From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 24 Apr 2022 14:57:47 +0000 (+0100)
Subject: add block_ram tags as experiment to icache
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ac4dd92b9d287d1267e7908da77eb41760b1853c;p=microwatt.git

add block_ram tags as experiment to icache
---

diff --git a/icache.vhdl b/icache.vhdl
index a658783..0fad1a4 100644
--- a/icache.vhdl
+++ b/icache.vhdl
@@ -145,6 +145,8 @@ architecture rtl of icache is
 
     attribute ram_style : string;
     attribute ram_style of cache_tags : signal is "distributed";
+    attribute syn_ramstyle : string;
+    attribute syn_ramstyle of cache_tags : signal is "block_ram";
 
     -- L1 ITLB.
     constant TLB_BITS : natural := log2(TLB_SIZE);
@@ -163,6 +165,8 @@ architecture rtl of icache is
     signal itlb_ptes : tlb_ptes_t;
     attribute ram_style of itlb_tags : signal is "distributed";
     attribute ram_style of itlb_ptes : signal is "distributed";
+    attribute syn_ramstyle of itlb_tags : signal is "block_ram";
+    attribute syn_ramstyle of itlb_ptes : signal is "block_ram";
 
     -- Privilege bit from PTE EAA field
     signal eaa_priv  : std_ulogic;