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The existing options, "--fit" and "--raw," are only used to put a proper GUID in a capsule header, where GUID identifies a particular FMP (Firmware Management Protocol) driver which then would handle the firmware binary in a capsule. In fact, mkeficapsule does the exact same job in creating a capsule file whatever the firmware binary type is. To prepare for the future extension, the command syntax will be a bit modified to allow users to specify arbitrary GUID for their own FMP driver. OLD: [--fit <image> | --raw <image>] <capsule file> NEW: [--fit | --raw | --guid <guid-string>] <image> <capsule file> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
111 lines
2.6 KiB
Groff
111 lines
2.6 KiB
Groff
.\" SPDX-License-Identifier: GPL-2.0+
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.\" Copyright (c) 2021, Linaro Limited
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.\" written by AKASHI Takahiro <takahiro.akashi@linaro.org>
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.TH MAEFICAPSULE 1 "May 2021"
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.SH NAME
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mkeficapsule \- Generate EFI capsule file for U-Boot
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.SH SYNOPSIS
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.B mkeficapsule
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.RI [ options "] " image-blob " " capsule-file
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.SH "DESCRIPTION"
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.B mkeficapsule
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command is used to create an EFI capsule file for use with the U-Boot
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EFI capsule update.
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A capsule file may contain various type of firmware blobs which
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are to be applied to the system and must be placed in the specific
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directory on the UEFI system partition.
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An update will be automatically executed at next reboot.
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Optionally, a capsule file can be signed with a given private key.
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In this case, the update will be authenticated by verifying the signature
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before applying.
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.B mkeficapsule
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takes any type of image files, including:
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.TP
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.I raw image
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format is a single binary blob of any type of firmware.
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.TP
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.I FIT (Flattened Image Tree) image
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format is the same as used in the new uImage format and allows for
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multiple binary blobs in a single capsule file.
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This type of image file can be generated by
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.BR mkimage .
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.PP
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If you want to use other types than above two, you should explicitly
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specify a guid for the FMP driver.
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.SH "OPTIONS"
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One of
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.BR --fit ", " --raw " or " --guid
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option must be specified.
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.TP
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.BR -f ", " --fit
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Indicate that the blob is a FIT image file
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.TP
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.BR -r ", " --raw
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Indicate that the blob is a raw image file
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.TP
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.BI "-g\fR,\fB --guid " guid-string
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Specify guid for image blob type. The format is:
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xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
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The first three elements are in little endian, while the rest
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is in big endian.
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.TP
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.BI "-i\fR,\fB --index " index
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Specify an image index
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.TP
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.BI "-I\fR,\fB --instance " instance
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Specify a hardware instance
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.TP
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.BR -h ", " --help
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Print a help message
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.PP
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With signing,
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.BR --private-key ", " --certificate " and " --monotonic-count
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are all mandatory.
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.TP
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.BI "-p\fR,\fB --private-key " private-key-file
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Specify signer's private key file in PEM
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.TP
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.BI "-c\fR,\fB --certificate " certificate-file
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Specify signer's certificate file in EFI certificate list format
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.TP
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.BI "-m\fR,\fB --monotonic-count " count
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Specify a monotonic count which is set to be monotonically incremented
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at every firmware update.
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.TP
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.B "-d\fR,\fB --dump_sig"
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Dump signature data into *.p7 file
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.PP
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.SH FILES
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.TP
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.I /EFI/UpdateCapsule
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The directory in which all capsule files be placed
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.SH SEE ALSO
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.BR mkimage (1)
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.SH AUTHORS
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Written by AKASHI Takahiro <takahiro.akashi@linaro.org>
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.SH HOMEPAGE
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http://www.denx.de/wiki/U-Boot/WebHome
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