plat: rcar: force disable core ALSR
We need to disable core ASLR for two reasons:
1. There is no source for ALSR seed, as Rcar platform
does not provide DTB to OP-TEE
2. OP-TEE crashes during boot with enabled CFG_CORE_ASLR
Mainly we are disabling ASLR for the second reason. Further
investigation is needed to see why enabled ASLR causes data
abort in MMIO functions.
Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/core/arch/arm/plat-rcar/conf.mk b/core/arch/arm/plat-rcar/conf.mk
index 6e8445b..1073c7c 100644
--- a/core/arch/arm/plat-rcar/conf.mk
+++ b/core/arch/arm/plat-rcar/conf.mk
@@ -10,6 +10,14 @@
$(call force,CFG_CORE_LARGE_PHYS_ADDR,y)
$(call force,CFG_CORE_ARM64_PA_BITS,36)
+# Disable core ASLR for two reasons:
+# 1. There is no source for ALSR seed, as Rcar platform
+# does not provide DTB to OP-TEE. Also, there is no
+# publically available documentation on integrated
+# hardware RNG, so we can't use it either.
+# 2. OP-TEE crashes during boot with enabled CFG_CORE_ASLR.
+$(call force,CFG_CORE_ASLR,n)
+
ifeq ($(PLATFORM_FLAVOR),salvator_h3)
$(call force,CFG_TEE_CORE_NB_CORE,8)
endif
