Difference between revisions of "Zero/install/eMMC erase"

Revision as of 07:53, 6 December 2021

English

    Radxa Zero >  Installation >  Erase eMMC

This guide describes how to completely erase Radxa Zero's eMMC. Unlike normal PC where they have a well established and documented way of booting, in embedded world it is a bit chaotic and everyone carries their own bootloader and boot sequence. As such it's best to wipe the eMMC completely and have a clean environment before flashing a new image to eMMC.

Requirement

Radxa Zero
A PC/laptop running Windows, Linux, or macOS
USB A to C cable or C to C cable, depending on your host

Windows

First, follow maskrom guide to setup and load factory-loader.img:

You can then click Erase button to erase the eMMC.

Linux & macOS

First, follow maskrom guide to setup and load rz-fastboot-loader.bin.

You are now booted into fastboot mode. Check it by running lsusb:

Bus 001 Device 076: ID 18d1:0d02 Google Inc. USB download gadget  Serial: 1234567890

Now execute the following commands to wipe eMMC:

macOS:

fastboot flashing unlock_critical
fastboot flashing unlock
fastboot erase bootloader
fastboot erase bootloader-boot0
fastboot erase bootloader-boot1
fastboot reboot

Linux:

sudo fastboot flashing unlock_critical
sudo fastboot flashing unlock
sudo fastboot erase bootloader
sudo fastboot erase bootloader-boot0
sudo fastboot erase bootloader-boot1
sudo fastboot reboot

