litex/misoc/cores/identifier.py

27 lines
662 B
Python

import subprocess
from migen import *
from migen.bank.description import *
def get_id():
output = subprocess.check_output(["git", "rev-parse", "HEAD"]).decode("ascii")
return int(output[:8], 16)
class Identifier(Module, AutoCSR):
def __init__(self, sysid, frequency, revision=None):
self._sysid = CSRStatus(16)
self._revision = CSRStatus(32)
self._frequency = CSRStatus(32)
###
if revision is None:
revision = get_id()
self.comb += [
self._sysid.status.eq(sysid),
self._revision.status.eq(revision),
self._frequency.status.eq(frequency)
]