X-Git-Url: https://git.gag.com/?a=blobdiff_plain;ds=sidebyside;f=tcl%2Finterface%2Fusb-jtag.cfg;h=8617c78c360bb840a4df140f1dc5a97ee2240e4c;hb=b0fe92dba7c01adc25e5fe3552253a4a8c69ae1a;hp=b81028d616f40d7690302a9fc3aed00edb00e5ec;hpb=84dbf8ab5a2e85c9d9c9d276fba152a45a441433;p=fw%2Fopenocd

diff --git a/tcl/interface/usb-jtag.cfg b/tcl/interface/usb-jtag.cfg
index b81028d61..8617c78c3 100644
--- a/tcl/interface/usb-jtag.cfg
+++ b/tcl/interface/usb-jtag.cfg
@@ -1,11 +1,37 @@
+# ixo-usb-jtag - Emulation of a Altera Bus Blaster I on a Cypress FX2 IC.
 #
-# Kolja Waschk's USB-JTAG
+# The ixo-usb-jtag firmware can be loaded onto a bunch of different hardware
+# including;
+#  * Xilinx USB Platform Cable
+#  * Many Digilent boards such as the Nexys, Nexys 2 and Atlys boards
+#  * Many fpga4fun.com boards from such as the Saxo and Xylo boards
+#  * The Numato Opsis
 #
-# http://www.ixo.de/info/usb_jtag/
+# Original version - http://www.ixo.de/info/usb_jtag/
+#  Updated version - http://ixo-jtag.sourceforge.net/
+#   Newest version - http://github.com/mithro/ixo-usb-jtag
 #
+# Procedure for using is;
+#  * Get the ixo-usb-jtag firmware for your hardware (or build it yourself).
+#  * Load the firmware using the fxload tool.
+#  * Use openocd.
+#
+# Unless you burn the firmware into the EEPROM on your device, power cycling
+# will require you to reload the firmware using the fxload tool. This can be
+# automated by using udev rules (which can be found in the firmware
+# repository).
+#
+# Ubuntu packages built from mithro's version (with prebuilt firmware and udev
+# rules) can be found at
+# https://launchpad.net/~timvideos/+archive/ubuntu/fpga-support
+#
+# TODO: Refactor the usb_blaster driver to allow loading firmware using any low
+# level driver. Loading firmware is currently only supported on the ublast2
+# driver but ixo-usb-jtag requires the ftdi driver.
 
-interface usb_blaster
+adapter driver usb_blaster
 usb_blaster_vid_pid 0x16C0 0x06AD
-usb_blaster_device_desc "USB-JTAG-IF"
-jtag_khz 3000
-
+usb_blaster_device_desc "Van Ooijen Technische Informatica"
+# ixo-usb-jtag is only compatible with the ublast1 protocol implemented via the
+# ftdi modes, using ublast2 will cause openocd to hang.
+usb_blaster_lowlevel_driver ftdi