From mboxrd@z Thu Jan  1 00:00:00 1970
From: prathika <prathika@deeopl.com>
Date: Sat, 25 Apr 2009 09:40:29 +0530
Subject: [U-Boot] UART2 Console in u-boot
In-Reply-To: <200904171137.51849.sr@denx.de>
References: <49E83D98.6060400@deeopl.com> <200904171107.34385.sr@denx.de>
	<49E84B99.8020604@deeopl.com> <200904171137.51849.sr@denx.de>
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To: u-boot@lists.denx.de

hi,

i did add the UART2 in the serial multi infrastructure at the end of my 
serial.c.
i have also configured GPIO registers for enabling UART2 Tx and Rx lines.
As I understand, these lines are also multiplexed with the boot strap 
lines of the PowerPC 440EP. Will this create any issue in the performance?
As I already mentioned I have enabled #define CONFIG_UART2_CONSOLE and

#define UART2_BASE	CFG_PERIPHERAL_BASE + 0x500

You have mentioned to enable the UART2 as default stdin and stdout...where do I enable that??

Thanks & Regards,
Prathika R


Stefan Roese wrote:
> On Friday 17 April 2009, prathika wrote:
>   
>> i have ported u-boot this way to my board with few changes in the u-boot
>> source code and the board is up and i have tested stand alone
>> application execution also.
>>     
>
> So you did a "real" board port to your custom board? Or did you "just" change 
> the yosemite files?
>
>   
>> Now as my requirement is that my console should be on UART2 as my UART0
>> and UART1 are coming out as RS 422 lines and only UART2 is RS232. I did
>> some patch up work on UART0 lines and tested my u-boot porting.
>>     
>
> Ah, I though you wanted the console on UART1. Ok, then my solution does not 
> work for you.
>
>   
>> I added a line
>>
>> #define UART2_BASE	CFG_PERIPHERAL_BASE + 0x500
>>
>> I have now changed as below and I commented checking for #define
>> UART0_CONSOLE and #define UART1_CONSOLE:
>>
>> #define UARTBASE	UART2_BASE
>>
>> Is this OK??
>>     
>
> Best would be to add the 3rd UART (UART2) to the SERIAL_MULTI infrastructure 
> (see end of serial.c) and use this device as "stdin/stdout/.." in your 
> default environment.
>
> Best regards,
> Stefan
>
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