firmware: introduce PYOPT, use it consistently in mpy-cross and in runtime, set it to 1 by default

SConscript.firmware

@@ -7,6 +7,8 @@ CPPPATH_MOD = []
 CPPDEFINES_MOD = []
 SOURCE_MOD = []
 
+PYOPT = '1'
+
 # modtrezorconfig
 SOURCE_MOD += [
     'embed/extmod/modtrezorconfig/modtrezorconfig.c',
@@ -286,7 +288,7 @@ SOURCE_PY.extend(Glob('src/*/*/*/*.py'))
 SOURCE_PY.extend(Glob('src/*/*/*/*/*.py'))
 SOURCE_PY_DIR = 'src/'
 
-env = Environment(ENV=os.environ, CFLAGS='%s -DPRODUCTION=%s' % (ARGUMENTS.get('CFLAGS', ''), ARGUMENTS.get('PRODUCTION', '0')))
+env = Environment(ENV=os.environ, CFLAGS='%s -DPRODUCTION=%s -DPYOPT=%s' % (ARGUMENTS.get('CFLAGS', ''), ARGUMENTS.get('PRODUCTION', '0'), PYOPT))
 
 env.Tool('micropython')
 
@@ -341,7 +343,7 @@ env.Replace(
     MAKEQSTRDATA='$PYTHON vendor/micropython/py/makeqstrdata.py',
     MAKEVERSIONHDR='$PYTHON vendor/micropython/py/makeversionhdr.py',
     MPY_TOOL='$PYTHON vendor/micropython/tools/mpy-tool.py',
-    MPY_CROSS='vendor/micropython/mpy-cross/mpy-cross',
+    MPY_CROSS='vendor/micropython/mpy-cross/mpy-cross -O' + PYOPT
 )
 
 #

embed/firmware/main.c

@@ -45,6 +45,9 @@ int main(void)
     mp_obj_list_init(mp_sys_path, 0);
     mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
 
+    // Set optimization level
+    MP_STATE_VM(mp_optimise_value) = PYOPT;
+
     // Execute the main script
     printf("CORE: Executing main script\n");
     pyexec_frozen_module("main.py");