[Xiaomi Poco F1 Guides, News, & Discussion] scholbert:
Hi,

i started to gather some informations about the internals of the F1 and how the interal storage is arranged on these devices.

The Poco F1 uses a UFS component on the mainboard with 64GB/128GB/256GB capacity.

E.g. for the 128GB variants i found specific part numbers:

SKhynix H28S8Q302CMR

Samsung KLUDG4U1EA-B0C1

Unfortunately there a no detailed datasheet available for these components, as they seem to be confidential.

The sector sizes are 4096Bytes on these parts. The over all capacity varies depending on model.

Anyway, UFS technology allows to create several LUNs inside the chip and thats how it all shows up in underlying linux/android system (see the attached whitepaper for details as well).

After i had a look in the stock firmware package, i could easily put things together and get information about all partitions in detail.

/dev/block/sda -> LUN 0 - HLOS LUN

pre: 24k, next: 1M-24k
/dev/block/sda1	partition label="switch" size_in_kb="16" type="6A4AFEF7-0D3F-453A-8A48-6373F67FFFF0" bootable="false" readonly="false" filename="dummy.img" (all zero)
/dev/block/sda2	partition label="ssd" size_in_kb="32" type="2C86E742-745E-4FDD-BFD8-B6A7AC638772" bootable="false" readonly="false" filename=""
/dev/block/sda3	partition label="bk01" size_in_kb="440" type="7B00B63B-DB10-4A44-B544-14D344F55DAC" bootable="false" readonly="false" filename=""
/dev/block/sda4	partition label="bk02" size_in_kb="256" type="53E5B8DE-C6A6-4767-875F-6B72ECBED0B0" bootable="false" readonly="false" filename=""
/dev/block/sda5	partition label="bk03" size_in_kb="256" type="7C7E2B25-D52C-4829-BA6E-76408DF1B3CE" bootable="false" readonly="false" filename=""
pre: 1M, next: 32-1M
/dev/block/sda6	partition label="keystore" size_in_kb="512" type="DE7D4029-0F5B-41C8-AE7E-F6C023A02B33" bootable="false" readonly="false" filename=""
/dev/block/sda7	partition label="frp" size_in_kb="512" type="91B72D4D-71E0-4CBF-9B8E-236381CFF17A" bootable="false" readonly="false" filename=""
/dev/block/sda8	partition label="bk04" size_in_kb="2048" type="3FB510F6-4E73-49E7-9BDB-F6FEABA6086A" bootable="false" readonly="false" filename=""
/dev/block/sda9	partition label="misc" size_in_kb="4096" type="82ACC91F-357C-4A68-9C8F-689E1B1A23A1" bootable="false" readonly="false" filename="misc.img"
/dev/block/sda10	partition label="logfs" size_in_kb="8192" type="BC0330EB-3410-4951-A617-03898DBE3372" bootable="false" readonly="false" filename="logfs_ufs_8mb.bin"
/dev/block/sda11	partition label="oops" size_in_kb="16384" type="C549751F-0A51-4334-A85E-7D3F4FDB3127" bootable="false" readonly="false" filename=""
pre: 32M, next: 32M
/dev/block/sda12	partition label="devinfo" size_in_kb="16384" type="65ADDCF4-0C5C-4D9A-AC2D-D90B5CBFCD03" bootable="false" readonly="false" filename=""
/dev/block/sda13	partition label="bk05" size_in_kb="16384" type="4EF51EBC-5BF2-410B-8970-C2CE87227DF6" bootable="false" readonly="false" filename=""
pre: 64M, next: 2*64M
/dev/block/sda14	partition label="persist" size_in_kb="65536" type="6C95E238-E343-4BA8-B489-8681ED22AD0B" bootable="false" readonly="false" filename="" sparse="true"
/dev/block/sda15	partition label="persistbak" size_in_kb="65536" type="6C95E238-E343-4BA8-B489-8681ED22AD0B" bootable="false" readonly="false" filename="" sparse="true"
pre: 3*64M, next: 3*64M=192M
/dev/block/sda16	partition label="logdump" size_in_kb="65536" type="5AF80809-AABB-4943-9168-CDFC38742598" readonly="false" bootable="false" filename=""
/dev/block/sda17	partition label="minidump" size_in_kb="131072" type="71D24153-E4E2-4275-815C-08E10959803B" readonly="false" bootable="false" filename=""
pre: 6*64M, next: 18*64M=832M
/dev/block/sda18	partition label="cust" size_in_kb="851968" type="C3008246-512A-4FEB-8A51-068FA4AD5F6D" bootable="false" readonly="false" filename="cust.img" sparse="true"
/dev/block/sda19	partition label="recovery" size_in_kb="65536" type="9D72D4E4-9958-42DA-AC26-BEA7A90B0434" bootable="false" readonly="false" filename="recovery.img"
/dev/block/sda20	partition label="cache" size_in_kb="262144" type="5594C694-C871-4B5F-90B1-690A6F68E0F7" bootable="false" readonly="false" filename="cache.img" sparse="true"
pre: 24*64M, next: left
/dev/block/sda21	partition label="userdata" size_in_kb="4194304" type="1B81E7E6-F50D-419B-A739-2AEEF8DA3335" bootable="false" readonly="false" filename="userdata.img" sparse="true"

