Most Xilinx FPGA devices contain an embedded, unique device identifier
called the "Device DNA". The identifier is nonvolatile, permanently
programmed into the FPGA, and is unchangeable providing a great serial
/ tracking number.
Debugging was done in https://github.com/timvideos/HDMI2USB/issues/36
Change-Id: Iad03eafb40887f0321a4dc22858a7c3bf37a12b3
Signed-off-by: Tim 'mithro' Ansell <mithro@mithis.com>
Reviewed-on: http://openocd.zylin.com/2960
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
The Pipistrello is a low cost FPGA board with a Xilinx
Spartan6 LX45, a SPI flash and onboard FTDI JTAG.
This board is a good example use case for the jtagspi
flash driver talking through a proxy bitstream.
Change-Id: I04a80610ff825c36ebcb67b879507028eed141ad
Signed-off-by: Robert Jordens <jordens@gmail.com>
Reviewed-on: http://openocd.zylin.com/2846
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Many FPGA board speak JTAG and have a SPI flash for their bitstream
attached to them. The SPI flash is programmed by first uploading a
proxy bitstream to the FPGA that connects the JTAG interface to the
SPI interface if the IR contains a certain USER instruction. Then the
SPI flash can be erase, written, read directly through the JTAG DR.
The JTAG and SPI signaling is compatible. Such a proxy bitstream only
needs to connect TDO-MISO, TDI-MOSI, TCK-CLK, and the activate the
chip select when the IR contains the special instruction and the JTAG
state machine is in the DR-SHIFT state.
Change-Id: Ibc21d793a83b36fa37e2704966aa5c837c4dd0d2
Signed-off-by: Robert Jordens <jordens@gmail.com>
Reviewed-on: http://openocd.zylin.com/2844
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tim 'mithro' Ansell
Robert Jordens
Freddie Chopin
Wookey