xref: /openbmc/linux/arch/xtensa/Makefile (revision ba61bb17) 
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_XTFPGA)	:= xtfpga
39
40PLATFORM = $(platform-y)
41export PLATFORM
42
43# temporarily until string.h is fixed
44KBUILD_CFLAGS += -ffreestanding -D__linux__
45KBUILD_CFLAGS += -pipe -mlongcalls -mtext-section-literals
46KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
47KBUILD_CFLAGS += $(call cc-option,-mno-serialize-volatile,)
48
49KBUILD_AFLAGS += -mlongcalls -mtext-section-literals
50
51ifneq ($(CONFIG_LD_NO_RELAX),)
52LDFLAGS := --no-relax
53endif
54
55ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
56CHECKFLAGS += -D__XTENSA_EB__
57KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
58endif
59ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
60CHECKFLAGS += -D__XTENSA_EL__
61KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
62endif
63
64vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
65plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
66
67ifeq ($(KBUILD_SRC),)
68KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
69else
70KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
71endif
72
73KBUILD_DEFCONFIG := iss_defconfig
74
75# Only build variant and/or platform if it includes a Makefile
76
77buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
78buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
79
80# Find libgcc.a
81
82LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
83
84head-y		:= arch/xtensa/kernel/head.o
85core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
86core-y		+= $(buildvar) $(buildplf)
87
88libs-y		+= arch/xtensa/lib/ $(LIBGCC)
89drivers-$(CONFIG_OPROFILE)	+= arch/xtensa/oprofile/
90
91ifneq ($(CONFIG_BUILTIN_DTB),"")
92core-$(CONFIG_OF) += arch/xtensa/boot/dts/
93endif
94
95boot		:= arch/xtensa/boot
96
97all Image zImage uImage: vmlinux
98	$(Q)$(MAKE) $(build)=$(boot) $@
99
100%.dtb:
101	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
102
103dtbs: scripts
104	$(Q)$(MAKE) $(build)=$(boot)/dts
105
106define archhelp
107  @echo '* Image       - Kernel ELF image with reset vector'
108  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
109  @echo '* uImage      - U-Boot wrapped image'
110  @echo '  dtbs        - Build device tree blobs for enabled boards'
111endef
112