regarding pci vga card output with powerpc

regarding pci vga card output with powerpc

[urwithsudheer]

[-- Attachment #1: Type: text/plain, Size: 1098 bytes --]

Hello All,
I am working with a pci based vga card. I have connected the vga card 
next to the  pci slot of my target processor on the baseboard.
I have connected a monitor to the vga card.
When i boot linux from minicom, i could see all the kernel log messages 
on both the minicom and vga card monitor. But on the vga monitor, i 
could not see any messages after asking for login as below:
.
.

Mounting filesystems
Running depmod
Setting up networking on loopback device:
Setting up networking on eth0:
eth0: PHY is Marvell 88E11x1 (1410cc2)
Adding static route for default gateway to 192.168.3.1:
Setting nameserver to 192.168.0.1 in /etc/resolv.conf:
Starting inetd:

login:


Though i am entering my login and passwd at the minicom, nothing comes 
on to the vga monitor. But i am able to write to vga monitor using the 
following commands from minicom:

# echo "Hello" > /dev/tty1
# echo "Hi " > /dev/tty1
My requirement is to get on the vga monitor whatever i am typing on the 
minicom after logging into the linux like .
ls or pwd commands.

Anyone pl help me.

Thanks & Regards
Sudheer





[-- Attachment #2: Type: text/html, Size: 1606 bytes --]

Re: regarding pci vga card output with powerpc

[Andrey Volkov]

urwithsudheer wrote:
> Hello All,
> I am working with a pci based vga card. I have connected the vga card 
> next to the  pci slot of my target processor on the baseboard.
> I have connected a monitor to the vga card.
> When i boot linux from minicom, i could see all the kernel log messages 
> on both the minicom and vga card monitor. But on the vga monitor, i 
> could not see any messages after asking for login as below:
> .
> .
> 
> Mounting filesystems
> Running depmod
> Setting up networking on loopback device:
> Setting up networking on eth0:
> eth0: PHY is Marvell 88E11x1 (1410cc2)
> Adding static route for default gateway to 192.168.3.1:
> Setting nameserver to 192.168.0.1 in /etc/resolv.conf:
> Starting inetd:
> 
> login:
> 
> 
> Though i am entering my login and passwd at the minicom, nothing comes 
> on to the vga monitor. But i am able to write to vga monitor using the 
> following commands from minicom:
> 
> # echo "Hello" > /dev/tty1
> # echo "Hi " > /dev/tty1
> My requirement is to get on the vga monitor whatever i am typing on the 
> minicom after logging into the linux like .
> ls or pwd commands.
> 
> Anyone pl help me.
> 
> Thanks & Regards
> Sudheer
> 

See Documentation/kernel-parameters.txt.

If be short, add:

     console=/dev/ttySxx console=/dev/tty1

(both) to a kernel parameters string.

--
Regards
Andrey

Re: regarding pci vga card output with powerpc

[sudheer]

[-- Attachment #1: Type: text/plain, Size: 2862 bytes --]

Andrey Volkov wrote:
> urwithsudheer wrote:
>> Hello All,
>> I am working with a pci based vga card. I have connected the vga card 
>> next to the  pci slot of my target processor on the baseboard.
>> I have connected a monitor to the vga card.
>> When i boot linux from minicom, i could see all the kernel log 
>> messages on both the minicom and vga card monitor. But on the vga 
>> monitor, i could not see any messages after asking for login as below:
>> .
>> .
>>
>> Mounting filesystems
>> Running depmod
>> Setting up networking on loopback device:
>> Setting up networking on eth0:
>> eth0: PHY is Marvell 88E11x1 (1410cc2)
>> Adding static route for default gateway to 192.168.3.1:
>> Setting nameserver to 192.168.0.1 in /etc/resolv.conf:
>> Starting inetd:
>>
>> login:
>>
>>
>> Though i am entering my login and passwd at the minicom, nothing 
>> comes on to the vga monitor. But i am able to write to vga monitor 
>> using the following commands from minicom:
>>
>> # echo "Hello" > /dev/tty1
>> # echo "Hi " > /dev/tty1
>> My requirement is to get on the vga monitor whatever i am typing on 
>> the minicom after logging into the linux like .
>> ls or pwd commands.
>>
>> Anyone pl help me.
>>
>> Thanks & Regards
>> Sudheer
>>
>
> See Documentation/kernel-parameters.txt.
>
> If be short, add:
>
>     console=/dev/ttySxx console=/dev/tty1
>
> (both) to a kernel parameters string.
>
I got upto login prompt on the vga monitor only after giving the above 
parameters in my u-boot bootargs.
u-boot=> set bootargs console=tty1 console=ttyS0,115200.


