From: Joel Stanley <joel@jms.id.au>
Date: Wed, 10 Jun 2020 01:09:16 +0000 (+0930)
Subject: microwatt: Add icache flush
X-Git-Tag: 24jan2021_ls180~191^2~2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=68d2aa45fa90d3f3809e762ae575411d626bef1d;p=litex.git

microwatt: Add icache flush
---

diff --git a/litex/soc/cores/cpu/microwatt/system.h b/litex/soc/cores/cpu/microwatt/system.h
index 941dc564..c8c4e41c 100644
--- a/litex/soc/cores/cpu/microwatt/system.h
+++ b/litex/soc/cores/cpu/microwatt/system.h
@@ -5,8 +5,11 @@
 extern "C" {
 #endif
 
-__attribute__((unused)) static void flush_cpu_icache(void){}; /* FIXME: do something useful here! */
-__attribute__((unused)) static void flush_cpu_dcache(void){}; /* FIXME: do something useful here! */
+static inline void flush_cpu_icache(void)
+{
+	__asm__ volatile ("icbi 0,0; isync" : : : "memory");
+}
+static inline void flush_cpu_dcache(void){}; /* FIXME: do something useful here! */
 void flush_l2_cache(void);
 
 void busy_wait(unsigned int ms);