litex/targets/test.py

244 lines
6.9 KiB
Python

from migen.fhdl.std import *
from migen.bank import csrgen
from migen.bus import wishbone, csr
from migen.bus import wishbone2csr
from migen.genlib.resetsync import AsyncResetSynchronizer
from migen.bank.description import *
from miscope.uart2wishbone import UART2Wishbone
from misoclib import identifier
from lib.sata.common import *
from lib.sata.phy import SATAPHY
from lib.sata import SATACON
from migen.genlib.cdc import *
class _CRG(Module):
def __init__(self, platform):
self.clock_domains.cd_sys = ClockDomain()
self.clock_domains.cd_por = ClockDomain(reset_less=True)
clk200 = platform.request("clk200")
clk200_se = Signal()
self.specials += Instance("IBUFDS", i_I=clk200.p, i_IB=clk200.n, o_O=clk200_se)
pll_locked = Signal()
pll_fb = Signal()
pll_sys = Signal()
self.specials += [
Instance("PLLE2_BASE",
p_STARTUP_WAIT="FALSE", o_LOCKED=pll_locked,
# VCO @ 1GHz
p_REF_JITTER1=0.01, p_CLKIN1_PERIOD=5.0,
p_CLKFBOUT_MULT=5, p_DIVCLK_DIVIDE=1,
i_CLKIN1=clk200_se, i_CLKFBIN=pll_fb, o_CLKFBOUT=pll_fb,
# 100MHz
p_CLKOUT0_DIVIDE=5, p_CLKOUT0_PHASE=0.0, o_CLKOUT0=pll_sys,
p_CLKOUT1_DIVIDE=2, p_CLKOUT1_PHASE=0.0, #o_CLKOUT1=,
p_CLKOUT2_DIVIDE=2, p_CLKOUT2_PHASE=0.0, #o_CLKOUT2=,
p_CLKOUT3_DIVIDE=2, p_CLKOUT3_PHASE=0.0, #o_CLKOUT3=,
p_CLKOUT4_DIVIDE=2, p_CLKOUT4_PHASE=0.0, #o_CLKOUT4=
),
Instance("BUFG", i_I=pll_sys, o_O=self.cd_sys.clk),
AsyncResetSynchronizer(self.cd_sys, ~pll_locked | platform.request("cpu_reset")),
]
class UART2WB(Module):
csr_base = 0x00000000
csr_data_width = 8
csr_map = {
"uart2wb": 0,
"identifier": 2,
}
interrupt_map = {}
cpu_type = None
def __init__(self, platform, clk_freq):
self.uart2wb = UART2Wishbone(platform.request("serial"), clk_freq, baud=921600)
# CSR bridge 0x00000000 (shadow @0x00000000)
self.wishbone2csr = wishbone2csr.WB2CSR(bus_csr=csr.Interface(self.csr_data_width))
self._wb_masters = [self.uart2wb.wishbone]
self._wb_slaves = [(lambda a: a[23:25] == 0, self.wishbone2csr.wishbone)]
self.cpu_csr_regions = [] # list of (name, origin, busword, csr_list/Memory)
# CSR
self.identifier = identifier.Identifier(0, int(clk_freq), 0)
def add_wb_master(self, wbm):
if self.finalized:
raise FinalizeError
self._wb_masters.append(wbm)
def add_wb_slave(self, address_decoder, interface):
if self.finalized:
raise FinalizeError
self._wb_slaves.append((address_decoder, interface))
def add_cpu_memory_region(self, name, origin, length):
self.cpu_memory_regions.append((name, origin, length))
def add_cpu_csr_region(self, name, origin, busword, obj):
self.cpu_csr_regions.append((name, origin, busword, obj))
def do_finalize(self):
# Wishbone
self.wishbonecon = wishbone.InterconnectShared(self._wb_masters,
self._wb_slaves, register=True)
# CSR
self.csrbankarray = csrgen.BankArray(self,
lambda name, memory: self.csr_map[name if memory is None else name + "_" + memory.name_override],
data_width=self.csr_data_width)
self.csrcon = csr.Interconnect(self.wishbone2csr.csr, self.csrbankarray.get_buses())
for name, csrs, mapaddr, rmap in self.csrbankarray.banks:
self.add_cpu_csr_region(name, 0xe0000000+0x800*mapaddr, flen(rmap.bus.dat_w), csrs)
for name, memory, mapaddr, mmap in self.csrbankarray.srams:
self.add_cpu_csr_region(name, 0xe0000000+0x800*mapaddr, flen(rmap.bus.dat_w), memory)
class SimDesign(UART2WB):
