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Writing VisionSOM-6ULL system image to eMMC memory

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Writing system image to eMMC memory


Prerequisites

  • A complete package with NXP UUU application - uuu-visionsom-6ull.zip
  • Built and extracted system image file called image.wic (from Yocto build tmp/deploy/images/visioncb-6ull-std/imx-image-multimedia-visioncb-6ull-std.wic.bz2)
  • Built bootloader binary u-boot.imx (from Yocto build tmp/deploy/images/visioncb-6ull-std/u-boot.imx or prebuilt binary for SoMLabs Debian SoMLabs-VisionSOM-6ULL-Debian-2020-08-u-boot.imx)

Information

The uuu-visionsom-6ull.zip archive contains the compiled NXP uuu binary for Linux, the commands script and the bootloader supporting fastboot command. The script requires the image.wic and u-boot.imx files to be in the same directory.

Preparing

For programming a memory of VisionSOM-6ULL, switch boot selector to mode: SERIAL.

BOOTx Boot Mode
BOOT1 BOOT0
1 1 Reserved
1 0 Internal
0 1 Serial
0 0 Fuses
VisionCB-6ULL-STD-2-0-boot.jpg


Connect the VisionCB-6ULL-STD board to the host PC using microUSB cable connected to the USB-OTG connector. To observe progress/error reports during programming, please use serial console. If you are using standard VisionSOM carrier board (VisionCB-6ULL-STD), this can be done by using build in serial/usb converter.

VisionCB-6ULL-STD-2-0-uuu-connection.jpg

Programming VisionSOM eMMC memory

Flasher does not assume any specific partitions layout. It simply takes raw system image and writes it into the storage.

Linux host PC

For image programing, use command:

sudo ./uuu vsom-6ull-cmds

Windows host PC

For image programing, use command:

uuu.exe vsom-6ull-cmds

Programming progress

At the console, a progress bar will appear:

VCB UUU Linux flashing progress bar.png

If the process ends with success, the following information will be shown on the console:

VCB UUU Linux flashing done.png

The serial terminal output will look like this:

U-Boot 2018.03-00022-g23f402fe9c-dirty (May 27 2019 - 23:52:18 +0200)

CPU:   Freescale i.MX6ULL rev1.0 792 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 50C
Reset cause: POR
Model: SoMLabs VisionSOM-6ULL
Board: SomLabs VisionSOM-6ULL
DRAM:  512 MiB
board_fix_fdt(): boot device: 7, fdt@8789ed8c
fdt_enable_by_ofname(): enabling node [/soc/aips-bus@02100000/qspi@021e0000] @00                                                                                                                                00641C...result: 0
fdt_enable_by_ofname(): enabling node [/soc/aips-bus@02100000/usdhc@02194000] @0                                                                                                                                0005950...result: 0
board_fix_fdt(): configuring USDHC2 for SD mode
board_fix_fdt(): offset: 00005950, status 0
NAND:  MXS NAND: clock is disabled!
0 MiB
MMC:   FSL_SDHC: 0
No panel detected: default to SL-TFT7-TP
Display: SL-TFT7-TP (800x480)
Video: 800x480x24
Error (-2): cannot determine file size
In:    serial
Out:   serial
Err:   serial
board_late_init()
flash target is MMC:0
Fastboot: Normal
Boot from USB for uuu
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc0 is current device
Starting download of 16776232 bytes
..........................................................................
.....................................................
downloading of 16776232 bytes finished
writing to partition 'all'
sparse flash target is mmc:0
writing to partition 'all' for sparse, buffer size 16776232
Flashing sparse image at offset 0
Flashing Sparse Image
........ wrote 16776192 bytes to 'all'
Starting download of 16776244 bytes
..........................................................................
.....................................................
downloading of 16776244 bytes finished
writing to partition 'all'
sparse flash target is mmc:0
writing to partition 'all' for sparse, buffer size 16776244
Flashing sparse image at offset 0
Flashing Sparse Image
........ wrote 16776192 bytes to 'all'


(...)


downloading of 16776244 bytes finished
writing to partition 'all'
sparse flash target is mmc:0
writing to partition 'all' for sparse, buffer size 16776244
Flashing sparse image at offset 0
Flashing Sparse Image
........ wrote 16776192 bytes to 'all'
Starting download of 8396852 bytes
................................................................
downloading of 8396852 bytes finished
writing to partition 'all'
sparse flash target is mmc:0
writing to partition 'all' for sparse, buffer size 8396852
Flashing sparse image at offset 0
Flashing Sparse Image
........ wrote 8396800 bytes to 'all'
resetting ...


The SoM will not boot due to present boot selector setup. Revert the boot selector back to: INTERNAL and press RESET. The board should start booting.

VisionCB-6ULL-STD-2-0-boot serial.jpg
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