feat(rme): add xlat table library changes for FEAT_RME
FEAT_RME adds a new bit (NSE) in the translation table descriptor
to determine the Physical Address Space (PAS) of an EL3 stage 1
translation according to the following mapping:
TTD.NSE TTD.NS | PAS
=================================
0 0 | Secure
0 1 | Non-secure
1 0 | Root
1 1 | Realm
This patch adds modifications to version 2 of the translation table
library accordingly. Bits 4 and 5 in mmap attribute are used to
determine the PAS.
Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com>
Change-Id: I82790f6900b7a1ab9494c732eac7b9808a388103
diff --git a/lib/xlat_tables_v2/xlat_tables_private.h b/lib/xlat_tables_v2/xlat_tables_private.h
index 863470c..42c9a43 100644
--- a/lib/xlat_tables_v2/xlat_tables_private.h
+++ b/lib/xlat_tables_v2/xlat_tables_private.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2021, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -40,6 +40,9 @@
extern uint64_t mmu_cfg_params[MMU_CFG_PARAM_MAX];
+/* Determine the physical address space encoded in the 'attr' parameter. */
+uint32_t xlat_arch_get_pas(uint32_t attr);
+
/*
* Return the execute-never mask that will prevent instruction fetch at the
* given translation regime.