default_platform = "kc705"
def __init__(self, platform, export_mila=False):
clk_freq = 200*1000000
UART2WB.__init__(self, platform, clk_freq)
self.crg = _CRG(platform)
self.sata_phy_host = SATAPHY(platform.request("sata_host"), clk_freq, host=True)
self.comb += [
self.sata_phy_host.sink.stb.eq(1),
self.sata_phy_host.sink.data.eq(primitives["SYNC"]),
self.sata_phy_host.sink.charisk.eq(0b0001)
]
self.sata_phy_device = SATAPHY(platform.request("sata_device"), clk_freq, host=False)
self.comb += [
self.sata_phy_device.sink.stb.eq(1),
self.sata_phy_device.sink.data.eq(primitives["SYNC"]),
self.sata_phy_device.sink.charisk.eq(0b0001)
]
class ClockLeds(Module):
def __init__(self, platform):
led_sata_rx = platform.request("user_led", 0)
led_sata_tx = platform.request("user_led", 1)
sata_rx_cnt = Signal(32)
sata_tx_cnt = Signal(32)
self.sync.sata_rx += \
If(sata_rx_cnt == 0,
led_sata_rx.eq(~led_sata_rx),
sata_rx_cnt.eq(150*1000*1000//2)
).Else(
sata_rx_cnt.eq(sata_rx_cnt-1)
)
self.sync.sata_tx += \
If(sata_tx_cnt == 0,
led_sata_tx.eq(~led_sata_tx),
sata_tx_cnt.eq(150*1000*1000//2)
).Else(
sata_tx_cnt.eq(sata_tx_cnt-1)
)
class IdentifyRequester(Module, AutoCSR):
def __init__(self, sata_con):
self._req = CSRStorage()
req = self._req.storage
self.comb += [
sata_con.sink.stb.eq(req),
sata_con.sink.sop.eq(1),
sata_con.sink.eop.eq(1),
sata_con.sink.identify.eq(1),
sata_con.sink.sector.eq(0),
sata_con.sink.count.eq(1),
sata_con.sink.data.eq(0),
sata_con.sink.ack.eq(1),
]
class TestDesign(UART2WB, AutoCSR):
default_platform = "kc705"
csr_map = {
"mila": 10,
"identify_requester": 11
}
csr_map.update(UART2WB.csr_map)
def __init__(self, platform, mila=True, export_mila=False):
clk_freq = 200*1000000
UART2WB.__init__(self, platform, clk_freq)
self.crg = _CRG(platform)
self.sata_phy = SATAPHY(platform.request("sata_host"), clk_freq, host=True, speed="SATA1")
self.sata_con = SATACON(self.sata_phy, sector_size=512, max_count=8)
self.identify_requester = IdentifyRequester(self.sata_con)
self.clock_leds = ClockLeds(platform)
if mila:
import os
from miscope import MiLa, Term, UART2Wishbone
trx = self.sata_phy.trx
ctrl = self.sata_phy.ctrl
crg = self.sata_phy.crg
debug = (
ctrl.ready,
ctrl.sink.data,
ctrl.sink.charisk,
self.sata_phy.source.stb,
self.sata_phy.source.data,
self.sata_phy.source.charisk,
self.sata_phy.sink.stb,
self.sata_phy.sink.data,
self.sata_phy.sink.charisk,
self.sata_phy.datapath.tx.sink.stb,
self.sata_phy.datapath.tx.sink.data,
self.sata_phy.datapath.tx.sink.charisk,
self.sata_phy.datapath.tx.sink.ack,
self.sata_con.sink.stb,
self.sata_con.sink.sop,
self.sata_con.sink.eop,
self.sata_con.sink.ack,
self.sata_con.sink.identify,
self.sata_con.source.stb,
self.sata_con.source.sop,
self.sata_con.source.eop,
self.sata_con.source.ack,
self.sata_con.source.write,
self.sata_con.source.read,
self.sata_con.source.identify,
self.sata_con.source.success,
self.sata_con.source.failed,
self.sata_con.source.data
)
self.comb += platform.request("user_led", 2).eq(crg.ready)
self.comb += platform.request("user_led", 3).eq(ctrl.ready)
self.mila = MiLa(depth=2048, dat=Cat(*debug))
self.mila.add_port(Term)
if export_mila:
mila_filename = os.path.join(platform.soc_ext_path, "test", "mila.csv")
self.mila.export(self, debug, mila_filename)
#default_subtarget = SimDesign
default_subtarget = TestDesign