litex/mibuild/programmer.py

75 lines
2.2 KiB
Python

import subprocess
import os
class Programmer:
def __init__(self, flash_proxy_basename=None):
self.flash_proxy_basename = flash_proxy_basename
self.flash_proxy_dirs = [
"~/.migen", "/usr/local/share/migen", "/usr/share/migen",
"~/.mlabs", "/usr/local/share/mlabs", "/usr/share/mlabs"]
def set_flash_proxy_dir(self, flash_proxy_dir):
if flash_proxy_dir is not None:
self.flash_proxy_dirs = [flash_proxy_dir]
def find_flash_proxy(self):
for d in self.flash_proxy_dirs:
fulldir = os.path.abspath(os.path.expanduser(d))
fullname = os.path.join(fulldir, self.flash_proxy_basename)
if os.path.exists(fullname):
return fullname
raise OSError("Failed to find flash proxy bitstream")
def _run_urjtag(cmds):
with subprocess.Popen("jtag", stdin=subprocess.PIPE) as process:
process.stdin.write(cmds.encode("ASCII"))
process.communicate()
class UrJTAG(Programmer):
needs_bitreverse = True
def load_bitstream(self, bitstream_file):
cmds = """cable milkymist
detect
pld load {bitstream}
quit
""".format(bitstream=bitstream_file)
_run_urjtag(cmds)
def flash(self, address, data_file):
flash_proxy = self.find_flash_proxy()
cmds = """cable milkymist
detect
pld load "{flash_proxy}"
initbus fjmem opcode=000010
frequency 6000000
detectflash 0
endian big
flashmem "{address}" "{data_file}" noverify
""".format(flash_proxy=flash_proxy, address=address, data_file=data_file)
_run_urjtag(cmds)
class XC3SProg(Programmer):
needs_bitreverse = False
def __init__(self, cable, flash_proxy_basename=None):
Programmer.__init__(self, flash_proxy_basename)
self.cable = cable
def load_bitstream(self, bitstream_file):
subprocess.call(["xc3sprog", "-v", "-c", self.cable, bitstream_file])
def flash(self, address, data_file):
flash_proxy = self.find_flash_proxy()
subprocess.call(["xc3sprog", "-v", "-c", self.cable, "-I"+flash_proxy, "{}:w:0x{:x}:BIN".format(data_file, address)])
class USBBlaster(Programmer):
needs_bitreverse = False
def load_bitstream(self, bitstream_file, port=0):
usb_port = "[USB-"+str(port)+"]"
subprocess.call(["quartus_pgm", "-m", "jtag", "-c", "USB-Blaster"+usb_port, "-o", "p;"+bitstream_file])
def flash(self, address, data_file):
raise NotImplementedError