the kernel
1. Does not set the memory map properly. or
2. The address window not set up properly.
Xiangyu:
Could you help to look into this issue.
2011/4/24 Roman Mamedov <r...@romanrm.ru>
> Hello,
>
> I am continuing my experiments with pushing the limits of installed RAM
> size on
> Fuloong/Yeeloong :)
>
> Now I got a 2GB DDR2-800 stick from Hynix, it is a dual-side dual-rank
> module:
> http://www.nix.ru/include/view-photo.html?good_id=87993&pid=2258
>
> With it installed, the Fuloong does not boot with a very strange symptom:
> it looks like the kernel can't read anything from the HDD(SSD). The error
> is
> "sda: unknown partition table", so no "/dev/sda2" is found, and the root
> can't
> be mounted: http://romanrm.ru/pics/2011/2011-04-24-fuloong-2gb-boot.jpg
>
> The only way I can boot up with this 2GB RAM stick, is if I first go to the
> PMON, enter "set -t highmemsize 768", then load and boot the kernel. That
> way
> it boots up and then works perfectly fine, but of course only 1 GB of RAM
> is
> visible to the kernel.
>
> My guess is that RAM areas are not being set up properly by either PMON or
> the
> kernel with more than 1GB of RAM, and specifically here the DMA reads from
> the
> IDE controller can not be performed correctly.
>
> The PMON version is LM6004-1.3.6, kernels tried are 2.6.38.2 and 2.6.38.3.
>
> --
> With respect,
> Roman
>
--
晏华
龙芯梦兰 软件部
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