From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: "Maciej W. Rozycki" <macro@linux-mips.org>,
Huacai Chen <chenhc@lemote.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>,
Paul Burton <paul.burton@mips.com>,
linux-mips@linux-mips.org, linux-mips@vger.kernel.org,
Fuxin Zhang <zhangfx@lemote.com>,
Zhangjin Wu <wuzhangjin@gmail.com>,
Huacai Chen <chenhuacai@gmail.com>
Subject: Re: [PATCH 1/3] MIPS: Loongson: Remove Loongson-2E/2F support
Date: Tue, 05 Nov 2019 21:54:05 +0800 [thread overview]
Message-ID: <0279E7A7-197D-4D6B-9A4B-26E6791372E0@flygoat.com> (raw)
In-Reply-To: <alpine.LFD.2.21.1911032301160.367459@eddie.linux-mips.org>
于 2019年11月4日 GMT+08:00 上午7:08:26, "Maciej W. Rozycki" <macro@linux-mips.org> 写到:
>On Sun, 3 Nov 2019, Huacai Chen wrote:
>
>> Loongson-2E/2F is old, inactive and a bit ugly, so let's remove them
>> and the world will be more comfortable.
>
> People still use them, e.g. I do, and upstream removal causes an issue
>with the need to backport changes not specific to the platform.
>
>If you don't want to maintain the code, then just mark it orphan and
>rely
>on the community to maintain it. If it starts breaking and nobody
>picks
>it to make fixes, then it can be removed. There's no need to rush IMO.
>
>BTW, there used to be a patch somewhere to support more than 512MiB of
>DRAM with the 2E, but I can't find it -- can you help me tracking it
Hi Maciej
It seems like DRAM size issue is a firmware issue rather than kernel issue, some early versions of PMON don't pass highmem size correctly to the Kernel.
Probably you can manually set it in loongson-2ef/common/mem.c？
Currently I can't find any working Fuloong-2E to test but the newest known PMON can be found here[1].
Thanks
[1] https://mirrors4.tuna.tsinghua.edu.cn/loongson/pmon/pmon_2e.bin
https://mirrors4.tuna.tsinghua.edu.cn/loongson/pmon/pmon_2e.bin.md5
--
Jiaxun Yang
next prev parent reply other threads:[~2019-11-05 13:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1572758417-29265-1-git-send-email-chenhc@lemote.com>
2019-11-03 5:20 ` [PATCH 2/3] MIPS: Loongson: Rename LOONGSON1 to LOONGSON32 Huacai Chen
2019-11-03 11:26 ` Huacai Chen
2019-11-03 5:20 ` [PATCH 3/3] MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage Huacai Chen
2019-11-03 5:35 ` Jiaxun Yang
2019-11-03 23:08 ` [PATCH 1/3] MIPS: Loongson: Remove Loongson-2E/2F support Maciej W. Rozycki
2019-11-04 6:05 ` Huacai Chen
2019-11-05 13:54 ` Jiaxun Yang [this message]
2020-02-26 2:38 ` Maciej W. Rozycki
2019-11-04 19:03 ` Paul Burton
2019-11-05 1:14 ` Huacai Chen
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