refactor(core): make homescreen max size model dependent

[no changelog]

core/embed/models/D001/model_D001.h

@@ -10,6 +10,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_D001
 #define MODEL_USB_MANUFACTURER "Trezor DIY"
 #define MODEL_USB_PRODUCT MODEL_FULL_NAME
+#define MODEL_HOMESCREEN_MAXSIZE 16384
 
 /*** Discovery uses DEV keys in any build variant ***/
 #define MODEL_BOARDLOADER_KEYS \

core/embed/models/D002/model_D002.h

@@ -12,6 +12,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_D001
 #define MODEL_USB_MANUFACTURER "Trezor DIY"
 #define MODEL_USB_PRODUCT MODEL_FULL_NAME
+#define MODEL_HOMESCREEN_MAXSIZE 65536
 
 /*** Discovery uses DEV keys in any build variant ***/
 #define MODEL_BOARDLOADER_KEYS \

core/embed/models/T2B1/model_T2B1.h

@@ -10,6 +10,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_T2B1
 #define MODEL_USB_MANUFACTURER "SatoshiLabs"
 #define MODEL_USB_PRODUCT "TREZOR"
+#define MODEL_HOMESCREEN_MAXSIZE 16384
 
 /*** PRODUCTION KEYS  ***/
 #define MODEL_BOARDLOADER_KEYS \

core/embed/models/T2T1/model_T2T1.h

@@ -10,6 +10,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_T2T1
 #define MODEL_USB_MANUFACTURER "SatoshiLabs"
 #define MODEL_USB_PRODUCT "TREZOR"
+#define MODEL_HOMESCREEN_MAXSIZE 16384
 
 /*** PRODUCTION KEYS  ***/
 #define MODEL_BOARDLOADER_KEYS \

core/embed/models/T3B1/model_T3B1.h

@@ -12,6 +12,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_T3B1
 #define MODEL_USB_MANUFACTURER "Trezor Company"
 #define MODEL_USB_PRODUCT MODEL_FULL_NAME
+#define MODEL_HOMESCREEN_MAXSIZE 16384
 
 #define MODEL_BOARDLOADER_KEYS \
   (const uint8_t *)"\xbb\xc2\x1a\xdb\xc1\xb4\x4d\x6b\xfe\x10\xc5\x22\x3d\xe3\x3c\x28\x42\x9e\x52\x68\x07\x07\xd3\x24\x90\x07\xed\x42\xdc\xc5\xbe\x13", \

core/embed/models/T3T1/model_T3T1.h

@@ -12,6 +12,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_T3T1
 #define MODEL_USB_MANUFACTURER "Trezor Company"
 #define MODEL_USB_PRODUCT MODEL_FULL_NAME
+#define MODEL_HOMESCREEN_MAXSIZE 16384
 
 #define MODEL_BOARDLOADER_KEYS \
   (const uint8_t *)"\x76\xaf\x42\x6e\x61\x40\x6b\xad\x7c\x07\x7b\x40\x9c\x66\xfd\xe3\x9f\xb8\x17\x91\x93\x13\xae\x1e\x4c\x02\x53\x5c\x80\xbe\xed\x96", \

core/embed/models/T3W1/model_T3W1.h

@@ -12,6 +12,7 @@
 #define MODEL_INTERNAL_NAME_QSTR MP_QSTR_T3W1
 #define MODEL_USB_MANUFACTURER "Trezor Company"
 #define MODEL_USB_PRODUCT MODEL_FULL_NAME
+#define MODEL_HOMESCREEN_MAXSIZE 65536
 
 #define MODEL_BOARDLOADER_KEYS \
   (const uint8_t *)"\xe8\x91\x2f\x81\xb3\xe7\x80\xee\x65\x0e\xd3\x85\x6d\xb5\x32\x6e\x0b\x9e\xff\x10\x36\x4b\x33\x91\x93\xe7\xa8\xf1\x0f\x76\x21\xb9", \

core/embed/upymod/modtrezorutils/modtrezorutils.c

@@ -405,6 +405,8 @@ STATIC mp_obj_tuple_t mod_trezorutils_version_obj = {
 /// """USB Product name."""
 /// INTERNAL_MODEL: str
 /// """Internal model code."""
+/// HOMESCREEN_MAXSIZE: int
+/// """Maximum size of user-uploaded homescreen in bytes."""
 /// EMULATOR: bool
 /// """Whether the firmware is running in the emulator."""
 /// BITCOIN_ONLY: bool
@@ -488,6 +490,8 @@ STATIC const mp_rom_map_elem_t mp_module_trezorutils_globals_table[] = {
      MP_ROM_PTR(&mod_trezorutils_model_usb_product_obj)},
     {MP_ROM_QSTR(MP_QSTR_INTERNAL_MODEL),
      MP_ROM_QSTR(MODEL_INTERNAL_NAME_QSTR)},
+    {MP_ROM_QSTR(MP_QSTR_HOMESCREEN_MAXSIZE),
+     MP_ROM_INT(MODEL_HOMESCREEN_MAXSIZE)},
 #ifdef TREZOR_EMULATOR
     {MP_ROM_QSTR(MP_QSTR_EMULATOR), mp_const_true},
     MEMINFO_DICT_ENTRIES

core/mocks/generated/trezorutils.pyi

@@ -146,6 +146,8 @@ MODEL_USB_PRODUCT: str
 """USB Product name."""
 INTERNAL_MODEL: str
 """Internal model code."""
+HOMESCREEN_MAXSIZE: int
+"""Maximum size of user-uploaded homescreen in bytes."""
 EMULATOR: bool
 """Whether the firmware is running in the emulator."""
 BITCOIN_ONLY: bool

core/src/apps/management/apply_settings.py

@@ -16,14 +16,12 @@ BRT_PROTECT_CALL = ButtonRequestType.ProtectCall  # CACHE
 
 
 def _validate_homescreen(homescreen: bytes) -> None:
-    import storage.device as storage_device
-
     if homescreen == b"":
         return
 
-    if len(homescreen) > storage_device.HOMESCREEN_MAXSIZE:
+    if len(homescreen) > utils.HOMESCREEN_MAXSIZE:
         raise DataError(
-            f"Homescreen is too large, maximum size is {storage_device.HOMESCREEN_MAXSIZE} bytes"
+            f"Homescreen is too large, maximum size is {utils.HOMESCREEN_MAXSIZE} bytes"
         )
     if not trezorui_api.check_homescreen_format(homescreen):
         raise DataError("Wrong homescreen format")

core/src/storage/device.py

@@ -50,7 +50,6 @@ if TYPE_CHECKING:
     StorageSafetyCheckLevel = Literal[0, 1]
 # fmt: on
 
-HOMESCREEN_MAXSIZE = const(16384)
 LABEL_MAXLENGTH = const(32)
 
 if __debug__:
@@ -171,7 +170,7 @@ def set_passphrase_enabled(enable: bool) -> None:
 
 
 def set_homescreen(homescreen: bytes) -> None:
-    if len(homescreen) > HOMESCREEN_MAXSIZE:
+    if len(homescreen) > utils.HOMESCREEN_MAXSIZE:
         raise ValueError  # homescreen too large
     common.set(_NAMESPACE, _HOMESCREEN, homescreen, public=True)
 

core/src/trezor/utils.py

@@ -3,6 +3,7 @@ import sys
 from trezorutils import (  # noqa: F401
     BITCOIN_ONLY,
     EMULATOR,
+    HOMESCREEN_MAXSIZE,
     INTERNAL_MODEL,
     MODEL,
     MODEL_FULL_NAME,