[Query] Garbled characters on gtkterm

[Query] Garbled characters on gtkterm

[DebBarma, Tarun Kanti]

Hi,
While trying to boot kernel image on N800 I am seeing
lot of garbled characters along with the trace in gtkterm.

I have configured the terminal as follows:
Port: ttyS0
Speed: 115200
Parity: none
Bits:8
Stopbits: 1
Flow control: none
End of delay(ms): 0

Can someone help me if I am missing anything in my configuration?

-tarun

[LOG SNIPPET]

<<Garbled characters>>
...
  DeteNOLO X-Loader (v1.1.16, Oct 31 2008)
Secondary image size 99036
Booting secondary
Nokia OMAP Loader v1.1.16 (Oct 31 2008) running on Nokia N800 F5 (RX-34)
Clocks:
  Core:   658 MHz  L3:     109 MHz  L4:     109 MHz
  MPU:    329 MHz  DSP:    219 MHz  IVA:    109 MHz
I2C v3.4
Menelaus v2.2 found
Vilma v1.5 found
Betty v2.1 found
Reset reason: pwr_key
System DMA v2.0
OneNAND blocks unlocked in 30264 us
  Flash id: ec4811
Partition table successfully read
McSPI v1.4
RFBI version 1.0
  Detecting LCD panel lph8923
    Panel ID: 838f48
    URAL panel detected
  Detected LCD paneH: lc041q3
  S1D1374! HaAlstOrm @eteCted
FB memory blanking took 242 ms (3089 kB/s)
  Logo drawn in 24 ms (1218 kB/s)
  Über-cool backlight fade-in took 101 ms
Initializing USB
  USB host detected
  Entering USB loop
SETUP: RD STD DEVICE    GET_DESCRIPTOR     DEVICE (value 00, index 0000, length 64 bytes)
SETUP: WR STD DEVICE    SET_ADDRESS        value 0033 index 0000 length 0000
SETUP: RD STD DEVICE    GET_DESCRIPTOR     DEVICE (value 00, index 0000, length 18 bytes)
SETUP: RD STD DEVICE    GET_DESCRIPTOR     CONFIGURATION (value 00, index 0000, length 9 bytes)
SETUP: RD STD DEVICE    GET_DESCRIPTOR     CONFIGURATION (value 00, index 0000, length 94 bytes)
...
<<Garbled characters>>
...
Loading kernel image info... done.
Loading kernel (1427 kB)... done in 73 ms (19527 kB/s)
Total bootup time 2734 ms
Uncompressing Linux... done, booting the kernel.
[    0.000000] Linux version 2.6.36-rc4-00040-g4c1f85c-dirty (x0016154@omaplbp) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #7 Fri Sep 17 15:57:29 IST 2010

[    0.000000] CPU: ARMv6-compatible processor [4107b362] revision 2 (ARMv6TEJ), cr=00c5387f

[    0.000000] CPU: VIPT aliasing data cache, VIPT aliasing instruction cache

[    0.000000] Machine: Nokia N800

[    0.000000] Ignoring unrecognised tag 0x414f4d50

[    0.000000] bootconsole [earlycon0] enabled

[    0.000000] Memory policy: ECC disabled, Data cache writeback
....
<<Garbled characters>>
....
[    0.000000] pid_max: default: 32768 minimum: 301

[    0.000000] Mount-cache hash table entries: 512

[    0.000000] CPU: Testing write buffer coherency: ok

[    0.000000] regulator: core version 0.5 
...
<<Garbled characters>>
...
[    1.204437] mmc0: new SD card at address 1234
[    1.210021] mmcblk0: mmc0:1234 SA01G 972 MiB 
[    1.217468]  mmcblk0: p1
[    1.241241] VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2)
[    1.248352] Please append a correct "root=" boot option; here are the availAble partitions:

<<Garbled characters>>




--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [Query] Garbled characters on gtkterm

[Tony Lindgren]

* DebBarma, Tarun Kanti <tarun.kanti@ti.com> [100917 10:36]:
> Hi,
> While trying to boot kernel image on N800 I am seeing
> lot of garbled characters along with the trace in gtkterm.
> 
> I have configured the terminal as follows:
> Port: ttyS0
> Speed: 115200
> Parity: none
> Bits:8
> Stopbits: 1
> Flow control: none
> End of delay(ms): 0
> 
> Can someone help me if I am missing anything in my configuration?

> [    0.000000] Linux version 2.6.36-rc4-00040-g4c1f85c-dirty (x0016154@omaplbp) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202) ) #7 Fri Sep 17 15:57:29 IST 2010

Quite recent kernel, good :)

> 
> [    0.000000] CPU: ARMv6-compatible processor [4107b362] revision 2 (ARMv6TEJ), cr=00c5387f
> 
> [    0.000000] CPU: VIPT aliasing data cache, VIPT aliasing instruction cache
> 
> [    0.000000] Machine: Nokia N800
> 
> [    0.000000] Ignoring unrecognised tag 0x414f4d50
> 
> [    0.000000] bootconsole [earlycon0] enabled
> 
> [    0.000000] Memory policy: ECC disabled, Data cache writeback
> ....
> <<Garbled characters>>

I'm not seeing these, just booted my n800 last night with the cbus
patches from Felipe. I believe all I did was yes "" | ARCH=arm make oldconfig
on the n8x0_defconfig that we still have around.

I've seen things like that with some USB serial dongles earlier,
I believe that the pl2303 based one worked, and then the ftdi
driver one produced garbage. AFAIK, this was related to some
problem with the serial port level shifter, I think this was
with n810.

Regards,

Tony

RE: [Query] Garbled characters on gtkterm

[DebBarma, Tarun Kanti]

> 
> I'm not seeing these, just booted my n800 last night with the cbus
> patches from Felipe. I believe all I did was yes "" | ARCH=arm make
> oldconfig
> on the n8x0_defconfig that we still have around.
> 
> I've seen things like that with some USB serial dongles earlier,
> I believe that the pl2303 based one worked, and then the ftdi
> driver one produced garbage. AFAIK, this was related to some
> problem with the serial port level shifter, I think this was
> with n810.

It is working fine now.
I have just changed from Linux gtkterm to Windows TeraTerm.

--tarun