ARM platforms: Add support for EL3 TZC memory region
Some recent enhancements to EL3 runtime firmware like support for
save and restoring GICv3 register context during system_suspend
necessitates additional data memory for the firmware. This patch
introduces support for creating a TZC secured DDR carveout for use
by ARM reference platforms. A new linker section `el3_tzc_dram` is
created using platform supplied linker script and data marked with
the attribute `arm_el3_tzc_dram` will be placed in this section.
The FVP makefile now defines the `PLAT_EXTRA_LD_SCRIPT` variable to
allow inclusion of the platform linker script by the top level BL31
linker script.
Change-Id: I0e7f4a75a6ac51419c667875ff2677043df1585d
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/plat/arm/board/fvp/include/plat.ld.S b/plat/arm/board/fvp/include/plat.ld.S
new file mode 100644
index 0000000..24c3deb
--- /dev/null
+++ b/plat/arm/board/fvp/include/plat.ld.S
@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#ifndef __PLAT_LD_S__
+#define __PLAT_LD_S__
+
+#include <arm_common.ld.S>
+
+#endif /* __PLAT_LD_S__ */
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 29da12e..1b50296 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -155,5 +155,8 @@
NEED_BL32 := yes
endif
+# Add support for platform supplied linker script for BL31 build
+$(eval $(call add_define,PLAT_EXTRA_LD_SCRIPT))
+
include plat/arm/board/common/board_common.mk
include plat/arm/common/arm_common.mk
diff --git a/plat/arm/common/arm_tzc400.c b/plat/arm/common/arm_tzc400.c
index 1d61c57..e19ca67 100644
--- a/plat/arm/common/arm_tzc400.c
+++ b/plat/arm/common/arm_tzc400.c
@@ -40,7 +40,7 @@
/* Region 1 set to cover Secure part of DRAM */
tzc400_configure_region(PLAT_ARM_TZC_FILTERS, 1,
- ARM_AP_TZC_DRAM1_BASE, ARM_AP_TZC_DRAM1_END,
+ ARM_AP_TZC_DRAM1_BASE, ARM_EL3_TZC_DRAM1_END,
TZC_REGION_S_RDWR,
0);
diff --git a/plat/arm/common/arm_tzc_dmc500.c b/plat/arm/common/arm_tzc_dmc500.c
index 21ca4e8..8e41391 100644
--- a/plat/arm/common/arm_tzc_dmc500.c
+++ b/plat/arm/common/arm_tzc_dmc500.c
@@ -33,7 +33,7 @@
/* Region 1 set to cover Secure part of DRAM */
tzc_dmc500_configure_region(1, ARM_AP_TZC_DRAM1_BASE,
- ARM_AP_TZC_DRAM1_END,
+ ARM_EL3_TZC_DRAM1_END,
TZC_REGION_S_RDWR,
0);