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Black cat takes you to learn UFS protocol Chapter 18: how UFS configures logical units (Lu Management)
2022-07-06 06:20:00 【Black cat senior】
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1 characteristic
Different LU Different properties can be configured , For example, its size 、 Security features, etc .
ordinary LU adopt LUN Addressing , Four names LU adopt W-LUN Addressing . Every LU The inside is from the address 0 At the beginning .
about ufs Come on , The following features must be supported :
(1)LU The number of is determined by bMaxNumberLU decision , Every UFS Most support 2 individual Boot LU.
(2) There is one. RPMB LU,RPMB LU The interior can also be divided into 4 Small RPMB Area (RPMB region 0 - RPMB region 3).
For each LU It has the following common characteristics :
(1) Address spaces are independent of each other , The addresses are from 0 Start
(2)LU Size can be matched
Every LU You can also set different storage characteristics :
(1)Default type: General storage features
(2)System Code type: An area where important system files are rarely updated and stored , For example, system files 、 System image, etc
(3)Non-Persistent type: An area for storing zero hour data ( for example tmp Directory file 、swap Partition file, etc )
(4
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