target: add rst signal to CRG to allow full reset of the SoC on reboo…

…t command.
litex-hub · Nov 4, 2020 · 2b17dc1 · 2b17dc1
1 parent aa6b9ca
commit 2b17dc1
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Showing 49 changed files with 109 additions and 43 deletions.
diff --git a/litex_boards/targets/ac701.py b/litex_boards/targets/ac701.py
@@ -32,15 +32,16 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys       = ClockDomain()
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
-        self.clock_domains.cd_clk200    = ClockDomain()
+        self.clock_domains.cd_idelay    = ClockDomain()
 
         # # #
 
         self.submodules.pll = pll = S7PLL(speedgrade=-1)
-        self.comb += pll.reset.eq(platform.request("cpu_reset"))
+        self.comb += pll.reset.eq(platform.request("cpu_reset") | self.rst)
         pll.register_clkin(platform.request("clk200"), 200e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,     4*sys_clk_freq)

diff --git a/litex_boards/targets/acorn_cle_215.py b/litex_boards/targets/acorn_cle_215.py
@@ -52,6 +52,7 @@
 
 class CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys       = ClockDomain()
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
@@ -62,6 +63,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = S7PLL()
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk200, 200e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,     4*sys_clk_freq)

diff --git a/litex_boards/targets/aller.py b/litex_boards/targets/aller.py
@@ -36,6 +36,7 @@
 
 class CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys       = ClockDomain()
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
@@ -46,6 +47,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = S7PLL()
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk100, 100e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,     4*sys_clk_freq)

diff --git a/litex_boards/targets/alveo_u250.py b/litex_boards/targets/alveo_u250.py
@@ -33,6 +33,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys4x  = ClockDomain(reset_less=True)
         self.clock_domains.cd_pll4x  = ClockDomain(reset_less=True)
@@ -41,7 +42,7 @@ def __init__(self, platform, sys_clk_freq):
         # # #
 
         self.submodules.pll = pll = USMMCM(speedgrade=-2)
-        self.comb += pll.reset.eq(0) # FIXME
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(platform.request("clk300", 0), 300e6)
         pll.create_clkout(self.cd_pll4x, sys_clk_freq*4, buf=None, with_reset=False)
         pll.create_clkout(self.cd_idelay, 500e6, with_reset=False)

diff --git a/litex_boards/targets/arty.py b/litex_boards/targets/arty.py
@@ -29,6 +29,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys       = ClockDomain()
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
@@ -38,7 +39,7 @@ def __init__(self, platform, sys_clk_freq):
         # # #
 
         self.submodules.pll = pll = S7PLL(speedgrade=-1)
-        self.comb += pll.reset.eq(~platform.request("cpu_reset"))
+        self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst)
         pll.register_clkin(platform.request("clk100"), 100e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,     4*sys_clk_freq)

diff --git a/litex_boards/targets/arty_s7.py b/litex_boards/targets/arty_s7.py
@@ -28,6 +28,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys       = ClockDomain()
         self.clock_domains.cd_sys2x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
@@ -37,7 +38,7 @@ def __init__(self, platform, sys_clk_freq):
         # # #
 
         self.submodules.pll = pll = S7PLL(speedgrade=-1)
-        self.comb += pll.reset.eq(~platform.request("cpu_reset"))
+        self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst)
         pll.register_clkin(platform.request("clk100"), 100e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
         pll.create_clkout(self.cd_sys2x,     2*sys_clk_freq)
@@ -67,8 +68,7 @@ def __init__(self, sys_clk_freq=int(100e6), **kwargs):
             self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
                 memtype        = "DDR3",
                 nphases        = 4,
-                sys_clk_freq   = sys_clk_freq,
-                interface_type = "MEMORY")
+                sys_clk_freq   = sys_clk_freq)
             self.add_csr("ddrphy")
             self.add_sdram("sdram",
                 phy                     = self.ddrphy,

diff --git a/litex_boards/targets/c10lprefkit.py b/litex_boards/targets/c10lprefkit.py
@@ -32,6 +32,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
 
@@ -42,7 +43,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = Cyclone10LPPLL(speedgrade="-A7")
-        self.comb += pll.reset.eq(~platform.request("cpu_reset"))
+        self.comb += pll.reset.eq(~platform.request("cpu_reset") | self.rst)
         pll.register_clkin(clk12, 12e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)

diff --git a/litex_boards/targets/camlink_4k.py b/litex_boards/targets/camlink_4k.py
@@ -29,6 +29,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_init    = ClockDomain()
         self.clock_domains.cd_por     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys     = ClockDomain()
@@ -51,7 +52,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # pll
         self.submodules.pll = pll = ECP5PLL()
-        self.comb += pll.reset.eq(~por_done)
+        self.comb += pll.reset.eq(~por_done | self.rst)
         pll.register_clkin(clk27, 27e6)
         pll.create_clkout(self.cd_sys2x_i, 2*sys_clk_freq)
         pll.create_clkout(self.cd_init, 27e6)

diff --git a/litex_boards/targets/colorlight_5a_75x.py b/litex_boards/targets/colorlight_5a_75x.py
@@ -66,6 +66,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq, use_internal_osc=False, with_usb_pll=False, with_rst=True, sdram_rate="1:1"):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         if sdram_rate == "1:2":
             self.clock_domains.cd_sys2x    = ClockDomain()
@@ -91,7 +92,7 @@ def __init__(self, platform, sys_clk_freq, use_internal_osc=False, with_usb_pll=
 
