Virtual File System module load and unload

Change-Id: Iaa6a256a8a15ac48bfba5bc1cab292c5ac246166
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/253
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/lib/syscall_mm.C b/src/lib/syscall_mm.C
index 187cdced2..ba527073f 100644
--- a/src/lib/syscall_mm.C
+++ b/src/lib/syscall_mm.C
@@ -1,5 +1,6 @@
 #include <sys/syscall.h>
 #include <sys/mm.h>
+#include <arch/ppc.H>
 
 using namespace Systemcalls;
 
@@ -10,3 +11,34 @@ int mm_alloc_block(msg_q_t mq,void* va,uint64_t size)
 {
     return (int64_t)_syscall3(MM_ALLOC_BLOCK, mq, va, (void*)size);
 }
+
+
+/*
+ * Call to flush out the instruction cache
+ * From the PowerPC ISA book II, section 1.8 
+ *     Instruction Storage
+ */
+void mm_icache_invalidate(void * i_addr, size_t i_cpu_word_count)
+{
+    // Make sure 8 byte boundary
+    uint64_t addr = (uint64_t)i_addr  & ~0x7ull;
+    uint64_t * dest = (uint64_t*)addr;
+
+    for(size_t i = 0; i < i_cpu_word_count; ++i)
+    {
+        dcbst(dest);
+        ++dest;
+    }
+
+    lwsync();
+
+    dest = (uint64_t*)addr;
+    for(size_t i = 0; i < i_cpu_word_count; ++i)
+    {
+        icbi(dest);
+        ++dest;
+    }
+
+    isync();
+}
+