OTA - redirection support + bootloader

2025-12-08 12:37:01 +03:00 · 2019-09-26 19:51:16 -04:00
parent 4f0fedb126
commit ae1a480029
51 changed files with 38686 additions and 45 deletions
--- a/components/bootloader/subproject/main/bootloader_start.c
+++ b/components/bootloader/subproject/main/bootloader_start.c
@@ -0,0 +1,126 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "esp_log.h"
+#include "esp32/rom/gpio.h"
+#include "esp32/rom/spi_flash.h"
+#include "bootloader_config.h"
+#include "bootloader_init.h"
+#include "bootloader_utility.h"
+#include "bootloader_common.h"
+#include "sdkconfig.h"
+#include "esp_image_format.h"
+
+static const char* TAG = "boot";
+
+static int select_partition_number (bootloader_state_t *bs);
+static int selected_boot_partition(const bootloader_state_t *bs);
+#define LWS_MAGIC_REBOOT_TYPE_ADS 0x50001ffc
+#define LWS_MAGIC_REBOOT_TYPE_REQ_FACTORY 0xb00bcafe
+#define LWS_MAGIC_REBOOT_TYPE_FORCED_FACTORY 0xfaceb00b
+#define LWS_MAGIC_REBOOT_TYPE_FORCED_FACTORY_BUTTON 0xf0cedfac
+#define LWS_MAGIC_REBOOT_TYPE_REQ_FACTORY_ERASE_OTA 0xfac0eeee
+
+/*
+ * We arrive here after the ROM bootloader finished loading this second stage bootloader from flash.
+ * The hardware is mostly uninitialized, flash cache is down and the app CPU is in reset.
+ * We do have a stack, so we can do the initialization in C.
+ */
+void __attribute__((noreturn)) call_start_cpu0()
+{
+    // 1. Hardware initialization
+    if (bootloader_init() != ESP_OK) {
+        bootloader_reset();
+    }
+
+    // 2. Select the number of boot partition
+    bootloader_state_t bs = { 0 };
+    int boot_index = select_partition_number(&bs);
+    if (boot_index == INVALID_INDEX) {
+        bootloader_reset();
+    }
+
+    // 3. Load the app image for booting
+    bootloader_utility_load_boot_image(&bs, boot_index);
+}
+
+// Select the number of boot partition
+static int select_partition_number (bootloader_state_t *bs)
+{
+    // 1. Load partition table
+    if (!bootloader_utility_load_partition_table(bs)) {
+        ESP_LOGE(TAG, "load partition table error!");
+        return INVALID_INDEX;
+    }
+
+    // 2. Select the number of boot partition
+    return selected_boot_partition(bs);
+}
+
+/*
+ * Selects a boot partition.
+ * The conditions for switching to another firmware are checked.
+ */
+static int selected_boot_partition(const bootloader_state_t *bs)
+{
+    int boot_index = bootloader_utility_get_selected_boot_partition(bs);
+    if (boot_index == INVALID_INDEX) {
+        return boot_index; // Unrecoverable failure (not due to corrupt ota data or bad partition contents)
+    } else {
+        // 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
+        uint32_t *p_force_factory_magic = (uint32_t *)LWS_MAGIC_REBOOT_TYPE_ADS;
+        if(*p_force_factory_magic == LWS_MAGIC_REBOOT_TYPE_REQ_FACTORY){
+        	boot_index=FACTORY_INDEX;
+        }
+
+    }
+    return boot_index;
+}
+
+// Return global reent struct if any newlib functions are linked to bootloader
+struct _reent* __getreent() {
+    return _GLOBAL_REENT;
+}
+