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Xiaomi Redmi Note 8 Pro (xiaomi-begonia): Difference between revisions

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Add unbricking guide
m Add missing reference to bypass utility
Line 101: Line 101:
* Python3: <code>pyusb pyserial json5</code>
* Python3: <code>pyusb pyserial json5</code>
* SP Flash Tool (tested with version 5.2208)
* SP Flash Tool (tested with version 5.2208)
* [https://github.com/MTK-bypass/bypass_utility Mediatek Bypass utility]
* Known working partitions (from backup or [https://forum.xda-developers.com/t/rom-10-0-unofficial-lineageos-17-1-begonia-begoniain.4072137/ Android ROM])
* Known working partitions (from backup or [https://forum.xda-developers.com/t/rom-10-0-unofficial-lineageos-17-1-begonia-begoniain.4072137/ Android ROM])
* MT6785 scatter file
* MT6785 scatter file

Revision as of 12:20, 24 May 2022

Xiaomi Redmi Note 8 Pro
Redmi Note 8 Pro running Weston
Redmi Note 8 Pro running Weston
Manufacturer Xiaomi
Name Redmi Note 8 Pro
Codename xiaomi-begonia
Released 2019
Hardware
Chipset Mediatek MT6785 (Helio G90T)
CPU Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G76 MC4
Display 1080 x 2340
Storage 64/128/256 GB
Memory 6/8 GB
Architecture aarch64
Software
Original software Android 9.0, MIUI 11
postmarketOS
Category testing
Pre-built images no
Mainline no
postmarketOS kernel 4.14.218
Unixbench Whet/Dhry score 5577.1
Features
Flashing
Works
USB Networking
Works
Internal storage
No data
SD card
No data
Battery
No data
Screen
Works
Touchscreen
Works
Multimedia
3D Acceleration
Broken
Audio
Broken
Camera
Broken
Camera Flash
No data
Connectivity
WiFi
Partial
Bluetooth
Broken
GPS
Broken
NFC
No data
Modem
Calls
Broken
SMS
Broken
Mobile data
Broken
Miscellaneous
FDE
No data
USB OTG
Works
HDMI/DP
No data
Sensors
Accelerometer
Broken
Magnetometer
No data
Ambient Light
No data
Proximity
No data
Hall Effect
No data
Haptics
No data
Barometer
No data


Contributors

Maintainer(s)

Users owning this device


LED/Torch/Screen brightness/Vibrator

(all files below are in /sys/class/leds)

  • Notification LED: white/
  • Torch: torch-light0/ and torch-light1/
  • Screen brightness: lcd-backlight/
  • Vibrator: vibrator/

How to enter flash mode

Unlocking the bootloader

Sign up for a Mi Account, register your device in the settings, and wait for a week. More info

Before you go any further

Please read Redmi Note 8 Pro XDA Megathread

Entering recovery

Volume Up + Power

Entering fastboot

Volume Down + Power

Installation

!!! Install CFW 2.0

Redmi Note 8 Pro doesn't quite like custom ROMs normally, so you have to flash a few blank files to get different custom ROMs to work.

  • Download CFW2.0 and unzip it.
  • Go to a folder with your device's codename in it.
  • Run !_FLASH_IT_L.sh on Linux/macOS or !_FLASH_IT_W.bat on Windows.
  • After this, follow the next steps.

Via fastboot

  • pmbootstrap init
  • pmbootstrap install
  • pmbootstrap flasher flash_rootfs
  • pmbootstrap flasher flash_kernel
  • fastboot reboot

Via zip

  • pmbootstrap init
  • pmbootstrap install --android-recovery-zip
  • pmbootstrap export
  • Transfer the zip to the device
    • adb push /tmp/postmarketOS-export/pmos-xiaomi-begonia.zip /sdcard
  • Flash the zip
  • Reboot

Unbricking

If something went terribly wrong (eg. boot.img doesn't contain valid DTB) your device will hard-brick. Fortunately these days it's pretty easy to unbrick the device.

Requirements (GNU/Linux):

Steps:

  1. Run the exploit
  2. Connect the device via USB and hold Volume Up (+)
  3. When "Protection disabled" message appears, open SP Flash Tool
  4. Select partition images that you want to write and click Download
  5. After green checkmark image appears, restart your phone

