limit default partition size

Some chips can have more than 16MB of flash, mine as 32MB. Historically
espflash failed to detect this flash size but now can. Without this
change the board will boot loop because the esp idf bootloader max size
is only 16MB.

Author: MabezDev

espflash/src/targets/mod.rs

@@ -31,6 +31,9 @@ use crate::{
     image_format::{ImageFormat, ImageFormatKind},
 };
 
+/// Max partition size is 16 MB
+const MAX_PARTITION_SIZE: u32 = 16 * 1000 * 1024;
+
 mod esp32;
 mod esp32c2;
 mod esp32c3;
@@ -187,7 +190,10 @@ impl Esp32Params {
                 Type::App,
                 SubType::App(AppType::Factory),
                 self.app_addr,
-                flash_size.map_or(self.app_size, |size| size - self.app_addr),
+                core::cmp::min(
+                    flash_size.map_or(self.app_size, |size| size - self.app_addr),
+                    MAX_PARTITION_SIZE,
+                ),
                 false,
             ),
         ])