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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
9UTS_MACHINE := arc
10
11ifeq ($(CROSS_COMPILE),)
12ifndef CONFIG_CPU_BIG_ENDIAN
13CROSS_COMPILE := arc-linux-
14else
15CROSS_COMPILE := arceb-linux-
16endif
17endif
18
19KBUILD_DEFCONFIG := nsim_700_defconfig
20
21cflags-y += -fno-common -pipe -fno-builtin -D__linux__
22cflags-$(CONFIG_ISA_ARCOMPACT) += -mA7
23cflags-$(CONFIG_ISA_ARCV2) += -mcpu=archs
24
25is_700 = $(shell $(CC) -dM -E - < /dev/null | grep -q "ARC700" && echo 1 || echo 0)
26
27ifdef CONFIG_ISA_ARCOMPACT
28ifeq ($(is_700), 0)
29 $(error Toolchain not configured for ARCompact builds)
30endif
31endif
32
33ifdef CONFIG_ISA_ARCV2
34ifeq ($(is_700), 1)
35 $(error Toolchain not configured for ARCv2 builds)
36endif
37endif
38
39ifdef CONFIG_ARC_CURR_IN_REG
40# For a global register defintion, make sure it gets passed to every file
41# We had a customer reported bug where some code built in kernel was NOT using
42# any kernel headers, and missing the r25 global register
43# Can't do unconditionally because of recursive include issues
44# due to <linux/thread_info.h>
45LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
46endif
47
48upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
49atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
50
51cflags-$(atleast_gcc44) += -fsection-anchors
52
53cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
54cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
55
56ifdef CONFIG_ISA_ARCV2
57
58ifndef CONFIG_ARC_HAS_LL64
59cflags-y += -mno-ll64
60endif
61
62ifndef CONFIG_ARC_HAS_DIV_REM
63cflags-y += -mno-div-rem
64endif
65
66endif
67
68cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
69cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi)
70
71ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
72# Generic build system uses -O2, we want -O3
73# Note: No need to add to cflags-y as that happens anyways
74#
75# Disable the false maybe-uninitialized warings gcc spits out at -O3
76ARCH_CFLAGS += -O3 $(call cc-disable-warning,maybe-uninitialized,)
77endif
78
79# small data is default for elf32 tool-chain. If not usable, disable it
80# This also allows repurposing GP as scratch reg to gcc reg allocator
81disable_small_data := y
82cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
83
84cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
85ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
86
87# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
88# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
89# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
90ldflags-$(upto_gcc44) += -marclinux
91
92LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
93
94# Modules with short calls might break for calls into builtin-kernel
95KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
96
97# Finally dump eveything into kernel build system
98KBUILD_CFLAGS += $(cflags-y)
99KBUILD_AFLAGS += $(KBUILD_CFLAGS)
100LDFLAGS += $(ldflags-y)
101
102head-y := arch/arc/kernel/head.o
103
104# See arch/arc/Kbuild for content of core part of the kernel
105core-y += arch/arc
106
107# w/o this dtb won't embed into kernel binary
108core-y += arch/arc/boot/dts/
109
110core-$(CONFIG_ARC_PLAT_SIM) += arch/arc/plat-sim/
111core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
112core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
113core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/
114
115ifdef CONFIG_ARC_PLAT_EZNPS
116KBUILD_CPPFLAGS += -I$(srctree)/arch/arc/plat-eznps/include
117endif
118
119drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
120
121libs-y += arch/arc/lib/ $(LIBGCC)
122
123boot := arch/arc/boot
124
125#default target for make without any arguments.
126KBUILD_IMAGE := bootpImage
127
128all: $(KBUILD_IMAGE)
129bootpImage: vmlinux
130
131boot_targets += uImage uImage.bin uImage.gz
132
133$(boot_targets): vmlinux
134 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
135
136%.dtb %.dtb.S %.dtb.o: scripts
137 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
138
139dtbs: scripts
140 $(Q)$(MAKE) $(build)=$(boot)/dts
141
142archclean:
143 $(Q)$(MAKE) $(clean)=$(boot)
144
145# Hacks to enable final link due to absence of link-time branch relexation
146# and gcc choosing optimal(shorter) branches at -O3
147#
148# vineetg Feb 2010: -mlong-calls switched off for overall kernel build
149# However lib/decompress_inflate.o (.init.text) calls
150# zlib_inflate_workspacesize (.text) causing relocation errors.
