BL2_AT_EL3: add PIE support
This implementation simply mimics that of BL31.
I did not implement the ENABLE_PIE support for BL2_IN_XIP_MEM=1 case.
It would make the linker script a bit uglier.
Change-Id: If3215abd99f2758dfb232e44b50320d04eba808b
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/bl2/aarch64/bl2_el3_entrypoint.S b/bl2/aarch64/bl2_el3_entrypoint.S
index 2ca6acf..4eab39c 100644
--- a/bl2/aarch64/bl2_el3_entrypoint.S
+++ b/bl2/aarch64/bl2_el3_entrypoint.S
@@ -4,6 +4,8 @@
* SPDX-License-Identifier: BSD-3-Clause
*/
+#include <platform_def.h>
+
#include <arch.h>
#include <asm_macros.S>
#include <common/bl_common.h>
@@ -13,6 +15,12 @@
.globl bl2_el3_run_image
.globl bl2_run_next_image
+#if BL2_IN_XIP_MEM
+#define FIXUP_SIZE 0
+#else
+#define FIXUP_SIZE ((BL2_LIMIT) - (BL2_BASE))
+#endif
+
func bl2_entrypoint
/* Save arguments x0-x3 from previous Boot loader */
mov x20, x0
@@ -27,7 +35,7 @@
_init_memory=1 \
_init_c_runtime=1 \
_exception_vectors=bl2_el3_exceptions \
- _pie_fixup_size=0
+ _pie_fixup_size=FIXUP_SIZE
/* ---------------------------------------------
* Restore parameters of boot rom