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 := $(shell if $(CC) -m64 -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo y; else echo n; fi;)
19 ifeq ($(HAS_BIARCH),y)
21 LD := $(LD) -m elf64ppc
25 CHECK := $(CHECK) -m64 -D__powerpc__=1
27 LDFLAGS := -m elf64ppc
28 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
29 CFLAGS += -msoft-float -pipe -Wno-uninitialized -mminimal-toc \
32 ifeq ($(CONFIG_POWER4_ONLY),y)
33 CFLAGS += $(call check_gcc,-mcpu=power4,)
35 CFLAGS += $(call check_gcc,-mtune=power4,)
38 # Enable unit-at-a-time mode when possible. It shrinks the
39 # kernel considerably.
40 CFLAGS += $(call check_gcc,-funit-at-a-time,)
42 head-y := arch/ppc64/kernel/head.o
44 libs-y += arch/ppc64/lib/
45 core-y += arch/ppc64/kernel/
46 core-y += arch/ppc64/mm/
47 core-$(CONFIG_XMON) += arch/ppc64/xmon/
48 drivers-$(CONFIG_OPROFILE) += arch/ppc64/oprofile/
50 boot := arch/ppc64/boot
52 cp vmlinux arch/ppc64/boot/bzImage
54 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
55 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
56 $(boottarget-y): vmlinux
57 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
59 bootimage-$(CONFIG_PPC_PSERIES) := zImage
60 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
61 BOOTIMAGE := $(bootimage-y)
63 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
68 $(Q)$(MAKE) $(clean)=$(boot)
70 prepare: include/asm-ppc64/offsets.h
72 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
75 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
76 $(call filechk,gen-asm-offsets)
79 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
80 echo ' zImage.initrd- Compressed kernel image with initrd attached,'
81 echo ' sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
82 echo ' (arch/$(ARCH)/boot/zImage.initrd)'
85 CLEAN_FILES += include/asm-ppc64/offsets.h