151# Thus forcing all exten calls in this file to be long calls
152export CFLAGS_decompress_inflate.o = -mmedium-calls
153export CFLAGS_initramfs.o = -mmedium-calls
154ifdef CONFIG_SMP
155export CFLAGS_core.o = -mmedium-calls
156endif
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
4#
5
6KBUILD_DEFCONFIG := haps_hs_smp_defconfig
7
8ifeq ($(CROSS_COMPILE),)
9CROSS_COMPILE := $(call cc-cross-prefix, arc-linux- arceb-linux-)
10endif
11
12cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
13
14tune-mcpu-def-$(CONFIG_ISA_ARCOMPACT) := -mcpu=arc700
15tune-mcpu-def-$(CONFIG_ISA_ARCV2) := -mcpu=hs38
16
17ifeq ($(CONFIG_ARC_TUNE_MCPU),)
18cflags-y += $(tune-mcpu-def-y)
19else
20tune-mcpu := $(CONFIG_ARC_TUNE_MCPU)
21ifneq ($(call cc-option,$(tune-mcpu)),)
22cflags-y += $(tune-mcpu)
23else
24# The flag provided by 'CONFIG_ARC_TUNE_MCPU' option isn't known by this compiler
25# (probably the compiler is too old). Use ISA default mcpu flag instead as a safe option.
26$(warning ** WARNING ** CONFIG_ARC_TUNE_MCPU flag '$(tune-mcpu)' is unknown, fallback to '$(tune-mcpu-def-y)')
27cflags-y += $(tune-mcpu-def-y)
28endif
29endif
30
31
32ifdef CONFIG_ARC_CURR_IN_REG
33# For a global register definition, make sure it gets passed to every file
34# We had a customer reported bug where some code built in kernel was NOT using
35# any kernel headers, and missing the r25 global register
36# Can't do unconditionally because of recursive include issues
37# due to <linux/thread_info.h>
38LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h
39endif
40
41cflags-y += -fsection-anchors
42
43cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
44cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
45
46ifdef CONFIG_ISA_ARCV2
47
48ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS
49cflags-y += -munaligned-access
50else
51cflags-y += -mno-unaligned-access
52endif
53
54ifndef CONFIG_ARC_HAS_LL64
55cflags-y += -mno-ll64
56endif
57
58ifndef CONFIG_ARC_HAS_DIV_REM
59cflags-y += -mno-div-rem
60endif
61
62endif
63
64cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
65cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables $(cfi)
66
67# small data is default for elf32 tool-chain. If not usable, disable it
68# This also allows repurposing GP as scratch reg to gcc reg allocator
69disable_small_data := y
70cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
71
72cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
73ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
74
75LIBGCC = $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
76
77# Modules with short calls might break for calls into builtin-kernel
78KBUILD_CFLAGS_MODULE += -mlong-calls -mno-millicode
79
80# Finally dump eveything into kernel build system
81KBUILD_CFLAGS += $(cflags-y)
82KBUILD_AFLAGS += $(KBUILD_CFLAGS)
83KBUILD_LDFLAGS += $(ldflags-y)
84
85# w/o this dtb won't embed into kernel binary
86core-y += arch/arc/boot/dts
87
88core-y += arch/arc/plat-sim/
89core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
90core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
91core-$(CONFIG_ARC_SOC_HSDK) += arch/arc/plat-hsdk/
92
93libs-y += arch/arc/lib/ $(LIBGCC)
94
95boot := arch/arc/boot
96
97boot_targets := uImage.bin uImage.gz uImage.lzma
98
99PHONY += $(boot_targets)
100$(boot_targets): vmlinux
101 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
102
103uimage-default-y := uImage.bin
104uimage-default-$(CONFIG_KERNEL_GZIP) := uImage.gz
105uimage-default-$(CONFIG_KERNEL_LZMA) := uImage.lzma
106
107PHONY += uImage
108uImage: $(uimage-default-y)
109 @ln -sf $< $(boot)/uImage
110 @$(kecho) ' Image $(boot)/uImage is ready'
111
112CLEAN_FILES += $(boot)/uImage