2023-06-15 12:24:35 -04:00
|
|
|
"""
|
2023-05-30 16:01:32 -04:00
|
|
|
##########################################################################
|
2022-09-17 00:58:15 -04:00
|
|
|
# Portions of this file incorporate code licensed under the
|
2023-05-29 13:14:19 -04:00
|
|
|
# BSD 2-Clause License.
|
|
|
|
#
|
|
|
|
# Copyright (c) 2015-2019 Florent Kermarrec <florent@enjoy-digital.fr>
|
|
|
|
# Copyright (c) 2020 Antmicro <www.antmicro.com>
|
|
|
|
# Copyright (c) 2022 Victor Suarez Rovere <suarezvictor@gmail.com>
|
|
|
|
# BSD 2-Clause License
|
|
|
|
#
|
|
|
|
# Copyright (c) Copyright 2012-2022 Enjoy-Digital.
|
|
|
|
# Copyright (c) Copyright 2012-2022 / LiteX-Hub community.
|
|
|
|
# All rights reserved.
|
|
|
|
#
|
|
|
|
# Redistribution and use in source and binary forms, with or without
|
|
|
|
# modification, are permitted provided that the following conditions are met:
|
|
|
|
#
|
|
|
|
# 1. Redistributions of source code must retain the above copyright notice, this
|
|
|
|
# list of conditions and the following disclaimer.
|
|
|
|
#
|
|
|
|
# 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
|
|
# this list of conditions and the following disclaimer in the documentation
|
|
|
|
# and/or other materials provided with the distribution.
|
|
|
|
#
|
|
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
|
|
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
|
|
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
|
|
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
|
|
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
2023-05-30 16:01:32 -04:00
|
|
|
##########################################################################
|
2023-06-15 12:24:35 -04:00
|
|
|
# Copyright 2023 (C) Peter McGoron
|
|
|
|
#
|
|
|
|
# This file is a part of Upsilon, a free and open source software project.
|
|
|
|
# For license terms, refer to the files in `doc/copying` in the Upsilon
|
|
|
|
# source distribution.
|
|
|
|
"""
|
2022-07-10 19:28:32 -04:00
|
|
|
|
|
|
|
# There is nothing fundamental about the Arty A7(35|100)T to this
|
|
|
|
# design, but another eval board will require some porting.
|
|
|
|
from migen import *
|
|
|
|
import litex_boards.platforms.digilent_arty as board_spec
|
|
|
|
from litex.soc.cores.gpio import GPIOTristate
|
|
|
|
from litex.soc.integration.builder import Builder
|
2022-07-11 20:31:52 -04:00
|
|
|
from litex.build.generic_platform import IOStandard, Pins, Subsignal
|
2022-07-10 19:28:32 -04:00
|
|
|
from litex.soc.integration.soc_core import SoCCore
|
2024-01-20 15:35:16 -05:00
|
|
|
from litex.soc.integration.soc import SoCRegion
|
2022-07-10 19:28:32 -04:00
|
|
|
from litex.soc.cores.clock import S7PLL, S7IDELAYCTRL
|
2022-07-11 20:31:52 -04:00
|
|
|
from litex.soc.interconnect.csr import AutoCSR, Module, CSRStorage, CSRStatus
|
2022-07-10 19:28:32 -04:00
|
|
|
|
|
|
|
from litedram.phy import s7ddrphy
|
|
|
|
from litedram.modules import MT41K128M16
|
2023-03-15 03:04:27 -04:00
|
|
|
from litedram.frontend.dma import LiteDRAMDMAReader
|
2022-07-10 19:28:32 -04:00
|
|
|
from liteeth.phy.mii import LiteEthPHYMII
|
|
|
|
|
2023-06-28 17:38:41 -04:00
|
|
|
import mmio_descr
|
|
|
|
|
2023-05-11 16:47:24 -04:00
|
|
|
"""
|
2023-06-23 18:15:53 -04:00
|
|
|
Keep this diagram up to date! This is the wiring diagram from the ADC to
|
|
|
|
the named Verilog pins.
|
|
|
|
|
2023-06-15 13:08:01 -04:00
|
|
|
Refer to `A7-constraints.xdc` for pin names.
