linux-kernel - Re: [PATCH] Documentation: x86: boot: reserve type_of

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Message-ID: <5da3593c-1607-9075-e1ac-1e384fd62b93@pengutronix.de>
Date:   Sun, 2 Oct 2022 09:15:09 +0200
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     Borislav Petkov <bp@...en8.de>
Cc:     hpa@...or.com, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        Jonathan Corbet <corbet@....net>, barebox@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH] Documentation: x86: boot: reserve type_of_loader=13 for
 barebox

Hello,

On 02.10.22 00:45, Borislav Petkov wrote:
> On Fri, May 13, 2022 at 04:30:39PM +0200, Ahmad Fatoum wrote:
>> barebox built as EFI payload has been booting Linux on x86 with
>> type_of_loader=0xff since v2015.09.0.
> 
> What is barebox?
> 
> That https://en.wikipedia.org/wiki/Barebox ?

Yes.

> 
> That version number v2015 - am I to understand it that it has been
> booting Linux since the year 2015?
> 
> In any case, it would be useful to explain a bit what it is here.

Release cadence is monthly. Starting with release v2015.09.0,
type_of_loader=0xff was being used. I figured it's about time, we
allocate an ID for it.

> 
>> Reserve 13, the next free id, so this can be used instead.
> 
> Sure, I guess, why not.
> 
> Thx.
Cheers,
Ahmad


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