x86: Add basic cache operations

At present most x86 cache operations are undefined. Add a basic
implementation for these.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index 6a23974ff..1a2f85c1f 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -228,3 +228,26 @@ void flush_dcache_range(unsigned long start, unsigned long stop)
 void invalidate_dcache_range(unsigned long start, unsigned long stop)
 {
 }
+
+void dcache_enable(void)
+{
+	enable_caches();
+}
+
+void dcache_disable(void)
+{
+	disable_caches();
+}
+
+void icache_enable(void)
+{
+}
+
+void icache_disable(void)
+{
+}
+
+int icache_status(void)
+{
+	return 1;
+}