361 lines
14 KiB
Python
361 lines
14 KiB
Python
# Portions of this file incorporate code licensed under the
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# BSD 2-Clause License. See COPYING.
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# There is nothing fundamental about the Arty A7(35|100)T to this
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# design, but another eval board will require some porting.
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from migen import *
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import litex_boards.platforms.digilent_arty as board_spec
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from litex.soc.cores.gpio import GPIOTristate
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from litex.soc.integration.builder import Builder
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from litex.build.generic_platform import IOStandard, Pins, Subsignal
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from litex.soc.integration.soc_core import SoCCore
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from litex.soc.cores.clock import S7PLL, S7IDELAYCTRL
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from litex.soc.interconnect.csr import AutoCSR, Module, CSRStorage, CSRStatus
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from litedram.phy import s7ddrphy
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from litedram.modules import MT41K128M16
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from liteeth.phy.mii import LiteEthPHYMII
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# Refer to `A7-constraints.xdc` for pin names.
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# IO with Subsignals make Record types, which have the name of the
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# subsignal as an attribute.
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io = [
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("dac_ss", 0, Pins("G13 D13 E15 J17 U12 U14 D4 E2"), IOStandard("LVCMOS33")),
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("dac_mosi", 0, Pins("B11 B18 E16 J18 V12 V14 D3 D2"), IOStandard("LVCMOS33")),
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("dac_miso", 0, Pins("A11 A18 D15 K15 V10 T13 F4 H2"), IOStandard("LVCMOS33")),
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("dac_sck", 0, Pins("D12 K16 C15 J15 V11 U13 F3 G2"), IOStandard("LVCMOS33")),
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("adc_conv", 0, Pins("V15 T11 N15 U18 U11 R10 R16 U17"), IOStandard("LVCMOS33")),
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("adc_sck", 0, Pins("U16 R12 M16 R17 V16 R11 N16 T18"), IOStandard("LVCMOS33")),
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("adc_sdo", 0, Pins("P14 T14 V17 P17 M13 R13 N14 R18"), IOStandard("LVCMOS33"))
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]
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class Base(Module, AutoCSR):
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def __init__(self, clk, sdram):
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for i in range(0,8):
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setattr(self, f"dac_sel_{i}", CSRStorage(3))
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setattr(self, f"dac_finished_{i}", CSRStatus(1))
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setattr(self, f"dac_arm_{i}", CSRStorage(1))
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setattr(self, f"from_dac_{i}", CSRStatus(24))
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setattr(self, f"to_dac_{i}", CSRStorage(24))
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setattr(self, f"wf_arm_{i}", CSRStorage(1))
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setattr(self, f"wf_time_to_wait_{i}", CSRStorage(16))
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setattr(self, f"wf_refresh_start_{i}", CSRStorage(1))
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setattr(self, f"wf_refresh_finished_{i}", CSRStatus(1))
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setattr(self, f"wf_start_addr_{i}", CSRStorage(32))
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port = sdram.crossbar.get_port()
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setattr(self, f"wf_sdram_{i}", LiteDRAMDMAReader(port))
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setattr(self, f"adc_finished_{i}", CSRStatus(1))
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setattr(self, f"adc_arm_{i}", CSRStorage(1))
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setattr(self, f"from_adc_{i}", CSRStatus(32))
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self.adc_sel_0 = CSRStorage(2)
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self.cl_in_loop = CSRStatus(1)
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self.cl_cmd = CSRStorage(64)
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self.cl_word_in = CSRStorage(32)
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self.cl_word_out = CSRStatus(32)
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self.cl_start_cmd = CSRStorage(1)
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self.cl_finish_cmd = CSRStatus(1)
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self.specials = Instance("base",
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i_clk(clk),
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.i_dac_miso(platform.request("dac_miso")),
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.o_dac_mosi(platform.request("dac_mosi")),
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.o_dac_sck(platform.request("dac_sck")),
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.o_dac_ss_L(platform.request("dac_ss_L")),
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.o_adc_conv(platform.request("adc_conv")),
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.i_adc_sdo(platform.request("adc_sdo")),
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.o_adc_sck(platform.request("adc_sck")),
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# dac_0
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.i_dac_sel_0(self.dac_sel_0.storage),
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.o_dac_finished_0(self.dac_finished_0.status),
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.i_dac_arm_0(self.dac_arm_0.storage),
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.o_from_dac_0(self.from_dac_0.status),
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.i_to_dac_0(self.to_dac_0.storage),
