.. first_boot_enc .. code-block:: none ESP-ROM:esp32s3-20210327 Build:Mar 27 2021 rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT) SPIWP:0xee mode:DIO, clock div:1 load:0x3fcd0270,len:0x2598 load:0x403b6000,len:0x878 load:0x403ba000,len:0x3dd4 entry 0x403b61c0 I (27) boot: ESP-IDF v4.4-dev-2003-g72fdecc1b7-dirty 2nd stage bootloader I (28) boot: compile time 14:15:37 I (28) boot: chip revision: 0 I (32) boot.esp32s3: SPI Speed : 80MHz I (36) boot.esp32s3: SPI Mode : DIO I (41) boot.esp32s3: SPI Flash Size : 2MB I (46) boot: Enabling RNG early entropy source... I (58) boot: Partition Table: I (62) boot: ## Label Usage Type ST Offset Length I (69) boot: 0 nvs WiFi data 01 02 0000a000 00006000 I (76) boot: 1 storage Unknown data 01 ff 00010000 00001000 I (84) boot: 2 factory factory app 00 00 00020000 00100000 I (91) boot: 3 nvs_key NVS keys 01 04 00120000 00001000 I (99) boot: End of partition table I (103) esp_image: segment 0: paddr=00020020 vaddr=3c020020 size=08118h ( 33048) map I (117) esp_image: segment 1: paddr=00028140 vaddr=3fc8fa30 size=023f4h ( 9204) load I (122) esp_image: segment 2: paddr=0002a53c vaddr=40374000 size=05adch ( 23260) load I (134) esp_image: segment 3: paddr=00030020 vaddr=42000020 size=1a710h (108304) map I (156) esp_image: segment 4: paddr=0004a738 vaddr=40379adc size=05f48h ( 24392) load I (162) esp_image: segment 5: paddr=00050688 vaddr=600fe000 size=00010h ( 16) load I (167) boot: Loaded app from partition at offset 0x20000 I (168) boot: Checking flash encryption... I (173) efuse: Batch mode of writing fields is enabled I (179) flash_encrypt: Generating new flash encryption key... I (188) efuse: Writing EFUSE_BLK_KEY0 with purpose 4 W (194) flash_encrypt: Not disabling UART bootloader encryption I (197) flash_encrypt: Disable UART bootloader cache... I (203) flash_encrypt: Disable JTAG... I (212) efuse: Batch mode. Prepared fields are committed I (214) esp_image: segment 0: paddr=00000020 vaddr=3fcd0270 size=02598h ( 9624) I (223) esp_image: segment 1: paddr=000025c0 vaddr=403b6000 size=00878h ( 2168) I (230) esp_image: segment 2: paddr=00002e40 vaddr=403ba000 size=03dd4h ( 15828) I (534) flash_encrypt: bootloader encrypted successfully I (578) flash_encrypt: partition table encrypted and loaded successfully I (578) flash_encrypt: Encrypting partition 1 at offset 0x10000 (length 0x1000)... I (628) flash_encrypt: Done encrypting I (629) esp_image: segment 0: paddr=00020020 vaddr=3c020020 size=08118h ( 33048) map I (636) esp_image: segment 1: paddr=00028140 vaddr=3fc8fa30 size=023f4h ( 9204) I (640) esp_image: segment 2: paddr=0002a53c vaddr=40374000 size=05adch ( 23260) I (651) esp_image: segment 3: paddr=00030020 vaddr=42000020 size=1a710h (108304) map I (675) esp_image: segment 4: paddr=0004a738 vaddr=40379adc size=05f48h ( 24392) I (679) esp_image: segment 5: paddr=00050688 vaddr=600fe000 size=00010h ( 16) I (680) flash_encrypt: Encrypting partition 2 at offset 0x20000 (length 0x100000)... I (11571) flash_encrypt: Done encrypting I (11571) flash_encrypt: Encrypting partition 3 at offset 0x120000 (length 0x1000)... I (11617) flash_encrypt: Done encrypting I (11618) flash_encrypt: Flash encryption completed I (11623) boot: Resetting with