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