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diff --git a/stand/mips/beri/common/cfi.c b/stand/mips/beri/common/cfi.c
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+/*-
+ * Copyright (c) 2013 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "util.h"
+#include "mips.h"
+#include "cfi.h"
+
+/*
+ * Memory-mapped Intel StrataFlash mini-driver. Very mini. Nothing fancy --
+ * and few seatbelts.
+ *
+ * XXXRW: Should we be making some effort to reset isf to a known-good state
+ * before starting, in case there was a soft reset mid-transaction.
+ *
+ * XXXRW: Would be nice to support multiple devices and also handle SD cards
+ * here ... and probably not too hard.
+ */
+extern void *__cheri_flash_bootfs_vaddr__;
+extern void *__cheri_flash_bootfs_len__;
+
+#define CHERI_BOOTFS_BASE ((uintptr_t)&__cheri_flash_bootfs_vaddr__)
+#define CHERI_BOOTFS_LENGTH ((uintptr_t)&__cheri_flash_bootfs_len__)
+
+int
+cfi_read(void *buf, unsigned lba, unsigned nblk)
+{
+
+ if ((lba << 9) + (nblk << 9) > CHERI_BOOTFS_LENGTH)
+ return (-1);
+ memcpy(buf, (void *)(CHERI_BOOTFS_BASE + (lba << 9)), nblk << 9);
+ return (0);
+}
+
+uint64_t
+cfi_get_mediasize(void)
+{
+
+ return (CHERI_BOOTFS_LENGTH);
+}
+
+uint64_t
+cfi_get_sectorsize(void)
+{
+
+ return (512); /* Always a good sector size. */
+}