I have added in the serial driver  linux/drivers/serial/serial_core.c
   in the function  uart_write(struct tty_struct *tty, const unsigned 
char * buf, int count)
   The lines in the if directive.
  
if (c <= 0)
                        break;
                memcpy(circ->buf + circ->head, buf, c);
/* added to test vga */
#if 1
                memcpy(tempbuf, circ->buf + circ->head, c);
                  for(i=0;i<c;i++)
                  printk("%c", tempbuf[i]);
#endif

 circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
                buf += c;

Then as i expected, all the letters i enter in the minicom came twice on 
the minicom.

login:rroooott
Password: Password:
login  on `ttyS0'ogin  on `ttyS0'login[83]: root

 ~ # ~ # llss
 ~ # ~ # iiffccoonnffiigg

And whatever i enter on the minicom also gets print on the vga monitor  
but only once.
When i comment the if directive, On the vga monitor i could see only 
upto login prompt.

I don't know why the printk statement i added in the serial driver 
prints on the vga monitor.

As said by shkatikannan, i am going through the vga driver to copy to 
the frambuffer. But  yet couldn't get it exactly in the code where to copy.

Please tell me if i am in the wrong path.

Thanks & Regards
Sudheer





> -- 
> Regards
> Andrey
>
>


[-- Attachment #2: Type: text/html, Size: 4464 bytes --]

Re: regarding pci vga card output with powerpc

[Andrey Volkov]

sudheer wrote:
> Andrey Volkov wrote:
>> urwithsudheer wrote:
>>> Hello All,
>>> I am working with a pci based vga card. I have connected the vga card
>>> next to the  pci slot of my target processor on the baseboard.
>>> I have connected a monitor to the vga card.
>>> When i boot linux from minicom, i could see all the kernel log
>>> messages on both the minicom and vga card monitor. But on the vga
>>> monitor, i could not see any messages after asking for login as below:
>>> .
>>> .
>>>
>>> Mounting filesystems
>>> Running depmod
>>> Setting up networking on loopback device:
>>> Setting up networking on eth0:
>>> eth0: PHY is Marvell 88E11x1 (1410cc2)
>>> Adding static route for default gateway to 192.168.3.1:
>>> Setting nameserver to 192.168.0.1 in /etc/resolv.conf:
>>> Starting inetd:
>>>
>>> login:
>>>
>>>
>>> Though i am entering my login and passwd at the minicom, nothing
>>> comes on to the vga monitor. But i am able to write to vga monitor
>>> using the following commands from minicom:
>>>
>>> # echo "Hello" > /dev/tty1
>>> # echo "Hi " > /dev/tty1
>>> My requirement is to get on the vga monitor whatever i am typing on
>>> the minicom after logging into the linux like .
>>> ls or pwd commands.
>>>
>>> Anyone pl help me.
>>>
>>> Thanks & Regards
>>> Sudheer
>>>
>>
>> See Documentation/kernel-parameters.txt.
>>
>> If be short, add:
>>
>>     console=/dev/ttySxx console=/dev/tty1
>>
>> (both) to a kernel parameters string.
>>
> I got upto login prompt on the vga monitor only after giving the above
> parameters in my u-boot bootargs.
> u-boot=> set bootargs console=tty1 console=ttyS0,115200.
> 
> 
> I have added in the serial driver  linux/drivers/serial/serial_core.c
>    in the function  uart_write(struct tty_struct *tty, const unsigned
> char * buf, int count)
>    The lines in the if directive.
>   
> if (c <= 0)
>                         break;
>                 memcpy(circ->buf + circ->head, buf, c);
> /* added to test vga */
> #if 1
>                 memcpy(tempbuf, circ->buf + circ->head, c);
>                   for(i=0;i<c;i++)
>                   printk("%c", tempbuf[i]);
> #endif
> 
>  circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
>                 buf += c;
> 
> Then as i expected, all the letters i enter in the minicom came twice on
> the minicom.

Because printk didn't print to an dedicated device, but to a klog
stream. So check your /etc/inittab and /etc/securetty, its similar
that something wrong in this files.

