Restore some defines in xlat_tables.h
Commit e8719552a24 removed some definitions related to translation
tables from the xlat_tables.h header file, based on the assumption
that they weren't used by any platform. These are actually used by
some partners so this patch restores them.
Fixes ARM-software/tf-issues#425
Change-Id: Idafa5f00bb0bd9c2847b5ae6541cf8db93c7b89a
diff --git a/include/lib/xlat_tables.h b/include/lib/xlat_tables.h
index d2ac6db..0e9800a 100644
--- a/include/lib/xlat_tables.h
+++ b/include/lib/xlat_tables.h
@@ -32,13 +32,27 @@
#define __XLAT_TABLES_H__
/* Miscellaneous MMU related constants */
+#define NUM_2MB_IN_GB (1 << 9)
+#define NUM_4K_IN_2MB (1 << 9)
+#define NUM_GB_IN_4GB (1 << 2)
+
+#define TWO_MB_SHIFT 21
+#define ONE_GB_SHIFT 30
#define FOUR_KB_SHIFT 12
+#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
+#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
+#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
+
#define INVALID_DESC 0x0
#define BLOCK_DESC 0x1 /* Table levels 0-2 */
#define TABLE_DESC 0x3 /* Table levels 0-2 */
#define PAGE_DESC 0x3 /* Table level 3 */
+#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
+#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
+#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
+
#define XN (1ull << 2)
#define PXN (1ull << 1)
#define CONT_HINT (1ull << 0)
