main: unlock storage after boot

src/boot.py

@@ -0,0 +1,27 @@
+from trezor import config
+from trezor import loop
+from trezor import ui
+
+from apps.common.request_pin import request_pin
+
+
+async def unlock_layout():
+    while True:
+        if config.has_pin():
+            pin = await request_pin()
+        else:
+            pin = ''
+        if config.unlock(pin):
+            return
+        else:
+            await unlock_failed()
+
+
+async def unlock_failed():
+    pass
+
+
+config.init()
+ui.display.backlight(ui.BACKLIGHT_DIM)
+loop.schedule(unlock_layout())
+loop.run()

src/main.py

@@ -1,12 +1,11 @@
-from trezor import config
+import boot
+
 from trezor import io
 from trezor import log
 from trezor import loop
 from trezor import wire
 from trezor import workflow
 
-config.init()
-
 log.level = log.DEBUG
 
 # initialize the USB stack
@@ -102,7 +101,6 @@ usb.add(usb_vcp)
 usb.add(usb_u2f)
 
 # load applications
-from apps.common import storage
 if __debug__:
     from apps import debug
 from apps import homescreen

src/trezor/loop.py

@@ -86,7 +86,7 @@ def run():
 
     task_entry = [0, 0, 0]  # deadline, task, value
     msg_entry = [0, 0]  # iface | flags, value
-    while True:
+    while _queue or _paused:
         # compute the maximum amount of time we can wait for a message
         if _queue:
             delay = utime.ticks_diff(_queue.peektime(), utime.ticks_us())