bootloader: Add factory reset and start test app

Added feature:
- reset firmware to Factory app.(by long pressing of the button)
- boot Test app. (by long pressing of the button)
- Added feature erase data partitions from factory reset.

TW10281
TW10280

components/bootloader/Kconfig.projbuild

@@ -62,6 +62,71 @@ config BOOTLOADER_VDDSDIO_BOOST_1_9V
     bool "1.9V"
 endchoice
 
+config BOOTLOADER_FACTORY_RESET
+    bool "GPIO triggers factory reset"
+    default N
+    help
+        Allows to reset the device to factory settings:
+        - clear one or more data partitions;
+        - boot from "factory" partition.
+        The factory reset will occur if there is a GPIO input pulled low while device starts up.
+        See settings below.
+
+config BOOTLOADER_NUM_PIN_FACTORY_RESET
+    int "Number of the GPIO input for factory reset"
+    depends on BOOTLOADER_FACTORY_RESET
+    range 0 39
+    default 4
+    help
+        The selected GPIO will be configured as an input with internal pull-up enabled.
+        To trigger a factory reset, this GPIO must be pulled low on reset.
+        Note that GPIO34-39 do not have an internal pullup and an external one must be provided.
+
+config BOOTLOADER_OTA_DATA_ERASE
+    bool "Clear OTA data on factory reset (select factory partition)"
+    depends on BOOTLOADER_FACTORY_RESET
+    help
+        The device will boot from "factory" partition (or OTA slot 0 if no factory partition is present) after a factory reset.
+
+config BOOTLOADER_DATA_FACTORY_RESET
+     string "Comma-separated names of partitions to clear on factory reset"
+     depends on BOOTLOADER_FACTORY_RESET
+     default "nvs"
+     help
+        Allows customers to select which data partitions will be erased while factory reset.
+        
+        Specify the names of partitions as a comma-delimited with optional spaces for readability. (Like this: "nvs, phy_init, ...")
+        Make sure that the name specified in the partition table and here are the same. 
+        Partitions of type "app" cannot be specified here.
+
+config BOOTLOADER_APP_TEST
+    bool "GPIO triggers boot from test app partition"
+    default N
+    help
+        Allows to run the test app from "TEST" partition.
+        A boot from "test" partition will occur if there is a GPIO input pulled low while device starts up.
+        See settings below.
+
+config BOOTLOADER_NUM_PIN_APP_TEST
+    int "Number of the GPIO input to boot TEST partition"
+    depends on BOOTLOADER_APP_TEST
+    range 0 39
+    default 18
+    help
+        The selected GPIO will be configured as an input with internal pull-up enabled.
+        To trigger a test app, this GPIO must be pulled low on reset.
+        After the GPIO input is deactivated and the device reboots, the old application will boot. 
+        (factory or OTA[x]).
+        Note that GPIO34-39 do not have an internal pullup and an external one must be provided.
+
+config BOOTLOADER_HOLD_TIME_GPIO
+    int "Hold time of GPIO for reset/test mode (seconds)"
+    depends on BOOTLOADER_FACTORY_RESET || BOOTLOADER_APP_TEST
+    default 5
+    help
+        The GPIO must be held low continuously for this period of time after reset 
+        before a factory reset or test partition boot (as applicable) is performed.
+
 endmenu  # Bootloader
 
 

components/bootloader/subproject/main/bootloader_start.c

@@ -17,6 +17,7 @@
 
 #include "esp_log.h"
 #include "rom/gpio.h"
+#include "rom/spi_flash.h"
 #include "bootloader_config.h"
 #include "bootloader_init.h"
 #include "bootloader_utility.h"
@@ -83,7 +84,35 @@ static int selected_boot_partition(const bootloader_state_t *bs)
     if (boot_index == INVALID_INDEX) {
         return boot_index; // Unrecoverable failure (not due to corrupt ota data or bad partition contents)
     } else {
-        // Check for reset to the factory firmware or for launch OTA[x] firmware.
+        // Factory firmware.
+#ifdef CONFIG_BOOTLOADER_FACTORY_RESET
+        if (bootloader_common_check_long_hold_gpio(CONFIG_BOOTLOADER_NUM_PIN_FACTORY_RESET, CONFIG_BOOTLOADER_HOLD_TIME_GPIO) == 1) {
+            ESP_LOGI(TAG, "Detect a condition of the factory reset");
+            bool ota_data_erase = false;
+#ifdef CONFIG_BOOTLOADER_OTA_DATA_ERASE
+            ota_data_erase = true;
+#endif
+            const char *list_erase = CONFIG_BOOTLOADER_DATA_FACTORY_RESET;
+            ESP_LOGI(TAG, "Data partitions to erase: %s", list_erase);
+            if (bootloader_common_erase_part_type_data(list_erase, ota_data_erase) == false) {
+                ESP_LOGE(TAG, "Not all partitions were erased");
+            }
+            return bootloader_utility_get_selected_boot_partition(bs);
+        }
+#endif
+       // TEST firmware.
+#ifdef CONFIG_BOOTLOADER_APP_TEST
+        if (bootloader_common_check_long_hold_gpio(CONFIG_BOOTLOADER_NUM_PIN_APP_TEST, CONFIG_BOOTLOADER_HOLD_TIME_GPIO) == 1) {
+            ESP_LOGI(TAG, "Detect a boot condition of the test firmware");
+            if (bs->test.offset != 0) {
+                boot_index = TEST_APP_INDEX;
+                return boot_index;
+            } else {
+                ESP_LOGE(TAG, "Test firmware is not found in partition table");
+                return INVALID_INDEX;
+            }
+        }
+#endif
         // Customer implementation.
         // if (gpio_pin_1 == true && ...){
         //     boot_index = required_boot_partition;