targets/nexys_video: add SATA support.

litex-hub · Nov 2, 2020 · babf638 · babf638
1 parent af96f4e
commit babf638
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Showing 2 changed files with 36 additions and 5 deletions.
diff --git a/litex_boards/targets/kc705.py b/litex_boards/targets/kc705.py
@@ -86,7 +86,7 @@ def __init__(self, sys_clk_freq=int(150e6), with_ethernet=False, with_sata=False
             self.add_csr("ethphy")
             self.add_ethernet(phy=self.ethphy)
 
-        # SATA (Experimental) ----------------------------------------------------------------------
+        # SATA -------------------------------------------------------------------------------------
         if with_sata:
             from litex.build.generic_platform import Subsignal, Pins
             from litesata.phy import LiteSATAPHY

diff --git a/litex_boards/targets/nexys_video.py b/litex_boards/targets/nexys_video.py
@@ -50,7 +50,7 @@ def __init__(self, platform, sys_clk_freq):
 # BaseSoC ------------------------------------------------------------------------------------------
 
 class BaseSoC(SoCCore):
-    def __init__(self, sys_clk_freq=int(100e6), with_ethernet=False, **kwargs):
+    def __init__(self, sys_clk_freq=int(100e6), with_ethernet=False, with_sata=False, **kwargs):
         platform = nexys_video.Platform()
 
         # SoCCore ----------------------------------------------------------------------------------
@@ -87,6 +87,36 @@ def __init__(self, sys_clk_freq=int(100e6), with_ethernet=False, **kwargs):
             self.add_csr("ethphy")
             self.add_ethernet(phy=self.ethphy)
 
+        # SATA -------------------------------------------------------------------------------------
+        if with_sata:
+            from litex.build.generic_platform import Subsignal, Pins
+            from litesata.phy import LiteSATAPHY
+
+            # IOs
+            _sata_io = [
+                # AB09-FMCRAID / https://www.dgway.com/AB09-FMCRAID_E.html
+                ("fmc2sata", 0,
+                    Subsignal("clk_p", Pins("LPC:GBTCLK0_M2C_P")),
+                    Subsignal("clk_n", Pins("LPC:GBTCLK0_M2C_N")),
+                    Subsignal("tx_p",  Pins("LPC:DP0_C2M_P")),
+                    Subsignal("tx_n",  Pins("LPC:DP0_C2M_N")),
+                    Subsignal("rx_p",  Pins("LPC:DP0_M2C_P")),
+                    Subsignal("rx_n",  Pins("LPC:DP0_M2C_N"))
+                ),
+            ]
+            platform.add_extension(_sata_io)
+
+            # PHY
+            self.submodules.sata_phy = LiteSATAPHY(platform.device,
+                pads       = platform.request("fmc2sata"),
+                gen        = "gen2",
+                clk_freq   = sys_clk_freq,
+                data_width = 16)
+            self.add_csr("sata_phy")
+
+            # Core
+            self.add_sata(phy=self.sata_phy, mode="read+write")
+
         # Leds -------------------------------------------------------------------------------------
         self.submodules.leds = LedChaser(
             pads         = platform.request_all("user_led"),
@@ -101,12 +131,13 @@ def main():
     parser.add_argument("--load",  action="store_true", help="Load bitstream")
     builder_args(parser)
     soc_sdram_args(parser)
-    parser.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support")
+    parser.add_argument("--with-ethernet",   action="store_true", help="Enable Ethernet support")
     parser.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support")
-    parser.add_argument("--with-sdcard", action="store_true",     help="Enable SDCard support")
+    parser.add_argument("--with-sdcard",     action="store_true", help="Enable SDCard support")
+    parser.add_argument("--with-sata",       action="store_true", help="Enable SATA support (over FMCRAID)")
     args = parser.parse_args()
 
-    soc = BaseSoC(with_ethernet=args.with_ethernet, **soc_sdram_argdict(args))
+    soc = BaseSoC(with_ethernet=args.with_ethernet, with_sata=args.with_sata, **soc_sdram_argdict(args))
     assert not (args.with_spi_sdcard and args.with_sdcard)
     if args.with_spi_sdcard:
         soc.add_spi_sdcard()