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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 CPU=<xtensa_config> to use another default compiler.)
15
16 cpu-$(CONFIG_XTENSA_CPU_LINUX_BE) := linux_be
17 cpu-$(CONFIG_XTENSA_CPU_LINUX_CUSTOM) := linux_custom
18
19 CPU = $(cpu-y)
20 export CPU
21
22 # Platform configuration
23
24 platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
25 platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
26
27 PLATFORM = $(platform-y)
28 export PLATFORM
29
30 CPPFLAGS += $(if $(KBUILD_SRC),-I$(srctree)/include/asm-xtensa/)
31 CPPFLAGS += -Iinclude/asm
32 CFLAGS += -pipe -mlongcalls
33
34 KBUILD_DEFCONFIG := iss_defconfig
35
36 # ramdisk/initrd support
37 # You need a compressed ramdisk image, named ramdisk.gz in
38 # arch/xtensa/boot/ramdisk
39
40 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
41
42 # Test for cross compiling
43
44 ifneq ($(CPU),)
45 COMPILE_ARCH = $(shell uname -m)
46
47 ifneq ($(COMPILE_ARCH), xtensa)
48 ifndef CROSS_COMPILE
49 CROSS_COMPILE = xtensa_$(CPU)-
50 endif
51 endif
52 endif
53
54 #
55
56 LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
57
58 head-y := arch/xtensa/kernel/head.o
59 core-y += arch/xtensa/kernel/ arch/xtensa/mm/
60 ifneq ($(PLATFORM),)
61 core-y += arch/xtensa/platform-$(PLATFORM)/
62 endif
63 libs-y += arch/xtensa/lib/ $(LIBGCC)
64
65 boot := arch/xtensa/boot
66
67 archinc := include/asm-xtensa
68
69 prepare: $(archinc)/.platform
70
71 # Update machine cpu and platform symlinks if something which affects
72 # them changed.
73
74 $(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/MARKER
75 @echo ' SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)'
76 $(Q)mkdir -p $(archinc)
77 $(Q)mkdir -p $(archinc)/xtensa
78 $(Q)ln -fsn $(srctree)/$(archinc)/xtensa/config-$(CPU) $(archinc)/xtensa/config
79 @echo ' SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
80 $(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
81 @touch $@
82
83
84 all: zImage
85
86 bzImage : zImage
87
88 zImage zImage.initrd: vmlinux
89 $(Q)$(MAKE) $(build)=$(boot) $@
90
91 CLEAN_FILES += arch/xtensa/vmlinux.lds \
92 $(archinc)/platform $(archinc)/xtensa/config \
93 $(archinc)/.platform
94
95 define archhelp
96 @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
97 endef
98