arch/m68k/Makefile

Source file repositories/reference/linux-study-clean/arch/m68k/Makefile

File Facts

System
Linux kernel
Corpus path
arch/m68k/Makefile
Extension
[no extension]
Size
3897 bytes
Lines
135
Domain
Architecture Layer
Bucket
arch/m68k
Inferred role
Architecture Layer: build/configuration rule
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#
# m68k/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Hamish Macdonald
# Copyright (C) 2002,2011 Greg Ungerer <gerg@snapgear.com>
#

KBUILD_DEFCONFIG := multi_defconfig

ifdef cross_compiling
    ifeq ($(CROSS_COMPILE),)
		CROSS_COMPILE := $(call cc-cross-prefix, \
			m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)
    endif
endif

#
#	Enable processor type. Ordering of these is important - we want to
#	use the minimum processor type of the range we support. The logic
#	for 680x0 will only allow use of the -m68060 or -m68040 if no other
#	680x0 type is specified - and no option is specified for 68030 or
#	68020. The other m68k/ColdFire types always specify some type of
#	compiler cpu type flag.
#
ifndef CONFIG_M68040
cpuflags-$(CONFIG_M68060)	= -m68060
endif
ifndef CONFIG_M68060
cpuflags-$(CONFIG_M68040)	= -m68040
endif
cpuflags-$(CONFIG_M68030)	=
cpuflags-$(CONFIG_M68020)	=
cpuflags-$(CONFIG_M68000)	= -m68000
cpuflags-$(CONFIG_M5441x)	= $(call cc-option,-mcpu=54455,-mcfv4e)
cpuflags-$(CONFIG_M54xx)	= $(call cc-option,-mcpu=5475,-m5200)
cpuflags-$(CONFIG_M5407)	= $(call cc-option,-mcpu=5407,-m5200)
cpuflags-$(CONFIG_M532x)	= $(call cc-option,-mcpu=532x,-m5307)
cpuflags-$(CONFIG_M537x)	= $(call cc-option,-mcpu=537x,-m5307)
cpuflags-$(CONFIG_M5307)	= $(call cc-option,-mcpu=5307,-m5200)
cpuflags-$(CONFIG_M528x)	= $(call cc-option,-mcpu=528x,-m5307)
cpuflags-$(CONFIG_M5275)	= $(call cc-option,-mcpu=5275,-m5307)
cpuflags-$(CONFIG_M5272)	= $(call cc-option,-mcpu=5272,-m5307)
cpuflags-$(CONFIG_M5271)	= $(call cc-option,-mcpu=5271,-m5307)
cpuflags-$(CONFIG_M523x)	= $(call cc-option,-mcpu=523x,-m5307)
cpuflags-$(CONFIG_M525x)	= $(call cc-option,-mcpu=5253,-m5200)
cpuflags-$(CONFIG_M5249)	= $(call cc-option,-mcpu=5249,-m5200)
cpuflags-$(CONFIG_M520x)	= $(call cc-option,-mcpu=5208,-m5200)
cpuflags-$(CONFIG_M5206e)	= $(call cc-option,-mcpu=5206e,-m5200)
cpuflags-$(CONFIG_M5206)	= $(call cc-option,-mcpu=5206,-m5200)

# Evaluate tune cc-option calls now
cpuflags-y := $(cpuflags-y)

KBUILD_AFLAGS += $(cpuflags-y)
KBUILD_CFLAGS += $(cpuflags-y)

KBUILD_CFLAGS += -pipe -ffreestanding

ifdef CONFIG_MMU
KBUILD_CFLAGS += -ffixed-a2
else
# we can use a m68k-linux-gcc toolchain with these in place
KBUILD_CPPFLAGS += -DUTS_SYSNAME=\"uClinux\"

Annotation

Implementation Notes