|
2023-05-11 16:47:24 -04:00
|
|
|
DAC: SS MOSI MISO SCK
|
|
|
|
0: 1 2 3 4 (PMOD A top, right to left)
|
|
|
|
1: 1 2 3 4 (PMOD A bottom, right to left)
|
|
|
|
2: 1 2 3 4 (PMOD B top, right to left)
|
|
|
|
3: 0 1 2 3 (Analog header)
|
|
|
|
4: 0 1 2 3 (PMOD C top, right to left)
|
|
|
|
5: 4 5 6 8 (Analog header)
|
|
|
|
6: 1 2 3 4 (PMOD D top, right to left)
|
|
|
|
7: 1 2 3 4 (PMOD D bottom, right to left)
|
|
|
|
|
|
|
|
|
|
|
|
Outer chip header (C=CONV, K=SCK, D=SDO, XX=not connected)
|
|
|
|
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
|
|
|
|
C4 K4 D4 C5 K5 D5 XX XX C6 K6 D6 C7 K7 D7 XX XX
|
|
|
|
C0 K0 D0 C1 K1 D1 XX XX C2 K2 D2 C3 K3 D3
|
|
|
|
0 1 2 3 4 5 6 7 8 9 10 11 12 13
|
2023-06-15 13:08:01 -04:00
|
|
|
|
|
|
|
The `io` list maps hardware pins to names used by the SoC
|
|
|
|
generator. These pins are then connected to Verilog modules.
|
|
|
|
|
|
|
|
If there is more than one pin in the Pins string, the resulting
|
|
|
|
name will be a vector of pins.
|
2023-05-11 16:47:24 -04:00
|
|
|
"""
|
2022-07-10 19:28:32 -04:00
|
|
|
io = [
|
2023-06-28 18:49:26 -04:00
|
|
|
("differntial_output_low", 0, Pins("J17 J18 K15 J15 U14 V14 T13 U13 B6 E5 A3"), IOStandard("LVCMOS33")),
|
|
|
|
("dac_ss_L", 0, Pins("G13 D13 E15 F5 U12 D7 D4 E2"), IOStandard("LVCMOS33")),
|
|
|
|
("dac_mosi", 0, Pins("B11 B18 E16 D8 V12 D5 D3 D2"), IOStandard("LVCMOS33")),
|
|
|
|
("dac_miso", 0, Pins("A11 A18 D15 C7 V10 B7 F4 H2"), IOStandard("LVCMOS33")),
|
|
|
|
("dac_sck", 0, Pins("D12 K16 C15 E7 V11 E6 F3 G2"), IOStandard("LVCMOS33")),
|
|
|
|
("adc_conv", 0, Pins("V15 T11 N15 U18 U11 R10 R16 U17"), IOStandard("LVCMOS33")),
|
|
|
|
("adc_sck", 0, Pins("U16 R12 M16 R17 V16 R11 N16 T18"), IOStandard("LVCMOS33")),
|
|
|
|
("adc_sdo", 0, Pins("P14 T14 V17 P17 M13 R13 N14 R18"), IOStandard("LVCMOS33")),
|
|
|
|
("module_reset", 0, Pins("D9"), IOStandard("LVCMOS33")),
|
|
|
|
("test_clock", 0, Pins("P18"), IOStandard("LVCMOS33"))
|
2022-07-10 19:28:32 -04:00
|
|
|
]
|
|
|
|
|
2023-05-11 14:36:49 -04:00
|
|
|
# TODO: Assign widths to ADCs here using parameters
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-03-08 23:17:41 -05:00
|
|
|
class Base(Module, AutoCSR):
|
2023-06-28 18:49:26 -04:00
|
|
|
""" The subclass AutoCSR will automatically make CSRs related
|
|
|
|
to this class when those CSRs are attributes (i.e. accessed by
|
|
|
|
`self.csr_name`) of instances of this class. (CSRs are MMIO,
|
2023-06-15 13:08:01 -04:00
|
|
|
they are NOT RISC-V CSRs!)
