| # -*- makefile -*- |
| # Copyright (c) 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 |
| # |
| |
| # Select ARMv7-m bare-metal toolchain |
| CROSS_COMPILE?=arm-none-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 ($(CONFIG_LTO),) |
| CFLAGS_CPU+=-flto |
| LDFLAGS_EXTRA+=-flto |
| endif |
| |
| core-y=cpu.o init.o ldivmod.o uldivmod.o |
| core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o |
| core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o |
| core-$(CONFIG_WATCHDOG)+=watchdog.o |
| core-$(CONFIG_MPU)+=mpu.o |
