From d5f172feedbda9ec8fe0f098483ba5a89eb3e2d4 Mon Sep 17 00:00:00 2001
From: gatecat <gatecat@ds0.me>
Date: Fri, 23 Jan 2026 09:44:03 +0100
Subject: [PATCH] nexus: Support for CONFIG_LMMI and CONFIG_CLKRST_CORE

Signed-off-by: gatecat <gatecat@ds0.me>
---
 nexus/constids.inc |  7 +++++++
 nexus/fasm.cc      | 23 +++++++++++++++++++++++
 nexus/pack.cc      |  2 +-
 nexus/pins.cc      | 13 +++++++++++++
 4 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/nexus/constids.inc b/nexus/constids.inc
index 87224179..380d2112 100644
--- a/nexus/constids.inc
+++ b/nexus/constids.inc
@@ -553,6 +553,13 @@ X(CONFIG_MULTIBOOT_CORE)
 X(CIBAUTOREBOOT)
 X(MSPIADDR)
 
+X(CONFIG_LMMI)
+X(CONFIG_LMMI_CORE)
+X(SMCLK)
+X(RSTSMCLK)
+
+X(CONFIG_CLKRST_CORE)
+
 X(BEL_TYPE)
 X(BEL_Z)
 X(CEOUTMUX)
diff --git a/nexus/fasm.cc b/nexus/fasm.cc
index 9e0fd2ee..02813aa9 100644
--- a/nexus/fasm.cc
+++ b/nexus/fasm.cc
@@ -540,6 +540,25 @@ struct NexusFasmWriter
                          ctx->parse_lattice_param_from_cell(cell, id_MSPIADDR, 32, 0).intval, 32);
         pop();
     }
+    // Write config for an CONFIG_LMMI_CORE cell
+    void write_lmmi(const CellInfo *cell)
+    {
+        BelId bel = cell->bel;
+        push_bel(bel);
+        write_enum(cell, "LMMI_EN", "DIS");
+        pop();
+    }
+    // Write config for an CONFIG_CLKRST_CORE cell
+    void write_cfg_clkrst(const CellInfo *cell)
+    {
+        BelId bel = cell->bel;
+        push_bel(bel);
+        write_enum(cell, "MCJTAGGSRNDIS", "EN");
+        write_enum(cell, "MCLMMIGSRNDIS", "EN");
+        write_enum(cell, "MCSEDCGSRNDIS", "EN");
+        write_enum(cell, "MCWDTGSRNDIS", "EN");
+        pop();
+    }
     // Write config for DCC
     void write_dcc(const CellInfo *cell)
     {
@@ -1107,6 +1126,10 @@ struct NexusFasmWriter
                 write_dcs(ci);
             else if (ci->type == id_CONFIG_MULTIBOOT_CORE)
                 write_multiboot(ci);
+            else if (ci->type == id_CONFIG_LMMI_CORE)
+                write_lmmi(ci);
+            else if (ci->type == id_CONFIG_CLKRST_CORE)
+                write_cfg_clkrst(ci);
             blank();
         }
         // Handle DCC route-throughs
diff --git a/nexus/pack.cc b/nexus/pack.cc
index 7e1e6f7f..58999965 100644
--- a/nexus/pack.cc
+++ b/nexus/pack.cc
@@ -1081,7 +1081,7 @@ struct NexusPacker
                 {id_PDPSC16K, id_PDPSC16K_MODE}, {id_SP16K, id_SP16K_MODE},       {id_FIFO16K, id_FIFO16K_MODE},
                 {id_SP512K, id_SP512K_MODE},     {id_DPSC512K, id_DPSC512K_MODE}, {id_PDPSC512K, id_PDPSC512K_MODE},
                 {id_PLL, id_PLL_CORE},           {id_DPHY, id_DPHY_CORE},
-                {id_MULTIBOOT, id_CONFIG_MULTIBOOT_CORE},
+                {id_MULTIBOOT, id_CONFIG_MULTIBOOT_CORE}, {id_CONFIG_LMMI, id_CONFIG_LMMI_CORE},
         };
 
         // extra prefix needed for this primitive for some reason
diff --git a/nexus/pins.cc b/nexus/pins.cc
index 97652c8e..bc518cbd 100644
--- a/nexus/pins.cc
+++ b/nexus/pins.cc
@@ -245,6 +245,19 @@ static const dict<IdString, Arch::CellPinsData> base_cell_pin_data = {
          {
                  {{}, PINSTYLE_CIB},
         }},
+        {id_CONFIG_LMMI_CORE,
+         {
+                 {id_LMMICLK, PINSTYLE_DEDI},
+                 {id_LMMIRESETN, PINSTYLE_DEDI},
+                 {id_RSTSMCLK, PINSTYLE_DEDI},
+                 {id_SMCLK, PINSTYLE_DEDI},
+                 {{}, PINSTYLE_CIB},
+        }},
+        {id_CONFIG_CLKRST_CORE,
+         {
+                {{}, PINSTYLE_DEDI},
+        }},
+
 };
 } // namespace