SConscript.kernel

# pylint: disable=E0602
# fmt: off

import os
import tools, models

BITCOIN_ONLY = ARGUMENTS.get('BITCOIN_ONLY', '0')
PRODUCTION = ARGUMENTS.get('PRODUCTION', '0') == '1'
BOOTLOADER_QA = ARGUMENTS.get('BOOTLOADER_QA', '0') == '1'
BOOTLOADER_DEVEL = ARGUMENTS.get('BOOTLOADER_DEVEL', '0') == '1'
EVERYTHING = BITCOIN_ONLY != '1'
TREZOR_MODEL = ARGUMENTS.get('TREZOR_MODEL', 'T2T1')
CMAKELISTS = int(ARGUMENTS.get('CMAKELISTS', 0))
PYOPT = ARGUMENTS.get('PYOPT', '1')
DISABLE_OPTIGA = ARGUMENTS.get('DISABLE_OPTIGA', '0') == '1'
HW_REVISION = ARGUMENTS.get('HW_REVISION', None)
THP = ARGUMENTS.get('THP', '0') == '1' # Trezor-Host Protocol

STORAGE_INSECURE_TESTING_MODE = ARGUMENTS.get('STORAGE_INSECURE_TESTING_MODE', '0') == '1'
if STORAGE_INSECURE_TESTING_MODE and PRODUCTION:
    raise RuntimeError("STORAGE_INSECURE_TESTING_MODE cannot be used in production")
if STORAGE_INSECURE_TESTING_MODE:
    DISABLE_OPTIGA = True
    PYOPT = "0"

FEATURE_FLAGS = {
    "RDI": True,
    "SECP256K1_ZKP": True,  # required for trezor.crypto.curve.bip340 (BIP340/Taproot)
    "SYSTEM_VIEW": False,
    "AES_GCM": True,
}

FEATURES_WANTED = ["input", "sd_card", "rgb_led", "dma2d", "consumption_mask", "usb" ,"optiga", "haptic", "ble", "tropic"]
if DISABLE_OPTIGA:
    # TODO use PYOPT instead of PRODUCTION, same as in firmware, blocked on #4253
    if PRODUCTION:
        raise RuntimeError("DISABLE_OPTIGA requires non-production build")
    FEATURES_WANTED.remove("optiga")

CCFLAGS_MOD = ''
CPPPATH_MOD = []
CPPDEFINES_MOD = []
SOURCE_MOD = []
SOURCE_MOD_CRYPTO = []
CPPDEFINES_HAL = []
SOURCE_HAL = []
PATH_HAL = []

FROZEN = True

# modtrezorconfig
CPPPATH_MOD += [
    'embed/upymod/modtrezorconfig',
    'vendor/trezor-storage',
    'vendor/micropython/lib/uzlib',
]
SOURCE_MOD += [
#    'embed/upymod/modtrezorconfig/modtrezorconfig.c',
    'vendor/trezor-storage/norcow.c',
    'vendor/trezor-storage/storage.c',
    'vendor/trezor-storage/storage_utils.c',
    'vendor/trezor-storage/flash_area.c',
]

