UFS2.1

UFS 2.1全称Universal Flash Storage 2.1
它有两个数据通道,全双工的工作模式
0通道收发:UFS_RX0_M/P UFS_TX0_M/P
1通道收发:UFS_RX1_M/P UFS_TX1_M/P
1.理论带宽比较
eMMC5.0 400MB/s
eMMC5.1 600MB/s
UFS2.0 5.8Gbps
UFS2.1 11.6Gbps
下载androbench5测试UFS的速度
https://pan.baidu.com/s/1kUEL40n

主要产商:三星,东芝,sk

2.分区
高通平台手机
# ls -l /dev/block/platform/soc/1da4000.ufshc/by-name
total 0
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 abl_a -> /dev/block/sde10
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 abl_b -> /dev/block/sde26
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 apdp -> /dev/block/sde36
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 bluetooth_a -> /dev/block/sde6
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 bluetooth_b -> /dev/block/sde22
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 boot_a -> /dev/block/sde12
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 boot_b -> /dev/block/sde28
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 cdt -> /dev/block/sdd1
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 cmnlib64_a -> /dev/block/sde14
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 cmnlib64_b -> /dev/block/sde30
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 cmnlib_a -> /dev/block/sde13
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 cmnlib_b -> /dev/block/sde29
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 ddr -> /dev/block/sdd2
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 devcfg_a -> /dev/block/sde15
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 devcfg_b -> /dev/block/sde31
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 devinfo -> /dev/block/sde34
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 dip -> /dev/block/sde35
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 dpo -> /dev/block/sde38
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 dsp_a -> /dev/block/sde9
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 dsp_b -> /dev/block/sde25
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 frp -> /dev/block/sda5
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 fsc -> /dev/block/sdf4
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 fsg -> /dev/block/sdf3
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 hyp_a -> /dev/block/sde3
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 hyp_b -> /dev/block/sde19
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 itc -> /dev/block/sdd3
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 keymaster_a -> /dev/block/sde11
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 keymaster_b -> /dev/block/sde27
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 keystore -> /dev/block/sda4
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 limits -> /dev/block/sde40
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 logdump -> /dev/block/sde44
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 logfs -> /dev/block/sde42
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 mdtp_a -> /dev/block/sde8
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 mdtp_b -> /dev/block/sde24
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 mdtpsecapp_a -> /dev/block/sde7
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 mdtpsecapp_b -> /dev/block/sde23
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 misc -> /dev/block/sda3
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 modem_a -> /dev/block/sde5
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 modem_b -> /dev/block/sde21
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 modemst1 -> /dev/block/sdf1
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 modemst2 -> /dev/block/sdf2
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 msadp -> /dev/block/sde37
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 persist -> /dev/block/sda2
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 pmic_a -> /dev/block/sde4
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 pmic_b -> /dev/block/sde20
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 rpm_a -> /dev/block/sde1
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 rpm_b -> /dev/block/sde17
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 sec -> /dev/block/sde33
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 splash -> /dev/block/sde39
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 ssd -> /dev/block/sda1
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 sti -> /dev/block/sde43
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 storsec -> /dev/block/sde45
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 system_a -> /dev/block/sda6
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 system_b -> /dev/block/sda7
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 toolsfv -> /dev/block/sde41
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 tz_a -> /dev/block/sde2
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 tz_b -> /dev/block/sde18
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 userdata -> /dev/block/sda8
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 vendor_a -> /dev/block/sde16
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 vendor_b -> /dev/block/sde32
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 xbl_a -> /dev/block/sdb1
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 xbl_b -> /dev/block/sdc1
--------------------------------------------------------------------------
主要的分区挂载 cat fstab.qcom
/dev/block/bootdevice/by-name/system     /                  ext4  ;android系统镜像文件
/dev/block/bootdevice/by-name/userdata   /data              ext4  
/dev/block/bootdevice/by-name/misc       /misc              emmc
/dev/block/bootdevice/by-name/modem      /firmware          vfat
/dev/block/bootdevice/by-name/bluetooth  /bt_firmware       vfat
/dev/block/bootdevice/by-name/dsp        /dsp               ext4
/dev/block/bootdevice/by-name/persist    /persist           ext4

;boot.img
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 boot_a -> /dev/block/sde12
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 boot_b -> /dev/block/sde28
;system.img
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 system_a -> /dev/block/sda6
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 system_b -> /dev/block/sda7
;persist.img
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 persist -> /dev/block/sda2
;mdtp.img
lrwxrwxrwx 1 root root 15 1970-01-01 00:55 mdtp_a -> /dev/block/sde8
lrwxrwxrwx 1 root root 16 1970-01-01 00:55 mdtp_b -> /dev/block/sde24