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title: Setup Raspberry Pi for flashing with flashrom Tutorial
author: Andreas
date: 2022-01-13 16:24
tags: Raspberry Pi, flashrom
---
In this tutorial, we will go through the steps to setup a Raspberry Pi for flashing with [flashrom](https://www.flashrom.org/).
# Prerequisites
Things you need:
- Raspberry Pi
- Official 5.1V 2.5A Power Supply for Raspberry Pi.
- 16 GB (or more) class 10 MicroSD card for Raspberry Pi OS.
- HDMI cable
- Keyboard and Mouse
This tutorial assumes you're using a GNU/Linux distro for the commands
outside of the Raspberry Pi and are familiar with how to use a terminal.
I'm using a **Raspberry Pi 3 Model B** for this tutorial but any model
supported by Raspberry Pi OS will work fine.
# Install and setup Raspberry Pi OS
Download Raspberry Pi OS (with Desktop is recommended) from
[here](https://www.raspberrypi.com/software/operating-systems/)
Unzip Raspberry Pi OS image:
```sh
unzip IMAGE_NAME.zip
```
Insert the MicroSD card in a reader and check name of MicroSD card:
```sh
sudo fdisk -l
```
Flash the unpacked Raspberry Pi OS image to the MicroSD card:
```sh
sudo dd if=IMAGE_NAME.img of=/dev/YOURSDCARD bs=2M status=progress oflag=sync
```
Connect the peripherals (keyboard, mouse, HDMI, power cable), insert the
MicroSD card and boot the Raspberry Pi and make sure it works.
Make sure all software is updated:
```sh
sudo apt-get update
sudo apt-get dist-upgrade
sudo reboot
```
Check the IP address of your Raspberry Pi:
```sh
ip addr
```
Write down the IP address (if using WiFi see '**inet**' under
'**wlan0**'). It should look something like **192.168.1.11**. You'll
need this IP address later to be able to connect using SSH from another
computer.
Next you need to change some things in the config:
```sh
sudo raspi-config
```
In this menu, select '**3. Interface Options**' and enable the
following options:
```plaintext
SSH
SPI
I2C
```
Reboot the Raspberry Pi once this is done.
Try connecting to the Raspberry Pi from another computer using SSH:
```sh
ssh pi@192.168.1.11
```
Change '**192.168.1.11**' to the IP address you wrote down in earlier
step. When it asks for a password, enter the password for the user
'**pi**'.
From here on you can disconnect all peripherals and do the rest using
SSH.
# Compile flashrom
Clone flashrom git repository:
```sh
git clone https://review.coreboot.org/flashrom.git
```
Compile flashrom:
```sh
cd flashrom
sudo make install CONFIG_ENABLE_LIBUSB0_PROGRAMMERS=no CONFIG_ENABLE_LIBUSB1_PROGRAMMERS=no CONFIG_ENABLE_LIBPCI_PROGRAMMERS=no
sudo cp /usr/local/sbin/flashrom /usr/local/bin/
```
# Raspberry Pi GPIO pinout
**Raspberry Pi 3 Model B** GPIO pinout below. **Raspberry Pi 4** seems
to have the same layout and other models too probably. See GPIO pinout
diagram for your specific Raspberry Pi to be sure.
Note: In flashing tutorials **CS = GPIO08(CE0)** (/dev/spidev0.0)
# Example usage
Read from connected chip:
```sh
sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=32768 -r factory_bios_01.rom -V
```
Read from specified chip:
```sh
sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=32768 -r factory-bios-top-1.bin -c "MX25L3206E/MX25L3208E" -V
```
Write to connected chip:
```sh
sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=32768 -w coreboot.rom -V
```
Write to specified chip:
```sh
sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=32768 -w coreboot.rom -c "MX25L3206E/MX25L3208E" -V
```
Congratulations! We're done. Now you can start flashing [coreboot](https://www.coreboot.org/) rom's.
# Recommended reading
[https://www.raspberrypi.com/](https://www.raspberrypi.com/)\
[https://www.coreboot.org/](https://www.coreboot.org/)\
[https://www.flashrom.org/](https://www.flashrom.org/)
|
