fix(change_baud): Disable changing baud rate on ESP32-C2 and ESP32-C5 in SDM

Author: radimkarnis

esptool/targets/esp32c2.py

@@ -106,6 +106,12 @@ def get_crystal_freq(self):
         return ESPLoader.get_crystal_freq(self)
 
     def change_baud(self, baud):
+        if self.secure_download_mode:  # ESPTOOL-1231
+            print(
+                "WARNING: Baud rate change is not supported in secure download mode. "
+                "Keeping 115200 baud."
+            )
+            return
         rom_with_26M_XTAL = not self.IS_STUB and self.get_crystal_freq() == 26
         if rom_with_26M_XTAL:
             # The code is copied over from ESPLoader.change_baud().

esptool/targets/esp32c5.py

@@ -132,7 +132,12 @@ def hard_reset(self):
         ESPLoader.hard_reset(self, self.uses_usb_jtag_serial())
 
     def change_baud(self, baud):
-        if not self.IS_STUB:
+        if self.secure_download_mode:  # ESPTOOL-1231
+            print(
+                "WARNING: Baud rate change is not supported in secure download mode. "
+                "Keeping 115200 baud."
+            )
+        elif not self.IS_STUB:
             crystal_freq_rom_expect = self.get_crystal_freq_rom_expect()
             crystal_freq_detect = self.get_crystal_freq()
             print(