# -*- makefile -*-
# Copyright 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Cortex-M4 core OS files build
#

# Use coreboot-sdk
$(call set-option,CROSS_COMPILE,\
	$(CROSS_COMPILE_arm),\
	/opt/coreboot-sdk/bin/arm-eabi-)

# FPU compilation flags
CFLAGS_FPU-$(CONFIG_FPU)=-mfpu=fpv4-sp-d16 -mfloat-abi=hard

# CPU specific compilation flags
CFLAGS_CPU+=-mthumb -Os -mno-sched-prolog
CFLAGS_CPU+=-mno-unaligned-access
CFLAGS_CPU+=$(CFLAGS_FPU-y)

ifneq ($(CONFIG_LTO),)
CFLAGS_CPU+=-flto
LDFLAGS_EXTRA+=-flto
endif

core-y=cpu.o debug.o init.o ldivmod.o llsr.o uldivmod.o vecttable.o
core-$(CONFIG_AES)+=aes.o
core-$(CONFIG_AES_GCM)+=ghash.o
core-$(CONFIG_ARMV7M_CACHE)+=cache.o
core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o
core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o
core-$(CONFIG_WATCHDOG)+=watchdog.o
core-$(CONFIG_MPU)+=mpu.o