/dev/block/sdb -> LUN 1 - Boot LUN A

pre: 24k
/dev/block/sdb1	partition label="xbl_config_a" size_in_kb="512" type="5A325AE4-4276-B66D-0ADD-3494DF27706A" bootable="false" readonly="true" filename="xbl_config.img"
/dev/block/sdb2	partition label="xbl_a" size_in_kb="7168" type="DEA0BA2C-CBDD-4805-B4F9-F428251C3E98" bootable="false" readonly="true" filename="xbl.img"
partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" bootable="false" readonly="true" filename=""

/dev/block/sdc -> LUN 2 - Boot LUN B

pre: 24k
/dev/block/sdc1	partition label="xbl_config_b" size_in_kb="512" type="5A325AE4-4276-B66D-0ADD-3494DF27706A" bootable="false" readonly="true" filename="xbl_config.img"
/dev/block/sdc2	partition label="xbl_b" size_in_kb="7168" type="DEA0BA2C-CBDD-4805-B4F9-F428251C3E98" bootable="false" readonly="true" filename="xbl.img"
partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" bootable="false" readonly="true" filename=""

/dev/block/sdd -> LUN 3 - OTP LUN

/dev/block/sdd1	partition label="bk31" size_in_kb="32" type="D37A3651-9C07-467D-9898-E83881B4B1EC" bootable="false" readonly="true"
/dev/block/sdd2	partition label="cdt" size_in_kb="128" type="A19F205F-CCD8-4B6D-8F1E-2D9BC24CFFB1" bootable="false" readonly="true" filename=""
/dev/block/sdd3	partition label="bk32" size_in_kb="864" type="97312B22-8EDC-45E2-853A-1FE3D41083E4" bootable="false" readonly="true" filename=""
/dev/block/sdd4	partition label="ddr" size_in_kb="1024" type="20A0C19C-286A-42FA-9CE7-F64C3226A794" bootable="false" readonly="true"
/dev/block/sdd5	partition label="bk33" size_in_kb="1024" type="6CE93C62-BC7F-4D47-97CD-0095F8EED0FC" bootable="false" readonly="true" filename=""
partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" bootable="false" readonly="true" filename=""

