lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 12 Jan 2021 12:34:31 -0600
From:   Frank Rowand <>
To:     Viresh Kumar <>
Cc:     Pantelis Antoniou <>,
        Rob Herring <>,,,,
        Vincent Guittot <>,
        Bill Mills <>,,
        Masahiro Yamada <>
Subject: Re: [PATCH V3 2/2] scripts: dtc: Build fdtoverlay and fdtdump tools

On 1/11/21 11:08 PM, Viresh Kumar wrote:
> On 11-01-21, 18:44, Frank Rowand wrote:
>> On 1/7/21 12:25 AM, Viresh Kumar wrote:
>>> We will start building overlays for platforms soon in the kernel and
>>> would need these tools going forward. Lets start building them.
>>> The fdtoverlay program applies (or merges) one ore more overlay dtb
>>> blobs to a base dtb blob. The kernel build system would later use
>>> fdtoverlay to generate the overlaid blobs based on platform specific
>>> configurations.
>>> The fdtdump program prints a readable version of a flat device-tree
>>> file. This is a very useful tool to analyze the details of the overlay's
>>> dtb and the final dtb produced by fdtoverlay after applying the
>>> overlay's dtb to a base dtb.
>> You can calso dump an FDT with:
>>    dtc -O dts XXX.dtb
>> Is this sufficient for the desired functionality, or is there something
>> additional in fdtdump that is needed?

comment 1:

> Not for my usecase at least.

>> If nothing additional needed, and there is no other justification for adding
>> another program, I would prefer to leave fdtdump out.

comment 2:

> Okay, then I will also remove the stale version of fdtdump which is
> already there in kernel since a long time.

I'm confused.  I read comment 1 as saying that fdtdump does provide a feature
that you need to analyze the dtb created by fdtoverlay.  But I read comment 2
as implying that you are accepting that fdtdump will not be added to the
Linux kernel source.


Powered by blists - more mailing lists