From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] lib: Add CONFIG_FDT_IGNORE_FIXUP_MEMORY_NODE
Date: Tue, 8 Apr 2014 10:54:31 +0900 [thread overview]
Message-ID: <CABMQnVLwmkxBX0Wqbe3rqn_QGknEqoaLC4wzTffgjbn0vNp-1w@mail.gmail.com> (raw)
In-Reply-To: <20140407174152.GI23803@bill-the-cat>
Hi,
2014-04-08 2:41 GMT+09:00 Tom Rini <trini@ti.com>:
> On Mon, Apr 07, 2014 at 08:53:39AM +0200, Wolfgang Denk wrote:
>> Dear Nobuhiro Iwamatsu,
>>
>> In message <1396846600-15386-1-git-send-email-nobuhiro.iwamatsu.yj@renesas.com> you wrote:
>> > Usually, when CONFIG_OF_LIBFDT is enabled, U-Boot is set to
>> > the FDT memory information that is set in the U-Boot. This patch
>> > disables this behavior.
>> >
>> > Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
>> > ---
>> > README | 8 ++++++++
>> > arch/arm/lib/bootm-fdt.c | 2 ++
>> > 2 files changed, 10 insertions(+)
>>
>> Please explain why you would want to do this. To me it makes no
>> sense. Either U-Boot knows the correct memory size, then it should
>> pass it to Linux. Or it does not, then U-Boot should be fixed.
>>
>> Also, I object that your implementation is ARM specific. If such a
>> feature gets added, it should be architecture independent.
>
> This has shown up before in the context of platforms with >4GB memory
> and we "correct" the node by reducing the system memory, which is
> incorrect. I agree this needs to be done for more than just ARM
> however.
It is one of the reasons of this patch that you wrote.
Thanks,
Nobuhiro
>
> --
> Tom
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
--
Nobuhiro Iwamatsu
next prev parent reply other threads:[~2014-04-08 1:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-07 4:56 [U-Boot] [PATCH] lib: Add CONFIG_FDT_IGNORE_FIXUP_MEMORY_NODE Nobuhiro Iwamatsu
2014-04-07 6:53 ` Wolfgang Denk
2014-04-07 17:41 ` Tom Rini
2014-04-08 1:54 ` Nobuhiro Iwamatsu [this message]
2014-04-08 1:50 ` Nobuhiro Iwamatsu
2014-04-08 13:05 ` Wolfgang Denk
2014-04-08 16:17 ` Tom Rini
2014-04-08 16:39 ` thomas.langer at lantiq.com
2014-04-09 3:20 ` Masahiro Yamada
2014-04-09 12:27 ` Tom Rini
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