cleanup MCU definitions (#1226)

* cleanup MCU definitions

* rename

* enum

* enum

* fix that

python/constants.py

@@ -0,0 +1,50 @@
+import os
+import enum
+from typing import List, NamedTuple
+
+BASEDIR = os.path.join(os.path.dirname(os.path.realpath(__file__)), "../")
+
+
+class McuConfig(NamedTuple):
+  mcu: str
+  block_size: int
+  sector_sizes: List[int]
+  serial_number_address: int
+  app_address: int
+  app_path: str
+  bootstub_address: int
+  bootstub_path: str
+
+Fx = (
+  0x800,
+  [0x4000 for _ in range(4)] + [0x10000] + [0x20000 for _ in range(11)],
+  0x1FFF79C0,
+  0x8004000,
+  os.path.join(BASEDIR, "board", "obj", "panda.bin.signed"),
+  0x8000000,
+  os.path.join(BASEDIR, "board", "obj", "bootstub.panda.bin"),
+)
+F2Config = McuConfig("STM32F2", *Fx)
+F4Config = McuConfig("STM32F4", *Fx)
+
+H7Config = McuConfig(
+  "STM32H7",
+  0x400,
+  # there is an 8th sector, but we use that for the provisioning chunk, so don't program over that!
+  [0x20000 for _ in range(7)],
+  0x080FFFC0,
+  0x8020000,
+  os.path.join(BASEDIR, "board", "obj", "panda_h7.bin.signed"),
+  0x8000000,
+  os.path.join(BASEDIR, "board", "obj", "bootstub.panda_h7.bin"),
+)
+
+@enum.unique
+class McuType(enum.Enum):
+  F2 = F2Config
+  F4 = F4Config
+  H7 = H7Config
+
+  @property
+  def config(self):
+    return self.value