MTK platform partition meaning

Pre-loader

• Pre-loader image
• Handles all the download and secure boot procedure
  

       DSP_BL

• DSP Boot Loader
  

        MBR、EBR1、EBR2

• Ext4 file system partition index table
  

       PMT

• Partition management table
  

       NvRam

• Stores the hardware related information, such as calibration data, MAC address, IMEI … etc
  

       SECCFG and SECSTATIC

• Reserved for the security platform used
  

    protect1 or protect_f

• store SIM LOCK
  

    protect2 or protect_s

• backup SIM LOCK
  

    pGPT

• Partition management table, compared with MBR
  

    sgpt

• backup of pgpt
  

    oemkeystore and keystore

• image authentication key for verified boot, not used yet
  

    tee1

• Trusted Excution Environment(https://www.trustonic.com/technology/trustzone-and-tee)
  

    tee2

• backup of tee1
  

     U-boot/LK

• Second loader image
• Handles most hardware initializations and bring-up entire linux kernel
  

     Boot image

• Linux kernel image and it's root file system
  

     Recovery

• Recovery kernel image and it's root file system
• Handles all the system recovery and firmware update functionalities
  

    SEC_RO or SECRO

• Reserved for the security platform used
  

     Misc

• Used for the recovery procedure (power loss)
  

     Logo

• Boot-up logo image
  

     EXPDB

• Store Exception database
  

     System

• android system image
  

     Cache

• For  Android internal used
• Store Android internal cache data or web cache data
  

    User data

• Used for Android system to store user data such as user contacts, settings, installed applications … etc
  

     FAT/intsd

• Internal sdcard on emmc
  

      OTP

• Otp(one time program) area on emmc
  

   flashinfo

• flash tool download information
  

     BMTPOOL

• Handles Bad Block Management（nandflash used and reserved on emmc）
  

   PARA

• save parameter for recovery
  

   FRP

• factory reset for protect , used for stolen phones
  

   NVDATA

• store data in data/nvram/
  

   PROINFO

• a nvram partition, store one struct default, can be added
  

   md1img, md1dsp,md1ARM7, md3img

• For Android M, MD image have switched to MD standalone partition, all Modem images will be load fROM the partition: md1img, md1dsp, md1arm7 and md3img
  

   scp1,scp2

• system control processor, used for recovery fail
  

   lk1,lk2

• used for the case of update lk throught OTA fail
  

   persist

• store data which will be stable for a long time
  

   metadata

• store master key for data encryption
  

   nvcfg

• nvram config, controlled by mtk_NVCONFIG_PARTITION_SUPPORT, not used yet
  

   custom

• customization partition, controlled by MTK_CIP_SUPPORT
  

   efuse

• download BB chip's efuse
  

   ppl

• Privacy protection lock，used for mobile phone antitheft