Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
4# this architecture
5#
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
8# for more details.
9#
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
14#
15
16KERNELLOAD := 0xc000000000000000
17
18# Set default 32 bits cross compilers for vdso and boot wrapper
19CROSS32_COMPILE ?=
20
21CROSS32CC := $(CROSS32_COMPILE)gcc
22CROSS32AS := $(CROSS32_COMPILE)as
23CROSS32LD := $(CROSS32_COMPILE)ld
24CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
25
26# If we have a biarch compiler, use it for 32 bits cross compile if
27# CROSS32_COMPILE wasn't explicitely defined, and add proper explicit
28# target type to target compilers
29
30HAS_BIARCH := $(call cc-option-yn, -m64)
31ifeq ($(HAS_BIARCH),y)
32ifeq ($(CROSS32_COMPILE),)
33CROSS32CC := $(CC) -m32
34CROSS32AS := $(AS) -a32
35CROSS32LD := $(LD) -m elf32ppc
36CROSS32OBJCOPY := $(OBJCOPY)
37endif
38override AS += -a64
39override LD += -m elf64ppc
40override CC += -m64
41endif
42
43export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
44
45new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
46
47ifeq ($(new_nm),y)
48NM := $(NM) --synthetic
49
50endif
51
52CHECKFLAGS += -m64 -D__powerpc__ -D__powerpc64__
53
54LDFLAGS := -m elf64ppc
55LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
56CFLAGS += -msoft-float -pipe -mminimal-toc -mtraceback=none \
57 -mcall-aixdesc
58# Temporary hack until we have migrated to asm-powerpc
59CPPFLAGS += -Iarch/$(ARCH)/include
60
61GCC_VERSION := $(call cc-version)
62GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi ;)
63
64ifeq ($(CONFIG_POWER4_ONLY),y)
65ifeq ($(CONFIG_ALTIVEC),y)
66ifeq ($(GCC_BROKEN_VEC),y)
67 CFLAGS += $(call cc-option,-mcpu=970)
68else
69 CFLAGS += $(call cc-option,-mcpu=power4)
70endif
71else
72 CFLAGS += $(call cc-option,-mcpu=power4)
73endif
74else
75 CFLAGS += $(call cc-option,-mtune=power4)
76endif
77
78# Enable unit-at-a-time mode when possible. It shrinks the
79# kernel considerably.
80CFLAGS += $(call cc-option,-funit-at-a-time)
81
82head-y := arch/ppc64/kernel/head.o
83
84libs-y += arch/ppc64/lib/
85core-y += arch/ppc64/kernel/
86core-y += arch/ppc64/mm/
87core-$(CONFIG_XMON) += arch/ppc64/xmon/
88drivers-$(CONFIG_OPROFILE) += arch/ppc64/oprofile/
89
90boot := arch/ppc64/boot
91
92boottargets-$(CONFIG_PPC_PSERIES) += zImage zImage.initrd
93boottargets-$(CONFIG_PPC_PMAC) += zImage.vmode zImage.initrd.vmode
94boottargets-$(CONFIG_PPC_MAPLE) += zImage zImage.initrd
95boottargets-$(CONFIG_PPC_ISERIES) += vmlinux.sminitrd vmlinux.initrd vmlinux.sm
96boottargets-$(CONFIG_PPC_BPA) += zImage zImage.initrd
97$(boottargets-y): vmlinux
98 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
99
100bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
101bootimage-$(CONFIG_PPC_PMAC) := vmlinux
102bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
103bootimage-$(CONFIG_PPC_BPA) := zImage
104bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
105BOOTIMAGE := $(bootimage-y)
106install: vmlinux
107 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
108
109defaultimage-$(CONFIG_PPC_PSERIES) := zImage
110defaultimage-$(CONFIG_PPC_PMAC) := zImage.vmode
111defaultimage-$(CONFIG_PPC_MAPLE) := zImage
112defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
113KBUILD_IMAGE := $(defaultimage-y)
114all: $(KBUILD_IMAGE)
115
116archclean:
117 $(Q)$(MAKE) $(clean)=$(boot)
118 # Temporary hack until we have migrated to asm-powerpc
119 $(Q)rm -rf arch/$(ARCH)/include
120
121
122# Temporary hack until we have migrated to asm-powerpc
123include/asm: arch/$(ARCH)/include/asm
124arch/$(ARCH)/include/asm:
125 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
126 $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
127
128define archhelp
129 echo ' zImage.vmode - Compressed kernel image (arch/$(ARCH)/boot/zImage.vmode)'
130 echo ' zImage.initrd.vmode - Compressed kernel image with initrd attached,'
131 echo ' sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
132 echo ' (arch/$(ARCH)/boot/zImage.initrd.vmode)'
133 echo ' zImage - zImage for pSeries machines'
134 echo ' zImage.initrd - zImage with initrd for pSeries machines'
135endef