USE_COM1_AS_CONSOLE=1 not effective

[Joel Sherrill]

AFAIK no one has ever booted RTEMS on a PC using the -kernel option.

Use the boot floppy in rtems-testing git repo and the pc386 script in
sim-scripts in that repo.

On Tue, Jun 14, 2016 at 7:40 PM, Saeed Ehteshamifar <salpha.2004 at gmail.com>
wrote:

> What qemu command are you using?
>
> *-kernel *
> I haven't tried booting RTEMS via grub. How should I make a grub-bootable
> QEMU disk image? The process seems to be a bit tricky; I followed several
> guides on the Internet but none is working. Is there any guide on rtems
> wiki?
>
> Update about kernel config options:
> I tried configuring with *BSP_ENABLE_VGA=0 BSP_ENABLE_COM1_COM4=1
> BSP_USE_COM1_AS_CONSOLE=1*
> and I got the following (still no output to stdio but booting source
> changes!):
> [image: Inline image 1]
>
> On Tue, Jun 14, 2016 at 7:50 PM, Joel Sherrill <joel at rtems.org> wrote:
>
>> Chris might have broken this with his recent changes. But more likely....
>>
>> What qemu command are you using?
>>
>> I think Gedare's problem was that his grubmenu was not updated to this:
>>
>> kernel= (hd0,0)/test.exe --console=/dev/com1
>>
>> Before Chris' recent changes, the line would have read:
>>
>> kernel= (hd0,0)/test.exe --console=com1
>>
>> Notice the missing "/dev/" on --console. It greatly simplified the boot
>> argument parsing but requires boot args to be updated.
>>
>> I asked for Gedare's opinion on another thread as to whether we need
>> to keep backwards compatibility but I don't think he has answered.
>>
>> --joel
>>
>> On Tue, Jun 14, 2016 at 11:22 AM, Saeed Ehteshamifar <
>> salpha.2004 at gmail.com> wrote:
>>
>>> I've just seen Gedare's problem with this also, which was unfortunately
>>> unsolved. :(
>>>
>>> On Tue, Jun 14, 2016 at 6:20 PM, Saeed Ehteshamifar <
>>> salpha.2004 at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> It seems that USE_COM1_AS_CONSOLE=1 is not effective for me. I'm
>>>> configuring RTEMS with this option (bsp: pc386) and as a result, in my BSP
>>>> install directory (specified by --prefix), I have:
>>>>
>>>> *./i386-rtems4.12/pc386/lib/include/bspopts.h:#define
>>>> USE_COM1_AS_CONSOLE 1*
>>>>
>>>> However, when I run the hello example, nothing is output to the screen:
>>>>
>>>> *qemu-system-i386 -kernel $(find . -name hello.exe) -serial stdio
>>>> -monitor null -nographic*
>>>>
>>>> Below is a screenshot of QEMU, which suggests that both Console and
>>>> printk are  using /dev/vgacons. Does this imply that the USE_COM... is
>>>> taken as not effective?
>>>> And how should I correctly configure RTEMS to put the output to COM1
>>>> for pc386?
>>>>
>>>>
>>>> [image: Inline image 1]
>>>>
>>>> Thanks!
>>>>
>>>> Best Regards,
>>>> Saeed
>>>>
>>>
>>>
>>> _______________________________________________
>>> users mailing list
>>> users at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/users
>>>
>>
>>
>
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