fdcavalcanti opened a new pull request, #3135:
URL: https://github.com/apache/nuttx-apps/pull/3135
## Summary
This example makes it possible to use a binary from local storage for
MCUBoot update. It copies the binary file to the secondary slot instead of
downloading from a remote URL. Can be used to update from a SD Card, for
example.
## Impact
- Impact on user: Yes, adds new MCUBoot example to update the image from a
local storage.
- Impact on build: No.
- Impact on hardware: No.
- Impact on documentation: Yes. Updates documentation on main NuttX repo:
link
- Impact on security: No.
- Impact on compatibility: No.
## Testing
The following example updates the firmware using a binary from a SD Card
mounted to `/data`.
### Building
- `./tools/configure.sh esp32-devkitc:mcuboot_update_agent`
- Enable `CONFIG_EXAMPLES_MCUBOOT_LOCAL_AGENT`
- Merge the SD Card config: `kconfig-merge -m .config
boards/risc-v/esp32c6/esp32c6-devkitc/configs/sdmmc_spi/defconfig`
- make and flash
Now generate the 2nd image:
- Change the image target slot to 2nd slot by setting
`CONFIG_ESPRESSIF_ESPTOOL_TARGET_SECONDARY`
- Optionally change the MOTD to have a visual ID of the updated image
- make
Have the image transferred to a SD Card and mount it to `/data`:
```
nsh> mount -t vfat /dev/mmcsd0 /mnt
nsh> ls /mnt
/mnt:
nuttx.txt
nuttx_c6_ota.bin
```
### Running
Now just run the example and it should copy the binary to the 2nd slot and
MCUBoot will update the image:
```
nsh> mcuboot_local_agent /mnt/nuttx_c6_ota.bin
MCUBoot Local Update Agent
Firmware file: /mnt/nuttx_c6_ota.bin
Firmware file size: 1048576 bytes
Erasing secondary flash slot...
Copying firmware to secondary slot...
Progress: 4096/1048576 bytes [0%]
Progress: 8192/1048576 bytes [0%]
Progress: 12288/1048576 bytes [1%]
....
Progress: 1044480/1048576 bytes [99%]
Progress: 1048576/1048576 bytes [100%]
Firmware copy completed successfully!
Firmware successfully copied to secondary slot!
Update scheduled for next boot. Restarting...
reboot status=0
```
### Results
MCUBoot shows the image is updated:
```
reboot status=0
WPA: Clear old PMK and PTK
ESP-ROM:esp32c6-20220919
Build:Sep 19 2022
rst:0xc (SW_CPU),boot:0x6f (SPI_FAST_FLASH_BOOT)
Saved PC:0x40803964
SPIWP:0xee
mode:DIO, clock div:2
load:0x40860610,len:0x24c8
load:0x40869610,len:0x2870
load:0x40873bb8,len:0x1938
entry 0x4086be2a
[esp32c6] [INF] *** Booting MCUboot build v2.2.0-rc1 ***
[esp32c6] [INF] [boot] chip revision: v0.0
[esp32c6] [INF] [boot.esp32c6] SPI Speed : 80MHz
[esp32c6] [INF] [boot.esp32c6] SPI Mode : DIO
[esp32c6] [INF] [boot.esp32c6] SPI Flash Size : 4MB
[esp32c6] [INF] [boot] Enabling RNG early entropy source...
[esp32c6] [INF] Primary image: magic=good, swap_type=0x1, copy_done=0x3,
image_ok=0x1
[esp32c6] [INF] Scratch: magic=unset, swap_type=0x1, copy_done=0x3,
image_ok=0x3
[esp32c6] [INF] Boot source: primary slot
[esp32c6] [INF] Image index: 0, Swap type: test
[esp32c6] [INF] Starting swap using scratch algorithm.
[esp32c6] [INF] Disabling RNG early entropy source...
[esp32c6] [INF] br_image_off = 0x10000
[esp32c6] [INF] ih_hdr_size = 0x20
[esp32c6] [INF] Loading image 0 - slot 0 from flash, area id: 1
[esp32c6] [INF] DRAM segment: start=0x21d8c, size=0x2c48, vaddr=0x40811d10
[esp32c6] [INF] IRAM segment: start=0x10080, size=0x11d0c, vaddr=0x40800000
[esp32c6] [INF] LP_RAM segment: paddr=0010e3e0h, vaddr=50000010h,
size=00018h ( 24) load
[esp32c6] [INF] LP_IRAM segment: paddr=0010e3e0h, vaddr=50000000h,
size=00010h ( 16) load
[esp32c6] [INF] start=0x40806558
ABCDEInitializing /dev/spi2...
INFO: init MMC/SD slot 0 on SPI2: /dev/mmcsd0
INFO: MMCSD initialized
I (25584) pp: pp rom version: 5b8dcfa
I (25585) net80211: net80211 rom version: 5b8dcfa
I (25588) wifi_init: rx ba win: 6
I (25588) wifi_init: LWIP disabled
I (25590) phy_init: phy_version 331,5b89037,Mar 3 2025,16:01:12
NuttShell (NSH) NuttX-10.4.0
This is MCUBoot Updated Image!!
nsh>
```
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