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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