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.
  34
  35 To use this library you have to preload the library before starting impact:
  36
  37 $ LD_PRELOAD=/path/to/libusb-driver.so impact
  38 or
  39 $ export LD_PRELOAD=/path/to/libusb-driver.so  (for sh shells)
  40 $ setenv LD_PRELOAD /path/to/libusb-driver.so  (for csh shells)
  41 $ impact
  42
  43 The source for this library can be found at:
  44 http://git.zerfleddert.de/cgi-bin/gitweb.cgi/usb-driver
  45
  46 The main website is located at:
  47 http://www.rmdir.de/~michael/xilinx/
  48
  49 The Git repository can be cloned with:
  50 git clone git://git.zerfleddert.de/usb-driver
  51
  52
  53 Notes for the USB cable
  54 =======================
  55
  56 To use the device as an ordinary user, put the following line in a new
  57 file "libusb-driver.rules" in /etc/udev/rules.d/ and restart udev:
  58 ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666"
  59
  60
  61 If your cable does not have the ID 03fd:0008 in the output of lsusb,
  62 the initial firmware has not been loaded (loading it changes the
  63 product-ID from another value to 8). To load the firmware follow
  64 these steps:
  65
  66 1. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from
  67    /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules
  68
  69 2. Install the package containing /sbin/fxload from your linux distribution.
  70    It is usually called "fxload"
  71
  72 3. copy the files /path/to/ISE/bin/lin/xusb*.hex to /usr/share/
  73
  74 4. restart udev and re-plug the cable
  75
  76
  77 If you have multiple cables connected, you can specify the cable to use
  78 in the XILINX_USB_DEV environment-variable as "bus:device".
  79 These identifiers are available in the output of lsusb:
  80 Bus 001 Device 004: ID 03fd:0008 Xilinx, Inc.
  81     ^^^        ^^^
  82 To use this cable, set the XILINX_USB_DEV variable to "001:004".
  83
  84
  85 Notes for the parallel cable
  86 ============================
  87
  88 To access the parallel port from userspace, the kernel needs to be built with
  89 the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware"
  90 (CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers"
  91 (CONFIG_PPDEV) builtin or as modules. If these features are built as modules,
  92 they need to be loaded before using this library.
  93 These modules are called:
  94 parport
  95 parport_pc
  96 ppdev
  97
  98
  99 To use the device as an ordinary user, put the user in the group 'lp'
 100
 101
 102 If you have an almost compatible cable which works with other software but not
 103 with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile.
 104 This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable.
 105
 106
 107 Parallel Cable IV is currently only supported in 'compatibility mode', as no
 108 attempt to configure the ECP registers is done by this library.
 109
 110
 111 If you get "Programming failed" or "DONE did not go high" when programming
 112 through the parallel cable with Impact 9.1, make sure to have the option "Use
 113 HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
 114 Preferences.
 115 If you are using batch mode, add the following line to your cmd file:
 116 setPreference -pref UseHighz:TRUE
 117 (This problem also occurs on windows and when using the real windrvr in linux
 118 and is solved with the same workaround. Impact 8.2 is working fine with the same
 119 boards and designs)
 120
 121
 122 Notes for FTDI 2232 based cables
 123 ================================
 124
 125 To build the driver with FTDI 2232 support, you need to have libftdi and
 126 the libftdi development package installed. On debian, you can install both
 127 by installing 'libftdi-dev'.
 128
 129 To set-up the device:
 130 1. Find out the vendor and product id of your cable using lsusb:
 131    Bus 003 Device 005: ID 0403:cff8 Future Technology Devices ...
 132                           ~~~~~~~~~
 133
 134 2. Copy the sample libusb-driverrc to ~/.libusb-driverrc, edit it and replace
 135    the vendor and product-id in the example file with the values provided in
 136    the lsusb-output. You can also change the 'parallel port' which is mapped to
 137    this cable. Impact sees the device at that port as a Parallel Cable III.
 138
 139 3. To use the device as an ordinary user, put the following line in a new file
 140    in /etc/udev/rules.d/ and restart udev:
 141    ACTION=="add", BUS=="usb", SYSFS{idVendor}=="0403", SYSFS{idProduct}=="cff8", MODE="666"
 142    (replace the vendor and product id with your values)
 143
 144 The support for FTDI 2232 based devices is experimental and they are currently
 145 significantly slower than the other supported cables.
 146
 147
 148 Locked cables
 149 =============
 150
 151 If you get the message 'The cable is being used by another application.' from
 152 impact, try running the following command:
 153
 154 echo -e 'cleancablelock\nexit' | impact -batch