Misc

Andoid memory map

$ sudo cat /proc/iomem
0011bb80-0011bbff : /qos@0011bb80
10001000-10001fff : /scpsys@10001000
1000d000-1000dfff : pwrap
10012000-10012fff : /dvfsrc@10012000
10017000-10017fff : sys_timer_base
1020e000-1020efff : /emi@10219000
10219000-10219fff : /emi@10219000
1021a000-1021afff : /device_mpu_low@1021a000
10226000-10226fff : /emi@10219000
10228000-1022bfff : /gce_mbox@10228000
10230000-10231fff : /dramc@10230000
10234000-10234fff : /dramc@10230000
10235000-10235fff : /emi@10219000
10236000-10236fff : /dramc@10230000
10238000-10239fff : /dramc@10230000
10240000-10241fff : /dramc@10230000
10244000-10244fff : /dramc@10230000
10245000-10245fff : /emi@10219000
10246000-10246fff : /dramc@10230000
10248000-10249fff : /dramc@10230000
10400000-10427fff : sspm_base
10440000-1044ffff : cfgreg
10450000-104500ff : mbox0_base
10451000-10451007 : mbox0_ctrl
10460000-104600ff : mbox1_base
10461000-10461007 : mbox1_ctrl
10470000-104700ff : mbox2_base
10471000-10471007 : mbox2_ctrl
10480000-104800ff : mbox3_base
10481000-10481007 : mbox3_ctrl
10500000-105bffff : /scp@10500000
105c0000-105c2fff : /scp@10500000
105c4000-105c4fff : /scp@10500000
105d4000-105d9fff : /scp@10500000
10600000-1060ffff : /adsp@10600000
10610000-10617fff : /adsp@10600000
10630000-10638fff : /adsp@10600000
11000080-110000ff : /i2c0@11007000
11000100-1100017f : /i2c1@11008000
11000180-110002ff : /i2c2@11009000
11000300-1100037f : /i2c3@1100f000
11000380-110004ff : /i2c4@11011000
11000500-1100057f : /i2c5@11016000
11000580-1100067f : /i2c6@11005000
11000680-1100077f : /i2c7@1101a000
11000780-110007ff : /i2c8@1101b000
11000800-1100087f : /i2c9@11015000
11000880-110008ff : /dma-controller@11000880
11000900-1100097f : /dma-controller@11000880
11000980-110009ff : /dma-controller@11000880
11000a00-11000a7f : /dma-controller@11000880
11001000-11001fff : /auxadc@11001000
11002000-1100201f : serial
11003000-1100301f : serial
11005000-11005fff : /i2c6@11005000
11007000-11007fff : /i2c0@11007000
11008000-11008fff : /i2c1@11008000
11009000-11009fff : /i2c2@11009000
1100a000-1100afff : /spi0@1100a000
1100f000-1100ffff : /i2c3@1100f000
11010000-11010fff : /spi1@11010000
11011000-11011fff : /i2c4@11011000
11012000-11012fff : /spi2@11012000
11013000-11013fff : /spi3@11013000
11015000-11015fff : /i2c9@11015000
11016000-11016fff : /i2c5@11016000
11018000-11018fff : /spi4@11018000
11019000-11019fff : /spi5@11019000
1101a000-1101afff : /i2c7@1101a000
1101b000-1101bfff : /i2c8@1101b000
1101d000-1101dfff : /spi6@1101d000
1101e000-1101efff : /spi7@1101e000
11201000-11203fff : mac
11210000-11210fff : /mt6785-afe-pcm@11210000
11270000-112722ff : /ufshci@11270000
13040000-1304ffff : 13040000.mali
14017000-14017fff : /smi_larb0@14017000
14018000-14018fff : /smi_larb1@14018000
14019000-14019fff : /smi_common@14019000
15021000-15021fff : /smi_larb5@15021000
1502f000-1502ffff : /smi_larb4@1502f000
16000000-16000fff : /vdec_gcon@16000000
16010000-16010fff : /smi_larb2@16010000
16025000-16025fff : /vdec_gcon@16000000
17010000-17010fff : /smi_larb3@17010000
17020000-17020fff : /venc_gcon@17000000
18000000-180fffff : AXI-BUS
19180000-19180fff : /apu_dvfs@19180000
1a001000-1a001fff : /smi_larb6@1a001000
1a002000-1a002fff : /smi_larb7@1a002000
40000000-4c3fffff : System RAM
  40080000-415fffff : Kernel code
  41b70000-4281cfff : Kernel data
4c800000-4cdfffff : System RAM
4d000000-55ffffff : System RAM
56700000-6fffffff : System RAM
74240000-77feffff : System RAM
78000000-7bdbffff : System RAM
7e010000-7eebffff : System RAM
7ffc0000-8bffffff : System RAM
8d100000-8effffff : System RAM
8f300000-8f3fffff : System RAM
90000000-9f7effff : System RAM
9ff00000-bbffffff : System RAM
bc400000-bcffffff : System RAM
bd000000-bd2fffff : AXI-BUS
bd300000-bd55ffff : System RAM
bfff0000-bfffafff : System RAM
c0000000-ffdfffff : System RAM
fff00000-1bfffefff : System RAM

Booting process

More info

1. BROM (Boot ROM)

Boots when power is applied to SoC. Initializes flash storage and starts preloader

2. PL (Preloader)

Initializes basic devices like usb, gpio, timers, etc. If Volume Up (+) is held, PL will hand controll back to BROM wth EDL (Emergency Download Mode).

3. LK (Little Kernel)

Displays logo and verifies some partitions (TODO: which partitions). If it fails to verify partition, it won't continue.
!IMPORTANT! LK WILL USE DTB (Device Tree Blob) FOUND IN BOOT.IMG which means that if DTB is invalid, the device will be hard-bricked

4. Linux

Additional info

See also