# modtrezorcrypto
CCFLAGS_MOD += '-Wno-sequence-point '
CPPPATH_MOD += [
    'vendor/trezor-crypto',
]
CPPDEFINES_MOD += [
    'KERNEL_MODE',
    'SYSCALL_DISPATCH',
    'AES_128',
    'AES_192',
    ('USE_BIP32_CACHE', '0'),
    ('USE_KECCAK', '1'),
    ('USE_ETHEREUM', '1' if EVERYTHING else '0'),
    ('USE_MONERO', '1' if EVERYTHING else '0'),
    ('USE_CARDANO', '1' if EVERYTHING else '0'),
    ('USE_NEM', '1' if (EVERYTHING and TREZOR_MODEL == "T2T1") else '0'),
    ('USE_EOS', '1' if (EVERYTHING and TREZOR_MODEL == "T2T1") else '0'),
]
SOURCE_MOD_CRYPTO += [
    'vendor/trezor-crypto/address.c',
    'vendor/trezor-crypto/aes/aes_modes.c',
    'vendor/trezor-crypto/aes/aesccm.c',
    'vendor/trezor-crypto/aes/aescrypt.c',
    'vendor/trezor-crypto/aes/aeskey.c',
    'vendor/trezor-crypto/aes/aestab.c',
    'vendor/trezor-crypto/base32.c',
    'vendor/trezor-crypto/base58.c',
    'vendor/trezor-crypto/bignum.c',
    'vendor/trezor-crypto/bip32.c',
    'vendor/trezor-crypto/bip39.c',
    'vendor/trezor-crypto/bip39_english.c',
    'vendor/trezor-crypto/blake256.c',
    'vendor/trezor-crypto/blake2b.c',
    'vendor/trezor-crypto/blake2s.c',
    'vendor/trezor-crypto/buffer.c',
    'vendor/trezor-crypto/chacha20poly1305/chacha20poly1305.c',
    'vendor/trezor-crypto/chacha20poly1305/chacha_merged.c',
    'vendor/trezor-crypto/chacha20poly1305/poly1305-donna.c',
    'vendor/trezor-crypto/chacha20poly1305/rfc7539.c',
    'vendor/trezor-crypto/chacha_drbg.c',
    'vendor/trezor-crypto/curves.c',
    'vendor/trezor-crypto/der.c',
    'vendor/trezor-crypto/ecdsa.c',
    'vendor/trezor-crypto/ed25519-donna/curve25519-donna-32bit.c',
    'vendor/trezor-crypto/ed25519-donna/curve25519-donna-helpers.c',
    'vendor/trezor-crypto/ed25519-donna/curve25519-donna-scalarmult-base.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519-donna-32bit-tables.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519-donna-basepoint-table.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519-donna-impl-base.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519-keccak.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519-sha3.c',
    'vendor/trezor-crypto/ed25519-donna/ed25519.c',
    'vendor/trezor-crypto/ed25519-donna/modm-donna-32bit.c',
    'vendor/trezor-crypto/groestl.c',
    'vendor/trezor-crypto/hasher.c',
    'vendor/trezor-crypto/hmac.c',
    'vendor/trezor-crypto/hmac_drbg.c',
    'vendor/trezor-crypto/memzero.c',
    'vendor/trezor-crypto/nem.c',
    'vendor/trezor-crypto/nist256p1.c',
    'vendor/trezor-crypto/pbkdf2.c',
    'vendor/trezor-crypto/rand.c',
    'vendor/trezor-crypto/rfc6979.c',
    'vendor/trezor-crypto/ripemd160.c',
    'vendor/trezor-crypto/secp256k1.c',
    'vendor/trezor-crypto/segwit_addr.c',
    'vendor/trezor-crypto/sha2.c',
    'vendor/trezor-crypto/sha3.c',
    'vendor/trezor-crypto/shamir.c',
    'vendor/trezor-crypto/slip39.c',
    'vendor/trezor-crypto/slip39_english.c',
    'vendor/trezor-crypto/tls_prf.c',
]
if EVERYTHING:
    SOURCE_MOD_CRYPTO += [
        'vendor/trezor-crypto/cardano.c',
        'vendor/trezor-crypto/monero/base58.c',
        'vendor/trezor-crypto/monero/serialize.c',
        'vendor/trezor-crypto/monero/xmr.c',
    ]