flash encryption enabled... ------ .. already_en_enc .. code-block:: none ESP-ROM:esp32s3-20210327 Build:Mar 27 2021 rst:0x3 (RTC_SW_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT) Saved PC:0x403bb1d6 SPIWP:0xee mode:DIO, clock div:1 load:0x3fcd0270,len:0x2598 load:0x403b6000,len:0x878 load:0x403ba000,len:0x3dd4 entry 0x403b61c0 I (35) boot: ESP-IDF v4.4-dev-2003-g72fdecc1b7-dirty 2nd stage bootloader I (35) boot: compile time 14:15:37 I (35) boot: chip revision: 0 I (39) boot.esp32s3: SPI Speed : 80MHz I (44) boot.esp32s3: SPI Mode : DIO I (48) boot.esp32s3: SPI Flash Size : 2MB I (53) boot: Enabling RNG early entropy source... I (65) boot: Partition Table: I (69) boot: ## Label Usage Type ST Offset Length I (76) boot: 0 nvs WiFi data 01 02 0000a000 00006000 I (84) boot: 1 storage Unknown data 01 ff 00010000 00001000 I (91) boot: 2 factory factory app 00 00 00020000 00100000 I (99) boot: 3 nvs_key NVS keys 01 04 00120000 00001000 I (106) boot: End of partition table I (110) esp_image: segment 0: paddr=00020020 vaddr=3c020020 size=08118h ( 33048) map I (126) esp_image: segment 1: paddr=00028140 vaddr=3fc8fa30 size=023f4h ( 9204) load I (129) esp_image: segment 2: paddr=0002a53c vaddr=40374000 size=05adch ( 23260) load I (141) esp_image: segment 3: paddr=00030020 vaddr=42000020 size=1a710h (108304) map I (166) esp_image: segment 4: paddr=0004a738 vaddr=40379adc size=05f48h ( 24392) load I (172) esp_image: segment 5: paddr=00050688 vaddr=600fe000 size=00010h ( 16) load I (177) boot: Loaded app from partition at offset 0x20000 I (178) boot: Checking flash encryption... I (183) flash_encrypt: flash encryption is enabled (1 plaintext flashes left) I (190) boot: Disabling RNG early entropy source... I (214) cpu_start: Pro cpu up. I (214) cpu_start: Starting app cpu, entry point is 0x40374fa8 0x40374fa8: call_start_cpu1 at /home/marius/esp-idf_3/components/esp_system/port/cpu_start.c:160 I (0) cpu_start: App cpu up. I (228) cpu_start: Pro cpu start user code I (228) cpu_start: cpu freq: 160000000 I (228) cpu_start: Application information: I (231) cpu_start: Project name: flash_encryption I (237) cpu_start: App version: v4.4-dev-2003-g72fdecc1b7-dirty I (244) cpu_start: Compile time: Jul 12 2021 14:15:34 I (250) cpu_start: ELF file SHA256: a7e6343c6a1c2215... I (256) cpu_start: ESP-IDF: v4.4-dev-2003-g72fdecc1b7-dirty I (263) heap_init: Initializing. RAM available for dynamic allocation: I (270) heap_init: At 3FC92810 len 0004D7F0 (309 KiB): D/IRAM I (277) heap_init: At 3FCE0000 len 0000EE34 (59 KiB): STACK/DRAM I (283) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM I (290) spi_flash: detected chip: generic I (294) spi_flash: flash io: dio W (298) spi_flash: Detected size(8192k) larger than the size in the binary image header(2048k). Using the size in the binary image header. I (311) flash_encrypt: Flash encryption mode is DEVELOPMENT (not secure) I (318) cpu_start: Starting scheduler on PRO CPU. I (0) cpu_start: Starting scheduler on APP CPU. Example to check Flash Encryption status This is esp32s3 chip with 2 CPU core(s), WiFi/BLE, silicon revision 0, 2MB external flash FLASH_CRYPT_CNT eFuse value is 1 Flash encryption feature is enabled in DEVELOPMENT mode ------