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diff --git a/src/vendorcode/google/chromeos/memlayout.h b/src/vendorcode/google/chromeos/memlayout.h
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 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
+ */
+
+/* This file contains macro definitions for memlayout.ld linker scripts. */
+
+#ifndef __CHROMEOS_MEMLAYOUT_H
+#define __CHROMEOS_MEMLAYOUT_H
+
+/* Careful: required work buffer size depends on RW properties such as key size
+ * and algorithm -- what works for you might stop working after an update. Do
+ * NOT lower the asserted minimum without consulting vboot devs (rspangler)! */
+#define VBOOT2_WORK(addr, size) \
+ REGION(vboot2_work, addr, size, 8) \
+ _ = ASSERT(size >= 12K, "vboot2 work buffer must be at least 12K!");
+
+#ifdef __VERSTAGE__
+ #define VERSTAGE(addr, sz) \
+ SET_COUNTER(VERSTAGE, addr) \
+ _ = ASSERT(_everstage - _verstage <= sz, \
+ STR(Verstage exceeded its allotted size! (sz))); \
+ INCLUDE "vendorcode/google/chromeos/vboot2/verstage.verstage.ld"
+#else
+ #define VERSTAGE(addr, sz) \
+ SET_COUNTER(VERSTAGE, addr) \
+ . += sz;
+#endif
+
+#ifdef __VERSTAGE__
+ #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) VERSTAGE(addr, size)
+#else
+ #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size)
+#endif
+
+#endif /* __CHROMEOS_MEMLAYOUT_H */