1 # This file is included by the global makefile so that you can add your own
2 # architecture-specific flags and dependencies. Remember to do have actions
3 # for "archclean" and "archdep" for cleaning up and making dependencies for
6 # This file is subject to the terms and conditions of the GNU General Public
7 # License. See the file "COPYING" in the main directory of this archive
10 # Copyright (C) 1994 by Linus Torvalds
11 # Changes for PPC by Gary Thomas
12 # Rewritten by Cort Dougan and Paul Mackerras
13 # Adjusted for PPC64 by Tom Gall
16 KERNELLOAD := 0xc000000000000000
18 HAS_BIARCH := $(call cc-option-yn, -m64)
19 ifeq ($(HAS_BIARCH),y)
21 LD := $(LD) -m elf64ppc
25 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
28 NM := $(NM) --synthetic
31 CHECKFLAGS += -m64 -D__powerpc__
33 LDFLAGS := -m elf64ppc
34 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
35 CFLAGS += -msoft-float -pipe -mminimal-toc -mtraceback=none \
38 ifeq ($(CONFIG_POWER4_ONLY),y)
39 ifeq ($(CONFIG_ALTIVEC),y)
40 CFLAGS += $(call cc-option,-mcpu=970)
42 CFLAGS += $(call cc-option,-mcpu=power4)
45 CFLAGS += $(call cc-option,-mtune=power4)
48 # Enable unit-at-a-time mode when possible. It shrinks the
49 # kernel considerably.
50 CFLAGS += $(call cc-option,-funit-at-a-time)
52 head-y := arch/ppc64/kernel/head.o
54 libs-y += arch/ppc64/lib/
55 core-y += arch/ppc64/kernel/
56 core-y += arch/ppc64/mm/
57 core-$(CONFIG_XMON) += arch/ppc64/xmon/
58 drivers-$(CONFIG_OPROFILE) += arch/ppc64/oprofile/
60 boot := arch/ppc64/boot
62 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
63 boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
64 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
65 $(boottarget-y): vmlinux
66 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
68 bootimage-$(CONFIG_PPC_PSERIES) := zImage
69 bootimage-$(CONFIG_PPC_MAPLE) := zImage
70 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
71 BOOTIMAGE := $(bootimage-y)
73 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
78 $(Q)$(MAKE) $(clean)=$(boot)
80 prepare: include/asm-ppc64/offsets.h
82 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
85 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
86 $(call filechk,gen-asm-offsets)
89 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
90 echo ' zImage.initrd- Compressed kernel image with initrd attached,'
91 echo ' sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
92 echo ' (arch/$(ARCH)/boot/zImage.initrd)'
95 CLEAN_FILES += include/asm-ppc64/offsets.h