Merge branch 'bugfix/bootloader_skip_verify_jtag_v4.0' into 'release/v4.0'

bootloader_support: don't check signature when JTAG is attached (v4.0)

See merge request espressif/esp-idf!10380

components/bootloader_support/src/esp_image_format.c

@@ -196,8 +196,17 @@ static esp_err_t image_load(esp_image_load_mode_t mode, const esp_partition_pos_
     if (!is_bootloader) {
 #ifdef SECURE_BOOT_CHECK_SIGNATURE
         // secure boot images have a signature appended
+#if defined(BOOTLOADER_BUILD) && !defined(CONFIG_SECURE_BOOT)
+            // If secure boot is not enabled in hardware, then
+            // skip the signature check in bootloader when the debugger is attached.
+            // This is done to allow for breakpoints in Flash.
+            if (!esp_cpu_in_ocd_debug_mode()) {
+#else // CONFIG_SECURE_BOOT
+            if (true) {
+#endif // end checking for JTAG
                 err = verify_secure_boot_signature(sha_handle, data);
-#else
+            }
+#else // SECURE_BOOT_CHECK_SIGNATURE
         // No secure boot, but SHA-256 can be appended for basic corruption detection
         if (sha_handle != NULL && !esp_cpu_in_ocd_debug_mode()) {
             err = verify_simple_hash(sha_handle, data);