git.zerfleddert.de Git - usb-driver/blob - README

   1 This library emulates Jungo Windrvr USB and parallel port functions in
   2 userspace which are required by XILINX impact to access the Platform cable USB
   3 and Parallel Cable III.
   4 With this library it is possible to access the cables without loading a
   5 proprietary kernel module which breaks with every new kernel release. It uses
   6 the functionality provided by the libusb userspace library for USB access and
   7 the kernel interface at /dev/parport0 for parallel port access instead and
   8 should work on every kernel version which is supported by libusb and supports
   9 ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
  10 the following software:
  11
  12  * ISE Webpack 10.1
  13  * ISE Webpack 9.2SP1, SP2, SP3, SP4
  14  * ISE Webpack 9.1SP1, SP2, SP3
  15  * ISE Webpack 8.2SP3
  16  * ISE Webpack 8.1SP3
  17  * ChipScope 10.1
  18  * ChipScope 9.2.01i, 9.2.02i, 9.2.03i, 9.2.04i
  19  * ChipScope 9.1.02i, 9.1.03i
  20  * ChipScope 8.2.04i
  21  * EDK 10.1
  22  * EDK 9.2.01i, 9.2.02i
  23  * EDK 9.1.01i, 9.1.02i
  24  * EDK 8.2.02i
  25  * EDK 8.1.02i
  26  * Synplicity Identify
  27
  28 In addition to the XILINX USB and parallel cables, devices based on the FTDI
  29 2232 serial converter chip are also experimentally supported. This includes
  30 devices like the Amontec JTAGkey(-Tiny).
  31
  32 Build the library by calling `make'. If you are on a 64 bit system but want
  33 to build a 32 bit library, run `make lib32' instead. Be sure to have the 32
  34 bit versions of libusb-devel and libftdi-devel installed!
  35
  36 To use this library you have to preload the library before starting impact:
  37
  38 $ LD_PRELOAD=/path/to/libusb-driver.so impact
  39 or
  40 $ export LD_PRELOAD=/path/to/libusb-driver.so  (for sh shells)
  41 $ setenv LD_PRELOAD /path/to/libusb-driver.so  (for csh shells)
  42 $ impact
  43
  44 The source for this library can be found at:
  45 http://git.zerfleddert.de/cgi-bin/gitweb.cgi/usb-driver
  46
  47 The main website is located at:
  48 http://www.rmdir.de/~michael/xilinx/
  49
  50 The Git repository can be cloned with:
  51 git clone git://git.zerfleddert.de/usb-driver
  52
  53
  54 Notes for the USB cable
  55 =======================
  56
  57 To use the device as an ordinary user, put the following line in a new
  58 file "libusb-driver.rules" in /etc/udev/rules.d/ and restart udev:
  59 ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666"
  60
  61
  62 If your cable does not have the ID 03fd:0008 in the output of lsusb,
  63 the initial firmware has not been loaded (loading it changes the
  64 product-ID from another value to 8). To load the firmware follow
  65 these steps:
  66
  67 1. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from
  68    /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules
  69
  70 2. Install the package containing /sbin/fxload from your linux distribution.
  71    It is usually called "fxload"
  72
  73 3. copy the files /path/to/ISE/bin/lin/xusb*.hex to /usr/share/
  74
  75 4. restart udev and re-plug the cable
  76
  77
  78 If you have multiple cables connected, you can specify the cable to use
  79 in the XILINX_USB_DEV environment-variable as "bus:device".
  80 These identifiers are available in the output of lsusb:
  81 Bus 001 Device 004: ID 03fd:0008 Xilinx, Inc.
  82     ^^^        ^^^
  83 To use this cable, set the XILINX_USB_DEV variable to "001:004".
  84
  85
  86 Notes for the parallel cable
  87 ============================
  88
  89 To access the parallel port from userspace, the kernel needs to be built with
  90 the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware"
  91 (CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers"
  92 (CONFIG_PPDEV) builtin or as modules. If these features are built as modules,
  93 they need to be loaded before using this library.
  94 These modules are called:
  95 parport
  96 parport_pc
  97 ppdev
  98
  99
 100 To use the device as an ordinary user, put the user in the group 'lp'
 101
 102
 103 If you have an almost compatible cable which works with other software but not
 104 with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile.
 105 This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable.
 106
 107
 108 Parallel Cable IV is currently only supported in 'compatibility mode', as no
 109 attempt to configure the ECP registers is done by this library.
 110
 111
 112 If you get "Programming failed" or "DONE did not go high" when programming
 113 through the parallel cable with Impact 9.1, make sure to have the option "Use
 114 HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
 115 Preferences.
 116 If you are using batch mode, add the following line to your cmd file:
 117 setPreference -pref UseHighz:TRUE
 118 (This problem also occurs on windows and when using the real windrvr in linux
 119 and is solved with the same workaround. Impact 8.2 is working fine with the same
 120 boards and designs)
 121
 122
 123 Notes for FTDI 2232 based cables
 124 ================================
 125
 126 To build the driver with FTDI 2232 support, you need to have libftdi and
 127 the libftdi development package installed. On debian, you can install both
 128 by installing 'libftdi-dev'.
 129
 130 To set-up the device:
 131 1. Find out the vendor and product id of your cable using lsusb:
 132    Bus 003 Device 005: ID 0403:cff8 Future Technology Devices ...
 133                           ~~~~~~~~~
 134
 135 2. Copy the sample libusb-driverrc to ~/.libusb-driverrc, edit it and replace
 136    the vendor and product-id in the example file with the values provided in
 137    the lsusb-output. You can also change the 'parallel port' which is mapped to
 138    this cable. Impact sees the device at that port as a Parallel Cable III.
 139
 140 3. To use the device as an ordinary user, put the following line in a new file
 141    in /etc/udev/rules.d/ and restart udev:
 142    ACTION=="add", BUS=="usb", SYSFS{idVendor}=="0403", SYSFS{idProduct}=="cff8", MODE="666"
 143    (replace the vendor and product id with your values)
 144
 145 The support for FTDI 2232 based devices is experimental and they are currently
 146 significantly slower than the other supported cables.
 147
 148
 149 Locked cables
 150 =============
 151
 152 If you get the message 'The cable is being used by another application.' from
 153 impact, try running the following command:
 154
 155 echo -e 'cleancablelock\nexit' | impact -batch