94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2000,2001,2002,2003,2004,2005,2007,2008,2009,2010,2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/serial.h>
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#include <grub/types.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/usb.h>
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#include <grub/usbserial.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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/* Fetch a key. */
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static int
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usbdebug_late_hw_fetch (struct grub_serial_port *port)
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{
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return grub_usbserial_fetch (port, 0);
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}
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/* Put a character. */
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static void
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usbdebug_late_hw_put (struct grub_serial_port *port, const int c)
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{
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char cc = c;
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grub_usb_bulk_write (port->usbdev, port->out_endp->endp_addr, 1, &cc);
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}
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static grub_err_t
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usbdebug_late_hw_configure (struct grub_serial_port *port __attribute__ ((unused)),
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struct grub_serial_config *config __attribute__ ((unused)))
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{
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return GRUB_ERR_NONE;
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}
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static struct grub_serial_driver grub_usbdebug_late_driver =
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{
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.configure = usbdebug_late_hw_configure,
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.fetch = usbdebug_late_hw_fetch,
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.put = usbdebug_late_hw_put,
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.fini = grub_usbserial_fini
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};
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static int
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grub_usbdebug_late_attach (grub_usb_device_t usbdev, int configno, int interfno)
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{
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grub_usb_err_t err;
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struct grub_usb_desc_debug debugdesc;
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err = grub_usb_get_descriptor (usbdev, GRUB_USB_DESCRIPTOR_DEBUG, configno,
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sizeof (debugdesc), (char *) &debugdesc);
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if (err)
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return 0;
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return grub_usbserial_attach (usbdev, configno, interfno,
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&grub_usbdebug_late_driver,
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debugdesc.in_endp, debugdesc.out_endp);
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}
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static struct grub_usb_attach_desc attach_hook =
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{
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.class = 0xff,
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.hook = grub_usbdebug_late_attach
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};
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GRUB_MOD_INIT(usbserial_usbdebug_late)
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{
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grub_usb_register_attach_hook_class (&attach_hook);
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}
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GRUB_MOD_FINI(usbserial_usbdebug_late)
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{
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grub_serial_unregister_driver (&grub_usbdebug_late_driver);
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grub_usb_unregister_attach_hook_class (&attach_hook);
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}
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