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change U-boot file stream to COM2

U-Boot-Users Javier Grijalba 4 participants 10 messages Aug 12, 2007 – Aug 30, 2007

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Javier Grijalba

author
#0 lore raw

Hello,
I have an PXA270 bord with U-boot version 1.1.2 (Dec 22 2005 - 09:10:28) I want to change the file stream stdin and stdout to the serial COM port 2, now its on COM1
I tried with

-setenv stdin serial1
-saveenv

also tried with

-setenv stdin=serial1
-saveenv

but no luck. The file stream is always COM1.
Can you gibe me a hint?
Best regards

Signature · 2 lines
Javier Grijalba
Javier dot Grijalba at gmail dot com
#1 lore raw
Quoted 14 lines · In message <op.twycx8f1i2vpqq@localhost> you wrote:

I have an PXA270 bord with U-boot version 1.1.2 (Dec 22 2005 - 09:10:28) I want to change the file stream stdin and stdout to the serial COM port 2, now its on COM1
I tried with

(quoted diff) +0 -2
-setenv stdin serial1
-saveenv

also tried with

(quoted diff) +0 -2
-setenv stdin=serial1
-saveenv
Quoted 2 lines

but no luck. The file stream is always COM1.
Can you gibe me a hint?

As a very first step you should try finding out which I/O devices are configured on your system. What does the "coninfo" command print?

Best regards,

Wolfgang Denk

Signature · 5 lines
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
In general, they do what you want, unless you want consistency.
                                    - Larry Wall in the perl man page
author
#2 lore raw

Hi Wolfgang,
the coninfo shows this:

List of available devices:
serial 80000003 SIO stdin stdout stderr
nulldev 80000003 SIO

I suppose this is why I can?t add the second serial, how do I add the COM2 ?
Bets regards
Javier

Quoted 25 lines · Wolfgang Denk
Quoted 14 lines · In message <op.twycx8f1i2vpqq@localhost> you wrote:

I have an PXA270 bord with U-boot version 1.1.2 (Dec 22 2005 - 09:10:28) I want to change the file stream stdin and stdout to the serial COM port 2, now its on COM1
I tried with

(quoted diff) +0 -2
-setenv stdin serial1
-saveenv

also tried with

(quoted diff) +0 -2
-setenv stdin=serial1
-saveenv
Quoted 2 lines

but no luck. The file stream is always COM1.
Can you gibe me a hint?

As a very first step you should try finding out which I/O devices are configured on your system. What does the "coninfo" command print?

Best regards,

Wolfgang Denk

Signature · 2 lines
Javier Grijalba
Javier dot Grijalba at gmail dot com
#3 lore raw
Quoted 9 lines · In message <op.twzl7woci2vpqq@localhost> you wrote:

the coninfo shows this:

List of available devices:
serial 80000003 SIO stdin stdout stderr
nulldev 80000003 SIO

I suppose this is why I can??t add the second serial, how do I add the COM2 ?

Right - when there is no other device configured, you cannot switch to another device...

I don't know if this feature is supported for yoru architecture and/or your board. Check the configuration...

Best regards,

Wolfgang Denk

Signature · 5 lines
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
A committee is a group that keeps the minutes and loses hours.
                                                      -- Milton Berle
author
#4 lore raw

Hi Wolfgang,
the hardware definetely supports the COM2 (I tested it with Windows CE 5.0), but how can I add/configure the COM2 with U-boot ?
Is 80000003 a memory adress?
Best regards
Javier

Quoted 22 lines · Wolfgang Denk
Quoted 10 lines · In message <op.twzl7woci2vpqq@localhost> you wrote:

the coninfo shows this:

List of available devices:
serial 80000003 SIO stdin stdout stderr
nulldev 80000003 SIO

I suppose this is why I can??t add the second serial, how do I add the COM2
?

Right - when there is no other device configured, you cannot switch to another device...

I don't know if this feature is supported for yoru architecture and/or your board. Check the configuration...

