bootloader_support: Reduce log spam about chip revisions

* Don't bother checking the chip revision if it looks like the partition
  doesn't really contain an app
* Don't print the "info" level about the revision & min revision unless
  we're in the bootloader (otherwise it gets printed at random times
  during the OTA process)

components/bootloader_support/src/bootloader_common.c

@@ -293,7 +293,9 @@ esp_err_t bootloader_common_check_chip_validity(const esp_image_header_t* img_hd
         ESP_LOGE(TAG, "can't run on lower chip revision, expected %d, found %d", revision, img_hdr->min_chip_rev);
         err = ESP_FAIL;
     } else if (revision != img_hdr->min_chip_rev) {
-        ESP_LOGI(TAG, "min. %s chip revision: %d", type == ESP_IMAGE_BOOTLOADER ? "bootloader" : "application", img_hdr->min_chip_rev);
+#ifdef BOOTLOADER_BUILD
+        ESP_LOGI(TAG, "chip revision: %d, min. %s chip revision: %d", revision, type == ESP_IMAGE_BOOTLOADER ? "bootloader" : "application", img_hdr->min_chip_rev);
+#endif
     }
     return err;
 }

components/bootloader_support/src/esp_image_format.c

@@ -311,9 +311,6 @@ static esp_err_t verify_image_header(uint32_t src_addr, const esp_image_header_t
         }
         err = ESP_ERR_IMAGE_INVALID;
     }
-    if (bootloader_common_check_chip_validity(image, ESP_IMAGE_APPLICATION) != ESP_OK) {
-        err = ESP_ERR_IMAGE_INVALID;
-    }
     if (!silent) {
         if (image->spi_mode > ESP_IMAGE_SPI_MODE_SLOW_READ) {
             ESP_LOGW(TAG, "image at 0x%x has invalid SPI mode %d", src_addr, image->spi_mode);
@@ -325,6 +322,16 @@ static esp_err_t verify_image_header(uint32_t src_addr, const esp_image_header_t
             ESP_LOGW(TAG, "image at 0x%x has invalid SPI size %d", src_addr, image->spi_size);
         }
     }
+
+    if (err == ESP_OK) {
+        // Checking the chip revision header *will* print a bunch of other info
+        // regardless of silent setting as this may be important, but don't bother checking it
+        // if it looks like the app partition is erased or otherwise garbage
+        if (bootloader_common_check_chip_validity(image, ESP_IMAGE_APPLICATION) != ESP_OK) {
+            err = ESP_ERR_IMAGE_INVALID;
+        }
+    }
+
     return err;
 }