xref: /openbmc/linux/arch/xtensa/Makefile (revision e1f7c9ee) 
1#
2# This file is subject to the terms and conditions of the GNU General Public
3# License.  See the file "COPYING" in the main directory of this archive
4# for more details.
5#
6# Copyright (C) 2001 - 2005  Tensilica Inc.
7# Copyright (C) 2014 Cadence Design Systems Inc.
8#
9# This file is included by the global makefile so that you can add your own
10# architecture-specific flags and dependencies. Remember to do have actions
11# for "archclean" and "archdep" for cleaning up and making dependencies for
12# this architecture
13
14# Core configuration.
15# (Use VAR=<xtensa_config> to use another default compiler.)
16
17variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
18
19VARIANT = $(variant-y)
20export VARIANT
21
22# Test for cross compiling
23
24ifneq ($(VARIANT),)
25  COMPILE_ARCH = $(shell uname -m)
26
27  ifneq ($(COMPILE_ARCH), xtensa)
28    ifndef CROSS_COMPILE
29      CROSS_COMPILE = xtensa_$(VARIANT)-
30    endif
31  endif
32endif
33
34# Platform configuration
35
36platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
37platform-$(CONFIG_XTENSA_PLATFORM_ISS)		:= iss
38platform-$(CONFIG_XTENSA_PLATFORM_S6105)	:= s6105
39platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)	:= xtfpga
40
41PLATFORM = $(platform-y)
42export PLATFORM
43
44# temporarily until string.h is fixed
45KBUILD_CFLAGS += -ffreestanding -D__linux__
46
47KBUILD_CFLAGS += -pipe -mlongcalls
48
49KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
50
51ifneq ($(CONFIG_LD_NO_RELAX),)
52LDFLAGS := --no-relax
53endif
54
55ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
56CHECKFLAGS += -D__XTENSA_EB__
57endif
58ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
59CHECKFLAGS += -D__XTENSA_EL__
60endif
61
62vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
63plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
64
65ifeq ($(KBUILD_SRC),)
66KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
67else
68KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
69endif
70
71KBUILD_DEFCONFIG := iss_defconfig
72
73# Only build variant and/or platform if it includes a Makefile
74
75buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
76buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
77
78# Find libgcc.a
79
80LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
81
82head-y		:= arch/xtensa/kernel/head.o
83core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
84core-y		+= $(buildvar) $(buildplf)
85
86libs-y		+= arch/xtensa/lib/ $(LIBGCC)
87drivers-$(CONFIG_OPROFILE)	+= arch/xtensa/oprofile/
88
89ifneq ($(CONFIG_BUILTIN_DTB),"")
90core-$(CONFIG_OF) += arch/xtensa/boot/dts/
91endif
92
93boot		:= arch/xtensa/boot
94
95all: zImage
96
97bzImage : zImage
98
99zImage: vmlinux
100	$(Q)$(MAKE) $(build)=$(boot) $@
101
102%.dtb:
103	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
104
105define archhelp
106  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
107endef
108