Best regards,

Wolfgang Denk

Signature · 2 lines
Javier Grijalba
Javier dot Grijalba at gmail dot com
#5 lore raw
Quoted 16 lines · In message <op.twzubus0i2vpqq@localhost> you wrote:

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Quoted 8 lines

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author
#6 lore raw
In reply to Wolfgang Denk

Hi Wolfgang,
the hardware definetely supports the COM2 (I tested it with Windows CE 5.0), but how can I add/configure the COM2 with U-boot ?
Is 80000003 a memory adress?
Best regards
Javier

Quoted 22 lines · Wolfgang Denk
Quoted 10 lines · In message <op.twzl7woci2vpqq@localhost> you wrote:

the coninfo shows this:

List of available devices:
serial 80000003 SIO stdin stdout stderr
nulldev 80000003 SIO

I suppose this is why I can??t add the second serial, how do I add the COM2
?

Right - when there is no other device configured, you cannot switch to another device...

I don't know if this feature is supported for yoru architecture and/or your board. Check the configuration...

Best regards,

Wolfgang Denk

Signature · 2 lines
Javier Grijalba
Javier dot Grijalba at gmail dot com
#7 lore raw
Quoted 3 lines · In message <op.twz1epu5i2vpqq@localhost> you wrote:

the hardware definetely supports the COM2 (I tested it with Windows CE 5.0), but how can I add/configure the COM2 with U-boot ?

As mentioned before: I don't know if this feature is supported for your architecture and/or your board. Check the configuration...

Quoted 1 line

Is 80000003 a memory adress?

No, its flag bits. Please RTFM and the code.

Best regards,

Wolfgang Denk

Signature · 5 lines
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
It is not best to swap horses while crossing the river.
- Abraham Lincoln
#8 lore raw
In reply to Javier Grijalba

Hi Javier,

Quoted 4 lines

Hi Wolfgang,
the hardware definetely supports the COM2 (I tested it with Windows CE 5.0), but how can I add/configure the COM2 with U-boot ?
Is 80000003 a memory adress?

On the PXA270 you have three different UARTs, FFUART, BTUART and STDUART. I don't know what your configuration looks like, but I am pretty sure that what you dub as "COM1" is the FFUART and the other UARTs are not even supported let alone dynamically switchable in U-Boot.

Fortunately we are just working on something like this, Stefano (on CC), should be able to tell you when this will be finished.

Cheers
Detlev

Signature · 7 lines
Die Mengenlehre in der Schule ist daran gescheitert, dass man sie mit ihrem
Vokabular verwechselt hat.
                                     -- Norbert Treitz
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de
#9 lore raw
Quoted 2 lines · Detlev Zundel

Fortunately we are just working on something like this, Stefano (on CC), should be able to tell you when this will be finished.

Test is finished. I will send the patch. Multiple serials are supported in the same way as they are on the PPC boards.

Javier, at the moment u-boot supports only one serial interface and consequently you cannot enable the other ones. You can use any of FFUART,BTUART or STUART, but u-boot cannot have more than one serial at the same time. The serial driver for PXA27xx does not support it.

After applying the patch I will send, you have to set CONFIG_SERIAL_MULTI in your config file and all serials you want to use:

#define CONFIG_SERIAL_MULTI

#define CONFIG_FFUART          1       /* we use FFUART on Conxs */
#define CONFIG_BTUART          1       /* we use BTUART on Conxs */
#define CONFIG_STUART          1       /* we use STUART on Conxs */

You have to provide also a function in your board.c file to return the default serial device, such as:

struct serial_device *default_serial_console (void)

{
         return &serial_ffuart_device;
}

or whatever you prefer.

On my target (PXA270) I get:
U-Boot 1.2.0-gc7d2ba2d-dirty (Aug 23 2007 - 15:47:09)

DRAM:  64 MB
Flash: 32 MB
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
$ coninfo
List of available devices:
serial   80000003 SIO stdin stdout stderr
nulldev  80000003 SIO
serial_stuart 00000003 .IO
serial_btuart 00000003 .IO
serial_ffuart 00000003 .IO

Then you will be able to switch among the serials setting the stdout, stdin and stderr variables. For example, to switch to the BTUART:

setenv stdout serial_btuart
setenv stdin serial_btuart

Regards,
stefano

Signature · 5 lines
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================