From 290b0f22c9a6108d0cfdadf6ca76c2bef06b81bb Mon Sep 17 00:00:00 2001
From: Philipp van Kempen <philipp.van-kempen@tum.de>
Date: Thu, 14 Jul 2022 15:57:15 +0200
Subject: [PATCH] etiss_pulpino: write ini options for mstatus_fs, mstatus_vs,
 vlen and elen (unimplemented)

---
 mlonmcu/target/etiss_pulpino.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/mlonmcu/target/etiss_pulpino.py b/mlonmcu/target/etiss_pulpino.py
index 39ac7b57b..25416c6ca 100644
--- a/mlonmcu/target/etiss_pulpino.py
+++ b/mlonmcu/target/etiss_pulpino.py
@@ -53,8 +53,11 @@ class EtissPulpinoTarget(RISCVTarget):
         "etissvp.ram_start": 0x800000,
         "etissvp.ram_size": 0x4000000,  # 64 MB
         "etissvp.cycle_time_ps": 31250,  # 32 MHz
+        "enable_fpu": True,  # WIP
         "enable_vext": False,
         "enable_pext": False,
+        "vlen": 0,  # vectorization=off
+        "elen": 32,
         "jit": None,
     }
     REQUIRED = RISCVTarget.REQUIRED + ["etiss.src_dir", "etiss.install_dir", "etissvp.script"]
@@ -132,6 +135,10 @@ def cpu_arch(self):
         else:
             return "RV32IMACFD"
 
+    @property
+    def enable_fpu(self):
+        return bool(self.config["enable_fpu"])
+
     @property
     def enable_vext(self):
         return bool(self.config["enable_vext"])
@@ -140,6 +147,14 @@ def enable_vext(self):
     def enable_pext(self):
         return bool(self.config["enable_pext"])
 
+    @property
+    def vlen(self):
+        return int(self.config["vlen"])
+
+    @property
+    def elen(self):
+        return int(self.config["elen"])
+
     @property
     def jit(self):
         return self.config["jit"]
@@ -175,6 +190,16 @@ def write_ini(self, path):
             f.write(f"simple_mem_system.memseg_length_01={hex(self.ram_size)}\n")
             f.write("\n")
             f.write(f"arch.cpu_cycle_time_ps={self.cycle_time_ps}\n")
+            if self.enable_fpu:
+                # TODO: do not hardcode cpu_arch
+                # TODO: i.e. use cpu_arch_lower
+                f.write(f"arch.rv32imacfdpv.mstatus_fs=1")
+            if self.enable_vext:
+                f.write(f"arch.rv32imacfdpv.mstatus_vs=1")
+                if self.vlen > 0:
+                    f.write(f"arch.rv32imacfdpv.vlen={self.vlen}")
+                # if self.elen > 0:
+                #     f.write(f"arch.rv32imacfdpv.elen={self.elen}")
 
             if self.gdbserver_enable:
                 f.write("[Plugin gdbserver]\n")