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-rw-r--r--src/vendorcode/google/chromeos/fmap.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vendorcode/google/chromeos/fmap.c b/src/vendorcode/google/chromeos/fmap.c
index a8425c0d10..7c1f626f82 100644
--- a/src/vendorcode/google/chromeos/fmap.c
+++ b/src/vendorcode/google/chromeos/fmap.c
@@ -51,7 +51,8 @@ const struct fmap *fmap_find(void)
media->close(media);
#endif
- if (memcmp(fmap, FMAP_SIGNATURE, sizeof(FMAP_SIGNATURE)-1)) {
+ if (fmap == CBFS_MEDIA_INVALID_MAP_ADDRESS ||
+ memcmp(fmap, FMAP_SIGNATURE, sizeof(FMAP_SIGNATURE) - 1)) {
printk(BIOS_DEBUG, "No FMAP found at %p.\n", fmap);
return NULL;
}