.. first_boot_enc .. code-block:: none ESP-ROM:esp32s2-rc4-20191025 Build:Oct 25 2019 rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT) SPIWP:0xee mode:DIO, clock div:1 load:0x3ffe6260,len:0x78 load:0x3ffe62d8,len:0x231c load:0x4004c000,len:0x9d8 load:0x40050000,len:0x3cf8 entry 0x4004c1ec I (48) boot: ESP-IDF qa-test-v4.3-20201113-777-gd8e1 2nd stage bootloader I (48) boot: compile time 11:24:04 I (48) boot: chip revision: 0 I (52) boot.esp32s2: SPI Speed : 80MHz I (57) boot.esp32s2: SPI Mode : DIO I (62) boot.esp32s2: SPI Flash Size : 2MB I (66) boot: Enabling RNG early entropy source... I (72) boot: Partition Table: I (75) boot: ## Label Usage Type ST Offset Length I (83) boot: 0 nvs WiFi data 01 02 0000a000 00006000 I (90) boot: 1 storage Unknown data 01 ff 00010000 00001000 I (98) boot: 2 factory factory app 00 00 00020000 00100000 I (105) boot: End of partition table I (109) esp_image: segment 0: paddr=0x00020020 vaddr=0x3f000020 size=0x0618c ( 24972) map I (124) esp_image: segment 1: paddr=0x000261b4 vaddr=0x3ffbcae0 size=0x02624 ( 9764) load I (129) esp_image: segment 2: paddr=0x000287e0 vaddr=0x40022000 size=0x00404 ( 1028) load 0x40022000: _WindowOverflow4 at /home/marius/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1730 I (136) esp_image: segment 3: paddr=0x00028bec vaddr=0x40022404 size=0x0742c ( 29740) load 0x40022404: _coredump_iram_end at ??:? I (153) esp_image: segment 4: paddr=0x00030020 vaddr=0x40080020 size=0x1457c ( 83324) map 0x40080020: _stext at ??:? I (171) esp_image: segment 5: paddr=0x000445a4 vaddr=0x40029830 size=0x032ac ( 12972) load 0x40029830: gpspi_flash_ll_set_miso_bitlen at /home/marius/esp-idf/examples/security/flash_encryption/build/../../../../components/hal/esp32s2/include/hal/gpspi_flash_ll.h:261 (inlined by) spi_flash_hal_gpspi_common_command at /home/marius/esp-idf/components/hal/spi_flash_hal_common.inc:161 I (181) boot: Loaded app from partition at offset 0x20000 I (181) boot: Checking flash encryption... I (181) efuse: Batch mode of writing fields is enabled I (188) flash_encrypt: Generating new flash encryption key... W (199) flash_encrypt: Not disabling UART bootloader encryption I (201) flash_encrypt: Disable UART bootloader cache... I (207) flash_encrypt: Disable JTAG... I (212) efuse: Batch mode of writing fields is disabled I (217) esp_image: segment 0: paddr=0x00001020 vaddr=0x3ffe6260 size=0x00078 ( 120) I (226) esp_image: segment 1: paddr=0x000010a0 vaddr=0x3ffe62d8 size=0x0231c ( 8988) I (236) esp_image: segment 2: paddr=0x000033c4 vaddr=0x4004c000 size=0x009d8 ( 2520) I (243) esp_image: segment 3: paddr=0x00003da4 vaddr=0x40050000 size=0x03cf8 ( 15608) I (651) flash_encrypt: bootloader encrypted successfully I (704) flash_encrypt: partition table encrypted and loaded successfully I (704) flash_encrypt: Encrypting partition 1 at offset 0x10000 (length 0x1000)... I (765) flash_encrypt: Done encrypting I (766) esp_image: segment 0: paddr=0x00020020 vaddr=0x3f000020 size=0x0618c ( 24972) map I (773) esp_image: segment 1: paddr=0x000261b4 vaddr=0x3ffbcae0 size=0x02624 ( 9764) I (778) esp_image: segment 2: paddr=0x000287e0 vaddr=0x40022000 size=0x00404 ( 1028) 0x40022000: _WindowOverflow4 at /home/marius/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1730 I (785) esp_image: segment 3: paddr=0x00028bec vaddr=0x40022404 size=0x0742c ( 29740) 0x40022404: _coredump_iram_end at ??:? I (799) esp_image: segment 4: paddr=0x00030020 vaddr=0x40080020 size=0x1457c ( 83324) map 0x40080020: _stext at ??:? I (820) esp_image: segment 5: paddr=0x000445a4 vaddr=0x40029830 size=0x032ac ( 12972) 0x40029830: gpspi_flash_ll_set_miso_bitlen at /home/marius/esp-idf/examples/security/flash_encryption/build/../../../../components/hal/esp32s2/include/hal/gpspi_flash_ll.h:261 (inlined by) spi_flash_hal_gpspi_common_command at /home/marius/esp-idf/components/hal/spi_flash_hal_common.inc:161 I (823) flash_encrypt: Encrypting partition 2 at offset 0x20000 (length 0x100000)... I (13869) flash_encrypt: Done encrypting I (13870) flash_encrypt: Flash encryption completed I (13870) boot: Resetting with flash encryption enabled... ------ .. already_en_enc .. code-block:: none ESP-ROM:esp32s2-rc4-20191025 Build:Oct 25 2019 rst:0x3 (RTC_SW_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT) Saved PC:0x40051242 SPIWP:0xee mode:DIO, clock div:1 load:0x3ffe6260,len:0x78 load:0x3ffe62d8,len:0x231c load:0x4004c000,len:0x9d8 load:0x40050000,len:0x3cf8 entry 0x4004c1ec I (56) boot: ESP-IDF qa-test-v4.3-20201113-777-gd8e1 2nd stage bootloader I (56) boot: compile time 11:24:04 I (56) boot: chip revision: 0 I (60) boot.esp32s2: SPI Speed : 80MHz I (65) boot.esp32s2: SPI Mode : DIO I (69) boot.esp32s2: SPI Flash Size : 2MB I (74) boot: Enabling RNG early entropy source... I (80) boot: Partition Table: I (83) boot: ## Label Usage Type ST Offset Length I (90) boot: 0 nvs WiFi data 01 02 0000a000 00006000 I (98) boot: 1 storage Unknown data 01 ff 00010000 00001000 I (105) boot: 2 factory factory app 00 00 00020000 00100000 I (113) boot: End of partition table I (117) esp_image: segment 0: paddr=0x00020020 vaddr=0x3f000020 size=0x0618c ( 24972) map I (132) esp_image: segment 1: paddr=0x000261b4 vaddr=0x3ffbcae0 size=0x02624 ( 9764) load I (137) esp_image: segment 2: paddr=0x000287e0 vaddr=0x40022000 size=0x00404 ( 1028) load 0x40022000: _WindowOverflow4 at /home/marius/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1730 I (144) esp_image: segment 3: paddr=0x00028bec vaddr=0x40022404 size=0x0742c ( 29740) load 0x40022404: _coredump_iram_end at ??:? I (161) esp_image: segment 4: paddr=0x00030020 vaddr=0x40080020 size=0x1457c ( 83324) map 0x40080020: _stext at ??:? I (180) esp_image: segment 5: paddr=0x000445a4 vaddr=0x40029830 size=0x032ac ( 12972) load 0x40029830: gpspi_flash_ll_set_miso_bitlen at /home/marius/esp-idf/examples/security/flash_encryption/build/../../../../components/hal/esp32s2/include/hal/gpspi_flash_ll.h:261 (inlined by) spi_flash_hal_gpspi_common_command at /home/marius/esp-idf/components/hal/spi_flash_hal_common.inc:161 I (190) boot: Loaded app from partition at offset 0x20000 I (191) boot: Checking flash encryption... I (191) flash_encrypt: flash encryption is enabled (1 plaintext flashes left) I (199) boot: Disabling RNG early entropy source... I (216) cache: Instruction cache : size 8KB, 4Ways, cache line size 32Byte I (216) cpu_start: Pro cpu up. I (268) cpu_start: Pro cpu start user code I (268) cpu_start: cpu freq: 160000000 I (268) cpu_start: Application information: I (271) cpu_start: Project name: flash_encryption I (277) cpu_start: App version: qa-test-v4.3-20201113-777-gd8e1 I (284) cpu_start: Compile time: Dec 21 2020 11:24:00 I (290) cpu_start: ELF file SHA256: 30fd1b899312fef7... I (296) cpu_start: ESP-IDF: qa-test-v4.3-20201113-777-gd8e1 I (303) heap_init: Initializing. RAM available for dynamic allocation: I (310) heap_init: At 3FF9E000 len 00002000 (8 KiB): RTCRAM I (316) heap_init: At 3FFBF898 len 0003C768 (241 KiB): DRAM I (323) heap_init: At 3FFFC000 len 00003A10 (14 KiB): DRAM W (329) flash_encrypt: Flash encryption mode is DEVELOPMENT (not secure) I (336) spi_flash: detected chip: generic I (341) spi_flash: flash io: dio W (345) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header. I (358) cpu_start: Starting scheduler on PRO CPU. Example to check Flash Encryption status This is esp32s2 chip with 1 CPU core(s), WiFi, silicon revision 0, 2MB external flash FLASH_CRYPT_CNT eFuse value is 1 Flash encryption feature is enabled in DEVELOPMENT mode ------