# libsecp256k1-zkp
if FEATURE_FLAGS["SECP256K1_ZKP"]:
    CPPPATH_MOD += [
        'vendor/secp256k1-zkp',
        'vendor/secp256k1-zkp/src',
        'vendor/secp256k1-zkp/include',
    ]
    CPPDEFINES_MOD += [
        'USE_SECP256K1_ZKP',
        'USE_SECP256K1_ZKP_ECDSA',
        ('SECP256K1_CONTEXT_SIZE', '180'),
        'USE_ASM_ARM',
        'USE_EXTERNAL_ASM',
        'USE_EXTERNAL_DEFAULT_CALLBACKS',
        ('ECMULT_GEN_PREC_BITS', '2'),
        ('ECMULT_WINDOW_SIZE', '2'),
        'ENABLE_MODULE_GENERATOR',
        'ENABLE_MODULE_RECOVERY',
        'ENABLE_MODULE_SCHNORRSIG',
        'ENABLE_MODULE_EXTRAKEYS',
        'ENABLE_MODULE_ECDH',
    ]
    SOURCE_MOD_SECP256K1_ZKP = [
        'vendor/secp256k1-zkp/src/secp256k1.c',
        'vendor/secp256k1-zkp/src/precomputed_ecmult.c',
        'vendor/secp256k1-zkp/src/precomputed_ecmult_gen.c',
        'vendor/secp256k1-zkp/src/asm/field_10x26_arm.s'
    ]
    SOURCE_MOD_CRYPTO += [
        'vendor/trezor-crypto/zkp_context.c',
        'vendor/trezor-crypto/zkp_ecdsa.c',
        'vendor/trezor-crypto/zkp_bip340.c',
    ]

SOURCE_MOD += [
    'embed/gfx/bitblt/gfx_bitblt.c',
    'embed/gfx/bitblt/gfx_bitblt_rgb565.c',
    'embed/gfx/bitblt/gfx_bitblt_rgba8888.c',
    'embed/gfx/bitblt/gfx_bitblt_mono8.c',
    'embed/gfx/fonts/font_bitmap.c',
    'embed/gfx/gfx_color.c',
    'embed/gfx/gfx_draw.c',
    'embed/gfx/terminal.c',
    'embed/util/bl_check/bl_check.c',
    'embed/util/translations/translations.c',
    'embed/util/image/image.c',
    'embed/util/rsod/rsod.c',
    'embed/rtl/error_handling.c',
    'embed/rtl/mini_printf.c',
    'embed/upymod/modtrezorcrypto/rand.c',
    'vendor/micropython/lib/uzlib/adler32.c',
    'vendor/micropython/lib/uzlib/crc32.c',
    'vendor/micropython/lib/uzlib/tinflate.c',
]

CPPDEFINES_MOD += [
    'TRANSLATIONS',
    'RSOD_IN_COREAPP',
]

if FEATURE_FLAGS["RDI"]:
    CPPDEFINES_MOD += ['RDI']

if FEATURE_FLAGS["SYSTEM_VIEW"]:
    SOURCE_MOD += [
        'embed/sys/systemview/stm32/config/SEGGER_SYSVIEW_Config_NoOS.c',
        'embed/sys/systemview/stm32/segger/SEGGER_SYSVIEW.c',
        'embed/sys/systemview/stm32/segger/SEGGER_RTT.c',
        'embed/sys/systemview/stm32/segger/SEGGER_RTT_ASM_ARMv7M.S',
        'embed/sys/systemview/stm32/segger/Syscalls/SEGGER_RTT_Syscalls_GCC.c',
        'embed/sys/systemview/systemview.c',
    ]
    CPPPATH_MOD += [
        'embed/sys/systemview/inc',
        'embed/sys/systemview/stm32/config',
        'embed/sys/systemview/stm32/segger',
    ]
    CPPDEFINES_MOD += ['SYSTEM_VIEW']
    CCFLAGS_MOD += '-DSYSTEM_VIEW '

TRANSLATION_DATA = [
    "translations/en.json",
    "translations/order.json",
]

if THP:
    CPPDEFINES_MOD += ['USE_THP']
    SOURCE_MOD += [
        'vendor/trezor-crypto/elligator2.c',
    ]

if STORAGE_INSECURE_TESTING_MODE:
    CPPDEFINES_MOD += ['STORAGE_INSECURE_TESTING_MODE']

env = Environment(
    ENV=os.environ,
    CFLAGS=f"{ARGUMENTS.get('CFLAGS', '')} -DPRODUCTION={int(PRODUCTION)} -DPYOPT={PYOPT} -DBOOTLOADER_QA={int(BOOTLOADER_QA)} -DBITCOIN_ONLY={BITCOIN_ONLY} -USCM_REVISION_INIT",
    CPPDEFINES_IMPLICIT=[],
    CPPDEFPREFIX="-D'",
    CPPDEFSUFFIX="'",
)

