diff options
author | Patrick Georgi <patrick.georgi@coresystems.de> | 2008-09-02 16:06:22 +0000 |
---|---|---|
committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2008-09-02 16:06:22 +0000 |
commit | d21f68bbd588f46c23066eb8d227b51e4823de41 (patch) | |
tree | 1c9c724d292b8de59599d98e8549177329953a12 /payloads/libpayload/drivers/usb/usb_dev.c | |
parent | 5ccfa1ac7994888f57c60b80fff80e350ab3f16c (diff) |
This patch adds USB capabilities to libpayload. It requires some
memalign implementation (eg. the one I sent yesterday).
Features:
- UHCI controller driver
- UHCI root hub driver
- USB MSC (Mass Storage Class) driver
- skeleton of a USB HID driver
(requires better interrupt transfer handling, which is TODO)
- skeleton of a USB hub driver
(needs several blank spots filled in, eg. power management.
Again: TODO)
OHCI and EHCI are not supported, though OHCI support should be rather
easy as the stack provides reasonable abstractions (or so I hope). EHCI
will probably be more complicated.
Isochronous transfers (eg. webcams, audio stuff, ...) are not supported.
They can be, but I doubt we'll have a reason for that in the boot
environment.
The MSC driver was tested against a couple of USB flash drives, and
should be reasonably tolerant by now. But I probably underestimate
the amount of bugs present in USB flash drives, so feedback is welcome.
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3560 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'payloads/libpayload/drivers/usb/usb_dev.c')
-rw-r--r-- | payloads/libpayload/drivers/usb/usb_dev.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/usb_dev.c b/payloads/libpayload/drivers/usb/usb_dev.c new file mode 100644 index 0000000000..0c6a34ca10 --- /dev/null +++ b/payloads/libpayload/drivers/usb/usb_dev.c @@ -0,0 +1,55 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 coresystems GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "usb.h" + +static void +usb_nop_destroy (usbdev_t *dev) +{ + if (dev->descriptor != 0) + free (dev->descriptor); + usb_nop_init (dev); + dev->address = -1; + dev->hub = -1; + dev->port = -1; +} + +static void +usb_nop_poll (usbdev_t *dev) +{ + return; +} + +void +usb_nop_init (usbdev_t *dev) +{ + dev->descriptor = 0; + dev->destroy = usb_nop_destroy; + dev->poll = usb_nop_poll; +} |