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
23 CHECK := $(CHECK) -m64
26 LDFLAGS := -m elf64ppc
27 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
28 CFLAGS += -msoft-float -pipe -Wno-uninitialized -mminimal-toc \
31 ifeq ($(CONFIG_POWER4_ONLY),y)
32 CFLAGS += $(call check_gcc,-mcpu=power4,)
34 CFLAGS += $(call check_gcc,-mtune=power4,)
37 # Enable unit-at-a-time mode when possible. It shrinks the
38 # kernel considerably.
39 CFLAGS += $(call check_gcc,-funit-at-a-time,)
41 head-y := arch/ppc64/kernel/head.o
43 libs-y += arch/ppc64/lib/
44 core-y += arch/ppc64/kernel/
45 core-y += arch/ppc64/mm/
46 core-$(CONFIG_XMON) += arch/ppc64/xmon/
47 drivers-$(CONFIG_OPROFILE) += arch/ppc64/oprofile/
49 boot := arch/ppc64/boot
51 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
52 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
53 $(boottarget-y): vmlinux
54 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
56 bootimage-$(CONFIG_PPC_PSERIES) := zImage
57 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
58 BOOTIMAGE := $(bootimage-y)
60 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
65 $(Q)$(MAKE) $(clean)=$(boot)
67 prepare: include/asm-ppc64/offsets.h
69 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
72 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
73 $(call filechk,gen-asm-offsets)
76 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
77 echo ' zImage.initrd- Compressed kernel image with initrd attached,'
78 echo ' sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
79 echo ' (arch/$(ARCH)/boot/zImage.initrd)'
82 CLEAN_FILES += include/asm-ppc64/offsets.h