diff --git a/src/lib/fmap.c b/src/lib/fmap.c
index 77817d1..8901ff7 100644
--- a/src/lib/fmap.c
+++ b/src/lib/fmap.c
@@ -130,7 +130,8 @@
 	if (boot == NULL)
 		return -1;
 
-	fmap = rdev_mmap(boot, offset, FMAP_SIZE);
+	fmap = rdev_mmap(boot, offset,
+			 CONFIG(CBFS_VERIFICATION) ? FMAP_SIZE : sizeof(struct fmap));
 
 	if (fmap == NULL)
 		return -1;
diff --git a/src/soc/rockchip/rk3288/bootblock.c b/src/soc/rockchip/rk3288/bootblock.c
index 60ead64..a821ef1 100644
--- a/src/soc/rockchip/rk3288/bootblock.c
+++ b/src/soc/rockchip/rk3288/bootblock.c
@@ -8,6 +8,9 @@
 #include <soc/timer.h>
 #include <symbols.h>
 
+_Static_assert(!CONFIG(CBFS_VERIFICATION),
+	       "RK3288 doesn't have enough PRERAM_CBFS_CACHE to support the FMAP mapping needed for CBFS verification");
+
 void bootblock_soc_init(void)
 {
 	rkclk_init();