         # PLL
         self.submodules.pll = pll = ECP5PLL()
-        self.comb += pll.reset.eq(~rst_n)
+        self.comb += pll.reset.eq(~rst_n | self.rst)
         pll.register_clkin(clk, clk_freq)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         if sdram_rate == "1:2":
@@ -103,7 +104,7 @@ def __init__(self, platform, sys_clk_freq, use_internal_osc=False, with_usb_pll=
         # USB PLL
         if with_usb_pll:
             self.submodules.usb_pll = usb_pll = ECP5PLL()
-            self.comb += usb_pll.reset.eq(~rst_n)
+            self.comb += usb_pll.reset.eq(~rst_n | self.rst)
             usb_pll.register_clkin(clk, clk_freq)
             self.clock_domains.cd_usb_12 = ClockDomain()
             self.clock_domains.cd_usb_48 = ClockDomain()

diff --git a/litex_boards/targets/crosslink_nx_evn.py b/litex_boards/targets/crosslink_nx_evn.py
@@ -33,6 +33,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys = ClockDomain()
         self.clock_domains.cd_por = ClockDomain()
 
@@ -49,7 +50,7 @@ def __init__(self, platform, sys_clk_freq):
         self.comb += self.cd_por.clk.eq(self.cd_sys.clk)
         self.sync.por += If(por_counter != 0, por_counter.eq(por_counter - 1))
         self.specials += AsyncResetSynchronizer(self.cd_por, ~rst_n)
-        self.specials += AsyncResetSynchronizer(self.cd_sys, (por_counter != 0))
+        self.specials += AsyncResetSynchronizer(self.cd_sys, (por_counter != 0) | self.rst)
 
 
 # BaseSoC ------------------------------------------------------------------------------------------

diff --git a/litex_boards/targets/crosslink_nx_vip.py b/litex_boards/targets/crosslink_nx_vip.py
@@ -39,6 +39,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys = ClockDomain()
         self.clock_domains.cd_por = ClockDomain()
 
@@ -55,7 +56,7 @@ def __init__(self, platform, sys_clk_freq):
         self.comb += self.cd_por.clk.eq(self.cd_sys.clk)
         self.sync.por += If(por_counter != 0, por_counter.eq(por_counter - 1))
         self.specials += AsyncResetSynchronizer(self.cd_por, ~rst_n)
-        self.specials += AsyncResetSynchronizer(self.cd_sys, (por_counter != 0))
+        self.specials += AsyncResetSynchronizer(self.cd_sys, (por_counter != 0) | self.rst)
 
 
 # BaseSoC ------------------------------------------------------------------------------------------

diff --git a/litex_boards/targets/de0nano.py b/litex_boards/targets/de0nano.py
@@ -29,6 +29,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq, sdram_rate="1:1"):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         if sdram_rate == "1:2":
             self.clock_domains.cd_sys2x    = ClockDomain()
@@ -43,6 +44,7 @@ def __init__(self, platform, sys_clk_freq, sdram_rate="1:1"):
 
         # PLL
         self.submodules.pll = pll = CycloneIVPLL(speedgrade="-6")
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk50, 50e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         if sdram_rate == "1:2":

diff --git a/litex_boards/targets/de10lite.py b/litex_boards/targets/de10lite.py
@@ -32,6 +32,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
         self.clock_domains.cd_vga    = ClockDomain(reset_less=True)
@@ -43,6 +44,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = Max10PLL(speedgrade="-7")
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk50, 50e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)

diff --git a/litex_boards/targets/de10nano.py b/litex_boards/targets/de10nano.py
@@ -32,6 +32,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq, with_sdram=False, sdram_rate="1:1"):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         if sdram_rate == "1:2":
             self.clock_domains.cd_sys2x    = ClockDomain()
@@ -47,6 +48,7 @@ def __init__(self, platform, sys_clk_freq, with_sdram=False, sdram_rate="1:1"):
 
         # PLL
         self.submodules.pll = pll = CycloneVPLL(speedgrade="-I7")
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk50, 50e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         if sdram_rate == "1:2":

diff --git a/litex_boards/targets/de1soc.py b/litex_boards/targets/de1soc.py
@@ -28,6 +28,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
 
