[deliverable/linux.git] / arch / arc / Makefile

#
# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#

UTS_MACHINE := arc

ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := arc-linux-
endif

KBUILD_DEFCONFIG := nsim_700_defconfig

cflags-y	+= -fno-common -pipe -fno-builtin -D__linux__
cflags-$(CONFIG_ISA_ARCOMPACT)	+= -mA7
cflags-$(CONFIG_ISA_ARCV2)	+= -mcpu=archs

ifdef CONFIG_ARC_CURR_IN_REG
# For a global register defintion, make sure it gets passed to every file
# We had a customer reported bug where some code built in kernel was NOT using
# any kernel headers, and missing the r25 global register
# Can't do unconditionally because of recursive include issues
# due to <linux/thread_info.h>
LINUXINCLUDE	+=  -include ${src}/arch/arc/include/asm/current.h
endif

upto_gcc44    :=  $(call cc-ifversion, -le, 0404, y)
atleast_gcc44 :=  $(call cc-ifversion, -ge, 0404, y)
atleast_gcc48 :=  $(call cc-ifversion, -ge, 0408, y)

cflags-$(atleast_gcc44)			+= -fsection-anchors

cflags-$(CONFIG_ARC_HAS_LLSC)		+= -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape

ifdef CONFIG_ISA_ARCV2

ifndef CONFIG_ARC_HAS_LL64
cflags-y				+= -mno-ll64
endif

ifndef CONFIG_ARC_HAS_DIV_REM
cflags-y				+= -mno-div-rem
endif

endif

cflags-$(CONFIG_ARC_DW2_UNWIND)		+= -fasynchronous-unwind-tables

# By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok
ifeq ($(atleast_gcc48),y)
cflags-$(CONFIG_ARC_DW2_UNWIND)		+= -gdwarf-2
endif

ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
# Generic build system uses -O2, we want -O3
# Note: No need to add to cflags-y as that happens anyways
ARCH_CFLAGS += -O3
endif

# small data is default for elf32 tool-chain. If not usable, disable it
# This also allows repurposing GP as scratch reg to gcc reg allocator
disable_small_data := y
cflags-$(disable_small_data)		+= -mno-sdata -fcall-used-gp

cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= -mbig-endian
ldflags-$(CONFIG_CPU_BIG_ENDIAN)	+= -EB

# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
ldflags-$(upto_gcc44)			+= -marclinux

LIBGCC	:= $(shell $(CC) $(cflags-y) --print-libgcc-file-name)

# Modules with short calls might break for calls into builtin-kernel
KBUILD_CFLAGS_MODULE	+= -mlong-calls -mno-millicode

# Finally dump eveything into kernel build system
KBUILD_CFLAGS	+= $(cflags-y)
KBUILD_AFLAGS	+= $(KBUILD_CFLAGS)
LDFLAGS		+= $(ldflags-y)

head-y		:= arch/arc/kernel/head.o

# See arch/arc/Kbuild for content of core part of the kernel
core-y		+= arch/arc/

# w/o this dtb won't embed into kernel binary
core-y		+= arch/arc/boot/dts/

core-$(CONFIG_ARC_PLAT_SIM)	+= arch/arc/plat-sim/
core-$(CONFIG_ARC_PLAT_TB10X)	+= arch/arc/plat-tb10x/
core-$(CONFIG_ARC_PLAT_AXS10X)	+= arch/arc/plat-axs10x/

drivers-$(CONFIG_OPROFILE)	+= arch/arc/oprofile/

libs-y		+= arch/arc/lib/ $(LIBGCC)

boot		:= arch/arc/boot

#default target for make without any arguements.
KBUILD_IMAGE	:= bootpImage

all:	$(KBUILD_IMAGE)
bootpImage: vmlinux

boot_targets += uImage uImage.bin uImage.gz

$(boot_targets): vmlinux
	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

%.dtb %.dtb.S %.dtb.o: scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@

dtbs: scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts

archclean:
	$(Q)$(MAKE) $(clean)=$(boot)