/dev/block/sde -> LUN 4 - Protected RO LUN

pre: 24k, next: 1M-24k
/dev/block/sde1	partition label="sec" size_in_kb="32" type="303E6AC3-AF15-4C54-9E9B-D9A8FBECF401" bootable="false" readonly="true" filename=""
/dev/block/sde2	partition label="limits" size_in_kb="32" type="10A0C19C-516A-5444-5CE3-664C3226A794" bootable="false" readonly="true" filename="dummy.img"
/dev/block/sde3	partition label="bk41" size_in_kb="168" type="2191E897-1B50-410A-9190-1ADD6203484B" bootable="false" readonly="true" filename=""
/dev/block/sde4	partition label="qupfw_a" size_in_kb="128" type="21D1219F-2ED1-4AB4-930A-41A16AE75f7F" bootable="false" readonly="true" filename="qupfw.img"
/dev/block/sde5	partition label="qupfw_b" size_in_kb="128" type="7E2F513D-7D9E-4C69-8607-FF9C796896FF" bootable="false" readonly="true" filename="qupfw.img"
/dev/block/sde6	partition label="apdp" size_in_kb="256" type="E6E98DA2-E22A-4D12-AB33-169E7DEAA507" bootable="false" readonly="true" filename=""
/dev/block/sde7	partition label="msadp" size_in_kb="256" type="ED9E8101-05FA-46B7-82AA-8D58770D200B" bootable="false" readonly="true" filename=""
pre: 1M, next: 16-1M
/dev/block/sde8	partition label="vbmeta" size_in_kb="128" type="4B7A15D6-322C-42AC-8110-88b7DA0C5D77" bootable="false" readonly="true" filename=""
/dev/block/sde9	partition label="bk42" size_in_kb="128" type="9D30B727-48F6-4BF2-A513-11C4D4850950" bootable="false" readonly="true" filename=""
/dev/block/sde10	partition label="storsec_a" size_in_kb="128" type="02DB45FE-AD1B-4CB6-AECC-0042C637DEFA" bootable="false" readonly="true" filename="storsec.img"
/dev/block/sde11	partition label="storsec_b" size_in_kb="128" type="E59F3F13-8F26-42C4-B75C-70C3CA15F4A7" bootable="false" readonly="true" filename="storsec.img"
/dev/block/sde12	partition label="devcfg_a" size_in_kb="256" type="F65D4B16-343D-4E25-AAFC-BE99B6556A6D" bootable="false" readonly="true" filename="devcfg.img"
/dev/block/sde13	partition label="devcfg_b" size_in_kb="256" type="EFD49359-6F37-4167-AEC5-DA3B23317A2B" bootable="false" readonly="true" filename="devcfg.img"
/dev/block/sde14	partition label="aop_a" size_in_kb="512" type="D69E90A5-4CAB-0071-F6DF-AB977F141A7F" bootable="false" readonly="true" filename="aop.img"
/dev/block/sde15	partition label="aop_b" size_in_kb="512" type="05D825D4-7213-4455-BF7F-7A8186CEB325" bootable="false" readonly="true" filename="aop.img"
/dev/block/sde16	partition label="bk43" size_in_kb="512" type="68852B76-70DF-4C1F-A268-8C339DD79F1E" bootable="false" readonly="true" filename=""
/dev/block/sde17	partition label="bk44" size_in_kb="512" type="ED08AB2A-50FA-4BF3-95A9-5F38802FB8FD" bootable="false" readonly="true" filename=""
/dev/block/sde18	partition label="cmnlib_a" size_in_kb="1024" type="73471795-AB54-43F9-A847-4F72EA5CBEF5" bootable="false" readonly="true" filename="cmnlib.img"
/dev/block/sde19	partition label="cmnlib_b" size_in_kb="1024" type="B8AF4F43-5797-4642-ACA9-AFFA3DC066AF" bootable="false" readonly="true" filename="cmnlib.img"
/dev/block/sde20	partition label="cmnlib64_a" size_in_kb="1024" type="8EA64893-1267-4A1B-947C-7C362ACAAD2C" bootable="false" readonly="true" filename="cmnlib64.img"
/dev/block/sde21	partition label="cmnlib64_b" size_in_kb="1024" type="3864BA83-61FF-4B82-A749-9ED7560D0503" bootable="false" readonly="true" filename="cmnlib64.img"
/dev/block/sde22	partition label="keymaster_a" size_in_kb="1024" type="A11D2A7C-D82A-4C2F-8A01-1805240E6626" bootable="false" readonly="true" filename="keymaster.img"
/dev/block/sde23	partition label="keymaster_b" size_in_kb="1024" type="E8DF5A85-A0BF-4FD0-9B9A-DECB191EECCB" bootable="false" readonly="true" filename="keymaster.img"
/dev/block/sde24	partition label="bluetooth" size_in_kb="1024" type="6CB747F1-C2EF-4092-ADD0-CA39F79C7AF4" bootable="false" readonly="true" filename="bluetooth.img"
/dev/block/sde25	partition label="bk45" size_in_kb="1024" type="1079AD2F-F4BC-488D-A185-32723E482E91" bootable="false" readonly="true" filename=""
