* port to new migen
* streamline package/part specification
* add pullup (Series3, Series6) and pullnone (Series7) for unused pins
as xilinx impact/vivado do it.
* specify respective toolchains
* build Series7 with vivado (broader support, faster)
* point to prebuilt bitstreams at https://github.com/jordens/bscan_spi_bitstreams
Change-Id: Ibfef3d78f855b754425f3e6131e2e49fa111e09a
Signed-off-by: Robert Jordens <jordens@gmail.com>
Reviewed-on: http://openocd.zylin.com/3173
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Tested-by: jenkins
Reviewed-by: Robert Jördens
Reviewed-by: William D. Jones
Reviewed-by: Tim "mithro" Ansell <mithro@mithis.com>
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>
Robert Jordens