allwinner: Adjust memory mapping to fit into 256MB
At the moment we map as much of the DRAM into EL3 as possible, however
we actually don't use it. The only exception is the secure DRAM for
BL32 (if that is configured).
To decrease the memory footprint of ATF, we save on some page tables by
reducing the memory mapping to the actually required regions: SRAM, device
MMIO, secure DRAM and U-Boot (to be used later).
This introduces a non-identity mapping for the DRAM regions.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
index f2d5aed..901e536 100644
--- a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
+++ b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
@@ -21,7 +21,7 @@
#define SUNXI_DEV_BASE 0x01000000
#define SUNXI_DEV_SIZE 0x09000000
#define SUNXI_DRAM_BASE 0x40000000
-#define SUNXI_DRAM_SIZE 0xc0000000
+#define SUNXI_DRAM_VIRT_BASE 0x0a000000
/* Memory-mapped devices */
#define SUNXI_SYSCON_BASE 0x03000000