/dev/block/sde26	partition label="hyp_a" size_in_kb="1024" type="E1A6A689-0C8D-4CC6-B4E8-55A4320FBD8A" bootable="false" readonly="true" filename="hyp.img"
/dev/block/sde27	partition label="hyp_b" size_in_kb="1024" type="DF718C12-3599-4F84-881F-89271F769A8F" bootable="false" readonly="true" filename="hyp.img"
/dev/block/sde28	partition label="dip" size_in_kb="1024" type="4114B077-005D-4E12-AC8C-B493BDA684FB" bootable="false" readonly="true" filename=""
/dev/block/sde29	partition label="bk46" size_in_kb="1024" type="71B28EC7-DF02-41E8-921F-725ECD024CD4" bootable="false" readonly="true" filename=""
pre: 16M, next: 16M
/dev/block/sde30	partition label="sti" size_in_kb="2048" type="AA9A5C4C-4F1F-7D3A-014A-22BD33BF7191" bootable="false" readonly="true" filename=""
/dev/block/sde31	partition label="toolsfv" size_in_kb="2048" type="97745ABA-135A-44C3-9ADC-05616173C24C" bootable="false" readonly="true" filename=""
/dev/block/sde32	partition label="abl_a" size_in_kb="2048" type="BD6928A1-4CE0-A038-4F3A-1495E3EDDFFB" bootable="false" readonly="true" filename="abl.img"
/dev/block/sde33	partition label="abl_b" size_in_kb="2048" type="9F68DAA1-EAAE-41F9-8C5F-69E15CC6AEB1" bootable="false" readonly="true" filename="abl.img"
/dev/block/sde34	partition label="tz_a" size_in_kb="4096" type="A053AA7F-40B8-4B1C-BA08-2F68AC71A4F4" bootable="false" readonly="true" filename="tz.img"
/dev/block/sde35	partition label="tz_b" size_in_kb="4096" type="1D5075D8-363A-4125-916B-C8B3E97B995C" bootable="false" readonly="true" filename="tz.img"
pre: 32M, next: 32M
/dev/block/sde36	partition label="fsg" size_in_kb="8192" type="638FF8E2-22C9-E33B-8F5D-0E81686A68CB" bootable="false" readonly="true" filename=""
/dev/block/sde37	partition label="dtbo" size_in_kb="8192" type="24D0D418-D31D-4D8D-aC2C-4D4305188450" bootable="false" readonly="true" filename=""
/dev/block/sde38	partition label="bk47" size_in_kb="8192" type="D388D29F-1309-4487-8944-A61DF37365BC" bootable="false" readonly="true" filename=""
/dev/block/sde39	partition label="spunvm" size_in_kb="8192" type="E42E2B4C-33D0-429B-b1EF-D341C547022C" bootable="false" readonly="true" filename=""
pre: 64M, next: 64M
/dev/block/sde40	partition label="bk48" size_in_kb="16384" type="B7EED6B5-020D-428F-A588-EF43148AF032" bootable="false" readonly="true" filename=""
/dev/block/sde41	partition label="bk49" size_in_kb="16384" type="7EF491C1-813C-4C8A-AF57-C968D72460BF" bootable="false" readonly="true" filename=""
/dev/block/sde42	partition label="splash" size_in_kb="32768" type="AD99F201-DC71-4E30-9630-E19EEF553D1B" bootable="false" readonly="true" filename=""
pre: 2*64M, next: 64M
/dev/block/sde43	partition label="logo" size_in_kb="32768" type="E5947DDB-0FDF-4FF0-A1E2-E408BC3DA4A7" bootable="false" readonly="true" filename="logo.img"
/dev/block/sde44	partition label="dsp" size_in_kb="32768" type="7EFE5010-2A1A-4A1A-B8BC-990257813512" bootable="false" readonly="true" filename="dsp.img"
pre: 3*64M, next: 64M
/dev/block/sde45	partition label="boot" size_in_kb="65536" type="20117F86-E985-4357-B9EE-374BC1D8487D" bootable="false" readonly="true" filename="boot.img"
pre: 4*64M, next: 3*64M=192M
/dev/block/sde46	partition label="modem" size_in_kb="196608" type="EBD0A0A2-B9E5-4433-87C0-68B6B72699C7" bootable="false" readonly="true" filename="modem.img"
pre: 7*64M, next: 1G
/dev/block/sde47	partition label="vendor" size_in_kb="1048576" type="97D7B011-54DA-4835-B3C4-917AD6E73D74" bootable="false" readonly="true" filename="vendor.img" sparse="true"
pre: 7*64M+1G, next: 3G
/dev/block/sde48	partition label="system" size_in_kb="3145728" type="97D7B011-54DA-4835-B3C4-917AD6E73D74" bootable="false" readonly="true" filename="system.img" sparse="true"
Total: 7*64M+4G=4544M, left: left 64M
partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" bootable="false" readonly="true" filename=""

