uniphier: support read-only xlat tables
BL2 for this platform uses mmap_add_dynamic_region(), but BL31 and
BL32 (TSP) only use static mapping. So, BL31 and BL32 can make the
tables read-only after enabling MMU.
Enable ALLOW_RO_XLAT_TABLES by default.
Change-Id: Ib59c44697163629119888bb6abd47fa144f09ba3
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/plat/socionext/uniphier/uniphier_xlat_setup.c b/plat/socionext/uniphier/uniphier_xlat_setup.c
index c2ac7a2..5043f4b 100644
--- a/plat/socionext/uniphier/uniphier_xlat_setup.c
+++ b/plat/socionext/uniphier/uniphier_xlat_setup.c
@@ -10,6 +10,7 @@
#include <common/debug.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
+#include <plat/common/platform.h>
#include "uniphier.h"
@@ -65,4 +66,16 @@
init_xlat_tables();
enable_mmu(0);
+
+#if PLAT_RO_XLAT_TABLES
+ {
+ int ret;
+
+ ret = xlat_make_tables_readonly();
+ if (ret) {
+ ERROR("Failed to make translation tables read-only.");
+ plat_error_handler(ret);
+ }
+ }
+#endif
}