Commit cff127da authored by William D. Jones's avatar William D. Jones Committed by Sébastien Bourdeauducq
Browse files

build/platforms: Add TinyFPGA BX board and programmer.

parent 97e26516
...@@ -54,6 +54,34 @@ class TinyFpgaBProgrammer(GenericProgrammer): ...@@ -54,6 +54,34 @@ class TinyFpgaBProgrammer(GenericProgrammer):
subprocess.call(["tinyfpgab", "-b"]) subprocess.call(["tinyfpgab", "-b"])
# Different bootloader protocol requires different application. In the basic
# case, command-line arguments are the same. Note that this programmer can
# also be used with TinyFPGA B2 if you have updated its bootloader.
class TinyProgProgrammer(GenericProgrammer):
needs_bitreverse = False
# You probably want to pass address="None" for this programmer
# unless you know what you're doing.
def flash(self, address, bitstream_file, user_data=False):
if address is None:
if not user_data:
# tinyprog looks at spi flash metadata to figure out where to
# program your bitstream.
subprocess.call(["tinyprog", "-p", bitstream_file])
else:
# Ditto with user data.
subprocess.call(["tinyprog", "-u", bitstream_file])
else:
# Provide override so user can program wherever they wish.
subprocess.call(["tinyprog", "-a", str(address), "-p",
bitstream_file])
# Force user image to boot if a user reset tinyfpga, the bootloader
# is active, and the user image need not be reprogrammed.
def boot(self):
subprocess.call(["tinyprog", "-b"])
class MyStormProgrammer(GenericProgrammer): class MyStormProgrammer(GenericProgrammer):
def __init__(self, serial_port): def __init__(self, serial_port):
self.serial_port = serial_port self.serial_port = serial_port
......
from migen.build.generic_platform import *
from migen.build.lattice import LatticePlatform
from migen.build.lattice.programmer import TinyProgProgrammer
_io = [
("user_led", 0, Pins("B3"), IOStandard("LVCMOS33")),
("usb", 0,
Subsignal("d_p", Pins("B4")),
Subsignal("d_n", Pins("A4")),
Subsignal("pullup", Pins("A3")),
IOStandard("LVCMOS33")
),
("spiflash", 0,
Subsignal("cs_n", Pins("F7"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("G7"), IOStandard("LVCMOS33")),
Subsignal("mosi", Pins("G6"), IOStandard("LVCMOS33")),
Subsignal("miso", Pins("H7"), IOStandard("LVCMOS33")),
Subsignal("wp", Pins("H4"), IOStandard("LVCMOS33")),
Subsignal("hold", Pins("J8"), IOStandard("LVCMOS33"))
),
("spiflash4x", 0,
Subsignal("cs_n", Pins("F7"), IOStandard("LVCMOS33")),
Subsignal("clk", Pins("G7"), IOStandard("LVCMOS33")),
Subsignal("dq", Pins("G6 H7 H4 J8"), IOStandard("LVCMOS33"))
),
("clk16", 0, Pins("B2"), IOStandard("LVCMOS33"))
]
_connectors = [
# A2-H2, Pins 1-13
# H9-A6, Pins 14-24
# G1-J2, Pins 25-31
("GPIO", "A2 A1 B1 C2 C1 D2 D1 E2 E1 G2 H1 J1 H2 H9 D9 D8 C9 A9 B8 A8 B7 A7 B6 A6"),
("EXTRA", "G1 J3 J4 G9 J9 E8 J2")
]
# Default peripherals
serial = [
("serial", 0,
Subsignal("tx", Pins("GPIO:0")),
Subsignal("rx", Pins("GPIO:1")),
IOStandard("LVCMOS33")
)
]
class Platform(LatticePlatform):
default_clk_name = "clk16"
default_clk_period = 62.5
def __init__(self):
LatticePlatform.__init__(self, "ice40-lp8k-cm81", _io, _connectors,
toolchain="icestorm")
def create_programmer(self):
return TinyProgProgrammer()
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