linux-kernel - Re: [External] Re: [PATCH v1] ARM: dts: Fix 64MiB OpenBMC flash layout and aspeed-ast2600-evb.dts

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Date:   Fri, 16 Apr 2021 15:35:01 +0800
From:   Lei Yu <yulei.sh@...edance.com>
To:     Joel Stanley <joel@....id.au>
Cc:     Troy Lee <troy_lee@...eedtech.com>,
        John Wang <wangzhiqiang.bj@...edance.com>,
        Rob Herring <robh+dt@...nel.org>,
        Andrew Jeffery <andrew@...id.au>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/ASPEED MACHINE SUPPORT" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/ASPEED MACHINE SUPPORT" 
        <linux-aspeed@...ts.ozlabs.org>,
        open list <linux-kernel@...r.kernel.org>, leetroy@...il.com
Subject: Re: [External] Re: [PATCH v1] ARM: dts: Fix 64MiB OpenBMC flash
 layout and aspeed-ast2600-evb.dts

On Fri, Apr 16, 2021 at 11:03 AM Joel Stanley <joel@....id.au> wrote:
>
> On Tue, 16 Mar 2021 at 08:59, Troy Lee <troy_lee@...eedtech.com> wrote:
> >
> > Aspeed AST2600 u-boot requires 600KiB+ flash space. Sharing the same
> > openbmc-flash-layout-64.dtsi requires to resize the flash partition.
> >
> > The updated flash layout as follows:
> > - u-boot: 896 KiB
> > - u-boot-env: 128 KiB
> > - kernel: 9MiB
> > - rofs: 32 MiB
> > - rwfs: 22 MiB
>
> Changing the 64MB layout will break the systems that are already using
> this layout. I'll get the Bytedance people to chime in, as theirs is
> the only system using this layout so far.
>
> John, Lei?

Because the kernel's offset is updated, several other changes are required:
1. The related offsets, which is already sent to
https://gerrit.openbmc-project.xyz/c/openbmc/meta-phosphor/+/39343
2. The u-boot patch to update the `bootm` address and make sure it
only applies to the 64MiB layout.

Without the above two changes, I would suggest holding the merge.

-- 
BRs,
Lei YU