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Diffstat (limited to 'payloads/libpayload/drivers/usb/usbhid.c')
-rw-r--r--payloads/libpayload/drivers/usb/usbhid.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/usbhid.c b/payloads/libpayload/drivers/usb/usbhid.c
new file mode 100644
index 0000000000..414cc07cdb
--- /dev/null
+++ b/payloads/libpayload/drivers/usb/usbhid.c
@@ -0,0 +1,137 @@
+/*
+ * 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"
+
+enum { hid_subclass_none = 0, hid_subclass_boot = 1 };
+enum { hid_proto_boot = 0, hid_proto_report = 1 };
+enum { hid_boot_proto_none = 0, hid_boot_proto_keyboard =
+ 1, hid_boot_proto_mouse = 2
+};
+static const char *boot_protos[3] = { "(none)", "keyboard", "mouse" };
+enum { GET_REPORT = 0x1, GET_IDLE = 0x2, GET_PROTOCOL = 0x3, SET_REPORT =
+ 0x9, SET_IDLE = 0xa, SET_PROTOCOL = 0xb
+};
+
+static void
+usb_hid_destroy (usbdev_t *dev)
+{
+}
+
+int keypress;
+char keymap[256] = {
+ -1, -1, -1, -1, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',
+ 'l',
+ 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ '1', '2',
+ '3', '4', '5', '6', '7', '8', '9', '0', '\n', TERM_ESC,
+ TERM_BACKSPACE, TERM_TAB, ' ', '-', '=', '[',
+ ']', '\\', -1, ';', '\'', '`', ',', '.', '/', -1, -1, -1, -1, -1, -1,
+ -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, TERM_HOME, TERM_PPAGE, -1,
+ TERM_END, TERM_NPAGE, TERM_RIGHT,
+ TERM_LEFT, TERM_DOWN, TERM_UP, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+};
+
+
+static void
+usb_hid_poll (usbdev_t *dev)
+{
+ char buf[8];
+ static int toggle = 0;
+ // hardcode to endpoint 1, 8 bytes
+ dev->controller->packet (dev, 1, IN, toggle, 8, buf);
+ toggle ^= 1;
+ // FIXME: manage buf[0]=special keys, too
+ keypress = keymap[buf[2]];
+ if ((keypress == -1) && (buf[2] != 0)) {
+ printf ("%x %x %x %x %x %x %x %x\n", buf[0], buf[1], buf[2],
+ buf[3], buf[4], buf[5], buf[6], buf[7]);
+ }
+}
+
+int (*oldhook) (void);
+
+int
+hookfunc (void)
+{
+ int key;
+ if (oldhook != 0)
+ key = oldhook ();
+ if (key == -1)
+ key = keypress;
+ return key;
+}
+
+void
+usb_hid_init (usbdev_t *dev)
+{
+
+ configuration_descriptor_t *cd = dev->configuration;
+ interface_descriptor_t *interface = ((char *) cd) + cd->bLength;
+
+ if (interface->bInterfaceSubClass == hid_subclass_boot) {
+ printf (" supports boot interface..\n");
+ printf (" it's a %s\n",
+ boot_protos[interface->bInterfaceProtocol]);
+ if (interface->bInterfaceProtocol == hid_boot_proto_keyboard) {
+ printf (" activating...\n");
+ dev_req_t dr;
+ // set_protocol(hid_proto_boot)
+ dr.data_dir = host_to_device;
+ dr.req_type = class_type;
+ dr.req_recp = iface_recp;
+ dr.bRequest = SET_PROTOCOL;
+ dr.wValue = hid_proto_boot;
+ dr.wIndex = interface->bInterfaceNumber;
+ dr.wLength = 0;
+ dev->controller->control (dev, OUT,
+ sizeof (dev_req_t), &dr, 0,
+ 0);
+
+ // only add here, because we only support boot-keyboard HID devices
+ // FIXME: make this a real console input driver instead, once the API is there
+ dev->destroy = usb_hid_destroy;
+ dev->poll = usb_hid_poll;
+ oldhook = getkey_hook;
+ getkey_hook = hookfunc;
+ }
+ }
+}