allwinner: H616: Add reserved-memory node to DT
When the BL31 for the Allwinner H616 runs in DRAM, we need to make sure
we tell the non-secure world about the memory region it uses.
Add a reserved-memory node to the DT, which covers the area that BL31
could occupy. The "no-map" property will prevent OSes from mapping
the area, so there would be no speculative accesses.
Change-Id: I808f3e1a8089da53bbe4fc6435a808e9159831e1
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/common/include/sunxi_private.h b/plat/allwinner/common/include/sunxi_private.h
index b68d23f..6cf4670 100644
--- a/plat/allwinner/common/include/sunxi_private.h
+++ b/plat/allwinner/common/include/sunxi_private.h
@@ -41,4 +41,12 @@
int sunxi_init_platform_r_twi(uint16_t socid, bool use_rsb);
void sunxi_execute_arisc_code(uint32_t *code, size_t size, uint16_t param);
+#ifdef SUNXI_BL31_IN_DRAM
+void sunxi_prepare_dtb(void *fdt);
+#else
+static inline void sunxi_prepare_dtb(void *fdt)
+{
+}
+#endif
+
#endif /* SUNXI_PRIVATE_H */