linux-kernel - Re: [PATCH 0/2] efi: Enhance capsule loader to support signed Quark images

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Message-ID: <4014c5e6-b5a0-7552-166f-a42992532c09@siemens.com>
Date:   Wed, 15 Feb 2017 19:59:30 +0100
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Matt Fleming <matt@...eblueprint.co.uk>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        linux-efi@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>,
        "Kweh, Hock Leong" <hock.leong.kweh@...el.com>,
        "Bryan O'Donoghue" <pure.logic@...us-software.ie>
Subject: Re: [PATCH 0/2] efi: Enhance capsule loader to support signed Quark
 images

On 2017-02-15 19:50, Jan Kiszka wrote:
> On 2017-02-15 19:46, Andy Shevchenko wrote:
>> On Wed, Feb 15, 2017 at 8:14 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
>>> See patch 2 for the background.
>>>
>>> Series has been tested on the Galileo Gen2, to exclude regressions, with
>>> a firmware.cap without security header and the SIMATIC IOT2040 which
>>> requires the header because of its mandatory secure boot.
>>
>> Briefly looking to the code it looks like a real hack.
>> Sorry, but it would be carefully (re-)designed.
> 
> The interface that the firmware provides us? That should have been done
> differently, I agree, but I'm not too much into those firmware details,
> specifically when it comes to signatures.
> 
> The Linux code was designed around that suboptimal situation. If there
> are better ideas, I'm all ears.
> 

Expanding CC's as requested by Andy.

Jan

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