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
Since there are a lot of input and output wires, the CSRs are
|
|
|
|
assigned using `setattr()`.
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
CSRs are for input wires (`CSRStorage`) or output wires
|
|
|
|
(`CSRStatus`). The first argument to the CSR constructor is
|
|
|
|
the amount of bits the CSR takes. The `name` keyword argument
|
|
|
|
is required since the constructor needs the name of the attribute.
|
|
|
|
The `description` keyword is used for documentation.
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
In LiteX, modules in separate Verilog files are instantiated as
|
|
|
|
self.specials += Instance(
|
|
|
|
"module_name",
|
|
|
|
PARAMETER_NAME=value,
|
|
|
|
i_input = input_port,
|
|
|
|
o_output = output_port,
|
|
|
|
...
|
|
|
|
)
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
Since the "base" module has a bunch of repeated input and output
|
|
|
|
pins that have to be connected to CSRs, the LiteX wrapper uses
|
|
|
|
keyword arguments to pass all the arguments.
|
|
|
|
"""
|
2023-04-08 12:38:24 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
def _make_csr(self, reg, num=None):
|
|
|
|
""" Add a CSR for a pin `f"{name}_{num}".`
|
2023-06-15 13:08:01 -04:00
|
|
|
|
2023-06-28 17:38:41 -04:00
|
|
|
:param name: Name of the MMIO register without prefixes or numerical
|
|
|
|
suffix.
|
|
|
|
:param num: Numerical suffix of this MMIO register. This is the only
|
|
|
|
parameter that should change when adding multiple CSRs of the same
|
|
|
|
name.
|
2023-06-28 18:49:26 -04:00
|
|
|
"""
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 17:38:41 -04:00
|
|
|
name = reg.name
|
2023-06-28 18:49:26 -04:00
|
|
|
if num is not None:
|
|
|
|
name = f"{name}_{num}"
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
if reg.rwperm == "read-only":
|
2023-06-28 17:38:41 -04:00
|
|
|
csrclass = CSRStatus
|
|
|
|
else:
|
|
|
|
csrclass = CSRStorage
|
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
csr = csrclass(reg.blen, name=name, description=None)
|
|
|
|
setattr(self, name, csr)
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
if csrclass is CSRStorage:
|
|
|
|
self.kwargs[f'i_{name}'] = csr.storage
|
|
|
|
elif csrclass is CSRStatus:
|
|
|
|
self.kwargs[f'o_{name}'] = csr.status
|
|
|
|
else:
|
|
|
|
raise Exception(f"Unknown class {csrclass}")
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
def __init__(self, clk, sdram, platform):
|
|
|
|
self.kwargs = {}
|
2023-06-28 17:38:41 -04:00
|
|
|
|
|
|
|
for reg in mmio_descr.registers:
|
|
|
|
if reg.num > 1:
|
|
|
|
for i in range(0,reg.num):
|
|
|
|
self._make_csr(reg,i)
|
|
|
|
else:
|
|
|
|
self._make_csr(reg)
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
self.kwargs["i_clk"] = clk
|
|
|
|
self.kwargs["i_rst_L"] = ~platform.request("module_reset")
|
|
|
|
self.kwargs["i_dac_miso"] = platform.request("dac_miso")
|
|
|
|
self.kwargs["o_dac_mosi"] = platform.request("dac_mosi")
|
|
|
|
self.kwargs["o_dac_sck"] = platform.request("dac_sck")
|
|
|
|
self.kwargs["o_dac_ss_L"] = platform.request("dac_ss_L")
|
|
|
|
self.kwargs["o_adc_conv"] = platform.request("adc_conv")
|
|
|
|
self.kwargs["i_adc_sdo"] = platform.request("adc_sdo")
|
|
|
|
self.kwargs["o_adc_sck"] = platform.request("adc_sck")
|
|
|
|
self.kwargs["o_set_low"] = platform.request("differntial_output_low")
|
2023-04-08 13:31:12 -04:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
self.specials += Instance("base", **self.kwargs)
