153 lines
5.8 KiB
Bash
153 lines
5.8 KiB
Bash
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#!/bin/sh
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hid_conf_directory="/sys/kernel/config/usb_gadget/obmc_hid"
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dev_name="80401000.udc"
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create_hid() {
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# create gadget
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mkdir "${hid_conf_directory}"
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cd "${hid_conf_directory}" || exit 1
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# add basic information
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echo 0x0100 > bcdDevice
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echo 0x0200 > bcdUSB
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echo 0x0104 > idProduct # Multifunction Composite Gadget
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echo 0x1d6b > idVendor # Linux Foundation
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# create English locale
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mkdir strings/0x409
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echo "OpenBMC" > strings/0x409/manufacturer
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echo "virtual_input" > strings/0x409/product
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echo "OBMC0001" > strings/0x409/serialnumber
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# Create HID keyboard function
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mkdir functions/hid.0
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echo 1 > functions/hid.0/protocol # 1: keyboard
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echo 8 > functions/hid.0/report_length
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echo 1 > functions/hid.0/subclass
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# Binary HID keyboard descriptor
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# 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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# 0x09, 0x06, // USAGE (Keyboard)
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# 0xa1, 0x01, // COLLECTION (Application)
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# 0x05, 0x07, // USAGE_PAGE (Keyboard)
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# 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
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# 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
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# 0x15, 0x00, // LOGICAL_MINIMUM (0)
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# 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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# 0x75, 0x01, // REPORT_SIZE (1)
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# 0x95, 0x08, // REPORT_COUNT (8)
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# 0x81, 0x02, // INPUT (Data,Var,Abs)
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# 0x95, 0x01, // REPORT_COUNT (1)
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# 0x75, 0x08, // REPORT_SIZE (8)
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# 0x81, 0x03, // INPUT (Data,Var,Abs)
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# 0x95, 0x05, // REPORT_COUNT (5)
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# 0x75, 0x01, // REPORT_SIZE (1)
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# 0x05, 0x08, // USAGE_PAGE (LEDs)
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# 0x19, 0x01, // USAGE_MINIMUM (Num Lock)
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# 0x29, 0x05, // USAGE_MAXIMUM (Kana)
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# 0x91, 0x02, // OUTPUT (Data,Var,Abs)
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# 0x95, 0x01, // REPORT_COUNT (1)
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# 0x75, 0x03, // REPORT_SIZE (3)
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# 0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
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# 0x95, 0x06, // REPORT_COUNT (6)
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# 0x75, 0x08, // REPORT_SIZE (8)
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# 0x15, 0x00, // LOGICAL_MINIMUM (0)
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# 0x25, 0x65, // LOGICAL_MAXIMUM (101)
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# 0x05, 0x07, // USAGE_PAGE (Keyboard)
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# 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
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# 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
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# 0x81, 0x00, // INPUT (Data,Ary,Abs)
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# 0xc0 // END_COLLECTION
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printf '\x05\x01\x09\x06\xa1\x01\x05\x07\x19\xe0\x29\xe7\x15\x00\x25\x01\x75\x01\x95\x08\x81\x02\x95\x01\x75\x08\x81\x03\x95\x05\x75\x01\x05\x08\x19\x01\x29\x05\x91\x02\x95\x01\x75\x03\x91\x03\x95\x06\x75\x08\x15\x00\x25\x65\x05\x07\x19\x00\x29\x65\x81\x00\xc0' > functions/hid.0/report_desc
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# Create HID mouse function
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mkdir functions/hid.1
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echo 2 > functions/hid.1/protocol # 2: mouse
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echo 6 > functions/hid.1/report_length
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echo 1 > functions/hid.1/subclass
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# Binary HID mouse descriptor (absolute coordinate)
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# 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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# 0x09, 0x02, // USAGE (Mouse)
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# 0xa1, 0x01, // COLLECTION (Application)
