allwinner: Disable USE_COHERENT_MEM
According to the documentation, platforms may choose to trade memory
footprint for performance (and elegancy) by not providing a separately
mapped coherent page.
Since a debug build is getting close to the SRAM size limit already, this
allows us to save about 3.5KB of BSS and have some room for future
enhancements.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/common/allwinner-common.mk b/plat/allwinner/common/allwinner-common.mk
index 15888a8..8c772bf 100644
--- a/plat/allwinner/common/allwinner-common.mk
+++ b/plat/allwinner/common/allwinner-common.mk
@@ -52,3 +52,6 @@
# BL31 gets loaded alongside BL33 (U-Boot) by U-Boot's SPL
RESET_TO_BL31 := 1
+
+# We are short on memory, so save 3.5KB by not having an extra coherent page.
+USE_COHERENT_MEM := 0