fix(bootloader): fixed P4 bootloader being able to boot with certain configs

Due to internal memory being behind a cache on P4 we need to make sure we do
cache write backs when manipulating IRAM over the dcache.

components/bootloader_support/src/esp_image_format.c

@@ -226,6 +226,8 @@ static esp_err_t image_load(esp_image_load_mode_t mode, const esp_partition_pos_
             }
         }
 #if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
+        /* We have manipulated data over dcache that will be read over icache and need
+           to writeback, else the data read might be invalid */
         cache_ll_writeback_all(CACHE_LL_LEVEL_INT_MEM, CACHE_TYPE_DATA, CACHE_LL_ID_ALL);
 #endif
     }
@@ -673,6 +675,13 @@ static esp_err_t process_segment_data(int segment, intptr_t load_addr, uint32_t
 
     if (checksum == NULL && sha_handle == NULL) {
         memcpy((void *)load_addr, data, data_len);
+#if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
+        if (esp_ptr_in_iram((uint32_t *)load_addr)) {
+            /* If we have manipulated data over dcache that will be read over icache then we need
+               to writeback, else the data read might be invalid */
+            cache_ll_writeback_all(CACHE_LL_LEVEL_INT_MEM, CACHE_TYPE_DATA, CACHE_LL_ID_ALL);
+        }
+#endif
         bootloader_munmap(data);
         return ESP_OK;
     }
@@ -728,7 +737,9 @@ static esp_err_t process_segment_data(int segment, intptr_t load_addr, uint32_t
         }
     }
 #if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
-    if (do_load && esp_ptr_in_diram_iram((uint32_t *)load_addr)) {
+    if (do_load && esp_ptr_in_iram((uint32_t *)load_addr)) {
+        /* If we have manipulated data over dcache that will be read over icache then we need
+           to writeback, else the data read might be invalid */
         cache_ll_writeback_all(CACHE_LL_LEVEL_INT_MEM, CACHE_TYPE_DATA, CACHE_LL_ID_ALL);
     }
 #endif

examples/system/.build-test-rules.yml

@@ -245,12 +245,6 @@ examples/system/select:
   depends_components:
     - vfs
 
-examples/system/startup_time:
-  disable_test:
-    - if: IDF_TARGET == "esp32p4"
-      temporary: true
-      reason: test not pass, should be re-enable # TODO: IDF-8989
-
 examples/system/sysview_tracing:
   disable:
     - if: SOC_GPTIMER_SUPPORTED != 1

examples/system/startup_time/pytest_startup_time.py

@@ -6,7 +6,6 @@ import pytest
 from pytest_embedded import Dut
 
 
-@pytest.mark.temp_skip_ci(targets=['esp32p4'], reason='esp32p4 support TBD')  # TODO: IDF-8989
 @pytest.mark.supported_targets
 @pytest.mark.generic
 @pytest.mark.parametrize('config', [