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.i_wf_arm_0(self.wf_arm_0.storage),
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.i_wf_time_to_wait_0(self.wf_time_to_wait_0.storage),
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.i_wf_refresh_start_0(self.wf_refresh_start_0.storage),
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.o_wf_refresh_finished_0(self.wf_refresh_finished_0.status),
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.o_wf_start_addr_0(self.wf_start_addr_0.storage),
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.o_wf_ram_dma_addr_0(self.wf_sdram_0.sink.address),
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.i_wf_ram_word_0(self.wf_sdram_0.source.data),
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.o_wf_ram_read_0(self.wf_sdram_0.sink.valid),
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.i_wf_ram_valid_0(self.wf_sdram_0.source.valid),
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# dac_1
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.i_dac_sel_1(self.dac_sel_1.storage),
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.o_dac_finished_1(self.dac_finished_1.status),
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.i_dac_arm_1(self.dac_arm_1.storage),
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.o_from_dac_1(self.from_dac_1.status),
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.i_to_dac_1(self.to_dac_1.storage),
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.i_wf_arm_1(self.wf_arm_1.storage),
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.i_wf_time_to_wait_1(self.wf_time_to_wait_1.storage),
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.i_wf_refresh_start_1(self.wf_refresh_start_1.storage),
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.o_wf_refresh_finished_1(self.wf_refresh_finished_1.status),
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.o_wf_start_addr_1(self.wf_start_addr_1.storage),
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.o_wf_ram_dma_addr_1(self.wf_sdram_1.sink.address),
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.i_wf_ram_word_1(self.wf_sdram_1.source.data),
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.o_wf_ram_read_1(self.wf_sdram_1.sink.valid),
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.i_wf_ram_valid_1(self.wf_sdram_1.source.valid),
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# dac_2
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.i_dac_sel_2(self.dac_sel_2.storage),
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.o_dac_finished_2(self.dac_finished_2.status),
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.i_dac_arm_2(self.dac_arm_2.storage),
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.o_from_dac_2(self.from_dac_2.status),
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.i_to_dac_2(self.to_dac_2.storage),
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.i_wf_arm_2(self.wf_arm_2.storage),
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.i_wf_time_to_wait_2(self.wf_time_to_wait_2.storage),
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.i_wf_refresh_start_2(self.wf_refresh_start_2.storage),
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.o_wf_refresh_finished_2(self.wf_refresh_finished_2.status),
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.o_wf_start_addr_2(self.wf_start_addr_2.storage),
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.o_wf_ram_dma_addr_2(self.wf_sdram_2.sink.address),
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.i_wf_ram_word_2(self.wf_sdram_2.source.data),
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.o_wf_ram_read_2(self.wf_sdram_2.sink.valid),
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.i_wf_ram_valid_2(self.wf_sdram_2.source.valid),
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# dac_3
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.i_dac_sel_3(self.dac_sel_3.storage),
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.o_dac_finished_3(self.dac_finished_3.status),
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.i_dac_arm_3(self.dac_arm_3.storage),
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.o_from_dac_3(self.from_dac_3.status),
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.i_to_dac_3(self.to_dac_3.storage),
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.i_wf_arm_3(self.wf_arm_3.storage),
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.i_wf_time_to_wait_3(self.wf_time_to_wait_3.storage),
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.i_wf_refresh_start_3(self.wf_refresh_start_3.storage),
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.o_wf_refresh_finished_3(self.wf_refresh_finished_3.status),
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.o_wf_start_addr_3(self.wf_start_addr_3.storage),
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.o_wf_ram_dma_addr_3(self.wf_sdram_3.sink.address),
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.i_wf_ram_word_3(self.wf_sdram_3.source.data),
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.o_wf_ram_read_3(self.wf_sdram_3.sink.valid),
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.i_wf_ram_valid_3(self.wf_sdram_3.source.valid),
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# dac_4
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.i_dac_sel_4(self.dac_sel_4.storage),
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.o_dac_finished_4(self.dac_finished_4.status),
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.i_dac_arm_4(self.dac_arm_4.storage),
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.o_from_dac_4(self.from_dac_4.status),
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.i_to_dac_4(self.to_dac_4.storage),
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.i_wf_arm_4(self.wf_arm_4.storage),
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.i_wf_time_to_wait_4(self.wf_time_to_wait_4.storage),
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.i_wf_refresh_start_4(self.wf_refresh_start_4.storage),
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.o_wf_refresh_finished_4(self.wf_refresh_finished_4.status),
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.o_wf_start_addr_4(self.wf_start_addr_4.storage),
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.o_wf_ram_dma_addr_4(self.wf_sdram_4.sink.address),
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.i_wf_ram_word_4(self.wf_sdram_4.source.data),
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.o_wf_ram_read_4(self.wf_sdram_4.sink.valid),
