From 2f4a3aaf057b21a830112461d77bd4717ac41737 Mon Sep 17 00:00:00 2001
From: Paul Selkirk <paul@psgd.org>
Date: Tue, 17 May 2016 17:47:03 +0200
Subject: add the new mkmif core

---
 config/config.cfg | 10 ++++++++++
 config/config.py  | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 66 insertions(+), 3 deletions(-)

diff --git a/config/config.cfg b/config/config.cfg
index 337ebe5..d3834d6 100644
--- a/config/config.cfg
+++ b/config/config.cfg
@@ -44,6 +44,9 @@ cores = modexps6
 [rsa]
 cores = sha256 aes trng modexps6
 
+[mkmif]
+cores = mkmif
+
 # include multiple of the same core
 [multi-test]
 cores = sha256 aes aes chacha aes
@@ -128,3 +131,10 @@ vfiles =
 	math/modexp/src/rtl/residue.v
 	math/modexp/src/rtl/shl.v
 	math/modexp/src/rtl/shr.v
+
+[mkmif]
+error_wire = no
+vfiles =
+	util/mkmif/src/rtl/mkmif.v
+	util/mkmif/src/rtl/mkmif_core.v
+	util/mkmif/src/rtl/mkmif_spi.v
diff --git a/config/config.py b/config/config.py
index acd75a1..5ff3ccc 100755
--- a/config/config.py
+++ b/config/config.py
@@ -103,7 +103,8 @@ def main():
         args.verilog.write(createModule_template.format(
             addrs = "".join(core.createAddr()     for core in cores),
             insts = "".join(core.createInstance() for core in cores),
-            muxes = "".join(core.createMux()      for core in cores)))
+            muxes = "".join(core.createMux()      for core in cores),
+            ports = "".join(core.createPort()     for core in cores) ))
 
         args.makefile.write(listVfiles_template.format(
             vfiles = "".join(core.listVfiles()    for core in cores)))
@@ -224,6 +225,9 @@ class Core(object):
     def createMux(self):
         return createMux_template.format(core = self, core0 = self)
 
+    def createPort(self):
+        return ""
+
     def listVfiles(self):
         return "".join(" \\\n\t$(CORE_TREE)/" + vfile for vfile in self.vfiles)
 
@@ -302,12 +306,29 @@ class ModExpS6Core(Core):
     def createMux(self):
         return createMux_modexps6_template.format(core = self, core0 = self)
 
+class MkmifCore(Core):
+    """
+    MKM interface core has extra ports for the SPI signal lines.
+    """
+
+    def createPort(self):
+        return """ \
+
+   output wire         mkm_sclk,
+   output wire         mkm_cs_n,
+   input wire          mkm_do,
+   output wire         mkm_di,
+        """
+
+    def createInstance(self):
+        return createInstance_template_MKMIF.format(core = self)
 
 # Hook special classes in as handlers for the cores that require them.
 
 Core.special_class.update(
     trng        = TRNGCore,
-    modexps6    = ModExpS6Core)
+    modexps6    = ModExpS6Core,
+    mkmif       = MkmifCore)
 
 
 # Templates (format strings), here instead of inline in the functions
@@ -409,6 +430,38 @@ createInstance_template_TRNG = """\
 
 """
 
+# Template used by Mkmif.createInstance().  This is different
+# enough from the base template that it's easier to make this separate.
+
+createInstance_template_MKMIF = """\
+   //----------------------------------------------------------------
+   // {core.upper_instance_name}
+   //----------------------------------------------------------------
+   wire                 enable_{core.instance_name} = (addr_core_num == CORE_ADDR_{core.upper_instance_name});
+   wire [31: 0]         read_data_{core.instance_name};
+
+   {core.name} {core.instance_name}_inst
+     (
+      .clk(sys_clk),
+      {core.reset_pin},
+
+      .spi_sclk(mkm_sclk),
+      .spi_cs_n(mkm_cs_n),
+      .spi_do(mkm_do),
+      .spi_di(mkm_di),
+
+      .cs(enable_{core.instance_name} & (sys_eim_rd | sys_eim_wr)),
+      .we(sys_eim_wr),
+
+      .address(addr_core_reg),
+      .write_data(sys_write_data),
+      .read_data(read_data_{core.instance_name}){core.error_port}
+      );
+
+{core.one_cycle_delay}
+
+"""
+
 # Template for one-cycle delay code.
 
 one_cycle_delay_template = """\
@@ -457,7 +510,7 @@ module core_selector
    output wire [31: 0] sys_read_data,
    input wire [31: 0]  sys_write_data,
    output wire         sys_error,
-
+{ports}
    input wire          noise,
    output wire [7 : 0] debug
    );
-- 
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