xref: /openbmc/linux/arch/xtensa/Makefile (revision 64c70b1c) 
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_LINUX_CUSTOM)	:= custom
18
19VARIANT = $(variant-y)
20export VARIANT
21
22# Platform configuration
23
24platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
25platform-$(CONFIG_XTENSA_PLATFORM_ISS)		:= iss
26
27PLATFORM = $(platform-y)
28export PLATFORM
29
30CFLAGS		+= -pipe -mlongcalls
31
32KBUILD_DEFCONFIG := iss_defconfig
33
34# ramdisk/initrd support
35# You need a compressed ramdisk image, named ramdisk.gz in
36# arch/xtensa/boot/ramdisk
37
38core-$(CONFIG_EMBEDDED_RAMDISK)	+= arch/xtensa/boot/ramdisk/
39
40# Test for cross compiling
41
42ifneq ($(VARIANT),)
43  COMPILE_ARCH = $(shell uname -m)
44
45  ifneq ($(COMPILE_ARCH), xtensa)
46    ifndef CROSS_COMPILE
47      CROSS_COMPILE = xtensa_$(VARIANT)-
48    endif
49  endif
50endif
51
52#
53
54LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
55
56head-y		:= arch/xtensa/kernel/head.o
57core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
58ifneq ($(PLATFORM),)
59core-y		+= arch/xtensa/platform-$(PLATFORM)/
60endif
61libs-y		+= arch/xtensa/lib/ $(LIBGCC)
62
63boot		:= arch/xtensa/boot
64
65archinc		:= include/asm-xtensa
66
67archprepare: $(archinc)/.platform
68
69# Update processor variant and platform symlinks if something which affects
70# them changed.
71
72$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
73	@echo '  SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
74	$(Q)mkdir -p $(archinc)
75	$(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
76	@echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
77	$(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
78	@touch $@
79
80
81all: zImage
82
83bzImage : zImage
84
85zImage zImage.initrd: vmlinux
86	$(Q)$(MAKE) $(build)=$(boot) $@
87
88CLEAN_FILES	+= arch/xtensa/vmlinux.lds                      \
89		   $(archinc)/platform $(archinc)/variant	\
90		   $(archinc)/.platform
91
92define archhelp
93  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
94endef
95
96