On 28 Sep 2015 23:49, James Bowman wrote:
> +	  if (cpu->state.pm_unlock)
> +	    {
> +	      /* Write to PM */

GNU style uses full sentences and two spaces after the period:
	/* Write to PM.  */

> +	      ft32_write_item (sd, dw, cpu->state.pm_addr, d);
> +	      cpu->state.pm_addr += 4;
> +	    }

what happens on the hardware when the PM is locked ?
is no error/status/register changed ?
-mike