Flash image to eMMC from SD card

Long story short

1. Boot from SD into dom0 of image that you need to flash
2. Destroy all user domains xl destroy DomA, DomU, DomF etc
3. Switch to domd xl console DomD and run in it:

systemctl isolate rescue
mount -o remount,ro /
dd if=/dev/mmcblk2 of=/dev/mmcblk0 bs=1M count=9216 status=progress

Detailed instruction for manual flashing

1. Run minicom
2. Turn on board with SD card inserted
3. Press Enter repeatedly until u-boot's prompt => appears

Hit any key to stop autoboot:  0 
=> 
=> 
=> 
=> 
=> 

4. Run two commands in minicom

setenv boot_dev mmcblk1
run bootcmd_mmc0

This will continue regular boot from SD. 5) Log in into dom0: root Wait for messages

Parsing config from /xt/dom.cfg/doma.cfg
(XEN) Added GSX guest domain 2
(XEN) ipmmu: /soc/mmu@e67b0000: d2: Set IPMMU context 1 (pgd 0x75dc02000)
(XEN) ipmmu: /soc/gsx_domu: Initialized master device (IPMMUs 4 micro-TLBs 4)
(XEN) ipmmu: /soc/gsx_domu: IPMMU1: /soc/mmu@fd800000
(XEN) ipmmu: /soc/gsx_domu: IPMMU2: /soc/mmu@fd950000
(XEN) ipmmu: /soc/gsx_domu: IPMMU3: /soc/mmu@fd960000
(XEN) ipmmu: /soc/gsx_domu: IPMMU4: /soc/mmu@fd970000
(XEN) ipmmu: /soc/gsx_domu: Using IPMMU context 1
xl destroy DomA(XEN) printk: 18 messages suppressed.
(XEN) d2v0: vGICD: unhandled word write 0xffffffff to ICACTIVER4
(XEN) d2v0: vGICD: unhandled word write 0xffffffff to ICACTIVER8
(XEN) d2v0: vGICD: unhandled word write 0xffffffff to ICACTIVER12
(XEN) d2v0: vGICD: unhandled word write 0xffffffff to ICACTIVER16
(XEN) d2v0: vGICD: unhandled word write 0xffffffff to ICACTIVER0
(XEN) d2v1: vGICD: unhandled word write 0xffffffff to ICACTIVER0
(XEN) d2v2: vGICD: unhandled word write 0xffffffff to ICACTIVER0

and run commands:

xl destroy DomA
xl console DomD
root

Wait up to 3 minutes until cluster appears (applicable only if cluster is present in your image), then

systemctl isolate rescue

Wait up to 3 minutes until you see h3ulcb-4x2g-kf-xt-domd login: then log in and run commands:

root
mount -o remount,ro /
dd if=/dev/mmcblk1 of=/dev/mmcblk0 bs=1M count=9216 status=progress

Wait 10 minutes. Turn off board. Remove SD card. Turn on board.

Flashing with script for minicom

Download script. It's plain text, no execution rights needed.

1. Insert SD card.
2. Run minicom in script execution mode (use your ttyUSB* name)

minicom --script=./update_emmc_from_sd.script -D /dev/ttyUSB0

3. Turn on board and check that you see logs.
4. Script will switch board to load from SD, wait for domains, destroy domA, switch to domD and do all steps according from manual instruction above.
5. You should wait about 15 minutes. There are two places with long awaiting:

• "Waiting for DomA to start (up to 5 minutes)..."
• "Flashing of image takes about 9 minutes, so set timeout to 600 sec" with progress output

6. If everything is OK, board will reboot and boot from eMMC. SD card need to be removed, to be sure that it is not used.