diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c
new file mode 100644
index 0000000..f954b91
--- /dev/null
+++ b/src/cpu/intel/haswell/romstage.c
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 ChromeOS Authors
+ *
+ * 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
+ */
+
+#include <stdint.h>
+#include <cbmem.h>
+#include <console/console.h>
+
+/* Mainboard needs to supply this symbol. */
+extern void romstage_main(unsigned long bist);
+
+void main(unsigned long bist)
+{
+	int i;
+	const int num_guards = 4;
+	const u32 stack_guard = 0xdeadbeef;
+	u32 *stack_base = (void *)(CONFIG_DCACHE_RAM_BASE +
+	                           CONFIG_DCACHE_RAM_SIZE -
+	                           CONFIG_DCACHE_RAM_ROMSTAGE_STACK_SIZE);
+
+	printk(BIOS_DEBUG, "Setting up stack guards.\n");
+	for (i = 0; i < num_guards; i++)
+		stack_base[i] = stack_guard;
+
+	romstage_main(bist);
+
+	/* Check the stack. */
+	for (i = 0; i < num_guards; i++) {
+		if (stack_base[i] == stack_guard)
+			continue;
+		printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n");
+	}
+
+#if CONFIG_CONSOLE_CBMEM
+	/* Keep this the last thing this function does. */
+	cbmemc_reinit();
+#endif
+}