Re: [U-Boot] SPL Dfu update

30 Oct 2013


      Hi
On Wed, Oct 30, 2013 at 9:28 AM, Michael Trimarchi
michael@amarulasolutions.com wrote:
...
Hi Lukasz
We have discussed during the u-boot mini-summit the possibility to have
the dfu update from SPL. Right now I'm trying to understand what is the best
way to do:
void spl_dfu_load_image()
{
        int rv;
    env_init();
    env_relocate();
    setenv("dfu_alt_info", DFU_BOARD_FLASHINFO);
    board_usb_init();
    g_dnl_register(s);


One option could be do the same of do_dfu command and let upload
all the image that is needed to flash and the issue a usb reset. I don't sure
if the reset can be triggered and then do a cpu board reset and let it boot
from the booting device.
What is for you the best approch?
better pseudo code
void spl_dfu_load_image()
{
        ret = dfu_config_entities(DFU_BOARD_FLASHINFO, DFU_BOARD_INTERFACE,
                                  DFU_BOARD_NUMBER);
        board_usb_init();
        g_dnl_register(s);
        while(1) {
                if (ctrlc())
                        goto exit;
                ret = usb_gadget_handle_interrupts();
                if (ret)
                        goto exit;
        }
exit:
        g_dnl_unregister();
        dfu_free_entities();
        board_reset();
}
Michael
...
Michael