[U-Boot] printf in uboot

[Hebbar, Gururaja]

Hi,

On Mon, Dec 12, 2011 at 12:59:43, Sidharth Baisane wrote:
> hi,
> 
>  How can i use print statement  in uboot ???
>  I tried printf in following program but its not executing it and my
> program hangs afterwards.
> 
> 
> void start_armboot (void)
> {
>     init_fnc_t **init_fnc_ptr;
>     char *s;
> #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
>     unsigned long addr;
> #endif
> *
>     printf("starting armboot");*

Serial Console is yet to be initialized at this point. And hence the board seems to freeze here.

>     /* Pointer is writable since we allocated a register for it */
>     gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
>     /* compiler optimization barrier needed for GCC >= 3.4 */
>     __asm__ __volatile__("": : :"memory");
> 
>     memset ((void*)gd, 0, sizeof (gd_t));
>     gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
>     memset (gd->bd, 0, sizeof (bd_t));
> 
>     gd->flags |= GD_FLG_RELOC;
> 
>     monitor_flash_len = _bss_start - _armboot_start;
> 


Regards, 
Gururaja