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Add teensy_secure support #98

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Add teensy_secure support #98

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331917c
Add teensy_secure support
ssilverman Nov 8, 2022
55e9efa
Add the ability to specify an encryption key via custom_secure_key
ssilverman Nov 24, 2022
84cfc66
Change encrypt message to include which key is being used
ssilverman Dec 26, 2022
589c151
Choose the correct board name for teensy_secure
ssilverman Jun 19, 2023
2d276ec
Use GetProjectOption
ivankravets Feb 3, 2025
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34 changes: 33 additions & 1 deletion builder/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,8 @@
OBJCOPY="arm-none-eabi-objcopy",
RANLIB="arm-none-eabi-gcc-ranlib",
SIZETOOL="arm-none-eabi-size",
SIZEPRINTCMD="$SIZETOOL -B -d $SOURCES"
SIZEPRINTCMD="$SIZETOOL -B -d $SOURCES",
TEENSYSECURE="teensy_secure"
)

env.Append(
Expand Down Expand Up @@ -127,6 +128,35 @@
)
)

if build_core == "teensy4":
# Get the key and default to an empty string
custom_secure_key = env.GetProjectOption("custom_secure_key", "")
if custom_secure_key:
encrypt_message = f"Encrypting $TARGET with key at {custom_secure_key}"
else:
encrypt_message = "Encrypting $TARGET with default key"

# Choose the correct board name for teensy_secure
if board_config.id == "teensymm":
board_name = "TEENSY_MICROMOD"
else:
board_name = board_config.id.upper()

env.Append(
BUILDERS=dict(
HexToEhex=Builder(
action=env.VerboseAction(" ".join([
"$TEENSYSECURE",
"encrypthex",
board_name,
"$SOURCES",
custom_secure_key
]), encrypt_message),
suffix=".ehex"
)
)
)

if not env.get("PIOFRAMEWORK"):
env.SConscript("frameworks/_bare_arm.py")

Expand Down Expand Up @@ -174,6 +204,8 @@ def teensy_check_upload_size(_, target, source, env):
else:
target_elf = env.BuildProgram()
target_firm = env.ElfToHex(join("$BUILD_DIR", "${PROGNAME}"), target_elf)
if build_core == "teensy4":
target_firm = env.HexToEhex(join("$BUILD_DIR", "${PROGNAME}"), target_firm)
env.Depends(target_firm, "checkprogsize")

AlwaysBuild(env.Alias("nobuild", target_firm))
Expand Down