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# 0x09, 0x01, // USAGE (Pointer)
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# 0xa1, 0x00, // COLLECTION (Physical)
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# 0x05, 0x09, // USAGE_PAGE (Button)
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# 0x19, 0x01, // USAGE_MINIMUM (Button 1)
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# 0x29, 0x03, // USAGE_MAXIMUM (Button 3)
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# 0x15, 0x00, // LOGICAL_MINIMUM (0)
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# 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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# 0x95, 0x03, // REPORT_COUNT (3)
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# 0x75, 0x01, // REPORT_SIZE (1)
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# 0x81, 0x02, // INPUT (Data,Var,Abs)
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# 0x95, 0x01, // REPORT_COUNT (1)
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# 0x75, 0x05, // REPORT_SIZE (5)
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# 0x81, 0x03, // INPUT (Cnst,Var,Abs)
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# 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
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# 0x09, 0x30, // USAGE (X)
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# 0x09, 0x31, // USAGE (Y)
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# 0x35, 0x00, // PHYSICAL_MINIMUM (0)
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# 0x46, 0xff, 0x7f, // PHYSICAL_MAXIMUM (32767)
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# 0x15, 0x00, // LOGICAL_MINIMUM (0)
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# 0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767)
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# 0x65, 0x11, // UNIT (SI Lin:Distance)
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# 0x55, 0x00, // UNIT_EXPONENT (0)
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# 0x75, 0x10, // REPORT_SIZE (16)
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# 0x95, 0x02, // REPORT_COUNT (2)
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# 0x81, 0x02, // INPUT (Data,Var,Abs)
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# 0x09, 0x38, // Usage (Wheel)
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# 0x15, 0xff, // LOGICAL_MINIMUM (-1)
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# 0x25, 0x01, // LOGICAL_MAXIMUM (1)
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# 0x35, 0x00, // PHYSICAL_MINIMUM (-127)
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# 0x45, 0x00, // PHYSICAL_MAXIMUM (127)
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# 0x75, 0x08, // REPORT_SIZE (8)
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# 0x95, 0x01, // REPORT_COUNT (1)
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# 0x81, 0x06, // INPUT (Data,Var,Rel)
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# 0xc0, // END_COLLECTION
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# 0xc0 // END_COLLECTION
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printf '\x05\x01\x09\x02\xa1\x01\x09\x01\xa1\x00\x05\x09\x19\x01\x29\x03\x15\x00\x25\x01\x95\x03\x75\x01\x81\x02\x95\x01\x75\x05\x81\x03\x05\x01\x09\x30\x09\x31\x35\x00\x46\xff\x7f\x15\x00\x26\xff\x7f\x65\x11\x55\x00\x75\x10\x95\x02\x81\x02\x09\x38\x15\xff\x25\x01\x35\x00\x45\x00\x75\x08\x95\x01\x81\x06\xc0\xc0' > functions/hid.1/report_desc
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# Create configuration
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mkdir configs/c.1
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mkdir configs/c.1/strings/0x409
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echo 0xe0 > configs/c.1/bmAttributes
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echo 200 > configs/c.1/MaxPower
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echo "" > configs/c.1/strings/0x409/configuration
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# Link HID functions to configuration
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ln -s functions/hid.0 configs/c.1
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ln -s functions/hid.1 configs/c.1
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}
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connect_hid() {
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if ! grep -q "${dev_name}" UDC; then
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echo "${dev_name}" > UDC
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fi
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}
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disconnect_hid() {
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if grep -q "${dev_name}" UDC; then
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echo "" > UDC
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fi
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}
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if [ ! -e "${hid_conf_directory}" ]; then
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create_hid
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else
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cd "${hid_conf_directory}" || exit 1
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fi
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if [ "$1" = "connect" ]; then
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connect_hid
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elif [ "$1" = "disconnect" ]; then
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disconnect_hid
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else
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echo >&2 "Invalid option: $1. Use 'connect' or 'disconnect'."
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exit 1
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fi
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