一.Update SD card

1.In linux console

1. df  //查看当前linux目录层次
   
2. ls /dev/disk/by-partlabel
   
3. PC gt; dd if=tf-a.stm32 of=/dev/mmcblk0p1 conv=fdatasync
   
4. PC gt; dd if=tf-a.stm32 of=/dev/mmcblk0p2 conv=fdatasync
   
5. PC gt; dd if=/dev/zero of=/dev/mmcblk0p3 conv=fdatasync
   
6. PC gt; dd if=u-boot.stm32 of=/dev/mmcblk0p3 conv=fdatasync

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2.Uboot console

1. //把sd卡通过usb 接口挂载到ubuntu系统下。
   
2. Board gt; mmc dev 0
   
3. Board gt; ums 0 mmc 0

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3.use dd cmd (update whole image)

1. PC gt; cd build-openstlinuxweston-stm32mp1/tmp-glibc/deploy/images/stm32mp1/scripts/
   
2. PC gt; ../scripts/create_sdcard_from_flashlayout.sh  .flashlayout_st-image-weston/FlashLayout_sdcard_stm32mp157a-dk1-optee.tsv
   
3. PC gt; sudo dd if=../flashlayout_st-image-weston_FlashLayout_sdcard_stm32mp157a-dk1-optee.raw of=/dev/sdb bs=8M conv=fdatasync status=progress

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二. Update of e•MMC

1.On A linux Console

1. Board gt;  echo 0 > /sys/class/block/mmcblk1boot0/force_ro
   
2. Board gt;  mmc bootbus set  single_backward x1 x1 dev/mmcblk1
   
3. 
   
4. #To update TF-A in boot1 and select this boot partition:
   
5. Board gt; dd if=tf-a.stm32 of=/dev/mmcblk1boot0 conv=fdatasync
   
6. Board gt; mmc bootpart enable 1 1 /dev/mmcblk1
   
7. 
   
8. #To update TF-A in boot2 and select this boot partition:
   
9. Board gt; dd if=tf-a.stm32 of=/dev/mmcblk1boot1 conv=fdatasync
   
10. Board gt; mmc bootpart enable 2 1 /dev/mmcblk1
    
11. 
    
12. #To update U-Boot in the first GPT partition:
    
13. Board gt; dd if=/dev/zero of=/dev/mmcblk1p1 conv=fdatasync
    
14. Board gt; dd if=u-boot.stm32 of=/dev/mmcblk1p1 conv=fdatasync

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2.On A uboot Console

1. #To update FSBL=TF-A, select the boot1 HW partition and come back to the user area at the end.
   
2. #ums command，you can directly export the available block devices (sd/mmc/usb) as USB mass storage devices with ums command:
   
3. # ums =  USB mass storage
   
4. Board gt; mmc dev 1
   
5. Board gt; mmc partconf 1 1 1 1
   
6. Board gt; ums 0 mmc 1
   
7. PC gt; dd if=tf-a.stm32 of=/dev/sdb  conv=fdatasync
   
8. Board gt; mmc partconf 1 1 1 0

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1. #To update SSBL = U-Boot in the first GPT partition in the user partition
   
2. Board gt; mmc dev 1
   
3. Board gt; ums 0 mmc 1
   
4. PC gt; dd if=u-boot.stm32 of=/dev/sdb1 conv=fdatasync
   
5. Board gt; mmc bootbus 1 0 0 0

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3.updating bootfs

1. PC gt; scp stm32mp157c-mydevicetree-mx.dtb root@<Target_IP>:/boot/
   
2. 
   
3. PC gt; mkdir -p $WORKING/bootfs
   
4. PC gt; mount -o loop <st-image-bootfs-openstlinux-weston-stm32mp1.ext4> $WORKING/bootfs
   
5. ##Then copy the new dtb file at the root of $WORKING/bootfs
   
6. PC gt; umount $WORKING/bootfs
   
7. PC gt; sync
   
8. PC gt; dd if=<st-image-bootfs-openstlinux-weston-stm32mp1.ext4> of=/dev/mmblk0p4 conv=fdat

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