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				:= $(shell echo $(CONFIG_ARC_TUNE_MCPU))
21tune-mcpu-ok 				:= $(call cc-option-yn, $(tune-mcpu))
22ifeq ($(tune-mcpu-ok),y)
23cflags-y				+= $(tune-mcpu)
24else
25# The flag provided by 'CONFIG_ARC_TUNE_MCPU' option isn't known by this compiler
26# (probably the compiler is too old). Use ISA default mcpu flag instead as a safe option.
27$(warning ** WARNING ** CONFIG_ARC_TUNE_MCPU flag '$(tune-mcpu)' is unknown, fallback to '$(tune-mcpu-def-y)')
28cflags-y				+= $(tune-mcpu-def-y)
29endif
30endif
31
32
33ifdef CONFIG_ARC_CURR_IN_REG
34# For a global register definition, make sure it gets passed to every file
35# We had a customer reported bug where some code built in kernel was NOT using
36# any kernel headers, and missing the r25 global register
37# Can't do unconditionally because of recursive include issues
38# due to <linux/thread_info.h>
39LINUXINCLUDE	+=  -include $(srctree)/arch/arc/include/asm/current.h
40endif
41
42cflags-y				+= -fsection-anchors
43
44cflags-$(CONFIG_ARC_HAS_LLSC)		+= -mlock
45cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape
46
47ifdef CONFIG_ISA_ARCV2
48
49ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS
50cflags-y				+= -munaligned-access
51else
52cflags-y				+= -mno-unaligned-access
53endif
54
55ifndef CONFIG_ARC_HAS_LL64
56cflags-y				+= -mno-ll64
57endif
58
59ifndef CONFIG_ARC_HAS_DIV_REM
60cflags-y				+= -mno-div-rem
61endif
62
63endif
64
65cfi := $(call as-instr,.cfi_startproc\n.cfi_endproc,-DARC_DW2_UNWIND_AS_CFI)
66cflags-$(CONFIG_ARC_DW2_UNWIND)		+= -fasynchronous-unwind-tables $(cfi)
67
68# small data is default for elf32 tool-chain. If not usable, disable it
69# This also allows repurposing GP as scratch reg to gcc reg allocator
70disable_small_data := y
71cflags-$(disable_small_data)		+= -mno-sdata -fcall-used-gp
72
73cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= -mbig-endian
74ldflags-$(CONFIG_CPU_BIG_ENDIAN)	+= -EB
75
76LIBGCC	= $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
77
78# Modules with short calls might break for calls into builtin-kernel
79KBUILD_CFLAGS_MODULE	+= -mlong-calls -mno-millicode
80
81# Finally dump eveything into kernel build system
82KBUILD_CFLAGS	+= $(cflags-y)
83KBUILD_AFLAGS	+= $(KBUILD_CFLAGS)
84KBUILD_LDFLAGS	+= $(ldflags-y)
85
86head-y		:= arch/arc/kernel/head.o
87
88# See arch/arc/Kbuild for content of core part of the kernel
89core-y		+= arch/arc/
90
91# w/o this dtb won't embed into kernel binary
92core-y		+= arch/arc/boot/dts/
93
94core-y				+= arch/arc/plat-sim/
95core-$(CONFIG_ARC_PLAT_TB10X)	+= arch/arc/plat-tb10x/
96core-$(CONFIG_ARC_PLAT_AXS10X)	+= arch/arc/plat-axs10x/
97core-$(CONFIG_ARC_SOC_HSDK)	+= arch/arc/plat-hsdk/
98
99libs-y		+= arch/arc/lib/ $(LIBGCC)
100
101boot		:= arch/arc/boot
102
103boot_targets := uImage.bin uImage.gz uImage.lzma
104
105PHONY += $(boot_targets)
106$(boot_targets): vmlinux
107	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
108
109uimage-default-y			:= uImage.bin
110uimage-default-$(CONFIG_KERNEL_GZIP)	:= uImage.gz
111uimage-default-$(CONFIG_KERNEL_LZMA)	:= uImage.lzma
112
113PHONY += uImage
114uImage: $(uimage-default-y)
115	@ln -sf $< $(boot)/uImage
116	@$(kecho) '  Image $(boot)/uImage is ready'
117
118CLEAN_FILES += $(boot)/uImage
119
120archclean:
121	$(Q)$(MAKE) $(clean)=$(boot)
122