# Hacks to enable final link due to absence of link-time branch relexation
# and gcc choosing optimal(shorter) branches at -O3
#
# vineetg Feb 2010: -mlong-calls switched off for overall kernel build
# However lib/decompress_inflate.o (.init.text) calls
# zlib_inflate_workspacesize (.text) causing relocation errors.
# Thus forcing all exten calls in this file to be long calls
export CFLAGS_decompress_inflate.o = -mmedium-calls
export CFLAGS_initramfs.o = -mmedium-calls
ifdef CONFIG_SMP
export CFLAGS_core.o = -mmedium-calls
endif
Commit	Line	Data
cfdbc2e1 VG	1	#
	2	# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
	3	#
	4	# This program is free software; you can redistribute it and/or modify
	5	# it under the terms of the GNU General Public License version 2 as
	6	# published by the Free Software Foundation.
	7	#
	8
	9	UTS_MACHINE := arc
	10
af4c3ae3	11	ifeq ($(CROSS_COMPILE),)
7c42eaf6	12	CROSS_COMPILE := arc-linux-
af4c3ae3 VG	13	endif
af4c3ae3 VG	14
7a70bf79	15	KBUILD_DEFCONFIG := nsim_700_defconfig
cfdbc2e1	16
1f6ccfff	17	cflags-y += -fno-common -pipe -fno-builtin -D__linux__
40b8ad8f VG	18	cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7
40b8ad8f VG	19	cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs
cfdbc2e1	20
080c3747 VG	21	ifdef CONFIG_ARC_CURR_IN_REG
	22	# For a global register defintion, make sure it gets passed to every file
	23	# We had a customer reported bug where some code built in kernel was NOT using
	24	# any kernel headers, and missing the r25 global register
8235703e	25	# Can't do unconditionally because of recursive include issues
080c3747 VG	26	# due to <linux/thread_info.h>
	27	LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
	28	endif
	29
5a45da02 VG	30	upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
	31	atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
	32	atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y)
	33
cfdbc2e1 VG	34	cflags-$(atleast_gcc44) += -fsection-anchors
	35
	36	cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
	37	cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
565a9b49	38
d05a76ab AB	39	ifdef CONFIG_ISA_ARCV2
d05a76ab AB	40
1f6ccfff	41	ifndef CONFIG_ARC_HAS_LL64
d05a76ab AB	42	cflags-y += -mno-ll64
	43	endif
	44
	45	ifndef CONFIG_ARC_HAS_DIV_REM
	46	cflags-y += -mno-div-rem
	47	endif
	48
1f6ccfff VG	49	endif
1f6ccfff VG	50
cfdbc2e1 VG	51	cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
cfdbc2e1 VG	52
5a45da02 VG	53	# By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok
	54	ifeq ($(atleast_gcc48),y)
	55	cflags-$(CONFIG_ARC_DW2_UNWIND) += -gdwarf-2
	56	endif
	57
cfdbc2e1 VG	58	ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
cfdbc2e1 VG	59	# Generic build system uses -O2, we want -O3
97709069 VG	60	# Note: No need to add to cflags-y as that happens anyways
97709069 VG	61	ARCH_CFLAGS += -O3
cfdbc2e1 VG	62	endif
	63
	64	# small data is default for elf32 tool-chain. If not usable, disable it
	65	# This also allows repurposing GP as scratch reg to gcc reg allocator
	66	disable_small_data := y
	67	cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
	68
	69	cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
	70	ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
	71
5a45da02	72	# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
cfdbc2e1	73	# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
5a45da02 VG	74	# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
5a45da02 VG	75	ldflags-$(upto_gcc44) += -marclinux
cfdbc2e1	76
68d8feee	77	LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
cfdbc2e1 VG	78
cfdbc2e1 VG	79	# Modules with short calls might break for calls into builtin-kernel
07fd7d4b	80	KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
cfdbc2e1 VG	81
	82	# Finally dump eveything into kernel build system
	83	KBUILD_CFLAGS += $(cflags-y)
	84	KBUILD_AFLAGS += $(KBUILD_CFLAGS)
	85	LDFLAGS += $(ldflags-y)
	86
cfdbc2e1 VG	87	head-y := arch/arc/kernel/head.o
	88
	89	# See arch/arc/Kbuild for content of core part of the kernel
	90	core-y += arch/arc/
	91
999159a5 VG	92	# w/o this dtb won't embed into kernel binary
	93	core-y += arch/arc/boot/dts/
	94
fd155792 VG	95	core-$(CONFIG_ARC_PLAT_SIM) += arch/arc/plat-sim/
fd155792 VG	96	core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
556cc1c5	97	core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
cfdbc2e1	98
769bc1fd VG	99	drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
769bc1fd VG	100
cfdbc2e1 VG	101	libs-y += arch/arc/lib/ $(LIBGCC)
cfdbc2e1 VG	102
fb0990bb VG	103	boot := arch/arc/boot
fb0990bb VG	104
cfdbc2e1	105	#default target for make without any arguements.
fb0990bb	106	KBUILD_IMAGE := bootpImage
cfdbc2e1 VG	107
cfdbc2e1 VG	108	all: $(KBUILD_IMAGE)
cfdbc2e1 VG	109	bootpImage: vmlinux
cfdbc2e1 VG	110
104058ed VG	111	boot_targets += uImage uImage.bin uImage.gz
	112
	113	$(boot_targets): vmlinux
cfdbc2e1 VG	114	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
cfdbc2e1 VG	115
999159a5 VG	116	%.dtb %.dtb.S %.dtb.o: scripts
	117	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
	118
	119	dtbs: scripts
10375ccc	120	$(Q)$(MAKE) $(build)=$(boot)/dts
999159a5	121
cfdbc2e1 VG	122	archclean:
	123	$(Q)$(MAKE) $(clean)=$(boot)
	124
	125	# Hacks to enable final link due to absence of link-time branch relexation
	126	# and gcc choosing optimal(shorter) branches at -O3
	127	#
	128	# vineetg Feb 2010: -mlong-calls switched off for overall kernel build
	129	# However lib/decompress_inflate.o (.init.text) calls
	130	# zlib_inflate_workspacesize (.text) causing relocation errors.
	131	# Thus forcing all exten calls in this file to be long calls
	132	export CFLAGS_decompress_inflate.o = -mmedium-calls
	133	export CFLAGS_initramfs.o = -mmedium-calls
41195d23 VG	134	ifdef CONFIG_SMP
	135	export CFLAGS_core.o = -mmedium-calls
	136	endif