[U-Boot] testing u-boot on virtual environment

[Simon Glass]

Hi,

On Fri, Dec 23, 2011 at 5:53 AM, Érico Porto <ericoporto2008 at gmail.com> wrote:
> md 0 gives me in dmesg:
>
>
> [11753.433067] u-boot[4277]: segfault at 0 ip 0805283e sp bfb809f0
> error 4 in u-boot[8048000+1a000]
>
>
> On 12/23/11, Érico Porto <ericoporto2008 at gmail.com> wrote:
>> Thanks!
>>
>> Tried to do some memory display commands but got instant segmentation
>> fault, and tried to run it as root - but then some bad things
>> happened, so now I know no one should run it as root.

Good lesson to learn :-)

There was a revert of the memory map code in cmd_mem.c about a month
ago - if you track that down and un-revert it then md will work for
you.

The real fix is to devise some third meaning of a memory address
(physical address, effective address, ...?) - I did post a suggestion
to the list but no response and I haven't got back to it.

Regards,
Simon

>>
>> I wanted to tryout a memory test algorithm I developed, but it seem
>> u-boot runs with no ram access. If I could findout the ram address
>> where it is located, I think then the 8MB it says it has wouldn't give
>> me segmentation fault...
>>
>> =>version
>>
>> U-Boot 2011.12-rc3 (Dec 23 2011 - 11:07:12)
>> gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
>> GNU ld (GNU Binutils for Ubuntu) 2.21.53.20110810
>> =>printenv
>> baudrate=115200
>> stderr=serial
>> stdin=serial
>> stdout=serial
>>
>> Environment size: 66/8188 bytes
>> =>bdinfo
>> boot_params = 0x00000000
>> DRAM bank   = 0x00000000
>> -> start    = 0x00000000
>> -> size     = 0x08000000
>> FB base     = 0x00000000
>>
>> On 12/23/11, Graeme Russ <graeme.russ at gmail.com> wrote:
>>> Hi Érico
>>>
>>> On 23/12/11 23:46, Érico Porto wrote:
>>>> Hello,
>>>>
>>>> Does anyone know if exists somekind of simulator to run u-boot in test
>>>> mode?
>>>
>>> Have a look at the sandbox 'board' - It allows U-Boot to be run as an
>>> executable in Linux to test non hardware specific code
>>>
>>> do:
>>>
>>> make sandbox_config
>>> make all
>>>
>>> Regards,
>>>
>>> Graeme
>>>
>>
>>
>> --
>> Érico V. Porto
>>
>
>
> --
> Érico V. Porto
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