This boolean parameter tells you if the FPGA is programmed or not. It
can be accessed from the shell as "$fpga.programmed". One could use
this to not program the FPGA if it's already programmed.
There is an annoying limitation of the way barebox puts parameters
into the shell env: it requires they have no periods in the device
name. It uses the first period to divide the variable name into a
device and parameter name, which doesn't work correctly if the device
name has a period in it.
Since the names of any devices created from the OF device tree have a
period in them, this is a problem.
So what I did here was create a new device. Its parent will be the OF
device for the fpgamgr and it will in turn be the parent of the
firmware cdev. Previously the cdev's parent was the OF device. This
device won't have period in the name and the parameter is attached to
it. Even without the period limitation, doing this gives a nicer name
"fpga.programmed" instead of "ff706000.fpgamgr.programmed".
The fpgamgr code had a pointer to the OF device in its private state.
I changed this to be a struct for the new "fpga" device, which is then
used in all the places the former pointer was (nothing but dev_dbg,
etc. calls).
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Fix a bug in fpgamgr_program_write_buf() where .rbf file whose length
is not a multiple of 4 would cause an integer overflow which would
result in infinite loop.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
By taking parts of the programming handshaking protocol on faith it is
possible to make due with only two GPIO for programming Altera
FPGAs. This is not a very advisable practice, but sometime unavoidable
in GPIO constrained designs.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Fixes:
.../altera_serial.c:118:2: warning: too many arguments for format
Also sz is of type size_t, so use proper format specifier.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Fixes:
.../altera_serial.c:84:6: error: void value not ignored as it ought to be
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This driver uses a lot of arch specific functionality and
fails to build on anything but SOCFPGA.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This handler uses a regular SPI master and a few GPIOs to program an
Altera FPGA in serial mode.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Trent Piepho
Andrey Smirnov
Sascha Hauer
Lucas Stach
Juergen Beisert