xref: /openbmc/linux/arch/xtensa/Makefile (revision 05bcf503)
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#
8# This file is included by the global makefile so that you can add your own
9# architecture-specific flags and dependencies. Remember to do have actions
10# for "archclean" and "archdep" for cleaning up and making dependencies for
11# this architecture
12
13# Core configuration.
14# (Use VAR=<xtensa_config> to use another default compiler.)
15
16variant-$(CONFIG_XTENSA_VARIANT_FSF)		:= fsf
17variant-$(CONFIG_XTENSA_VARIANT_DC232B)		:= dc232b
18variant-$(CONFIG_XTENSA_VARIANT_S6000)		:= s6000
19variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)	:= custom
20
21VARIANT = $(variant-y)
22export VARIANT
23
24# Test for cross compiling
25
26ifneq ($(VARIANT),)
27  COMPILE_ARCH = $(shell uname -m)
28
29  ifneq ($(COMPILE_ARCH), xtensa)
30    ifndef CROSS_COMPILE
31      CROSS_COMPILE = xtensa_$(VARIANT)-
32    endif
33  endif
34endif
35
36# Platform configuration
37
38platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
39platform-$(CONFIG_XTENSA_PLATFORM_ISS)		:= iss
40platform-$(CONFIG_XTENSA_PLATFORM_S6105)	:= s6105
41
42PLATFORM = $(platform-y)
43export PLATFORM
44
45# temporarily until string.h is fixed
46KBUILD_CFLAGS += -ffreestanding -D__linux__
47
48KBUILD_CFLAGS += -pipe -mlongcalls
49
50KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)
51
52vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
53plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))
54
55ifeq ($(KBUILD_SRC),)
56KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
57else
58KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
59endif
60
61KBUILD_DEFCONFIG := iss_defconfig
62
63# Only build variant and/or platform if it includes a Makefile
64
65buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
66buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
67
68# Find libgcc.a
69
70LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
71
72head-y		:= arch/xtensa/kernel/head.o
73core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
74core-y		+= $(buildvar) $(buildplf)
75
76libs-y		+= arch/xtensa/lib/ $(LIBGCC)
77
78boot		:= arch/xtensa/boot
79
80all: zImage
81
82bzImage : zImage
83
84zImage: vmlinux
85	$(Q)$(MAKE) $(build)=$(boot) $@
86
87define archhelp
88  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
89endef
90
91