core: move base functions from "homescreen" app to "base"

core/SConscript.firmware

@@ -486,6 +486,7 @@ if FROZEN:
         ])
     )
 
+    SOURCE_PY.append(SOURCE_PY_DIR + 'apps/base.py')
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/common/*.py'))
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/common/*/*.py'))
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/debug/*.py'))

core/SConscript.unix

@@ -454,6 +454,7 @@ if FROZEN:
         ])
     )
 
+    SOURCE_PY.append(SOURCE_PY_DIR + 'apps/base.py')
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/common/*.py'))
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/common/*/*.py'))
     SOURCE_PY.extend(Glob(SOURCE_PY_DIR + 'apps/debug/*.py'))

core/src/main.py

@@ -15,7 +15,7 @@ usb.bus.open()
 
 def _boot_apps() -> None:
     # load applications
-    import apps.homescreen
+    import apps.base
     import apps.management
     import apps.bitcoin
     import apps.misc
@@ -37,7 +37,7 @@ def _boot_apps() -> None:
         import apps.debug
 
     # boot applications
-    apps.homescreen.boot()
+    apps.base.boot()
     apps.management.boot()
     apps.bitcoin.boot()
     apps.misc.boot()

core/tests/test_storage.cache.py

@@ -5,7 +5,7 @@ from storage import cache
 from trezor.messages.Initialize import Initialize
 from trezor.wire import DUMMY_CONTEXT
 
-from apps.homescreen import handle_Initialize
+from apps.base import handle_Initialize
 
 KEY = 99