admin_from_Mars Posted September 1, 2020 Share Posted September 1, 2020 (edited) Hello, everyone! I have an S905M device (Sumavision Q5, RAM:1G, ROM:8G), I made a bootable USB with an Armbian image( ARMBIAN 5.44 user-built Ubuntu 18.04.5 LTS 3.14.29, use gxbb_p201.dtb file ) . I want to use "ddbr" then “b” to make a backup of the EMMC. However, root@SumavisionQ5:~# ddbr DO YOU WANT TO BACKUP OR RESTORE ? BACKUP=(b) RESTORE=(r) b UNABLE TO FIND ANY EMMC OR SD DRIVES ON THIS SYSTEM!!! then I use command "lsblk", I found all partitions(cache, params, ... , data) of the internal storage (8G ROM) for andriod system are treated as seperated disks as shown below: root@SumavisionQ5:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 1 14.9G 0 disk |-sda1 8:1 1 128M 0 part /boot `-sda2 8:2 1 14.6G 0 part / cache 250:0 0 512M 0 disk params 250:1 0 64M 0 disk logo 250:2 0 32M 0 disk recovery 250:3 0 32M 0 disk rsv 250:4 0 8M 0 disk tee 250:5 0 8M 0 disk crypt 250:6 0 32M 0 disk misc 250:7 0 32M 0 disk instaboot 250:8 0 512M 0 disk boot 250:9 0 32M 0 disk system 250:10 0 1G 0 disk data 250:11 0 4.9G 0 disk zram0 253:0 0 100.9M 0 disk [SWAP] zram1 253:1 0 100.9M 0 disk [SWAP] zram2 253:2 0 100.9M 0 disk [SWAP] zram3 253:3 0 100.9M 0 disk [SWAP] use armbianmonitor -u, a detail info is uploaded in http://ix.io/2vPI From that, I find something the 8G ROM is in NAND instead of in EMMC : [ 6.263857] nandphy: Nand PHY Ver:XXX.XXX.001.0006 (c) 2013 Amlogic Inc. [ 6.270503] nandphy: ######STS IRQ mode for nand driver [ 6.275794] nandphy: NAND device id: 2c 64 44 4b a9 0 0 0 [ 6.281261] nandphy: detect NAND device: B revision NAND 8GiB MT29F64G08CBABA [ 6.340701] nandphy: clk_reg = 81000244 [ 6.343380] nandphy: bus_c=6,bus_t=7,sys=4.0ns,T_REA=16,T_RHOH=15 [ 6.347931] nandphy: new oob mode [ 6.352301] nandphy: NAND CKECK:arg nbbt:arg_valid=1,blk_addr=5,page_addr=0 [ 6.361720] nandphy: NAND CKECK:arg ncnf:arg_valid=1,blk_addr=4,page_addr=0 [ 6.382065] nandphy: NAND CKECK:arg phyp:arg_valid=1,blk_addr=8,page_addr=1 [ 6.402285] nandphy: NAND CKECK:arg nkey:arg_valid=1,blk_addr=9,page_addr=0 [ 6.432194] nandphy: NAND CKECK:arg ndtb:arg_valid=1,blk_addr=7,page_addr=33 [ 6.462225] nandphy: NAND CKECK:arg nenv:arg_valid=1,blk_addr=10,page_addr=9 [ 6.469413] nandphy: nfboot : [ 6.472338] nandphy: off:0x000000000000-0x000000800000 :partn=0:single_chip single_plane [ 6.478386] nandphy: nfcache : [ 6.481817] nandphy: off:0x000006800000-0x000029000000 :partn=2:single_chip multi_plane [ 6.489940] nandphy: nfcode : [ 6.493390] nandphy: off:0x00002f800000-0x000077000000 :partn=9:single_chip multi_plane [ 6.501481] nandphy: nfdata : [ 6.504948] nandphy: off:0x0000a6800000-0x000159800000 :partn=1:single_chip multi_plane How I can do it? Could command “ddbr” make a backup of NAND flash？ OK! As far as I know，command “ddbr” can not make a backup of a andriod system in NAND flash. ________________________________________ Background................................................... I also have a device (Tianyi, TY1208-Z, RAM:1G, ROM:8G) with S905L, and I have successfully made a backup file of EMMC. The EMMC is normally recognised as shown below: root@aml:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT mmcblk0 179:0 0 1.9G 0 disk |-mmcblk0p1 179:1 0 128M 0 part `-mmcblk0p2 179:2 0 1.7G 0 part mmcblk1 179:32 0 7.3G 0 disk |-mmcblk1p1 179:33 0 122M 0 part /boot `-mmcblk1p2 179:34 0 6.5G 0 part / mmcblk1boot0 179:64 0 4M 1 disk mmcblk1boot1 179:96 0 4M 1 disk zram0 253:0 0 50M 0 disk /var/log zram1 253:1 0 417M 0 disk [SWAP] Edited September 4, 2020 by admin_from_Mars Link to comment Share on other sites More sharing options...
admin_from_Mars Posted September 7, 2020 Author Share Posted September 7, 2020 balbes150 replied to my topic in TV boxes： There is no support for NAND in the main kernel. Link to comment Share on other sites More sharing options...
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