| # -*- makefile -*- |
| # Copyright 2016 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| # |
| # Minute-IA core build |
| # |
| |
| # Select Minute-IA bare-metal toolchain |
| $(call set-option,CROSS_COMPILE,$(CROSS_COMPILE_i386),\ |
| /opt/coreboot-sdk/bin/i386-elf-) |
| |
| # FPU compilation flags |
| CFLAGS_FPU-$(CONFIG_FPU)= |
| |
| # CPU specific compilation flags |
| CFLAGS_CPU+=-O2 -fomit-frame-pointer -mno-accumulate-outgoing-args \ |
| -ffunction-sections -fdata-sections \ |
| -fno-builtin-printf -fno-builtin-sprintf \ |
| -fno-stack-protector -gdwarf-2 -fno-common -ffreestanding \ |
| -minline-all-stringops -fno-strict-aliasing |
| |
| CFLAGS_CPU+=$(CFLAGS_FPU-y) |
| |
| ifneq ($(CONFIG_LTO),) |
| CFLAGS_CPU+=-flto |
| LDFLAGS_EXTRA+=-flto |
| endif |
| |
| core-y=cpu.o init.o interrupts.o |
| core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o |
| core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o |
| core-$(CONFIG_MPU)+=mpu.o |
| |
| # for 64bit division |
| LDFLAGS_EXTRA+=-static-libgcc -lgcc |
