[U-Boot-Users] problems with serial console

[U-Boot-Users] problems with serial console

[Suresh Chandra Mannava]

Hi,

I had successfully ported u-boot-1.1.1 for MPC8260 based custom SBC. 
Every thing is fine.
I want to thank Mr. Wolfgang Denk and all the people who contributed to 
u-boot.

My interested is to boot Linux on this board. I downloaded linux-2.6.6.
I followed EST8260 board in the kernel and made changes accordingly for 
my board.

I did not add board define in  "arch/ppc/boot/simple/embed_config.c"  
because u-boot-1.1.1 passes clock speed in
Hz and so as the kernel versions from 2.4.5 (DULG FAQ) accepts in Hz.

After successful compilation. I tried to boot the kernel. Here I am 
encountering problem with serial console.

We are using serial port on SMC

u-boot baud rate is set at 115200. I am using hyper terminal for serial 
console.

Before booting the kernel, my display is ok. I can interact with the 
console normally
After uncompressing the image and before loading the Linux.
Many characters are skipped, And display can not be interpreted.

I tried to change the baud rate using "setenv baud rate 9600". But 
u-boot in hanging.

I am pasting the text capture for your reference.

kindly help in overcoming this Issue. Does  reducing baud rate helps?

   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

n ro2.(rhus cvso .. 0327(elwDgLnx303222_) 3TuJn2 00:0IT20
Cre ehSC20Pr
O oe0ttlae:378  M oe 26 ae,LF ac:
 Nra oe  ae,LF ac:
 HgMmzn:0pgs IObth1 ul  oeit
Kre omn ie osl=tS,120cnoety ot/e/a w I ahtbeetis 04(re 0 12bts
Wrig eltm lc em tc!Mmy13kvll(0kn d 4kdt,5kii,0 ihe)
lri l o...91oMSerchhhaeni:64(re:4 53 ye)neaea b te 12(re:3 26 ye)otaea 
al nre:52(re:0 06bts
S nrn sigb NFXccniigi iaststncoac o kaitd
enit my4krdixoT0oLu26
cthovalmo ir1
RMSdv iaz:6Adko49Ksz 04bokie


Thanks in advance.

Suresh Chandra Mannava.

[U-Boot-Users] problems with serial console

[Wolfgang Denk]

In message <41EFF047.6090409@gamebox.net> you wrote:
> 
> I want to thank Mr. Wolfgang Denk and all the people who contributed to 
> u-boot.

You are welcome.

> I did not add board define in  "arch/ppc/boot/simple/embed_config.c"  
> because u-boot-1.1.1 passes clock speed in
> Hz and so as the kernel versions from 2.4.5 (DULG FAQ) accepts in Hz.

Are you sure you know exactly what you are doing?

> After successful compilation. I tried to boot the kernel. Here I am 
> encountering problem with serial console.

Ummm.... I'm afraid I have to point out that this is off topic  onthe
U-Boot mailing list.

> After uncompressing the image and before loading the Linux.
> Many characters are skipped, And display can not be interpreted.

This is aconfiguration problem with your serial ports and console  in
Linux.

> kindly help in overcoming this Issue. Does  reducing baud rate helps?

This has nothing to do with the baudrate.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Just because your doctor has a name for your condition  doesn't  mean
he knows what it is.

[U-Boot-Users] problems with serial console

[Suresh Chandra Mannava]

>>I did not add board define in  "arch/ppc/boot/simple/embed_config.c"  
>>because u-boot-1.1.1 passes clock speed in
>>Hz and so as the kernel versions from 2.4.5 (DULG FAQ) accepts in Hz.
>>    
>>
>
>Are you sure you know exactly what you are doing?
>
>  
>
I got the thing correct. Problem is I selected the SCC console driver in 
Linux Kernel.
Now I deselected that option. Linux is booting smoothly.

Once again I thank  all the u-boot  community for their support.

Regards,
Suresh  Chandra Mannava