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bus/wishbone/sram: expose memory component

This commit is contained in:
Sebastien Bourdeauducq 2013-11-24 23:43:14 +01:00
parent c5342c5b5c
commit 29f7b94e37
1 changed files with 6 additions and 6 deletions
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12
migen/bus/wishbone.py
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@ -288,20 +288,20 @@ class SRAM(Module):
bus_data_width = flen(self.bus.dat_r)
if isinstance(mem_or_size, Memory):
assert(mem_or_size.width <= bus_data_width)
mem = mem_or_size
self.mem = mem_or_size
else:
mem = Memory(bus_data_width, mem_or_size//(bus_data_width//8), init=init)
self.mem = Memory(bus_data_width, mem_or_size//(bus_data_width//8), init=init)
if read_only is None:
if hasattr(mem, "bus_read_only"):
read_only = mem.bus_read_only
if hasattr(self.mem, "bus_read_only"):
read_only = self.mem.bus_read_only
else:
read_only = False
###
# memory
port = mem.get_port(write_capable=not read_only, we_granularity=8)
self.specials += mem, port
port = self.mem.get_port(write_capable=not read_only, we_granularity=8)
self.specials += self.mem, port
# generate write enable signal
if not read_only:
self.comb += [port.we[i].eq(self.bus.cyc & self.bus.stb & self.bus.we & self.bus.sel[i])