usage: rpi-eeprom-config [-h] [-a APPLY] [-c CONFIG] [-e] [-o OUT] [-d DIGEST] [-p PUBKEY] [-x]
                         [-b BOOTCODE] [-t TIMESTAMP] [--cacertder CACERTDER] [--debug]
                         [eeprom]

Bootloader EEPROM configuration tool for the Raspberry Pi 4 and Raspberry Pi 5.
Operating modes:

1. Outputs the current bootloader configuration to STDOUT if no arguments are
   specified OR the given output file if --out is specified.

   rpi-eeprom-config [--out boot.conf]

2. Extracts the configuration file from the given 'eeprom' file and outputs
   the result to STDOUT or the output file if --output is specified.

   rpi-eeprom-config pieeprom.bin [--out boot.conf]

3. Writes a new EEPROM image replacing the configuration file with the contents
   of the file specified by --config.

   rpi-eeprom-config --config boot.conf --out newimage.bin pieeprom.bin

   The new image file can be installed via rpi-eeprom-update
   sudo rpi-eeprom-update -d -f newimage.bin

4. Applies a given config file to an EEPROM image and invokes rpi-eeprom-update
   to schedule an update of the bootloader when the system is rebooted.

   Since this command launches rpi-eeprom-update to schedule the EEPROM update
   it must be run as root.

   sudo rpi-eeprom-config --apply boot.conf [pieeprom.bin]

   If the 'eeprom' argument is not specified then the latest available image
   is selected by calling 'rpi-eeprom-update -l'.

5. The '--edit' parameter behaves the same as '--apply' except that instead of
   applying a predefined configuration file a text editor is launched with the
   contents of the current EEPROM configuration.

   Since this command launches rpi-eeprom-update to schedule the EEPROM update
   it must be run as root.

   The configuration file will be taken from:
       * The blconfig reserved memory nvmem device
       * The cached bootloader configuration 'vcgencmd bootloader_config'
       * The current pending update - typically /boot/firmware/pieeprom.upd

   sudo -E rpi-eeprom-config --edit [pieeprom.bin]

   To cancel the pending update run 'sudo rpi-eeprom-update -r'

   The default text editor is nano and may be overridden by setting the 'EDITOR'
   environment variable and passing '-E' to 'sudo' to preserve the environment.

6. Signing the bootloader config file.
   Updates an EEPROM binary with a signed config file (created by rpi-eeprom-digest) plus
   the corresponding RSA public key.

   Requires Python Cryptodomex libraries and OpenSSL. To install on Raspberry Pi OS run:-
   sudo apt install python3-pycryptodome

   rpi-eeprom-digest -k private.pem -i bootconf.txt -o bootconf.sig
   rpi-eeprom-config --config bootconf.txt --digest bootconf.sig --pubkey public.pem --out pieeprom-signed.bin pieeprom.bin

   Currently, the signing process is a separate step so can't be used with the --edit or --apply modes.

See 'rpi-eeprom-update -h' for more information about the available EEPROM images.

positional arguments:
  eeprom                Name of EEPROM file to use as input

options:
  -h, --help            show this help message and exit
  -a, --apply APPLY     Updates the bootloader to the given config plus latest available EEPROM
                        release.
  -c, --config CONFIG   Name of bootloader configuration file
  -e, --edit            Edit the current EEPROM config
  -o, --out OUT         Name of output file
  -d, --digest DIGEST   Signed boot only. The name of the .sig file generated by rpi-eeprom-digest
                        for config.txt
  -p, --pubkey PUBKEY   Signed boot only. The name of the RSA public key file to store in the
                        EEPROM
  -x, --extract         Extract the modifiable files (boot.conf, pubkey, signature)
  -b, --bootcode BOOTCODE
                        Signed boot 2712 only. The name of the customer signed bootcode.bin file
                        to store in the EEPROM
  -t, --timestamp TIMESTAMP
                        Set the timestamp in the EEPROM image file
  --cacertder CACERTDER
                        The name of a CA Certificate DER encoded file to store in the EEPROM
  --debug               Debug logging for this tool