[PATCH 0/6] Add support for fwumdata

[Kory Maincent]

On Tue, 02 Dec 2025 18:28:25 +0100
Kory Maincent <kory.maincent at bootlin.com> wrote:

> Add a new fwumdata tool to allows users to read, display, and modify FWU
> (Firmware Update) metadata from Linux userspace. It provides functionality
> similar to fw_printenv/fw_setenv but for FWU metadata. Users can view
> metadata, change active/previous bank indices, modify bank states, and set
> image acceptance flags. Configuration is done via fwumdata.config file.
> 
> Made a few change to mkfwumdata tool along the way.

I just noticed that I should have added an output example:
$ ./fwumdata -l
FWU Metadata:
	Version:            2
	Active Index:       0
	Previous Index:     1
	CRC32:              0x1f21ff7b
	Metadata Size:      120 bytes
	Descriptor Offset:  16
	Bank States:
		Bank 0: accepted (0xfc)
		Bank 1: accepted (0xfc)

	Firmware Store Descriptor:
		Number of Banks:       2
		Number of Images:      1
		Image Entry Size:      80
		Bank Info Entry Size:  24

	Images:
		Image 0:
			Image Type GUID:  65ae85ad-1fb3-0b46-8c5d-285543aa6eab
			Location GUID:    51513491-da07-2a4f-9bea-375ea53b1b5c
			Banks:
				Bank 0:
					Image GUID:  cb2df442-f929-6a44-a374-672d92eb2aa7
					Accepted:    yes (1)
				Bank 1:
					Image GUID:  a839a18f-395c-484f-83b8-0354077c8f9f
					Accepted:    yes (1)


Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com