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readme: Add more information for flashing

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Document the steps needed to create a SPI Pi and to flash the ROM.
This commit is contained in:
Tim Crawford
2020-02-06 15:42:01 -07:00
committed by Tim Crawford
parent 672648dcf0
commit 27f1dd18f7
2 changed files with 102 additions and 2 deletions
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52
README.md
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@@ -28,7 +28,57 @@ source ~/.cargo/env
./scripts/qemu.sh
```
### Flashing firmware manually is not recommended for the normal user. For the advanced user, there is a script flash.sh which takes the same arguments as build.sh
## Flashing
**Flashing firmware manually is *not* recommended for the normal user!**
### Internal programmer
Use this method for flashing a system already running System76 Open Firmware.
```
./scripts/flash.sh <model>
```
### External programmer
Use this method for first-time flashing or flashing a bricked system.
#### Creating a SPI Pi
SPI Pi is a Raspberry Pi used to flash the SPI ROM. To create a SPI Pi:
- Get a Raspberry Pi 2 or 3 with Ubuntu 16.04
- Hook up a SPI clip to the SPI Pi
- The SPI Pi's SPI pinout can be found here: https://pinout.xyz/pinout/spi#
- The pinout of a SPI rom can be found here: https://www.totalphase.com/media/wysiwyg/soic8-pinout.png
- If you need more instructions, you should not be hooking up the SPI clip
- Connect the SPI Pi's SPI clip to the SPI ROM, ensuring pin 1 of the clip aligns with pin 1 on the ROM
- On the SPI Pi, run the following commands:
```
sudo apt install flashrom
git clone https://github.com/system76/firmware-open.git firmware
```
#### Flashing with a SPI Pi
1. Turn off the computer
2. Remove the bottom panel
3. Attach the clip to the SPI ROM chip
4. Connect to the Raspberry Pi and wait it for boot
```
sudo tio -b 115200 /dev/ttyUSB0
```
5. From the RPi session, test that the chip is detected.
```
cd firmware
./scripts/spipi.sh -r backup.rom
```
6. From the host, flash the firmware
```
SPIPI=<user@spipi> ./scripts/spipi-flash.sh <model>
```
## Contents

52
README.md.in
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@@ -28,4 +28,54 @@ source ~/.cargo/env
./scripts/qemu.sh
```
### Flashing firmware manually is not recommended for the normal user. For the advanced user, there is a script flash.sh which takes the same arguments as build.sh
## Flashing
**Flashing firmware manually is *not* recommended for the normal user!**
### Internal programmer
Use this method for flashing a system already running System76 Open Firmware.
```
./scripts/flash.sh <model>
```
### External programmer
Use this method for first-time flashing or flashing a bricked system.
#### Creating a SPI Pi
SPI Pi is a Raspberry Pi used to flash the SPI ROM. To create a SPI Pi:
- Get a Raspberry Pi 2 or 3 with Ubuntu 16.04
- Hook up a SPI clip to the SPI Pi
- The SPI Pi's SPI pinout can be found here: https://pinout.xyz/pinout/spi#
- The pinout of a SPI rom can be found here: https://www.totalphase.com/media/wysiwyg/soic8-pinout.png
- If you need more instructions, you should not be hooking up the SPI clip
- Connect the SPI Pi's SPI clip to the SPI ROM, ensuring pin 1 of the clip aligns with pin 1 on the ROM
- On the SPI Pi, run the following commands:
```
sudo apt install flashrom
git clone https://github.com/system76/firmware-open.git firmware
```
#### Flashing with a SPI Pi
1. Turn off the computer
2. Remove the bottom panel
3. Attach the clip to the SPI ROM chip
4. Connect to the Raspberry Pi and wait it for boot
```
sudo tio -b 115200 /dev/ttyUSB0
```
5. From the RPi session, test that the chip is detected.
```
cd firmware
./scripts/spipi.sh -r backup.rom
```
6. From the host, flash the firmware
```
SPIPI=<user@spipi> ./scripts/spipi-flash.sh <model>
```