https://github.com/9elements/osfc2019_system76_coreboot

Coreboot payloads shipped for OSFC 2019 Darper Pro
https://github.com/9elements/osfc2019_system76_coreboot

Last synced: 6 days ago
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Coreboot payloads shipped for OSFC 2019 Darper Pro

• Host: GitHub
• URL: https://github.com/9elements/osfc2019_system76_coreboot
• Owner: 9elements
• Created: 2019-08-21T07:00:56.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-08-21T11:49:48.000Z (about 5 years ago)
• Last Synced: 2024-04-11T03:52:07.839Z (7 months ago)
• Language: Go
• Size: 21.8 MB
• Stars: 0
• Watchers: 14
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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# OSFC2019 coreboot payloads

Coreboot payloads shipped for OSFC 2019 Darper Pro.

Precompiled binaries can be found in `binary/`.

The source files are in `src/`.

# LinuxBoot payload

1. Build the GNU/Linux kernel using the defconfig in `src/LinuxBoot/`.

2. Build u-root instructions:

```

u-root -build=bb -initcmd init -defaultsh elvish -files src/mplayer:bin/mplayer -files video.webm:video.webm -o initramfs_u-root.cpio coreboot-app systemboot bootanimation

xz --keep --force --check=crc32 --lzma2=dict=1MiB initramfs_u-root.cpio

```

3. Replace the payload in the vendor firmware:

```

cbfstool firmware.rom remove -n fallback/payload

cbfstool firmware.rom add-payload -f bzImage -n fallback/payload -I initramfs_u-root.cpio.xz

```

# SeaBIOS payload

1. Build SeaBios using the .config in `src/Seabios/`.

2. Replace the payload in the vendor firmware:

```

cbfstool firmware.rom remove -n fallback/payload

cbfstool firmware.rom add -f vgabios.bin -n seavgabios.bin -t raw -r COREBOOT

cbfstool firmware.rom add-payload -f bios.bin.elf -n fallback/payload

```

# Flashing a new firmware

Flashing can be done from a running GNU/Linux using flashrom 1.1:

```

flashrom -pinternal --fmap -i COREBOOT -w firmware.rom

```