SPM: Move shim layer to TTBR1_EL1
This gives each Secure Partition complete freedom on its address space.
Previously, the memory used by the exception vectors was reserved and
couldn't be used. Also, it always had to be mapped, forcing SPM to
generate translation tables that included the exception vectors as well
as the Partition memory regions. With this change, partitions can reduce
their address space size easily.
Change-Id: I67fb5e9bdf2870b73347f23bff702fab0a8f8711
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/services/std_svc/spm/spm_private.h b/services/std_svc/spm/spm_private.h
index 1d5a88e..8b98e8c 100644
--- a/services/std_svc/spm/spm_private.h
+++ b/services/std_svc/spm/spm_private.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -95,6 +95,10 @@
void spm_sp_request_decrease(sp_context_t *sp_ctx);
int spm_sp_request_increase_if_zero(sp_context_t *sp_ctx);
+/* Functions related to the shim layer translation tables */
+void spm_exceptions_xlat_init_context(void);
+uint64_t *spm_exceptions_xlat_get_base_table(void);
+
/* Functions related to the translation tables management */
xlat_ctx_t *spm_sp_xlat_context_alloc(void);
void sp_map_memory_regions(sp_context_t *sp_ctx);