| 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 9.1SP3 |
| 13 | * ISE Webpack 9.1SP2 |
| 14 | * ISE Webpack 9.1SP1 |
| 15 | * ISE Webpack 8.2SP3 |
| 16 | * ISE Webpack 8.1SP3 |
| 17 | * ChipScope 9.1.03i |
| 18 | * ChipScope 9.1.02i |
| 19 | * ChipScope 8.2.04i |
| 20 | * EDK 9.1.01i |
| 21 | * EDK 8.2.02i |
| 22 | * EDK 8.1.02i |
| 23 | |
| 24 | In addition to the XILINX USB and parallel cables, devices based on the FTDI |
| 25 | 2232 serial converter chip are also experimentally supported. This includes |
| 26 | devices like the Amontec JTAGkey(-Tiny). |
| 27 | |
| 28 | Build the library by calling `make'. |
| 29 | |
| 30 | To use this library you have to preload the library before starting impact: |
| 31 | |
| 32 | $ LD_PRELOAD=/path/to/libusb-driver.so impact |
| 33 | or |
| 34 | $ export LD_PRELOAD=/path/to/libusb-driver.so (for sh shells) |
| 35 | $ setenv LD_PRELOAD /path/to/libusb-driver.so (for csh shells) |
| 36 | $ impact |
| 37 | |
| 38 | The source for this library can be found at: |
| 39 | http://git.zerfleddert.de/cgi-bin/gitweb.cgi/usb-driver |
| 40 | |
| 41 | The main website is located at: |
| 42 | http://www.rmdir.de/~michael/xilinx/ |
| 43 | |
| 44 | The Git repository can be cloned with: |
| 45 | git clone git://git.zerfleddert.de/usb-driver |
| 46 | |
| 47 | |
| 48 | Notes for the USB cable |
| 49 | ======================= |
| 50 | |
| 51 | To use the device as an ordinary user, put the following line in a new |
| 52 | file in /etc/udev/rules.d/ and restart udev: |
| 53 | ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666" |
| 54 | |
| 55 | |
| 56 | If your cable does not have the ID 03fd:0008 in the output of lsusb, |
| 57 | the initial firmware has not been loaded (loading it changes the |
| 58 | product-ID from another value to 8). To load the firmware follow |
| 59 | these steps: |
| 60 | |
| 61 | 1. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from |
| 62 | /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules |
| 63 | |
| 64 | 2. Install the package containing /sbin/fxload from your linux distribution. |
| 65 | It is usually called "fxload" |
| 66 | |
| 67 | 3. copy the file /path/to/ISE/bin/lin/xusbdfwu.hex to /usr/share/xusbdfwu.hex |
| 68 | |
| 69 | 4. restart udev and re-plug the cable |
| 70 | |
| 71 | |
| 72 | Notes for the parallel cable |
| 73 | ============================ |
| 74 | |
| 75 | To access the parallel port from userspace, the kernel needs to be built with |
| 76 | the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware" |
| 77 | (CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers" |
| 78 | (CONFIG_PPDEV) builtin or as modules. If these features are built as modules, |
| 79 | they need to be loaded before using this library. |
| 80 | These modules are called: |
| 81 | parport |
| 82 | parport_pc |
| 83 | ppdev |
| 84 | |
| 85 | |
| 86 | To use the device as an ordinary user, put the user in the group 'lp' |
| 87 | |
| 88 | |
| 89 | If you have an almost compatible cable which works with other software but not |
| 90 | with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile. |
| 91 | This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable. |
| 92 | |
| 93 | |
| 94 | Parallel Cable IV is currently only supported in 'compatibility mode', as no |
| 95 | attempt to configure the ECP registers is done by this library. |
| 96 | |
| 97 | |
| 98 | If you get "Programming failed" or "DONE did not go high" when programming |
| 99 | through the parallel cable with Impact 9.1, make sure to have the option "Use |
| 100 | HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration |
| 101 | Preferences. |
| 102 | If you are using batch mode, add the following line to your cmd file: |
| 103 | setPreference -pref UseHighz:TRUE |
| 104 | (This problem also occurs on windows and when using the real windrvr in linux |
| 105 | and is solved with the same workaround. Impact 8.2 is working fine with the same |
| 106 | boards and designs) |
| 107 | |
| 108 | |
| 109 | Notes for FTDI 2232 based cables |
| 110 | ================================ |
| 111 | |
| 112 | To build the driver with FTDI 2232 support, you need to have libftdi and |
| 113 | the libftdi development package installed. On debian, you can install both |
| 114 | by installing 'libftdi-dev'. |
| 115 | |
| 116 | To set-up the device: |
| 117 | 1. Find out the vendor and product id of your cable using lsusb: |
| 118 | Bus 003 Device 005: ID 0403:cff8 Future Technology Devices ... |
| 119 | ~~~~~~~~~ |
| 120 | |
| 121 | 2. Copy the sample libusb-driverrc to ~/.libusb-driverrc, edit it and replace |
| 122 | the vendor and product-id in the example file with the values provided in |
| 123 | the lsusb-output. You can also change the 'parallel port' which is mapped to |
| 124 | this cable. Impact sees the device at that port as a Parallel Cable III. |
| 125 | |
| 126 | 3. To use the device as an ordinary user, put the following line in a new file |
| 127 | in /etc/udev/rules.d/ and restart udev: |
| 128 | ACTION=="add", BUS=="usb", SYSFS{idVendor}=="0403", SYSFS{idProduct}=="cff8", MODE="666" |
| 129 | (replace the vendor and product id with your values) |
| 130 | |
| 131 | The support for FTDI 2232 based devices is experimental and they are currently |
| 132 | significantly slower than the other supported cables. |