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doc: rework doc/mkeficapsule.1

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* Indicate the location of the directory for EFI capsules.
* Improve the readability.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt 2023-01-22 11:27:10 +01:00
parent f4ece689db
commit a13b92ae6f
1 changed files with 11 additions and 10 deletions
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doc/mkeficapsule.1
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@ -11,22 +11,23 @@ mkeficapsule \- Generate EFI capsule file for U-Boot
.RI [ options ] " " [ image-blob ] " " capsule-file
.SH "DESCRIPTION"
The
.B mkeficapsule
command is used to create an EFI capsule file for use with the U-Boot
EFI capsule update.
A capsule file may contain various type of firmware blobs which
are to be applied to the system and must be placed in the specific
directory on the UEFI system partition.
An update will be automatically executed at next reboot.
command is used to create an EFI capsule file to be used by U-Boot for firmware
updates.
A capsule file may contain various types of firmware blobs which are to be
applied to the system.
If a capsule file is placed in the /EFI/CapusuleUpdate directory of the EFI
system partition, U-Boot will try to execute the update at the next reboot.
Optionally, a capsule file can be signed with a given private key.
In this case, the update will be authenticated by verifying the signature
before applying.
Additionally, an empty capsule file can be generated for acceptance or
rejection of firmware images by a governing component like an Operating
System. The empty capsules do not require an image-blob input file.
Additionally, an empty capsule file can be generated to indicate the acceptance
or rejection of firmware images by a governing component like an operating
system.
Empty capsules do not require an image-blob input file.
.B mkeficapsule
takes any type of image files when generating non empty capsules, including: