分区	描述
Label	Purpose of this partition
Modem	Partition for modem
Fsc	Cookie partition to store Modem File System’s cookies.
Ssd	Partition for ssd diag module. stores the encrypted RSA keys
sbl1	Partition for secondary boot loader
sbl1bak	Back up Partition for secondary boot loader
Rpm	Partition for rpm image
Rpmbak	Back up Partition for rpm image
Tz	Partition for tz image
tzbak	Back up Partition for tz image
Hyp	Partition for hypervisor image
hypbak	Back up Partition for hypervisor image
Dsp	Partition for adsp dymanic loaders image
modemst1	Copy of Modem File System (Encrypted)
modemst2	Copy of Modem File System (Encrypted)
DDR	Partition for DDR.
Fsg	olden copy or backup of Modem File System (Encrypted). Also used to pre-populate the file system.
Sec	Sec.dat contains fuse settings, mainly for secure boot and oem setting
splash	The splash screen is displayed during the apps bootloader (also called the LK). The display driver in LK will read the splash image data from a separate eMMC partition named as ’splash’
aboot	Partition for apps boot loader
abootbak	Back up Partition for apps boot loader
boot	This is the boot partition of your android device,It includes the android kernel and the ramdisk.
recovery	This is specially designed for backup. The recovery partition can be considered as an alternative boot partition
devinfo	Device information including:iis_unlocked, is_tampered, is_verified, charger_screen_enabled, display_panel, bootloader_version, radio_version All these attirbutes are set based on some specific conditions and written on devinfo partition,.
system	This partition contains the entire Android OS, other than the kernel and the ramdisk. This includes the Android GUI and all the system applications that come pre-installed on the device
cache	This is the partition where Android stores frequently accessed data and app components
persist	Partition entry for persist image. which contains data which shouldn’t be changed after the device shipped, for example: calibration data of chips(wifi, bt, camera, etc.), certificates and other security related files.
misc	This partition contains miscellaneous system settings in form of on/off switches. These settings may include CID (Carrier or Region ID), USB configuration and certain hardware settings etc
keystore	Partition for keystore service.
config	Partition needed during display panel initialization. More info at Display_panel_configuration_in_Device_Tree
oem	"It is meant for storing OEM specific info. Customer in this case can decide whether he wants to keep this partition or not typically reserved partitions are kept for future use
limits	Partition to store LMh params on 8976 target. LMh (Limits management) driver in SBL writes the LMh HW trimmed data into separate partition and uses the same data for later reboots
mota	Backup partition for M ota upgrade
devcfg	Partition needed by TZ for M upgrades.
Dip	Partition needed for SafeSwitch, feature (FR26255) designed to allow OEMs and carriers to address new smartphone theft bill issues.
mdtp	Partition needed for SafeSwitch, feature (FR26255) designed to allow OEMs and carriers to address new smartphone theft bill issues.
userdata	Partition for userdata image
cmnlib	Verified boot feature introduced in M needLK to load cmnlib corresponding partitions
keymaster	Verified boot feature introduced in M needs LK to load keymaster from corresponding partitions
syscfg	Syscfg is internal testing for Vmin and CPR characterization
mcfg	All MBNs place holder in flash. Specific MBN would be loaded by mcfg image based on the SIM/Carrier.
msadp	used for modem debug policy
apdp	used for persisting the debug policy. “Debug policy” is used to better support development and debug on secure/fuse-blown devices One instance of the debug policy will be signed for the AP
dpo	This partition will store a policy override