FEATURES_AVAILABLE = models.configure_board(TREZOR_MODEL, HW_REVISION, FEATURES_WANTED, env, CPPDEFINES_HAL, SOURCE_HAL, PATH_HAL)

FEATURE_FLAGS["AES_GCM"] = FEATURE_FLAGS["AES_GCM"] or "tropic" in FEATURES_AVAILABLE

# AES-GCM
if FEATURE_FLAGS["AES_GCM"]:
    CPPDEFINES_MOD += [
        'USE_AES_GCM',
        'AES_VAR',
    ]
    SOURCE_MOD_CRYPTO += [
        'vendor/trezor-crypto/aes/gf128mul.c',
        'vendor/trezor-crypto/aes/aesgcm.c',
    ]

SOURCE_FIRMWARE = [
    'embed/projects/kernel/main.c',
]

if 'sd_card' in FEATURES_AVAILABLE:
    SDCARD = True
else:
    SDCARD = False

env.Replace(
    CAT='cat',
    DD='dd',
    CP='cp',
    SED='sed',
    AS='arm-none-eabi-as',
    AR='arm-none-eabi-ar',
    CC='arm-none-eabi-gcc',
    LINK='arm-none-eabi-gcc',
    SIZE='arm-none-eabi-size',
    STRIP='arm-none-eabi-strip',
    OBJCOPY='arm-none-eabi-objcopy', )

env.Replace(
    TREZOR_MODEL=TREZOR_MODEL,)

ALLPATHS = [
        '.',
        'embed/projects/firmware',
        'embed/rtl/inc',
        'embed/models',
        'embed/gfx/inc',
        'embed/sys/bsp/inc',
        'embed/util/bl_check/inc',
        'embed/util/image/inc',
        'embed/util/rsod/inc',
        'embed/util/translations/inc',
    ] + CPPPATH_MOD + PATH_HAL

env.Replace(
    COPT=env.get('ENV').get('OPTIMIZE', '-Os'),
    CCFLAGS='$COPT '
    '-g3 '
    '-nostdlib '
    '-std=gnu11 -Wall -Werror -Wdouble-promotion -Wpointer-arith -Wno-missing-braces -fno-common '
    '-fsingle-precision-constant -fdata-sections -ffunction-sections '
    '-ffreestanding '
    '-fstack-protector-all '
    +  env.get('ENV')["CPU_CCFLAGS"] + CCFLAGS_MOD,
    LINKFLAGS='-T build/kernel/memory.ld -Wl,--gc-sections -Wl,--print-memory-usage '
        ' -Wl,-Map=build/kernel/kernel.map -Wl,--warn-common -Wl,--undefined=__errno',
    CPPPATH=ALLPATHS,
    CPPDEFINES=[
        'KERNEL',
        'TREZOR_MODEL_'+TREZOR_MODEL,
        'USE_HAL_DRIVER',
        'ARM_USER_MODE',
    ] + CPPDEFINES_MOD + CPPDEFINES_HAL,
    ASFLAGS=env.get('ENV')['CPU_ASFLAGS'],
    ASPPFLAGS='$CFLAGS $CCFLAGS',
    )

env.Replace(
    HEADERTOOL='headertool',
    PYTHON='python',
    MAKECMAKELISTS='$PYTHON tools/make_cmakelists.py',
)


#
# Program objects
#

source_files = SOURCE_MOD + SOURCE_MOD_CRYPTO + SOURCE_FIRMWARE + SOURCE_HAL
obj_program = []
obj_program.extend(env.Object(source=SOURCE_MOD))
obj_program.extend(env.Object(source=SOURCE_MOD_CRYPTO, CCFLAGS='$CCFLAGS -ftrivial-auto-var-init=zero'))
if FEATURE_FLAGS["SECP256K1_ZKP"]:
    obj_program.extend(env.Object(source=SOURCE_MOD_SECP256K1_ZKP, CCFLAGS='$CCFLAGS -Wno-unused-function'))
    source_files.extend(SOURCE_MOD_SECP256K1_ZKP)
obj_program.extend(env.Object(source=SOURCE_FIRMWARE))
obj_program.extend(env.Object(source=SOURCE_HAL))

