DSP

高通智能机分区表详细解析

2019-07-13 17:45发布

站内文章 / DSP
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很不错的帖子，以前很多firmware里不了解的二进制格式的系统镜像都能知道大概作用了 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          Golden 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

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