|
2022-07-11 20:31:52 -04:00
|
|
|
|
2022-07-21 17:07:52 -04:00
|
|
|
# Clock and Reset Generator
|
2023-04-08 12:38:24 -04:00
|
|
|
# I don't know how this works, I only know that it does.
|
2022-07-10 19:28:32 -04:00
|
|
|
class _CRG(Module):
|
2023-06-28 18:49:26 -04:00
|
|
|
def __init__(self, platform, sys_clk_freq, with_dram, rst_pin):
|
|
|
|
self.rst = Signal()
|
|
|
|
self.clock_domains.cd_sys = ClockDomain()
|
|
|
|
self.clock_domains.cd_eth = ClockDomain()
|
|
|
|
if with_dram:
|
|
|
|
self.clock_domains.cd_sys4x = ClockDomain()
|
|
|
|
self.clock_domains.cd_sys4x_dqs = ClockDomain()
|
|
|
|
self.clock_domains.cd_idelay = ClockDomain()
|
|
|
|
|
|
|
|
# Clk/Rst.
|
|
|
|
clk100 = platform.request("clk100")
|
|
|
|
rst = ~rst_pin if rst_pin is not None else 0
|
|
|
|
|
|
|
|
# PLL.
|
|
|
|
self.submodules.pll = pll = S7PLL(speedgrade=-1)
|
|
|
|
self.comb += pll.reset.eq(rst | self.rst)
|
|
|
|
pll.register_clkin(clk100, 100e6)
|
|
|
|
pll.create_clkout(self.cd_sys, sys_clk_freq)
|
|
|
|
pll.create_clkout(self.cd_eth, 25e6)
|
|
|
|
self.comb += platform.request("eth_ref_clk").eq(self.cd_eth.clk)
|
|
|
|
platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
|
|
|
|
if with_dram:
|
|
|
|
pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
|
|
|
|
pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
|
|
|
|
pll.create_clkout(self.cd_idelay, 200e6)
|
|
|
|
|
|
|
|
# IdelayCtrl.
|
|
|
|
if with_dram:
|
|
|
|
self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
|
2022-07-10 19:28:32 -04:00
|
|
|
|
2023-05-30 16:01:32 -04:00
|
|
|
class UpsilonSoC(SoCCore):
|
2024-01-18 10:41:51 -05:00
|
|
|
def add_ip(self, ip_str, ip_name):
|
2024-01-18 14:48:34 -05:00
|
|
|
for seg_num, ip_byte in enumerate(ip_str.split('.'),start=1):
|
2024-01-18 10:41:51 -05:00
|
|
|
self.add_constant(f"{ip_name}{seg_num}", int(ip_byte))
|
2024-01-20 15:23:40 -05:00
|
|
|
def add_bram(self, region_name):
|
2024-01-20 15:35:16 -05:00
|
|
|
self.bus.add_region(region_name, SoCRegion(size=0x2000, cached=False))
|
2024-01-18 10:41:51 -05:00
|
|
|
|
|
|
|
def __init__(self,
|
|
|
|
variant="a7-100",
|
|
|
|
local_ip="192.168.2.50",
|
|
|
|
remote_ip="192.168.2.100",
|
|
|
|
tftp_port=6969):
|
2023-06-28 18:49:26 -04:00
|
|
|
sys_clk_freq = int(100e6)
|
|
|
|
platform = board_spec.Platform(variant=variant, toolchain="f4pga")
|
|
|
|
rst = platform.request("cpu_reset")
|
|
|
|
self.submodules.crg = _CRG(platform, sys_clk_freq, True, rst)
|
2024-01-18 10:41:51 -05:00
|
|
|
|
2023-06-28 18:49:26 -04:00
|
|
|
"""
|
|
|
|
These source files need to be sorted so that modules
|
|
|
|
that rely on another module come later. For instance,
|
|
|
|
`control_loop` depends on `control_loop_math`, so
|
|
|
|
control_loop_math.v comes before control_loop.v
|
|
|
|
|
|
|
|
If you want to add a new verilog file to the design, look at the
|
|
|
|
modules that it refers to and place it the files with those modules.
|
|
|
|
|
|
|
|
Since Yosys doesn't support modern Verilog, only put preprocessed
|
|
|
|
(if applicable) files here.
