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wishbone2lasmi : add support for 32 bits lasmim data width

This commit is contained in:
Florent Kermarrec 2013-08-20 16:53:55 +02:00 committed by Sebastien Bourdeauducq
parent 37930d70ac
commit a653a6144b
1 changed files with 9 additions and 4 deletions
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13
migen/bus/wishbone2lasmi.py
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@ -11,8 +11,8 @@ class WB2LASMI(Module):
###
if lasmim.dw <= 32:
raise ValueError("LASMI data width must be strictly larger than 32")
if lasmim.dw < 32:
raise ValueError("LASMI data width must be >= 32")
if (lasmim.dw % 32) != 0:
raise ValueError("LASMI data width must be a multiple of 32")
@ -31,7 +31,12 @@ class WB2LASMI(Module):
write_from_lasmi = Signal()
write_to_lasmi = Signal()
adr_offset_r = Signal(offsetbits)
if adr_offset is None:
adr_offset_r = None
else:
adr_offset_r = Signal(offsetbits)
self.sync += adr_offset_r.eq(adr_offset)
self.comb += [
data_port.adr.eq(adr_line),
If(write_from_lasmi,
@ -49,7 +54,7 @@ class WB2LASMI(Module):
),
chooser(data_port.dat_r, adr_offset_r, self.wishbone.dat_r, reverse=True)
]
self.sync += adr_offset_r.eq(adr_offset)
# Tag memory
tag_layout = [("tag", tagbits), ("dirty", 1)]