diff options
author | Patrick Georgi <patrick.georgi@coresystems.de> | 2008-09-02 16:06:22 +0000 |
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committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2008-09-02 16:06:22 +0000 |
commit | d21f68bbd588f46c23066eb8d227b51e4823de41 (patch) | |
tree | 1c9c724d292b8de59599d98e8549177329953a12 /payloads/libpayload/drivers/usb/usbinit.c | |
parent | 5ccfa1ac7994888f57c60b80fff80e350ab3f16c (diff) | |
download | coreboot-d21f68bbd588f46c23066eb8d227b51e4823de41.tar.xz |
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/usbinit.c')
-rw-r--r-- | payloads/libpayload/drivers/usb/usbinit.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/usbinit.c b/payloads/libpayload/drivers/usb/usbinit.c new file mode 100644 index 0000000000..fe13837c51 --- /dev/null +++ b/payloads/libpayload/drivers/usb/usbinit.c @@ -0,0 +1,120 @@ +/* + * 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 <config.h> +#include "usb.h" +#include "uhci.h" +#include "usbdisk.h" + +/** + * Initializes USB controller attached to PCI + * + * @param bus PCI bus number + * @param dev PCI device id at bus + * @param func function id of the controller + */ +int +usb_controller_initialize (int bus, int dev, int func) +{ + u32 class; + u32 devclass; + u32 prog_if; + pcidev_t addr; + u32 pciid; + + addr = PCI_DEV (bus, dev, func); + class = pci_read_config32 (addr, 8); + pciid = pci_read_config32 (addr, 0); + + devclass = class >> 16; + prog_if = (class >> 8) & 0xff; + + /* enable busmaster */ +#define PCI_COMMAND 4 +#define PCI_COMMAND_MASTER 4 + pci_write_config32 (addr, PCI_COMMAND, + pci_read_config32 (addr, + PCI_COMMAND) | + PCI_COMMAND_MASTER); + + if (devclass == 0xc03) { + printf ("%02x:%02x.%x %04x:%04x.%d ", 0, dev, func, + pciid >> 16, pciid & 0xFFFF, func); + if (prog_if == 0) { + printf ("UHCI controller\n"); +#ifdef CONFIG_USB_UHCI + uhci_init (addr); + usb_poll (); + usb_poll (); +#else + printf ("Not supported.\n"); +#endif + } + if (prog_if == 0x10) { + printf ("OHCI controller\n"); +#ifdef CONFIG_USB_OHCI + // ohci_init(addr); +#else + printf ("Not supported.\n"); +#endif + + } + if (prog_if == 0x20) { + printf ("EHCI controller\n"); +#ifdef CONFIG_USB_EHCI + // ehci_init(addr); +#else + printf ("Not supported.\n"); +#endif + + } + } + + return 0; +} + +/** + * Initialize all USB controllers attached to PCI. + */ +int +usb_initialize (void) +{ + int bus, dev, func; + for (bus = 0; bus < 256; bus++) + for (dev = 0; dev < 32; dev++) + for (func = 0; func < 8; func++) + usb_controller_initialize (bus, dev, func); + return 0; +} + +int +usb_exit (void) +{ + return 0; +} |