@@ -38,6 +39,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = CycloneVPLL(speedgrade="-C6")
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk50, 50e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)

diff --git a/litex_boards/targets/de2_115.py b/litex_boards/targets/de2_115.py
@@ -28,6 +28,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
 
@@ -38,6 +39,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = CycloneIVPLL(speedgrade="-7")
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk50, 50e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)

diff --git a/litex_boards/targets/ecp5_evn.py b/litex_boards/targets/ecp5_evn.py
@@ -23,6 +23,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq, x5_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys = ClockDomain()
 
         # # #
@@ -37,7 +38,7 @@ def __init__(self, platform, sys_clk_freq, x5_clk_freq):
 
         # pll
         self.submodules.pll = pll = ECP5PLL()
-        self.comb += pll.reset.eq(~rst_n)
+        self.comb += pll.reset.eq(~rst_n | self.rst)
         pll.register_clkin(clk, x5_clk_freq or 12e6)
         pll.create_clkout(self.cd_sys, sys_clk_freq)
 

diff --git a/litex_boards/targets/ecpix5.py b/litex_boards/targets/ecpix5.py
@@ -30,6 +30,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_init    = ClockDomain()
         self.clock_domains.cd_por     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys     = ClockDomain()
@@ -54,7 +55,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = ECP5PLL()
-        self.comb += pll.reset.eq(~por_done | ~rst_n)
+        self.comb += pll.reset.eq(~por_done | ~rst_n | self.rst)
         pll.register_clkin(clk100, 100e6)
         pll.create_clkout(self.cd_sys2x_i, 2*sys_clk_freq)
         pll.create_clkout(self.cd_init, 25e6)
@@ -69,8 +70,8 @@ def __init__(self, platform, sys_clk_freq):
                 i_CLKI    = self.cd_sys2x.clk,
                 i_RST     = self.reset,
                 o_CDIVX   = self.cd_sys.clk),
-            AsyncResetSynchronizer(self.cd_sys,   ~pll.locked | self.reset),
-            AsyncResetSynchronizer(self.cd_sys2x, ~pll.locked | self.reset),
+            AsyncResetSynchronizer(self.cd_sys,   ~pll.locked | self.reset | self.rst),
+            AsyncResetSynchronizer(self.cd_sys2x, ~pll.locked | self.reset | self.rst),
         ]
 
 # BaseSoC ------------------------------------------------------------------------------------------

diff --git a/litex_boards/targets/fk33.py b/litex_boards/targets/fk33.py
@@ -29,11 +29,13 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
 
         # # #
 
         self.submodules.pll = pll = USPMMCM(speedgrade=-2)
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(platform.request("clk200"), 200e6)
         pll.create_clkout(self.cd_sys, sys_clk_freq)
 

diff --git a/litex_boards/targets/fomu.py b/litex_boards/targets/fomu.py
@@ -33,6 +33,7 @@
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
         assert sys_clk_freq == 12e6
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_por    = ClockDomain(reset_less=True)
         self.clock_domains.cd_usb_12 = ClockDomain()
@@ -53,6 +54,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # USB PLL
         self.submodules.pll = pll = iCE40PLL()
+        self.comb += pll.reset.eq(self.rst)
         pll.clko_freq_range = ( 12e6,  275e9) # FIXME: improve iCE40PLL to avoid lowering clko_freq_min.
         pll.register_clkin(clk48, 48e6)
         pll.create_clkout(self.cd_usb_12, 12e6, with_reset=False)

diff --git a/litex_boards/targets/genesys2.py b/litex_boards/targets/genesys2.py
@@ -28,14 +28,15 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys4x  = ClockDomain(reset_less=True)
         self.clock_domains.cd_idelay = ClockDomain()
 
         # # #
 
         self.submodules.pll = pll = S7MMCM(speedgrade=-2)
-        self.comb += pll.reset.eq(~platform.request("cpu_reset_n"))
+        self.comb += pll.reset.eq(~platform.request("cpu_reset_n") | self.rst)
         pll.register_clkin(platform.request("clk200"), 200e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,  4*sys_clk_freq)

diff --git a/litex_boards/targets/hadbadge.py b/litex_boards/targets/hadbadge.py
@@ -35,6 +35,7 @@
 
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
+        self.rst = Signal()
         self.clock_domains.cd_sys    = ClockDomain()
         self.clock_domains.cd_sys_ps = ClockDomain(reset_less=True)
 
@@ -45,6 +46,7 @@ def __init__(self, platform, sys_clk_freq):
 
         # PLL
         self.submodules.pll = pll = ECP5PLL()
+        self.comb += pll.reset.eq(self.rst)
         pll.register_clkin(clk8, 8e6)
         pll.create_clkout(self.cd_sys,    sys_clk_freq)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=90)