trezor-firmware/core/site_scons/boards/discovery.py

from . import get_hw_model_as_number


def configure(env, features_wanted, defines, sources):
    features_available = []
    board = 'stm32f429i-disc1.h'
    display = 'ltdc.c'
    hw_model = get_hw_model_as_number('TDT1')
    hw_revision = 0

    defines += [f'TREZOR_BOARD=\\"boards/{board}\\"', ]
    defines += [f'HW_MODEL={hw_model}', ]
    defines += [f'HW_REVISION={hw_revision}', ]
    sources += [f'embed/trezorhal/displays/{display}', ]
    sources += ['embed/trezorhal/displays/ili9341_spi.c']
    sources += ['embed/trezorhal/sdram.c']

    if "input" in features_wanted:
        sources += ['embed/trezorhal/i2c.c', ]
        sources += ['embed/trezorhal/touch/touch.c', ]
        sources += ['embed/trezorhal/touch/stmpe811.c', ]
        features_available.append("touch")

    env.get('ENV')['TREZOR_BOARD'] = board

    return features_available