linux-kernel - Aw: Re: [RFC] arm64: dts: use size of reserved partition for bl2

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Date:   Mon, 3 Apr 2023 15:56:15 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Frank Wunderlich <linux@...web.de>,
        linux-mediatek@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Aw: Re: [RFC] arm64: dts: use size of reserved partition for bl2

> Gesendet: Montag, 03. April 2023 um 14:43 Uhr
> Von: "AngeloGioacchino Del Regno" <angelogioacchino.delregno@...labora.com>
> Il 03/04/23 12:58, Frank Wunderlich ha scritto:
> > From: Frank Wunderlich <frank-w@...lic-files.de>
> >
> > To store uncompressed bl2 more space is required than partition is
> > actually defined.
> >
> > Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
>
> If this doesn't get changed anymore, I'm fine with it... but a question arises:
> did you send patches to add your BPI-r3 board(s) to upstream u-boot?

currently i use the rfb dts for r3 in uboot: arch/arm/dts/mt7986a-sd-rfb.dts

this file in upstream uboot has no partitions defined

https://source.denx.de/u-boot/u-boot/-/blob/master/arch/arm/dts/mt7986a-sd-rfb.dts#L144

but i added them there too and i wrote content by offsets to main device (not to partitions).

https://github.com/frank-w/u-boot/blob/2023-04-bpi/arch/arm/dts/mt7986a-sd-rfb.dts#L154

so yes basicly it needs to be send there too, maybe as additional dts.

regards Frank

> > ---
> > I used the definition i got from mtk used in their SDK uboot.
> >
> > Openwrt uses also the first reserved partition to give bl2 more
> > space:
> >
> > https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/mediatek/dts/mt7986a-bananapi-bpi-r3-nor.dts;h=f597b869abc80d1a73f44ebb85ad4da17376bb52;hb=HEAD#l22
> >
> > so imho it should be same in mainline to not require complex bl2
> > compression.
>
> Regards,
> Angelo
>
>