tinyriscv-openocd/doc
Robert Jordens d25355473d flash/nor/jtagspi: add JTAGSPI driver
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>
2015-08-06 13:14:08 +01:00
..
manual Some minor URL fixes and typo fixes, no functional changes. 2014-01-11 08:13:53 +00:00
INSTALL.txt Remove annoying end-of-line whitespace from doc/* files. 2009-09-21 18:52:45 +00:00
Makefile.am doc: add "manual/" directory in its entirety to dist 2014-03-29 07:55:30 +00:00
fdl.texi - update openocd.texi to fdl 1.2 2008-02-29 18:10:46 +00:00
openocd.1 docs: update incorrect urls 2013-03-28 23:24:40 +00:00
openocd.texi flash/nor/jtagspi: add JTAGSPI driver 2015-08-06 13:14:08 +01:00