scripts/assemble: Rework to use EDT library to get devicetree data

import io

import re

import os.path

import sys

ZEPHYR_BASE = os.getenv("ZEPHYR_BASE")

if not ZEPHYR_BASE:

    sys.exit("$ZEPHYR_BASE environment variable undefined")

sys.path.insert(0, os.path.join(ZEPHYR_BASE, "scripts", "dts"))

import edtlib

def same_keys(a, b):

    """Determine if the dicts a and b have the same keys in them"""

size_re   = re.compile(r"^#define DT_FLASH_AREA_([0-9A-Z_]+)_SIZE(_0)?\s+(0x[0-9a-fA-F]+|[0-9]+)$")

class Assembly():

    def __init__(self, output, bootdir):

        self.find_slots(bootdir)

    def __init__(self, output, bootdir, edt):

        self.find_slots(edt)

        try:

            os.unlink(output)

        except OSError as e:

                raise

        self.output = output

    def find_slots(self, bootdir):

    def find_slots(self, edt):

        offsets = {}

        sizes = {}

        with open(os.path.join(bootdir, 'zephyr', 'include', 'generated', 'devicetree_legacy_unfixed.h'), 'r') as fd:

            for line in fd:

                m = offset_re.match(line)

                if m is not None:

                    offsets[m.group(1)] = int(m.group(3), 0)

                m = size_re.match(line)

                if m is not None:

                    sizes[m.group(1)] = int(m.group(3), 0)

        part_nodes = edt.compat2nodes["fixed-partitions"]

        for node in part_nodes:

            for child in node.children.values():

                if "label" in child.props:

                    label = child.props["label"].val

                    offsets[label] = child.regs[0].addr

                    sizes[label] = child.regs[0].size

        if not same_keys(offsets, sizes):

            raise Exception("Inconsistent data in devicetree.h")

        # We care about the MCUBOOT, IMAGE_0, and IMAGE_1 partitions.

        if 'MCUBOOT' not in offsets:

        # We care about the mcuboot, image-0, and image-1 partitions.

        if 'mcuboot' not in offsets:

            raise Exception("Board partition table does not have mcuboot partition")

        if 'IMAGE_0' not in offsets:

        if 'image-0' not in offsets:

            raise Exception("Board partition table does not have image-0 partition")

        if 'IMAGE_1' not in offsets:

        if 'image-1' not in offsets:

            raise Exception("Board partition table does not have image-1 partition")

        self.offsets = offsets

            help='Filename to write full image to')

    args = parser.parse_args()

    output = Assembly(args.output, args.bootdir)

    output.add_image(os.path.join(args.bootdir, 'zephyr', 'zephyr.bin'), 'MCUBOOT')

    output.add_image(args.primary, "IMAGE_0")

    # Extract board name from path

    board = os.path.split(os.path.split(args.bootdir)[0])[1]

    dts_path = os.path.join(args.bootdir, "zephyr", board + ".dts.pre.tmp")

    edt = edtlib.EDT(dts_path, [os.path.join(ZEPHYR_BASE, "dts", "bindings")],

            warn_reg_unit_address_mismatch=False)

    output = Assembly(args.output, args.bootdir, edt)

    output.add_image(os.path.join(args.bootdir, 'zephyr', 'zephyr.bin'), 'mcuboot')

    output.add_image(args.primary, "image-0")

    if args.secondary is not None:

        output.add_image(args.secondary, "IMAGE_1")

        output.add_image(args.secondary, "image-1")

if __name__ == '__main__':

    main()