From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 5 Dec 2021 11:46:53 +0000 (+0000)
Subject: add I-Cache standard bus (not used yet)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=198212f8f0acd0cd39baeb779fa5ee5fdc80134a;p=soc.git

add I-Cache standard bus (not used yet)
---

diff --git a/src/soc/experiment/icache.py b/src/soc/experiment/icache.py
index 1b8aa858..b358b490 100644
--- a/src/soc/experiment/icache.py
+++ b/src/soc/experiment/icache.py
@@ -37,8 +37,9 @@ from soc.experiment.mem_types import (Fetch1ToICacheType,
 from soc.experiment.wb_types import (WB_ADDR_BITS, WB_DATA_BITS,
                                      WB_SEL_BITS, WBAddrType, WBDataType,
                                      WBSelType, WBMasterOut, WBSlaveOut,
-                                     WBMasterOutVector, WBSlaveOutVector,
-                                     WBIOMasterOut, WBIOSlaveOut)
+                                     )
+
+from nmigen_soc.wishbone.bus import Interface
 
 # for test
 from soc.bus.sram import SRAM
@@ -320,6 +321,14 @@ class ICache(Elaboratable):
         self.wb_out         = WBMasterOut(name="wb_out")
         self.wb_in          = WBSlaveOut(name="wb_in")
 
+        # standard naming (wired to non-standard for compatibility)
+        self.bus = Interface(addr_width=32,
+                            data_width=64,
+                            granularity=8,
+                            features={'stall'},
+                            alignment=0,
+                            name="dcache")
+
         self.log_out        = Signal(54)
 
 
@@ -975,6 +984,7 @@ if __name__ == '__main__':
     with open("test_icache.il", "w") as f:
         f.write(vl)
 
+    # set up memory every 32-bits with incrementing values 0 1 2 ...
     mem = []
     for i in range(512):
         mem.append((i*2) | ((i*2+1)<<32))