[GitHub/mt8127/android_kernel_alcatel_ttab.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-elf32-
endif

KBUILD_DEFCONFIG := fpga_defconfig

cflags-y	+= -mA7 -fno-common -pipe -fno-builtin -D__linux__

LINUXINCLUDE	+=  -include ${src}/arch/arc/include/asm/defines.h

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 (like above) because of recursive include issues
# due to <linux/thread_info.h>
LINUXINCLUDE	+=  -include ${src}/arch/arc/include/asm/current.h
endif

atleast_gcc44 :=  $(call cc-ifversion, -gt, 0402, y)
cflags-$(atleast_gcc44)			+= -fsection-anchors

cflags-$(CONFIG_ARC_HAS_LLSC)		+= -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape
cflags-$(CONFIG_ARC_HAS_RTSC)		+= -mrtsc
cflags-$(CONFIG_ARC_DW2_UNWIND)		+= -fasynchronous-unwind-tables

ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
# Generic build system uses -O2, we want -O3
cflags-y  += -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:
# 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-y				+= -marclinux

ARC_LIBGCC				:= -mA7
cflags-$(CONFIG_ARC_HAS_HW_MPY)		+= -multcost=16

ifndef CONFIG_ARC_HAS_HW_MPY
	cflags-y	+= -mno-mpy

# newlib for ARC700 assumes MPY to be always present, which is generally true
# However, if someone really doesn't want MPY, we need to use the 600 ver
# which coupled with -mno-mpy will use mpy emulation
# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments,
# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted

	ARC_LIBGCC		:= -marc600
	ifneq ($(atleast_gcc44),y)
		cflags-y	+= -multcost=30
	endif
endif

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

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

# 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-$(CONFIG_ARC_PLAT_FPGA_LEGACY)	+= arch/arc/plat-arcfpga/
core-$(CONFIG_ARC_PLAT_TB10X)		+= arch/arc/plat-tb10x/

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 dtbs

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 VG	11	ifeq ($(CROSS_COMPILE),)
	12	CROSS_COMPILE := arc-elf32-
	13	endif
	14
cfdbc2e1 VG	15	KBUILD_DEFCONFIG := fpga_defconfig
cfdbc2e1 VG	16
cfdbc2e1 VG	17	cflags-y += -mA7 -fno-common -pipe -fno-builtin -D__linux__
cfdbc2e1 VG	18
af617428 VG	19	LINUXINCLUDE += -include ${src}/arch/arc/include/asm/defines.h
af617428 VG	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
	25	# Can't do unconditionally (like above) because of recursive include issues
	26	# due to <linux/thread_info.h>
	27	LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
	28	endif
	29
cfdbc2e1 VG	30	atleast_gcc44 := $(call cc-ifversion, -gt, 0402, y)
	31	cflags-$(atleast_gcc44) += -fsection-anchors
	32
	33	cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
	34	cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
	35	cflags-$(CONFIG_ARC_HAS_RTSC) += -mrtsc
	36	cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
	37
	38	ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
	39	# Generic build system uses -O2, we want -O3
	40	cflags-y += -O3
	41	endif
	42
	43	# small data is default for elf32 tool-chain. If not usable, disable it
	44	# This also allows repurposing GP as scratch reg to gcc reg allocator
	45	disable_small_data := y
	46	cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
	47
	48	cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
	49	ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
	50
	51	# STAR 9000518362:
	52	# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
	53	# --build-id w/o "-marclinux".
	54	# Default arc-elf32-ld is OK
	55	ldflags-y += -marclinux
	56
	57	ARC_LIBGCC := -mA7
	58	cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16
	59
	60	ifndef CONFIG_ARC_HAS_HW_MPY
	61	cflags-y += -mno-mpy
	62
	63	# newlib for ARC700 assumes MPY to be always present, which is generally true
	64	# However, if someone really doesn't want MPY, we need to use the 600 ver
	65	# which coupled with -mno-mpy will use mpy emulation
	66	# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments,
	67	# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted
	68
	69	ARC_LIBGCC := -marc600
	70	ifneq ($(atleast_gcc44),y)
	71	cflags-y += -multcost=30
	72	endif
	73	endif
	74
	75	LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name)
	76
	77	# Modules with short calls might break for calls into builtin-kernel
	78	KBUILD_CFLAGS_MODULE += -mlong-calls
	79
	80	# Finally dump eveything into kernel build system
	81	KBUILD_CFLAGS += $(cflags-y)
	82	KBUILD_AFLAGS += $(KBUILD_CFLAGS)
	83	LDFLAGS += $(ldflags-y)
	84
cfdbc2e1 VG	85	head-y := arch/arc/kernel/head.o
	86
	87	# See arch/arc/Kbuild for content of core part of the kernel
	88	core-y += arch/arc/
	89
999159a5 VG	90	# w/o this dtb won't embed into kernel binary
	91	core-y += arch/arc/boot/dts/
	92
e97ff121	93	core-$(CONFIG_ARC_PLAT_FPGA_LEGACY) += arch/arc/plat-arcfpga/
072eb693	94	core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
cfdbc2e1	95
769bc1fd VG	96	drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
769bc1fd VG	97
cfdbc2e1 VG	98	libs-y += arch/arc/lib/ $(LIBGCC)
cfdbc2e1 VG	99
fb0990bb VG	100	boot := arch/arc/boot
fb0990bb VG	101
cfdbc2e1	102	#default target for make without any arguements.
fb0990bb	103	KBUILD_IMAGE := bootpImage
cfdbc2e1 VG	104
cfdbc2e1 VG	105	all: $(KBUILD_IMAGE)
cfdbc2e1 VG	106	bootpImage: vmlinux
cfdbc2e1 VG	107
104058ed VG	108	boot_targets += uImage uImage.bin uImage.gz
	109
	110	$(boot_targets): vmlinux
cfdbc2e1 VG	111	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
cfdbc2e1 VG	112
999159a5 VG	113	%.dtb %.dtb.S %.dtb.o: scripts
	114	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
	115
	116	dtbs: scripts
	117	$(Q)$(MAKE) $(build)=$(boot)/dts dtbs
	118
cfdbc2e1 VG	119	archclean:
	120	$(Q)$(MAKE) $(clean)=$(boot)
	121
	122	# Hacks to enable final link due to absence of link-time branch relexation
	123	# and gcc choosing optimal(shorter) branches at -O3
	124	#
	125	# vineetg Feb 2010: -mlong-calls switched off for overall kernel build
	126	# However lib/decompress_inflate.o (.init.text) calls
	127	# zlib_inflate_workspacesize (.text) causing relocation errors.
	128	# Thus forcing all exten calls in this file to be long calls
	129	export CFLAGS_decompress_inflate.o = -mmedium-calls
	130	export CFLAGS_initramfs.o = -mmedium-calls
41195d23 VG	131	ifdef CONFIG_SMP
	132	export CFLAGS_core.o = -mmedium-calls
	133	endif