Loading...
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 := $(call cc-cross-prefix, arc-linux- arceb-linux- arc-linux-gnu-)
10endif
11
12cflags-y += -fno-common -pipe -fno-builtin -mmedium-calls -D__linux__
13
14tune-mcpu-def-$(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
31ifdef CONFIG_ARC_CURR_IN_REG
32# For a global register definition, make sure it gets passed to every file
33# We had a customer reported bug where some code built in kernel was NOT using
34# any kernel headers, and missing the global register
35# Can't do unconditionally because of recursive include issues
36# due to <linux/thread_info.h>
37LINUXINCLUDE += -include $(srctree)/arch/arc/include/asm/current.h
38cflags-y += -ffixed-gp
39endif
40
41cflags-y += -fsection-anchors
42
43cflags-$(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
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 += $(boot)/uImage
1#
2# Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3#
4# This program is free software; you can redistribute it and/or modify
5# it under the terms of the GNU General Public License version 2 as
6# published by the Free Software Foundation.
7#
8
9UTS_MACHINE := arc
10
11ifeq ($(CROSS_COMPILE),)
12CROSS_COMPILE := arc-linux-uclibc-
13endif
14
15KBUILD_DEFCONFIG := fpga_defconfig
16
17cflags-y += -mA7 -fno-common -pipe -fno-builtin -D__linux__
18
19ifdef CONFIG_ARC_CURR_IN_REG
20# For a global register defintion, make sure it gets passed to every file
21# We had a customer reported bug where some code built in kernel was NOT using
22# any kernel headers, and missing the r25 global register
23# Can't do unconditionally because of recursive include issues
24# due to <linux/thread_info.h>
25LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
26endif
27
28upto_gcc42 := $(call cc-ifversion, -le, 0402, y)
29upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
30atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
31atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y)
32
33cflags-$(atleast_gcc44) += -fsection-anchors
34
35cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
36cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
37cflags-$(CONFIG_ARC_HAS_RTSC) += -mrtsc
38cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables
39
40# By default gcc 4.8 generates dwarf4 which kernel unwinder can't grok
41ifeq ($(atleast_gcc48),y)
42cflags-$(CONFIG_ARC_DW2_UNWIND) += -gdwarf-2
43endif
44
45ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
46# Generic build system uses -O2, we want -O3
47cflags-y += -O3
48endif
49
50# small data is default for elf32 tool-chain. If not usable, disable it
51# This also allows repurposing GP as scratch reg to gcc reg allocator
52disable_small_data := y
53cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
54
55cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
56ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
57
58# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
59# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
60# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
61ldflags-$(upto_gcc44) += -marclinux
62
63ARC_LIBGCC := -mA7
64cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16
65
66ifndef CONFIG_ARC_HAS_HW_MPY
67 cflags-y += -mno-mpy
68
69# newlib for ARC700 assumes MPY to be always present, which is generally true
70# However, if someone really doesn't want MPY, we need to use the 600 ver
71# which coupled with -mno-mpy will use mpy emulation
72# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments,
73# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted
74
75 ifeq ($(upto_gcc42),y)
76 ARC_LIBGCC := -marc600
77 cflags-y += -multcost=30
78 endif
79endif
80
81LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name)
82
83# Modules with short calls might break for calls into builtin-kernel
84KBUILD_CFLAGS_MODULE += -mlong-calls
85
86# Finally dump eveything into kernel build system
87KBUILD_CFLAGS += $(cflags-y)
88KBUILD_AFLAGS += $(KBUILD_CFLAGS)
89LDFLAGS += $(ldflags-y)
90
91head-y := arch/arc/kernel/head.o
92
93# See arch/arc/Kbuild for content of core part of the kernel
94core-y += arch/arc
95
96# w/o this dtb won't embed into kernel binary
97core-y += arch/arc/boot/dts/
98
99core-$(CONFIG_ARC_PLAT_FPGA_LEGACY) += arch/arc/plat-arcfpga/
100core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
101
102drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
103
104libs-y += arch/arc/lib/ $(LIBGCC)
105
106boot := arch/arc/boot
107
108#default target for make without any arguements.
109KBUILD_IMAGE := bootpImage
110
111all: $(KBUILD_IMAGE)
112bootpImage: vmlinux
113
114boot_targets += uImage uImage.bin uImage.gz
115
116$(boot_targets): vmlinux
117 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
118
119%.dtb %.dtb.S %.dtb.o: scripts
120 $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
121
122dtbs: scripts
123 $(Q)$(MAKE) $(build)=$(boot)/dts dtbs
124
125archclean:
126 $(Q)$(MAKE) $(clean)=$(boot)
127
128# Hacks to enable final link due to absence of link-time branch relexation
129# and gcc choosing optimal(shorter) branches at -O3
130#
131# vineetg Feb 2010: -mlong-calls switched off for overall kernel build
132# However lib/decompress_inflate.o (.init.text) calls
133# zlib_inflate_workspacesize (.text) causing relocation errors.
134# Thus forcing all exten calls in this file to be long calls
135export CFLAGS_decompress_inflate.o = -mmedium-calls
136export CFLAGS_initramfs.o = -mmedium-calls
137ifdef CONFIG_SMP
138export CFLAGS_core.o = -mmedium-calls
139endif