[U-Boot] PPC405 with XMD boot

[Rommel G Custodio <sessyargc@gmail.com>]

Dear Frank,

On 2013.02/05, Frank Lombardo wrote:
> Rommel,
> 
> I am using your recently posted patch to boot my custom Virtex4 board with
> XMD.  Execution gets stuck in the NS16550_init() function.  It gets stuck
> at this line:

So you're not jumping to random addresses anymore.

> 
> #if (!defined(CONFIG_SYS_NS16550_BROKEN_TEMT))
>     while (!(serial_in(&com_port->lsr) & UART_LSR_TEMT))
>         ;
> #endif
> 
> If I define CONFIG_SYS_NS16550_BROKEN_TEMT, it gets stuck in the while loop
> in NS16550_putc:
> 
>     while ((serial_in(&com_port->lsr) & UART_LSR_THRE) == 0)
>         ;
>     serial_out(c, &com_port->thr);
> 
> From the GDB output, I can see it is using the correct address for the the
> serial port (0x84000000)

Hmmn. I've seen that before, I think.
Don't define CONFIG_SYS_NS16550_BROKEN_TEMT.

Make sure you use CTS/RTS (h/w flow) control with your terminal
application.

HTH.

All the best,
Rommel

> 
> (gdb) target remote localhost:1234
> Remote debugging using localhost:1234
> NS16550_putc (com_port=0x84000000, c=13 '\r') at ns16550.c:91
> 91        while ((serial_in(&com_port->lsr) & UART_LSR_THRE) == 0)
> (gdb)
> 
> 
> In your opinion, is your patch providing everything that I need to boot
> with XMD?  Can you suggest what I might be doing wrong?
> 
> Thanks for any insight you may have,
> Frank
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