soc/integration: add initial SoCZynq SoC

diff --git a/litex/soc/integration/soc_zynq.py b/litex/soc/integration/soc_zynq.py
new file mode 100644 (file)
index 0000000..955402c
--- /dev/null
+++ b/litex/soc/integration/soc_zynq.py
@@ -0,0 +1,123 @@
+import os
+
+from migen import *
+
+from litex.build.generic_platform import tools
+from litex.soc.integration.soc_core import *
+from litex.soc.integration.cpu_interface import get_csr_header
+from litex.soc.interconnect import wishbone
+from litex.soc.interconnect import axi
+
+
+class SoCZynq(SoCCore):
+    SoCCore.mem_map["csr"] = 0x00000000
+    def __init__(self, platform, clk_freq, ps7_name, **kwargs):
+        SoCCore.__init__(self, platform, clk_freq, cpu_type=None, shadow_base=0x00000000, **kwargs)
+
+        # PS7 --------------------------------------------------------------------------------------
+        self.axi_gp0 = axi_gp0 = axi.AXIInterface(data_width=32, address_width=32, id_width=12)
+        ps7_ddram_pads = platform.request("ps7_ddram")
+        self.specials += Instance(ps7_name,
+            # clk/rst
+            io_PS_CLK=platform.request("ps7_clk"),
+            io_PS_PORB=platform.request("ps7_porb"),
+            io_PS_SRSTB=platform.request("ps7_srstb"),
+
+            # mio
+            io_MIO=platform.request("ps7_mio"),
+
+            # ddram
+            io_DDR_Addr=ps7_ddram_pads.addr,
+            io_DDR_BankAddr=ps7_ddram_pads.ba,
+            io_DDR_CAS_n=ps7_ddram_pads.cas_n,
+            io_DDR_Clk_n=ps7_ddram_pads.ck_n,
+            io_DDR_Clk=ps7_ddram_pads.ck_p,
+            io_DDR_CKE=ps7_ddram_pads.cke,
+            io_DDR_CS_n=ps7_ddram_pads.cs_n,
+            io_DDR_DM=ps7_ddram_pads.dm,
+            io_DDR_DQ=ps7_ddram_pads.dq,
+            io_DDR_DQS_n=ps7_ddram_pads.dqs_n,
+            io_DDR_DQS=ps7_ddram_pads.dqs_p,
+            io_DDR_ODT=ps7_ddram_pads.odt,
+            io_DDR_RAS_n=ps7_ddram_pads.ras_n,
+            io_DDR_DRSTB=ps7_ddram_pads.reset_n,
+            io_DDR_WEB=ps7_ddram_pads.we_n,
+            io_DDR_VRN=ps7_ddram_pads.vrn,
+            io_DDR_VRP=ps7_ddram_pads.vrp,
+
+            # ethernet
+            i_ENET0_MDIO_I=0,
+
+            # sdio0
+            i_SDIO0_WP=0,
+
+            # usb0
+            i_USB0_VBUS_PWRFAULT=0,
+
+            # fabric clk
+            o_FCLK_CLK0=ClockSignal("sys"),
+
+            # axi clk
+            i_M_AXI_GP0_ACLK=ClockSignal("sys"),
+
+            # axi aw
+            o_M_AXI_GP0_AWVALID=axi_gp0.aw.valid,
+            i_M_AXI_GP0_AWREADY=axi_gp0.aw.ready,
+            o_M_AXI_GP0_AWADDR=axi_gp0.aw.addr,
+            o_M_AXI_GP0_AWBURST=axi_gp0.aw.burst,
+            o_M_AXI_GP0_AWLEN=axi_gp0.aw.len,
+            o_M_AXI_GP0_AWSIZE=axi_gp0.aw.size,
+            o_M_AXI_GP0_AWID=axi_gp0.aw.id,
+            #o_M_AXI_GP0_AWLOCK  =,
+            #o_M_AXI_GP0_AWPROT  =,
+            #o_M_AXI_GP0_AWCACHE =,
+            #o_M_AXI_GP0_AWQOS   =,
+
+            # axi w
+            o_M_AXI_GP0_WVALID=axi_gp0.w.valid,
+            o_M_AXI_GP0_WLAST=axi_gp0.w.last,
+            i_M_AXI_GP0_WREADY=axi_gp0.w.ready,
+            #o_M_AXI_GP0_WID=,
+            o_M_AXI_GP0_WDATA=axi_gp0.w.data,
+            o_M_AXI_GP0_WSTRB=axi_gp0.w.strb,
+
+            # axi b
+            i_M_AXI_GP0_BVALID=axi_gp0.b.valid,
+            o_M_AXI_GP0_BREADY=axi_gp0.b.ready,
+            i_M_AXI_GP0_BID=axi_gp0.b.id,
+            i_M_AXI_GP0_BRESP=axi_gp0.b.resp,
+
+            # axi ar
+            o_M_AXI_GP0_ARVALID=axi_gp0.ar.valid,
+            i_M_AXI_GP0_ARREADY=axi_gp0.ar.ready,
+            o_M_AXI_GP0_ARADDR=axi_gp0.ar.addr,
+            o_M_AXI_GP0_ARBURST=axi_gp0.ar.burst,
+            o_M_AXI_GP0_ARLEN=axi_gp0.ar.len,
+            o_M_AXI_GP0_ARID=axi_gp0.ar.id,
+            #o_M_AXI_GP0_ARLOCK=,
+            #o_M_AXI_GP0_ARSIZE=,
+            #o_M_AXI_GP0_ARPROT=,
+            #o_M_AXI_GP0_ARCACHE=,
+            #o_M_AXI_GP0_ARQOS=,
+
+            # axi r
+            i_M_AXI_GP0_RVALID=axi_gp0.r.valid,
+            o_M_AXI_GP0_RREADY=axi_gp0.r.ready,
+            i_M_AXI_GP0_RLAST=axi_gp0.r.last,
+            i_M_AXI_GP0_RID=axi_gp0.r.id,
+            i_M_AXI_GP0_RRESP=axi_gp0.r.resp,
+            i_M_AXI_GP0_RDATA=axi_gp0.r.data,
+        )
+        platform.add_ip(os.path.join("ip", ps7_name + ".xci"))
+
+        # AXI to Wishbone --------------------------------------------------------------------------
+        self.wb_gp0 = wb_gp0 = wishbone.Interface()
+        axi2wishbone = axi.AXI2Wishbone(axi_gp0, wb_gp0, base_address=0x43c00000)
+        self.submodules += axi2wishbone
+        self.add_wb_master(wb_gp0)
+
+    def generate_software_header(self, filename):
+        csr_header = get_csr_header(self.get_csr_regions(),
+                                    self.get_constants(),
+                                    with_access_functions=False)
+        tools.write_to_file(filename, csr_header)