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
diff --git a/payloads/libpayload/drivers/usb/usbinit.c b/payloads/libpayload/drivers/usb/usbinit.c
new file mode 100644
index 0000000..fe13837
--- /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;
+}