fix(core/bootloader): fix ignoring disconnected touch in production mode

[no changelog]

core/embed/bootloader/main.c

@@ -377,17 +377,20 @@ int bootloader_main(void) {
  unit_variant_init();
 
 #ifdef USE_TOUCH
+ secbool touch_initialized = secfalse;
+ secbool allow_touchless_mode = secfalse;
 #ifdef TREZOR_MODEL_T3T1
  // on T3T1, tester needs to run without touch, so making an exception
  // until unit variant is written in OTP
- if (unit_variant_present()) {
- ensure(touch_init(), "Touch screen panel was not loaded properly.");
- } else {
- touch_init();
- }
-#else
- ensure(touch_init(), "Touch screen panel was not loaded properly.");
+ const secbool manufacturing_mode =
+ unit_variant_present() ? secfalse : sectrue;
+ allow_touchless_mode = manufacturing_mode;
+
 #endif
+ touch_initialized = touch_init();
+ if (allow_touchless_mode != sectrue) {
+ ensure(touch_initialized, "Touch screen panel was not loaded properly.");
+ }
 #endif
 
  ui_screen_boot_stage_1(false);
@@ -506,8 +509,10 @@ int bootloader_main(void) {
  if (firmware_present == sectrue && stay_in_bootloader != sectrue) {
  // Wait until the touch controller is ready
  // (on hardware this may take a while)
- while (touch_ready() != sectrue) {
- hal_delay(1);
+ if (touch_initialized != secfalse) {
+ while (touch_ready() != sectrue) {
+ hal_delay(1);
+ }
  }
 #ifdef TREZOR_EMULATOR
  hal_delay(500);