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Andrey Volkov wrote:
<blockquote cite="mid44DACE0E.2050505@varma-el.com" type="cite">
<pre wrap="">sudheer wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Andrey Volkov wrote:
</pre>
<blockquote type="cite">
<pre wrap="">urwithsudheer wrote:
</pre>
<blockquote type="cite">
<pre wrap="">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
</pre>
</blockquote>
<pre wrap="">See Documentation/kernel-parameters.txt.
If be short, add:
console=/dev/ttySxx console=/dev/tty1
(both) to a kernel parameters string.
</pre>
</blockquote>
<pre wrap="">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.
</pre>
</blockquote>
<pre wrap=""><!---->
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.
</pre>
</blockquote>
oh..sorry, i forgot to tell you about the other two modifications done
in the kernel config and ramdisk.<br>
In the kernel config-- I have selected the virtual terminal option.<br>
In the ramdisk- etc/inittab - i added the following line:<br>
::respawn:/sbin/getty tty1 115200 vt100.<br>
The etc/securetty contains the following:<br>
console<br>
fb0<br>
tty1<br>
tty2<br>
tty3<br>
tty4<br>
tty5<br>
tty6<br>
tty7<br>
tty8<br>
ttyS0<br>
ttyS1<br>
ttyS2<br>
ttyS3<br>
ttyp0<br>
ttyp1<br>
ttyp2<br>
ttyp3<br>
ttyAM0<br>
ttyAM1<br>
tts/0<br>
tts/1<br>
<br>
Do i need to use fb0, to send the serial data to frame buffer ?<br>
<br>
<blockquote cite="mid44DACE0E.2050505@varma-el.com" type="cite">
<pre wrap="">
</pre>
<blockquote type="cite">
<pre wrap="">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
</pre>
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