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From: Guenter Roeck <linux@roeck-us.net>
To: Xuetao Guan <gxt@pku.edu.cn>
Cc: linux-kernel@vger.kernel.org, Guan Xuetao <gxt@mprc.pku.edu.cn>,
	Chen Gang <gang.chen.5i5j@gmail.com>,
	Grant Likely <grant.likely@linaro.org>
Subject: Re: 回复： Re: 回复： Re: 回复： Re: 回复： Status of 'unicore32' architecture in Linux kernel
Date: Sat, 06 Sep 2014 10:25:48 -0700	[thread overview]
Message-ID: <540B439C.8070204@roeck-us.net> (raw)
In-Reply-To: <501661250.62198.1409897580592.JavaMail.root@bj-mail03.pku.edu.cn>

On 09/04/2014 11:13 PM, Xuetao Guan  wrote:
>
> ----- Guenter Roeck <linux@roeck-us.net> 写道：
>> On 09/03/2014 01:32 AM, Xuetao Guan  wrote:
>>>
>> [ ... ]
>>
>>>> Please try the following patch. That seems to do it.
>>>> I am sure it can be improved, but it is a start.
>>>>
>>>> Thanks,
>>>> Guenter
>>>
>>> Thanks. I'll test it.
>>> BTW, Qemu codestyle is different, and tab should be replaced with blanks.
>>>
>>
>> Here is where I am. User space code (busybox) was compiled
>> using the unicore toolchain available on the web.
>>
>> ...
>> serio: i8042 KBD port at 0x6eb00060,0x6eb00064 irq 22
>> mousedev: PS/2 mouse device common for all mice
>> Enable UniCore-F64 support.
>> Warning: unable to open an initial console.
>> Freeing unused kernel memory: 1156K (c0408000 - c0529000)
>>
>> Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
>>
>> ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
>>
>> The kernel tries to execute the init program, which fails with SIGSEGV.
>> I confirmed that the init program is loaded and starts to execute.
>>
>> Any idea what might cause such a problem ?
>>
>> Thanks,
>> Guenter
>>
> 'slink /init             /bin/busybox 777 0 0' should be inserted in initramfs config
> Also, I recommend compile busybox statically for initramfs.
>
> I need more information, including full kmsg and initramfs configs
>

Hi,

I made everything I have available at http://server.roeck-us.net/qemu/unicore32/.
I tried multiple variants for creating the root file system, including the one
on https://github.com/gxt/UniCore32.git and the one using mkrootfs.sh in
the link above. No difference - I always see the same crash. Note that the
'init' program is loading, but crashes with above error (0x0000000b is SIGSEGV
unless I am missing something).

Note that I used the latest qemu for unicore from upstream sources; I was unable
to compile it from git@github.com:gxt/QEMU.git. Qemu configuration did not seem
to make a difference. The toolchain was extracted from uc4-1.0.5-hard.tgz.

Hope this helps,
Guenter


  reply	other threads:[~2014-09-06 17:26 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-31 23:51 Status of 'unicore32' architecture in Linux kernel Guenter Roeck
2014-09-01  4:00 ` Chen Gang
2014-09-02 14:03 ` 回复： " Xuetao Guan 
2014-09-02 15:58   ` Guenter Roeck
2014-09-03  0:09     ` 回复： " Xuetao Guan 
2014-09-03  1:52       ` Guenter Roeck
2014-09-03  3:58       ` Guenter Roeck
2014-09-03  8:32         ` 回复： " Xuetao Guan 
2014-09-05  5:52           ` Guenter Roeck
2014-09-05  6:13             ` 回复： " Xuetao Guan 
2014-09-06 17:25               ` Guenter Roeck [this message]
2014-09-08 12:57                 ` 回复： " Xuetao Guan 
2014-09-08 13:35                   ` Guenter Roeck
2014-09-09  0:58                     ` 回复： " Xuetao Guan 
2014-09-09  2:06                       ` Guenter Roeck

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