feat(core/rust): bootloader compilation with rust

core/SConscript.bootloader

@@ -233,6 +233,50 @@ cmake_gen = env.Command(
 )
 
 
+#
+# Rust library
+#
+
+RUST_PROFILE = 'release'
+RUST_LIB = 'trezor_lib'
+RUST_LIBDIR = f'build/bootloader/rust/{RUST_TARGET}/{RUST_PROFILE}'
+RUST_LIBPATH = f'{RUST_LIBDIR}/lib{RUST_LIB}.a'
+
+def cargo_build():
+    # Determine the profile build flags.
+    if RUST_PROFILE == 'release':
+        profile = '--release'
+    else:
+        profile = ''
+    if TREZOR_MODEL in ("1",):
+        features = ["model_t1"]
+    elif TREZOR_MODEL in ("R",):
+        features = ["model_tr"]
+    else:
+        features = ["model_tt"]
+    features.append("bitcoin_only")
+    features.append("ui")
+    features.append("bootloader")
+
+    cargo_opts = [
+        f'--target={RUST_TARGET}',
+        f'--target-dir=../../build/bootloader/rust',
+        '--no-default-features',
+        '--features ' + ','.join(features),
+        '-Z build-std=core',
+        '-Z build-std-features=panic_immediate_abort',
+    ]
+
+    return f'cd embed/rust; cargo build {profile} ' + ' '.join(cargo_opts)
+
+rust = env.Command(
+    target=RUST_LIBPATH,
+    source='',
+    action=cargo_build(), )
+
+env.Append(LINKFLAGS=f' -L{RUST_LIBDIR}')
+env.Append(LINKFLAGS=f' -l{RUST_LIB}')
+
 #
 # Program objects
 #
@@ -244,13 +288,16 @@ obj_program += env.Object(source=SOURCE_NANOPB)
 obj_program += env.Object(source=SOURCE_STMHAL)
 obj_program += env.Object(source=SOURCE_TREZORHAL)
 
+
 program_elf = env.Command(
     target='bootloader.elf',
     source=obj_program,
     action=
-    '$LINK -o $TARGET $CCFLAGS $CFLAGS $LINKFLAGS $SOURCES -lc_nano -lgcc',
+    '$LINK -o $TARGET $CCFLAGS $CFLAGS $SOURCES $LINKFLAGS -lc_nano -lm -lgcc',
 )
 
+env.Depends(program_elf, rust)
+
 BINARY_NAME = f"build/bootloader/bootloader-{tools.get_model_identifier(TREZOR_MODEL)}"
 BINARY_NAME += "-" + tools.get_version('embed/bootloader/version.h')
 BINARY_NAME += "-" + tools.get_git_revision_short_hash()

core/embed/rust/Cargo.toml

@@ -15,6 +15,7 @@ protobuf = ["micropython"]
 ui = []
 dma2d = []
 ui_debug = []
+bootloader = []
 buttons = []
 touch = []
 clippy = []