baytrail: Move MRC cache code to a common directory

This common code can be shared across Intel SOCs.

Change-Id: Id9ec4ccd3fc81cbab19a7d7e13bfa3975d9802d0
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/196263
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit f9919e2551b02056b83918d2e7b515b25541c583)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6967
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/soc/intel/common/nvm.h b/src/soc/intel/common/nvm.h
new file mode 100644
index 0000000000..d332d831f7
--- /dev/null
+++ b/src/soc/intel/common/nvm.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _COMMON_NVM_H_
+#define _COMMON_NVM_H_
+
+#include <stddef.h>
+
+/* Determine if area is erased. returns 1 if erased. 0 otherwise. */
+int nvm_is_erased(const void *start, size_t size);
+
+/* Erase region according to start and size. Returns < 0 on error else 0. */
+int nvm_erase(void *start, size_t size);
+
+/* Write data to NVM. Returns 0 on success < 0 on error.  */
+int nvm_write(void *start, const void *data, size_t size);
+
+#endif /* _COMMON_NVM_H_ */