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.i_wf_ram_valid_4(self.wf_sdram_4.source.valid),
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# dac_5
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.i_dac_sel_5(self.dac_sel_5.storage),
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.o_dac_finished_5(self.dac_finished_5.status),
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.i_dac_arm_5(self.dac_arm_5.storage),
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.o_from_dac_5(self.from_dac_5.status),
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.i_to_dac_5(self.to_dac_5.storage),
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.i_wf_arm_5(self.wf_arm_5.storage),
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.i_wf_time_to_wait_5(self.wf_time_to_wait_5.storage),
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.i_wf_refresh_start_5(self.wf_refresh_start_5.storage),
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.o_wf_refresh_finished_5(self.wf_refresh_finished_5.status),
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.o_wf_start_addr_5(self.wf_start_addr_5.storage),
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.o_wf_ram_dma_addr_5(self.wf_sdram_5.sink.address),
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.i_wf_ram_word_5(self.wf_sdram_5.source.data),
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.o_wf_ram_read_5(self.wf_sdram_5.sink.valid),
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.i_wf_ram_valid_5(self.wf_sdram_5.source.valid),
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# dac_6
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.i_dac_sel_6(self.dac_sel_6.storage),
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.o_dac_finished_6(self.dac_finished_6.status),
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.i_dac_arm_6(self.dac_arm_6.storage),
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.o_from_dac_6(self.from_dac_6.status),
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.i_to_dac_6(self.to_dac_6.storage),
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.i_wf_arm_6(self.wf_arm_6.storage),
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.i_wf_time_to_wait_6(self.wf_time_to_wait_6.storage),
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.i_wf_refresh_start_6(self.wf_refresh_start_6.storage),
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.o_wf_refresh_finished_6(self.wf_refresh_finished_6.status),
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.o_wf_start_addr_6(self.wf_start_addr_6.storage),
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.o_wf_ram_dma_addr_6(self.wf_sdram_6.sink.address),
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.i_wf_ram_word_6(self.wf_sdram_6.source.data),
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.o_wf_ram_read_6(self.wf_sdram_6.sink.valid),
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.i_wf_ram_valid_6(self.wf_sdram_6.source.valid),
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# dac_7
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.i_dac_sel_7(self.dac_sel_7.storage),
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.o_dac_finished_7(self.dac_finished_7.status),
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.i_dac_arm_7(self.dac_arm_7.storage),
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.o_from_dac_7(self.from_dac_7.status),
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.i_to_dac_7(self.to_dac_7.storage),
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.i_wf_arm_7(self.wf_arm_7.storage),
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.i_wf_time_to_wait_7(self.wf_time_to_wait_7.storage),
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.i_wf_refresh_start_7(self.wf_refresh_start_7.storage),
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.o_wf_refresh_finished_7(self.wf_refresh_finished_7.status),
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.o_wf_start_addr_7(self.wf_start_addr_7.storage),
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.o_wf_ram_dma_addr_7(self.wf_sdram_7.sink.address),
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.i_wf_ram_word_7(self.wf_sdram_7.source.data),
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.o_wf_ram_read_7(self.wf_sdram_7.sink.valid),
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.i_wf_ram_valid_7(self.wf_sdram_7.source.valid),
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.i_adc_sel_0(self.adc_sel_0.storage),
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# adc_0
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.o_adc_finished_0(self.adc_finished_0.status),
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.i_adc_arm_0(self.adc_arm_0.storage),
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.o_from_adc_0(self.from_adc_0.status),
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# adc_1
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.o_adc_finished_1(self.adc_finished_1.status),
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.i_adc_arm_1(self.adc_arm_1.storage),
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.o_from_adc_1(self.from_adc_1.status),
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# adc_2
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.o_adc_finished_2(self.adc_finished_2.status),
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.i_adc_arm_2(self.adc_arm_2.storage),
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.o_from_adc_2(self.from_adc_2.status),
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# adc_3
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.o_adc_finished_3(self.adc_finished_3.status),
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.i_adc_arm_3(self.adc_arm_3.storage),
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.o_from_adc_3(self.from_adc_3.status),
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# adc_4
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.o_adc_finished_4(self.adc_finished_4.status),
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.i_adc_arm_4(self.adc_arm_4.storage),
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.o_from_adc_4(self.from_adc_4.status),
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# adc_5
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.o_adc_finished_5(self.adc_finished_5.status),
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.i_adc_arm_5(self.adc_arm_5.storage),
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.o_from_adc_5(self.from_adc_5.status),
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# adc_6