/dev/block/sdf -> LUN 5 - Protected RW LUN

/dev/block/sdf1	partition label="fsc" size_in_kb="256" type="57B90A16-22C9-E33B-8F5D-0E81686A68CB" bootable="false" readonly="false" filename=""
/dev/block/sdf2	partition label="bk51" size_in_kb="744" type="694BE4BC-8A47-4D18-870A-EB07C9D07CB2" bootable="false" readonly="false" filename=""
/dev/block/sdf3	partition label="bk52" size_in_kb="1024" type="3B02C43F-8F67-49BE-86FE-D8D030F2CCA6" bootable="false" readonly="false" filename=""
/dev/block/sdf4	partition label="ImageFv" size_in_kb="2048" type="17911177-C9E6-4372-933C-804B678E666F" bootable="false" readonly="false" filename="imagefv.elf"
/dev/block/sdf5	partition label="bk53" size_in_kb="4096" type="DD6DC330-95B2-4244-B45F-A52078EA7F67" bootable="false" readonly="false" filename=""
/dev/block/sdf6	partition label="modemst1" size_in_kb="8192" type="EBBEADAF-22C9-E33B-8F5D-0E81686A68CB" bootable="false" readonly="false" filename=""
/dev/block/sdf7	partition label="modemst2" size_in_kb="8192" type="0A288B1F-22C9-E33B-8F5D-0E81686A68CB" bootable="false" readonly="false" filename=""
partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" bootable="false" readonly="false" filename=""

Furthermore i found out that fastboot is able to handle all these partitions.

Try:

fastboot getvar all

... and you'll see every single partition is shown with type and size.

Though there are no LUNs specified here, fastboot does not need them... the LUNs are only visible in the kernels device structure.

That's it by now.

Just thought it may be useful for others, as i found nothing specific about it ;)

EDIT:

HLOS (High-Level Operating System) = Android OS

abl = android bootloader, signed part of uefi

tz = trustzone

xbl = extensable bootloader

cdt = configuration data table

frp = factory reset partition, signed part of uefi

imagefv = lzma compressed bitmaps (battery), signed part of uefi

P.S.: For a better overview, find the partiton info as a text file attached.

Cheers,

scholbert