1# 2# Copyright (C) 2006 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15# 16 17# Configuration for Linux on ARM. 18# Included by combo/select.mk 19 20# You can set TARGET_ARCH_VARIANT to use an arch version other 21# than ARMv5TE. Each value should correspond to a file named 22# $(BUILD_COMBOS)/arch/<name>.mk which must contain 23# makefile variable definitions. Their 24# purpose is to allow module Android.mk files to selectively compile 25# different versions of code based upon the funtionality and 26# instructions available in a given architecture version. 27# 28# The blocks also define specific arch_variant_cflags, which 29# include defines, and compiler settings for the given architecture 30# version. 31# 32ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)),) 33TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT := generic 34endif 35 36KNOWN_ARMv8_CORES := cortex-a53 cortex-a53.a57 cortex-a55 cortex-a73 cortex-a75 37KNOWN_ARMv8_CORES += kryo denver64 exynos-m1 exynos-m2 38 39# Many devices (incorrectly) use armv7-a-neon as the 2nd architecture variant 40# for cores that implement armv8-a ISAs. The following sets it to armv8-a. 41ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES))) 42 ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-a) 43 $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-a.) 44 ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)) 45 $(warning TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT), ignored! Use armv8-a instead.) 46 endif 47 # Overwrite TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT 48 TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv8-a 49 endif 50endif 51 52ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)),) 53$(error TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT must be set) 54endif 55 56TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk 57ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),) 58$(error Unknown ARM architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)) 59endif 60 61include $(TARGET_ARCH_SPECIFIC_MAKEFILE) 62include $(BUILD_SYSTEM)/combo/fdo.mk 63 64define $(combo_var_prefix)transform-shared-lib-to-toc 65$(call _gen_toc_command_for_elf,$(1),$(2)) 66endef 67 68$(combo_2nd_arch_prefix)TARGET_PACK_MODULE_RELOCATIONS := true 69 70$(combo_2nd_arch_prefix)TARGET_LINKER := /system/bin/linker 71