> 
> login:rroooott
> Password: Password:
> login  on `ttyS0'ogin  on `ttyS0'login[83]: root
> 
>  ~ # ~ # llss
>  ~ # ~ # iiffccoonnffiigg
> 
> And whatever i enter on the minicom also gets print on the vga monitor 
> but only once.
> When i comment the if directive, On the vga monitor i could see only
> upto login prompt.
> 
> I don't know why the printk statement i added in the serial driver
> prints on the vga monitor.
> 
> As said by shkatikannan, i am going through the vga driver to copy to
> the frambuffer. But  yet couldn't get it exactly in the code where to copy.
> 
> Please tell me if i am in the wrong path.
> 
> Thanks & Regards
> Sudheer
> 
-- 
Regards
Andrey

Re: regarding pci vga card output with powerpc

[sudheer]

[-- Attachment #1: Type: text/plain, Size: 3839 bytes --]

Andrey Volkov wrote:
> sudheer wrote:
>   
>> Andrey Volkov wrote:
>>     
>>> urwithsudheer wrote:
>>>       
>>>> Hello All,
>>>> I am working with a pci based vga card. I have connected the vga card
>>>> next to the  pci slot of my target processor on the baseboard.
>>>> I have connected a monitor to the vga card.
>>>> When i boot linux from minicom, i could see all the kernel log
>>>> messages on both the minicom and vga card monitor. But on the vga
>>>> monitor, i could not see any messages after asking for login as below:
>>>> .
>>>> .
>>>>
>>>> Mounting filesystems
>>>> Running depmod
>>>> Setting up networking on loopback device:
>>>> Setting up networking on eth0:
>>>> eth0: PHY is Marvell 88E11x1 (1410cc2)
>>>> Adding static route for default gateway to 192.168.3.1:
>>>> Setting nameserver to 192.168.0.1 in /etc/resolv.conf:
>>>> Starting inetd:
>>>>
>>>> login:
>>>>
>>>>
>>>> Though i am entering my login and passwd at the minicom, nothing
>>>> comes on to the vga monitor. But i am able to write to vga monitor
>>>> using the following commands from minicom:
>>>>
>>>> # echo "Hello" > /dev/tty1
>>>> # echo "Hi " > /dev/tty1
>>>> My requirement is to get on the vga monitor whatever i am typing on
>>>> the minicom after logging into the linux like .
>>>> ls or pwd commands.
>>>>
>>>> Anyone pl help me.
>>>>
>>>> Thanks & Regards
>>>> Sudheer
>>>>
>>>>         
>>> See Documentation/kernel-parameters.txt.
>>>
>>> If be short, add:
>>>
>>>     console=/dev/ttySxx console=/dev/tty1
>>>
>>> (both) to a kernel parameters string.
>>>
>>>       
>> I got upto login prompt on the vga monitor only after giving the above
>> parameters in my u-boot bootargs.
>> u-boot=> set bootargs console=tty1 console=ttyS0,115200.
>>
>>
>> I have added in the serial driver  linux/drivers/serial/serial_core.c
>>    in the function  uart_write(struct tty_struct *tty, const unsigned
>> char * buf, int count)
>>    The lines in the if directive.
>>   
>> if (c <= 0)
>>                         break;
>>                 memcpy(circ->buf + circ->head, buf, c);
>> /* added to test vga */
>> #if 1
>>                 memcpy(tempbuf, circ->buf + circ->head, c);
>>                   for(i=0;i<c;i++)
>>                   printk("%c", tempbuf[i]);
>> #endif
>>
>>  circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1);
>>                 buf += c;
>>
>> Then as i expected, all the letters i enter in the minicom came twice on
>> the minicom.
>>     
>
> Because printk didn't print to an dedicated device, but to a klog
> stream. So check your /etc/inittab and /etc/securetty, its similar
> that something wrong in this files.
>   
oh..sorry, i forgot to tell you about the other two modifications done 
in the kernel config and ramdisk.
In the kernel config-- I have selected the virtual terminal option.
In the ramdisk- etc/inittab - i added the following line:
::respawn:/sbin/getty tty1 115200 vt100.
The etc/securetty contains the following:
console
fb0
tty1
tty2
tty3
tty4
tty5
tty6
tty7
tty8
ttyS0
ttyS1
ttyS2
ttyS3
ttyp0
ttyp1
ttyp2
ttyp3
ttyAM0
ttyAM1
tts/0
tts/1

Do i need to use fb0, to send the  serial data to frame buffer ?

>   
>> login:rroooott
>> Password: Password:
>> login  on `ttyS0'ogin  on `ttyS0'login[83]: root
>>
>>  ~ # ~ # llss
>>  ~ # ~ # iiffccoonnffiigg
>>
>> And whatever i enter on the minicom also gets print on the vga monitor 
>> but only once.
>> When i comment the if directive, On the vga monitor i could see only
>> upto login prompt.
>>
>> I don't know why the printk statement i added in the serial driver
>> prints on the vga monitor.
>>
>> As said by shkatikannan, i am going through the vga driver to copy to
>> the frambuffer. But  yet couldn't get it exactly in the code where to copy.
>>
>> Please tell me if i am in the wrong path.
>>
>> Thanks & Regards
>> Sudheer
>>
>>     


[-- Attachment #2: Type: text/html, Size: 4405 bytes --]