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https://github.com/inindev/rock-5b

debian arm64 linux for the rock 5b
https://github.com/inindev/rock-5b

arm arm64 debian debian-linux device-tree kernel linux nvme rock-5b u-boot

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debian arm64 linux for the rock 5b

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# rock-5b
#### *Debian ARM64 Linux for the Radxa Rock 5 Model B*

This Debian ARM64 Linux image is built directly from official packages using the Debian [Debootstrap](https://wiki.debian.org/Debootstrap) utility, see: https://github.com/inindev/rock-5b/blob/main/debian/make_debian_img.sh#L131

Most patches are directly available from the Debian repos using the built-in ```apt``` package manager, see: https://github.com/inindev/rock-5b/blob/main/debian/make_debian_img.sh#L343-L350

* Note: The kernel in this bundle is from kernel.org and will not get updates from debian.


---
### debian bookworm setup


**1. download image**
```
wget https://github.com/inindev/rock-5b/releases/download/v12-6.7-rc7/rock-5b_bookworm-v12-6.7-rc7.img.xz
```


**2. determine the location of the target micro sd card**

* before plugging-in device
```
ls -l /dev/sd*
ls: cannot access '/dev/sd*': No such file or directory
```

* after plugging-in device
```
ls -l /dev/sd*
brw-rw---- 1 root disk 8, 0 Jul 15 10:33 /dev/sda
```
* note: for mac, the device is ```/dev/rdiskX```


**3. in the case above, substitute 'a' for 'X' in the command below (for /dev/sda)**
```
sudo su
xzcat rock-5b_bookworm-v12-6.7-rc7.img.xz > /dev/sdX
sync
```

#### when the micro sd has finished imaging, eject it and boot the rock 5b to finish setup


**4. login account**
```
user: debian
pass: debian
```


**5. take updates**
```
sudo apt update
sudo apt upgrade
```


**6. create account & login as new user**
```
sudo adduser youruserid
echo ' ALL=(ALL) NOPASSWD: ALL' | sudo tee /etc/sudoers.d/
sudo chmod 440 /etc/sudoers.d/
```


**7. lockout and/or delete debian account**
```
sudo passwd -l debian
sudo chsh -s /usr/sbin/nologin debian
```

```
sudo deluser --remove-home debian
sudo rm /etc/sudoers.d/debian
```


**8. change hostname (optional)**
```
sudo nano /etc/hostname
sudo nano /etc/hosts
```


---
### installing on m.2 ssd /dev/nvme0n1 media


**1. while booted from mmc, download and copy the image file on to the ssd media**
```
wget https://github.com/inindev/rock-5b/releases/download/v12-6.7-rc7/rock-5b_bookworm-v12-6.7-rc7.img.xz
sudo su
xzcat rock-5b_bookworm-v12-6.7-rc7.img.xz > /dev/nvme0n1
sync
```


**2. remove mmc media and reboot**


---
### booting from spi nor flash

**1. boot from removable mmc**

[Follow the instructions](https://github.com/inindev/rock-5b#debian-bookworm-setup) for creating bootable mmc media.
Insert the mmc media and boot the device.

Note: The mmc media has a one-time reboot during first setup as it expands to the size of the mmc media.


**2. install mtd-utils**

once linux is booted from the removable mmc, install mtd-utils
```
sudo apt update
sudo apt -y install mtd-utils
```


**3. erase spi flash**
```
sudo flash_erase /dev/mtd0 0 0
sudo flash_erase /dev/mtd1 0 0
sudo flash_erase /dev/mtd2 0 0
sudo flash_erase /dev/mtd3 0 0
```


**4. write u-boot to spi flash**
```
wget https://github.com/inindev/rock-5b/releases/download/v12-6.7-rc7/idbloader.img
wget https://github.com/inindev/rock-5b/releases/download/v12-6.7-rc7/u-boot.itb
sudo flashcp -vA idbloader.img /dev/mtd0
sudo flashcp -vA u-boot.itb /dev/mtd2
```


Once the spi flash has been written, the boot sequence should prefer removable mmc media if present, otherwise boot m.2 nvme ssd.


---
### building debian bookworm arm64 for the rock-5b from scratch


The build script builds native arm64 binaries and thus needs to be run from an arm64 device such as an odroid m1 running
a 64 bit arm linux. The initial build of this project used a debian arm64 raspberry pi4, but now uses a rock 5b running
debian trixie arm64.


**1. clone the repo**
```
git clone https://github.com/inindev/rock-5b.git
cd rock-5b
```


**2. run the debian build script**
```
cd debian
sudo sh make_debian_img.sh nocomp
```
* note: edit the build script to change various options: ```nano make_debian_img.sh```


**3. the output if the build completes successfully**
```
mmc_2g.img
```

**4. install the kernel**
```
cd debian
sudo sh install_kernel.sh
```
* note: kernel needs to be built and available in the ```../kernel``` directory