env.Replace(
    ALLSOURCES=source_files,
    ALLDEFS=tools.get_defs_for_cmake(env['CPPDEFINES'] + env['CPPDEFINES_IMPLICIT'] + [f"PRODUCTION={int(PRODUCTION)}", f"BOOTLOADER_QA={int(BOOTLOADER_QA)}", f"PYOPT={PYOPT}", f"BITCOIN_ONLY={BITCOIN_ONLY}"]))


cmake_gen = env.Command(
    target='CMakeLists.txt',
    source='',
    action='$MAKECMAKELISTS --sources $ALLSOURCES --dirs $CPPPATH --defs $ALLDEFS',
)

BOOTLOADER_SUFFIX = TREZOR_MODEL
if BOOTLOADER_QA:
    BOOTLOADER_SUFFIX += '_qa'

# select vendor header
if BOOTLOADER_QA or BOOTLOADER_DEVEL:
    vendor = "dev_DO_NOT_SIGN_signed_dev"
elif not PRODUCTION:
    vendor = "unsafe_signed_prod"
else:
    if TREZOR_MODEL in ('T2T1',):
        vendor = "satoshilabs_signed_prod"
    elif BITCOIN_ONLY == '1':
        vendor = "trezor_btconly_signed_prod"
    else:
        vendor = "trezor_signed_prod"

VENDORHEADER = f'embed/models/{TREZOR_MODEL}/vendorheader/vendorheader_{vendor}.bin'


obj_program.extend(
    env.Command(
        target='embed/projects/kernel/vendorheader.o',
        source=VENDORHEADER,
        action='$OBJCOPY -I binary -O elf32-littlearm -B arm'
        ' --rename-section .data=.vendorheader,alloc,load,readonly,contents'
        ' $SOURCE $TARGET', ))

tools.embed_compressed_binary(
        obj_program,
        env,
        'bootloader',
        'embed/projects/bootloaders/bootloader.o',
        f'embed/models/{TREZOR_MODEL}/bootloaders/bootloader_{BOOTLOADER_SUFFIX}.bin',
        'kernel',
        'bootloader',
        )

linkerscript_gen = env.Command(
    target='memory.ld',
    source=[f'embed/models/{TREZOR_MODEL}/memory.ld', env.get('ENV')['LINKER_SCRIPT'].format(target='kernel')],
    action='$CAT $SOURCES > $TARGET',
)

program_elf = env.Command(
    target='kernel.elf',
    source=obj_program,
    action=
    '$LINK -o $TARGET $CCFLAGS $CFLAGS $SOURCES $LINKFLAGS -lc_nano -lm -lgcc',
)

env.Depends(program_elf, linkerscript_gen)

if CMAKELISTS != 0:
    env.Depends(program_elf, cmake_gen)

BINARY_NAME = f"build/kernel/kernel-{TREZOR_MODEL}"
if not EVERYTHING:
    BINARY_NAME += "-btconly"
BINARY_NAME += "-" + tools.get_version('embed/projects/kernel/version.h')
BINARY_NAME += "-" + tools.get_git_revision_short_hash()
BINARY_NAME += "-dirty" if tools.get_git_modified() else ""
BINARY_NAME += ".bin"

action_bin=[
    '$OBJCOPY -O binary -j .flash -j .uflash  -j .data -j .confidential $SOURCE ${TARGET}',
    '$CP $TARGET ' + BINARY_NAME,
]

if STORAGE_INSECURE_TESTING_MODE:
    INSECURE_TESTING_MODE_STR = """
#########################################################
#   STORAGE_INSECURE_TESTING_MODE enabled, DO NOT USE   #
#########################################################
"""
    action_bin.append(INSECURE_TESTING_MODE_STR)

program_bin = env.Command(
    target='kernel.bin',
    source=program_elf,
    action=action_bin,
)