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.o_adc_finished_6(self.adc_finished_6.status),
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.i_adc_arm_6(self.adc_arm_6.storage),
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.o_from_adc_6(self.from_adc_6.status),
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# adc_7
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.o_adc_finished_7(self.adc_finished_7.status),
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.i_adc_arm_7(self.adc_arm_7.storage),
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.o_from_adc_7(self.from_adc_7.status),
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.o_cl_in_loop(self.cl_in_loop.status),
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.i_cl_cmd(self.cl_cmd.storage),
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.i_cl_word_in(self.cl_word_in.storage),
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.o_cl_word_out(self.cl_word_out.status),
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.i_cl_start_cmd(self.cl_start_cmd.storage),
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.o_cl_finish_cmd(self.cl_finish_cmd.status)
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)
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# Clock and Reset Generator
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class _CRG(Module):
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def __init__(self, platform, sys_clk_freq, with_dram=True, with_rst=True):
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self.rst = Signal()
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self.clock_domains.cd_sys = ClockDomain()
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self.clock_domains.cd_eth = ClockDomain()
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if with_dram:
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self.clock_domains.cd_sys4x = ClockDomain()
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self.clock_domains.cd_sys4x_dqs = ClockDomain()
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self.clock_domains.cd_idelay = ClockDomain()
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# Clk/Rst.
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clk100 = platform.request("clk100")
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rst = ~platform.request("cpu_reset") if with_rst else 0
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# PLL.
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self.submodules.pll = pll = S7PLL(speedgrade=-1)
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self.comb += pll.reset.eq(rst | self.rst)
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pll.register_clkin(clk100, 100e6)
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pll.create_clkout(self.cd_sys, sys_clk_freq)
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pll.create_clkout(self.cd_eth, 25e6)
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self.comb += platform.request("eth_ref_clk").eq(self.cd_eth.clk)
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platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
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if with_dram:
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pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
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pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
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pll.create_clkout(self.cd_idelay, 200e6)
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# IdelayCtrl.
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if with_dram:
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self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
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class CryoSNOM1SoC(SoCCore):
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def __init__(self, variant):
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sys_clk_freq = int(100e6)
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platform = board_spec.Platform(variant=variant, toolchain="symbiflow")
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self.submodules.crg = _CRG(platform, sys_clk_freq, True)
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platform.add_source("rtl/spi/spi_master_ss.v")
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platform.add_source("rtl/spi/spi_master_ss_no_write.v")
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platform.add_source("rtl/control_loop/sign_extend.v")
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platform.add_source("rtl/control_loop/intsat.v")
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platform.add_source("rtl/control_loop/boothmul.v")
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platform.add_source("rtl/control_loop/control_loop_math.v")
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platform.add_source("rtl/control_loop/control_loop.v")
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platform.add_source("rtl/control_loop/spi_switch.v")
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platform.add_source("rtl/waveform/waveform.v")
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platform.add_source("rtl/spi/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 CryoSNOM1 0.1",
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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",
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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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)
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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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# Add the DAC and ADC pins as GPIO. They will be used directly
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# by Zephyr.
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platform.add_extension(io)
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self.submodules.sdram = Base(ClockSignal(), self.sdram)
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def main():
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soc = CryoSNOM1SoC("a7-35")
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builder = Builder(soc, csr_json="csr.json")
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builder.build()
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if __name__ == "__main__":
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main()
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