sim: corrected maximal image size calculation

Corrected the maximal image size calculation for
the swap using scratch mode. Previously the vale which
is appropriate for the swap using move mode was used.

Signed-off-by: Andrzej Puzdrowski <[email protected]>

Author: nvlsianpu

sim/src/image.rs

@@ -1522,14 +1522,19 @@ fn install_image(flash: &mut SimMultiFlash, slot: &SlotInfo, len: ImageSize,
                 // This computation is incorrect, and we need to figure out the correct size.
                 // c::boot_status_sz(dev.align() as u32) as usize
                 16 + 4 * dev.align()
-            } else {
+            } else if Caps::SwapUsingMove.present() {
                 let sector_size = dev.sector_iter().next().unwrap().size as u32;
                 align_up(c::boot_trailer_sz(dev.align() as u32), sector_size) as usize
+            } else if Caps::SwapUsingScratch.present() {
+                c::boot_trailer_sz(dev.align() as u32) as usize
+            } else {
+                panic!("The maximum image size can't be calculated.")
             };
             let tlv_len = tlv.estimate_size();
             info!("slot: 0x{:x}, HDR: 0x{:x}, trailer: 0x{:x}",
                 slot_len, HDR_SIZE, trailer);
             slot_len - HDR_SIZE - trailer - tlv_len
+
         }
     };