@@ Line 15: / Line 15: @@
 == Windows ==
-===== Step 1: Install drivers =====
+First, follow [[Zero/dev/maskrom#Enable_maskrom | maskrom guide]] to setup and load '''factory-loader.img''':
-Press and hold the USB boot button on the Zero, plug in the USB to PC.
-Download and install [https://github.com/pbatard/libwdi/releases/download/b755/zadig-2.6.exe Zagdig].
-Confirm that the device is <code>GX-CHIP</code>, USB ID is <code>1B8E:C003</code> and choose '''libusb-win32''', then click '''Install Driver'''.
-[[File:Zagdig-libusb.png]]
-[https://dl.google.com/android/repository/usb_driver_r13-windows.zip Download the Android driver] from Google.
-Unzip it and right click the '''.inf''' file to install the driver.
-[[File:Install-win-android-driver.png]]
-===== Step 2: Use RZ USB helper =====
-RZ USB helper is a Windows tool made by Radxa for easy OS installing. Download it from [https://dl.radxa.com/zero/tools/windows/RZ_USB_Boot_Helper_V1.0.0.zip Radxa DL] and unzip everything to a convenient location.
-First locate the USB boot button on the Zero:
-[[File:Zero_usb_boot.jpg | 300px]]
-Hold the button while connect you Radxa Zero to PC. '''Maskrom mode''' should be detected by the tool.
-[[File:Rz-usb-helper-maskrom.png | 500px]]
-Then select the '''factory-loader.img''' from the unzipped folder and click '''Run'''.
 [[File:Rz-usb-helper-fastboot.png | 500px]]
-Finally, click '''Erase''' to erase the eMMC completely.
+You can then click '''Erase''' button to erase the eMMC.
 [[File:Rz-usb-helper-erase.png | 500px]]
 == Linux & macOS  ==
-For Linux and macOS, we use amlogic boot tool to download the bootloader and boot the Zero into the fastboot mode to erase the eMMC.
-===== Step 1: Install pyamlboot tool =====
+First, follow [[Zero/dev/maskrom#Enable_maskrom | maskrom guide]] to setup and load '''rz-fastboot-loader.bin'''.
-macOS:
+You are now booted into fastboot mode. Check it by running '''lsusb''':
-    $ brew install python lsusb libusb
-    $ pip3 install pyamlboot
-Linux:
+ Bus 001 Device 076: ID '''18d1:0d02''' Google Inc. USB download gadget  Serial: 1234567890
-    $ sudo apt install python3-pip
-    $ sudo pip3 install pyamlboot
-Here we are using <code>apt</code> package manager. Please refer to your distro's documentation for help on your distro's package manager.
+Now execute the following commands to wipe eMMC:
-===== Step 2: Install fastboot =====
-Nexus Tools is an installer for the Android SDK Platform Tools package, which includes ADB, Fastboot, and other applications. We use Nexus Tools to install fastboot. If you already have fastboot installed, you can skip this step.
-    $ bash <(curl -s https://raw.githubusercontent.com/corbindavenport/nexus-tools/master/install.sh)
-After it finishes,
-    $ which fastboot
-should return you the install location.
-===== Step 3: Boot into fastboot mode =====
-Press and hold the USB boot button on Zero, plug in it to your computer. '''lsusb''' should see something like:
-    Bus 001 Device 075: ID '''1b8e:c003''' Amlogic, Inc. GX-CHIP
-Download the fastboot loader and run it on Zero
-    $ wget https://dl.radxa.com/zero/images/loader/rz-fastboot-loader.bin
-    $ boot-g12.py rz-fastboot-loader.bin # macOS
-    $ sudo boot-g12.py rz-fastboot-loader.bin # Linux
-It should output something similar to this:
-<pre>
-Firmware Version :
-ROM: 3.2 Stage: 0.0
-Need Password: 0 Password OK: 1
-Writing rz-fastboot-loader.bin at 0xfffa0000...
-[DONE]
-Running at 0xfffa0000...
-[DONE]
-AMLC dataSize=16384, offset=65536, seq=0...
-[DONE]
-AMLC dataSize=49152, offset=393216, seq=1...
-[DONE]
-AMLC dataSize=16384, offset=229376, seq=2...
-[DONE]
-AMLC dataSize=49152, offset=245760, seq=3...
-[DONE]
-AMLC dataSize=49152, offset=294912, seq=4...
-[DONE]
-AMLC dataSize=16384, offset=65536, seq=5...
-[DONE]
-AMLC dataSize=1406320, offset=81920, seq=6...
-[DONE]
-[BL2 END]
-</pre>
-Now lsusb should show the following device:
-    Bus 001 Device 076: ID '''18d1:0d02''' Google Inc. USB download gadget  Serial: 1234567890
-===== Step 4: Wipe the eMMC =====
 macOS:
-    $ fastboot devices
+ fastboot flashing unlock_critical
-    1234567890	fastboot
+ fastboot flashing unlock
-    $ fastboot flashing unlock_critical
+ fastboot erase bootloader
-    $ fastboot flashing unlock
+ fastboot erase bootloader-boot0
-    $ fastboot erase bootloader
+ fastboot erase bootloader-boot1
-    $ fastboot erase bootloader-boot0
+ fastboot reboot
-    $ fastboot erase bootloader-boot1
-    $ fastboot reboot # reboot into maskrom mode
 Linux:
-Run <code>sudo -i</code> and <code>exit</code> before and after the macOS command sequences.
+ sudo fastboot flashing unlock_critical
+ sudo fastboot flashing unlock
-Power cycle your Zero. lsusb should show the following:
+ sudo fastboot erase bootloader
+ sudo fastboot erase bootloader-boot0
-    Bus 001 Device 075: ID '''1b8e:c003''' Amlogic, Inc. GX-CHIP
+ sudo fastboot erase bootloader-boot1
+  sudo fastboot reboot
-the eMMC is wiped and Zero is in maskrom mode now. You can [[zero/install/eMMC#Linux_.26_macOS | install other OS to eMMC]] now.
-If you want to flash Android, please follow the step 1-3 again to enter fastboot mode, which is required for flashing Android.  You can then follow [[zero/install/eMMC_Android | the guide]] to continue.

Difference between revisions of "Zero/install/eMMC erase"

Revision as of 07:53, 6 December 2021

Contents

How to completely erase the Radxa Zero eMMC

Requirement

Windows

Linux & macOS