Guillaume GARDET
ea3d93c782
OBS-URL: https://build.opensuse.org/package/show/hardware:boot/rpi-eeprom-config?expand=0&rev=1
41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
# Raspberry Pi 4 firmware configuration tool: rpi-eeprom-config
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The Raspberry Pi 4 first level bootloader, capable of USB, SD and network
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booting, is stored on a SPI EEPROM memory. In order to tweak the boot order or
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some of the functionality, a configuration firmware blob has to be flashed into
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the SPI memory. This tool allows extracting and repacking the bootloader
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configuration.
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Note that the bootloader configuration instructions available on the official
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Raspberry Pi 4 documentation[1] don't apply to SUSE/openSUSE as
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'rpi-eeprom-update' isn't supported for security reasons.
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A common usage would look like this:
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# Extract current config
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rpi-eeprom-config /boot/efi/pieeprom.upd > eeprom-config.txt
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# Edit eeprom config
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vi eeprom-config.txt
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# Write new config into firmware binary blob
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rpi-eeprom-config --config eeprom-config.txt \
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--out /boot/efi/pieeprom.upd \
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/boot/efi/pieeprom.upd
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# Regenerate firmware's sha256sum
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sha256sum /boot/efi/pieeprom.upd | cut -d" " -f 1 > /boot/efi/pieeprom.sig
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# Trigger firmware update
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rm /boot/efi/RECOVERY*
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cp /boot/vc/firmware/recovery.bin /boot/efi/.
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# Reboot
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reboot
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Please be mindful of performing every step correctly, failure to do so might
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break boot on the device. Breakage can be fixed following the recovery
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instructions found here: https://www.raspberrypi.org/downloads/
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[1] https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md
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