diff --git a/tools/sbl_uni.py b/tools/sbl_uni.py
index ecab1b6..3926f92 100644
--- a/tools/sbl_uni.py
+++ b/tools/sbl_uni.py
@@ -32,6 +32,8 @@ RAMS = [
     (0x08600000, 0x00010000),   # IMEM
     (0x80000000, 0x07C00000),   # DDRHIGH_A
     (0x87C00000, 0x00800000),   # SMEM(+SBL BSS)
+    (0x07800000, 0x000AF000),   # leak-sink HI (S12 frame march;
+    (0x078B0000, 0x00750000),   #  gap minus UARTDM page, HW-rsvd)
     (0x078AF000, 0x00001000),   # UARTDM page
     (0x13000000, 0x00002000),   # UEFI tables (already above, keep)
 ]