|
|
|
|
"""
|
|
|
|
platform.add_source("rtl/spi/spi_switch_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_no_write_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_no_read_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_ss_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_ss_no_write_preprocessed.v")
|
|
|
|
platform.add_source("rtl/spi/spi_master_ss_no_read_preprocessed.v")
|
|
|
|
platform.add_source("rtl/control_loop/sign_extend.v")
|
|
|
|
platform.add_source("rtl/control_loop/intsat.v")
|
|
|
|
platform.add_source("rtl/control_loop/boothmul_preprocessed.v")
|
|
|
|
platform.add_source("rtl/control_loop/control_loop_math.v")
|
|
|
|
platform.add_source("rtl/control_loop/control_loop.v")
|
|
|
|
# platform.add_source("rtl/waveform/bram_interface_preprocessed.v")
|
|
|
|
# platform.add_source("rtl/waveform/waveform_preprocessed.v")
|
2024-01-20 15:23:40 -05:00
|
|
|
platform.add_source("rtl/bram/bram_preprocessed.v")
|
2023-06-28 18:49:26 -04:00
|
|
|
platform.add_source("rtl/base/base.v")
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# SoCCore does not have sane defaults (no integrated rom)
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SoCCore.__init__(self,
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clk_freq=sys_clk_freq,
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toolchain="symbiflow",
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platform = platform,
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bus_standard = "wishbone",
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ident = f"Arty-{variant} F4PGA LiteX VexRiscV Zephyr - Upsilon",
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bus_data_width = 32,
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bus_address_width = 32,
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bus_timeout = int(1e6),
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cpu_type = "vexriscv_smp",
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2023-05-30 17:32:04 -04:00
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cpu_count = 1,
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cpu_variant="linux",
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2023-06-28 18:49:26 -04:00
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integrated_rom_size=0x20000,
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integrated_sram_size = 0x2000,
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csr_data_width=32,
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csr_address_width=14,
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csr_paging=0x800,
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csr_ordering="big",
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timer_uptime = True)
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# This initializes the connection to the physical DRAM interface.
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self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
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memtype = "DDR3",
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nphases = 4,
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sys_clk_freq = sys_clk_freq)
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# Synchronous dynamic ram. This is what controls all access to RAM.
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# This houses the "crossbar", which negotiates all RAM accesses to different
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# modules, including the verilog interfaces (waveforms etc.)
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self.add_sdram("sdram",
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phy = self.ddrphy,
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module = MT41K128M16(sys_clk_freq, "1:4"),
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l2_cache_size = 8192
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)
|
2024-01-18 10:41:51 -05:00
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# Initialize Ethernet
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2023-06-28 18:49:26 -04:00
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self.submodules.ethphy = LiteEthPHYMII(
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clock_pads = platform.request("eth_clocks"),
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pads = platform.request("eth"))
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self.add_ethernet(phy=self.ethphy, dynamic_ip=True)
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2024-01-18 10:41:51 -05:00
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# Initialize network information
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self.add_ip(local_ip, "LOCALIP")
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self.add_ip(remote_ip, "REMOTEIP")
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self.add_constant("TFTP_SERVER_PORT", tftp_port)
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|
2024-01-20 15:23:40 -05:00
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self.add_bram("BRAM0")
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2024-01-18 10:41:51 -05:00
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# Add pins
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2023-06-28 18:49:26 -04:00
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platform.add_extension(io)
|
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|
|
self.submodules.base = Base(ClockSignal(), self.sdram, platform)
|
2022-07-10 19:28:32 -04:00
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|
|
def main():
|
2024-01-18 10:41:51 -05:00
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|
|
""" Add modifications to SoC variables here """
|
2024-01-20 15:35:16 -05:00
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|
|
soc =UpsilonSoC(variant="a7-35")
|
2023-06-28 18:49:26 -04:00
|
|
|
builder = Builder(soc, csr_json="csr.json", compile_software=True)
|
|
|
|
builder.build()
|
2022-07-10 19:28:32 -04:00
|
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|
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|
|
if __name__ == "__main__":
|
2023-06-28 18:49:26 -04:00
|
|
|
main()
|