Android 驱动（5）---MTK 平台分区表
16lz
2021-01-23
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
-
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