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Date:   Mon, 30 Oct 2023 12:12:09 -0400
From:   Tom Rini <trini@...sulko.com>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
Cc:     Simon Glass <sjg@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        U-Boot Mailing List <u-boot@...ts.denx.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nick Terrell <terrelln@...com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Will Deacon <will@...nel.org>, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] arm64: boot: Support Flat Image Tree

On Mon, Oct 30, 2023 at 03:35:34PM +0000, Russell King (Oracle) wrote:
> On Sun, Oct 29, 2023 at 05:46:12AM +1300, Simon Glass wrote:
> > Hi Masahiro,
> > 
> > Sure, but that is a separate issue, isn't it? We already support
> > various boot targets in arm64 but not one that includes the DTs, so
> > far as I can see. The old arm 'uImage' target is pretty out-of-date
> > now.
> 
> Does that mean it can be removed? ;)
> 
> I've NAK'd FIT support on 32-bit Arm in the past, and I remain of the
> opinion that boot loader specific packaging of the kernel should not
> be in the kernel but should be external to it - even more so given the
> multi-platform nature of 32-bit Arm kernels.

I'll point it out here rather than Simon. As part of
https://github.com/open-source-firmware FIT is a standard and not "boot
loader specific". And one of the points of a FIT image is that you can
easily support multi-platform kernels in a single file (without
optimizing things further, at a cost in tens of milliseconds on a Pi 3
anyhow) and with user-controlled security.

-- 
Tom

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