From 6acbc2a234104617ff3eb8bcfa5b879ff8abb1c6 Mon Sep 17 00:00:00 2001
From: riley fenlon <rfenlon0@gmail.com>
Date: Mon, 12 Feb 2024 10:00:48 -0500
Subject: [PATCH] added CYW20820

---
 internalblue/core.py         |  4 +-
 internalblue/fw/fw_0x2305.py | 76 ++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 2 deletions(-)
 create mode 100644 internalblue/fw/fw_0x2305.py

diff --git a/internalblue/core.py b/internalblue/core.py
index 8b18d65..d82e8cf 100755
--- a/internalblue/core.py
+++ b/internalblue/core.py
@@ -729,9 +729,9 @@ class InternalBlue(with_metaclass(ABCMeta, object)):
             )
             return False
 
-        # Broadcom uses 0x000f as vendor ID, Cypress 0x0131
+        # Broadcom uses 0x000f as vendor ID, Cypress 0x0131, Infineon 0x0009
         vendor = (version[9] << 8) + version[8]
-        if vendor != 0xF and vendor != 0x131:
+        if vendor != 0xF and vendor != 0x131 and vendor != 0x9:
             self.logger.critical("Not running on a Broadcom or Cypress chip!")
             return False
         else:
diff --git a/internalblue/fw/fw_0x2305.py b/internalblue/fw/fw_0x2305.py
new file mode 100644
index 0000000..8413744
--- /dev/null
+++ b/internalblue/fw/fw_0x2305.py
@@ -0,0 +1,76 @@
+# fw_0x420e.py
+#
+# Generic firmware file in case we do not know something...
+#
+# Copyright (c) 2020 The InternalBlue Team. (MIT License)
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of
+# this software and associated documentation files (the "Software"), to deal in
+# the Software without restriction, including without limitation the rights to
+# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+# the Software, and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+# - The above copyright notice and this permission notice shall be included in
+#   all copies or substantial portions of the Software.
+# - The Software is provided "as is", without warranty of any kind, express or
+#   implied, including but not limited to the warranties of merchantability,
+#   fitness for a particular purpose and noninfringement. In no event shall the
+#   authors or copyright holders be liable for any claim, damages or other
+#   liability, whether in an action of contract, tort or otherwise, arising from,
+#   out of or in connection with the Software or the use or other dealings in the
+#   Software.
+
+from __future__ import absolute_import
+from .fw import MemorySection, FirmwareDefinition
+from .. import Address
+
+
+class CYW20820A1(FirmwareDefinition):
+    """
+    CYW20820 is a Cypress evaluation board, the newest one that is currently available.
+
+    Known issues:
+
+    * `Launch_RAM` does not terminate and crashes the board.
+
+      To get this working anyway:
+      The `Launch_RAM` handler HCI callback is at `0xF2884` and it can be overwritten with the
+      address of the memory snippet you want to launch. For example, at `0x219000` there is some
+      free memory. Put the function there. Then:
+
+      `internalblue.patchRom(0xF2884, p32(ASM_LOCATION_RNG+1)):  # function table entries are sub+1
+
+    """
+
+    # Firmware Infos
+    # Evaluation Kit CYW920820
+    FW_NAME = "CYW20820A1"
+
+
+    # Memory Sections
+    #                          start,    end,           is_rom? is_ram?
+    SECTIONS = [
+        MemorySection(0x00000000, 0x001FFFFF, True, False),  # Internal ROM
+        MemorySection(0x00200000, 0x0024FFFF, False, True),  # Internal Memory Cortex M3
+        MemorySection(
+            0x00270000, 0x0027FFFF, False, True
+        ),  # Internal Memory Patchram Contents
+        MemorySection(0x00310000, 0x00321FFF, False, True),  # HW Regs Cortex M3 (readable)
+    ]
+
+    # Patchram
+    PATCHRAM_TARGET_TABLE_ADDRESS = 0x310000
+    PATCHRAM_ENABLED_BITMAP_ADDRESS = 0x310404
+    PATCHRAM_VALUE_TABLE_ADDRESS = 0x270000
+    PATCHRAM_NUMBER_OF_SLOTS = 256
+    PATCHRAM_ALIGNED = False
+    # only seems to work 4-byte aligned here ...
+
+    # Launch_RAM is faulty so we need to overwrite it. This is the position of the handler.
+    LAUNCH_RAM = 0xF2884
+    HCI_EVENT_COMPLETE = 0x1179E
+
+    # Enable enhanced advertisement reports (bEnhancedAdvReport)
+    ENHANCED_ADV_REPORT_ADDRESS = Address(0x20294C)
+
+