Enable armv8-2a supporting on 2nd arch. variant
Newer cores are implementing armv8-2a ISAs.
Enabling 2nd arch. variant to support for new type of cores.
Test: set TARGET_2ND_ARCH_VARIANT := armv8-2a, build without warnings and not ignore armv8-2a
BUG: 118414869
Change-Id: I1cd64ab0ad9b253ec3d109ebd1dbc7882011ce77
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index ffb6021..4503062 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -36,9 +36,21 @@
KNOWN_ARMv8_CORES := cortex-a53 cortex-a53.a57 cortex-a55 cortex-a73 cortex-a75 cortex-a76
KNOWN_ARMv8_CORES += kryo denver64 exynos-m1 exynos-m2
+KNOWN_ARMv82a_CORES := cortex-a55 cortex-a75
+
+# Check for cores that implement armv8-2a ISAs.
+ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv82a_CORES)))
+ ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-2a)
+ $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-2a.)
+ ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
+ $(warning TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT), ignored! Use armv8-2a instead.)
+ endif
+ # Overwrite TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT
+ TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv8-2a
+ endif
# Many devices (incorrectly) use armv7-a-neon as the 2nd architecture variant
# for cores that implement armv8-a ISAs. The following sets it to armv8-a.
-ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES)))
+else ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES)))
ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-a)
$(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-a.)
ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))