/**
* bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
*
* @return interrupt flag (0 if interrupts were disabled, non-zero if they were
* enabled)
*/
static ulong bootm_disable_interrupts(void)
{
ulong iflag;
/*
* We have reached the point of no return: we are going to
* overwrite all exception vector code, so we cannot easily
* recover from any failures any more...
*/
iflag = disable_interrupts();
#ifdef CONFIG_NETCONSOLE
/* Stop the ethernet stack if NetConsole could have left it up */
eth_halt();
eth_unregister(eth_get_dev());
#endif
#if defined(CONFIG_CMD_USB)
/*
* turn off USB to prevent the host controller from writing to the
* SDRAM while Linux is booting. This could happen (at least for OHCI
* controller), because the HCCA (Host Controller Communication Area)
* lies within the SDRAM and the host controller writes continously to
* this area (as busmaster!). The HccaFrameNumber is for example
* updated every 1 ms within the HCCA structure in SDRAM! For more
* details see the OpenHCI specification.
*/
usb_stop();
#endif
return iflag;
}
void usbnet_disconnect(struct usb_device *usbdev)
{
struct usbnet *undev = usbdev->drv_data;
struct eth_device *edev = &undev->edev;
struct driver_info *info;
info = undev->driver_info;
if (info->unbind)
info->unbind(undev);
eth_unregister(edev);
free(undev);
}
