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60e47a730f
In order to achieve really tiny firmwares, make our runtime (tasks, hooks, muxed timers, GPIO abstraction ...) optional. Add 2 new build options for it : CONFIG_COMMON_RUNTIME and CONFIG_COMMON_GPIO which are enabled by default, and ensure all the source files are built according to the right configuration variable. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=make buildall build a minimal board with no runtime. Change-Id: Icb621cbe0a75b3a320cb53c3267d6e578cd3c32f Reviewed-on: https://chromium-review.googlesource.com/189403 Reviewed-by: Vic Yang <victoryang@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org>
25 lines
690 B
Makefile
25 lines
690 B
Makefile
# -*- makefile -*-
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# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# Cortex-M4 core OS files build
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#
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# Select ARMv7-m bare-metal toolchain
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CROSS_COMPILE?=arm-none-eabi-
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# FPU compilation flags
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CFLAGS_FPU-$(CONFIG_FPU)=-mfpu=fpv4-sp-d16 -mfloat-abi=hard
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# CPU specific compilation flags
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CFLAGS_CPU+=-mthumb -Os -mno-sched-prolog
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CFLAGS_CPU+=-mno-unaligned-access
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CFLAGS_CPU+=$(CFLAGS_FPU-y)
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core-y=cpu.o init.o
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core-$(CONFIG_COMMON_PANIC_OUTPUT)+=panic.o
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core-$(CONFIG_COMMON_RUNTIME)+=switch.o task.o
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core-$(CONFIG_WATCHDOG)+=watchdog.o
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core-$(CONFIG_MPU)+=mpu.o
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