()
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print("partition {}, pos={}, offset={}".format(partition, pos, self.offsets[partition]))
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if pos > self.offsets[partition]:
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raise Exception("Partitions not in order, unsupported")
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if pos < self.offsets[partition]:
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buf = b'\xFF' * (self.offsets[partition] - pos)
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ofd.write(buf)
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with open(source, 'rb') as rfd:
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ibuf = rfd.read()
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if len(ibuf) > self.sizes[partition]:
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raise Exception("Image {} is too large for partition".format(source))
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ofd.write(ibuf)
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('-b', '--bootdir', required=True,
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help='Directory of built bootloader')
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parser.add_argument('-p', '--primary', required=True,
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help='Signed image file for primary image')
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parser.add_argument('-s', '--secondary',
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help='Signed image file for secondary image')
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parser.add_argument('-o', '--output', required=True,
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help='Filename to write full image to')
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args = parser.parse_args()
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# Extract board name from path
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board = os.path.split(os.path.split(args.bootdir)[0])[1]
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dts_path = os.path.join(args.bootdir, "zephyr", board + ".dts.pre.tmp")
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edt = edtlib.EDT(dts_path, [os.path.join(ZEPHYR_BASE, "dts", "bindings")],
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warn_reg_unit_address_mismatch=False)
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output = Assembly(args.output, args.bootdir, edt)
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output.add_image(os.path.join(args.bootdir, 'zephyr', 'zephyr.bin'), 'mcuboot')
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output.add_image(args.primary, "image-0")
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if args.secondary is not None:
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output.add_image(args.secondary, "image-1")
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if __name__ == '__main__':
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main()
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