blob: 99dbea8c5c50d63952a71187589fe673db42e35e [file] [log] [blame]
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# 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#
14
Paul Mackerras14cf11a2005-09-26 16:04:21 +100015HAS_BIARCH := $(call cc-option-yn, -m32)
16
Paul Mackerras14cf11a2005-09-26 16:04:21 +100017# Set default 32 bits cross compilers for vdso and boot wrapper
18CROSS32_COMPILE ?=
19
20CROSS32CC := $(CROSS32_COMPILE)gcc
21CROSS32AS := $(CROSS32_COMPILE)as
22CROSS32LD := $(CROSS32_COMPILE)ld
23CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
24
25ifeq ($(HAS_BIARCH),y)
26ifeq ($(CROSS32_COMPILE),)
27CROSS32CC := $(CC) -m32
28CROSS32AS := $(AS) -a32
29CROSS32LD := $(LD) -m elf32ppc
30CROSS32OBJCOPY := $(OBJCOPY)
31endif
32endif
33
34export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
35
Paul Mackerras94b212c2005-11-16 13:38:21 +110036ifeq ($(CONFIG_PPC64),y)
37OLDARCH := ppc64
38SZ := 64
39
Paul Mackerras14cf11a2005-09-26 16:04:21 +100040new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
41
42ifeq ($(new_nm),y)
43NM := $(NM) --synthetic
44endif
45
46else
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100047OLDARCH := ppc
Paul Mackerras14cf11a2005-09-26 16:04:21 +100048SZ := 32
49endif
50
Stephen Rothwell190554d2005-10-13 16:14:15 +100051UTS_MACHINE := $(OLDARCH)
52
Paul Mackerras14cf11a2005-09-26 16:04:21 +100053ifeq ($(HAS_BIARCH),y)
54override AS += -a$(SZ)
55override LD += -m elf$(SZ)ppc
56override CC += -m$(SZ)
57endif
58
Michael Ellermane19e4ab2005-11-03 16:03:06 +110059LDFLAGS_vmlinux := -Bstatic
Paul Mackerras14cf11a2005-09-26 16:04:21 +100060
61# The -Iarch/$(ARCH)/include is temporary while we are merging
62CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
63AFLAGS += -Iarch/$(ARCH)
64CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100065CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
66CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
67CFLAGS += $(CFLAGS-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100068CPP = $(CC) -E $(CFLAGS)
69# Temporary hack until we have migrated to asm-powerpc
70LINUXINCLUDE += -Iarch/$(ARCH)/include
71
72CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
73
74ifeq ($(CONFIG_PPC64),y)
75GCC_VERSION := $(call cc-version)
76GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi)
77
78ifeq ($(CONFIG_POWER4_ONLY),y)
79ifeq ($(CONFIG_ALTIVEC),y)
80ifeq ($(GCC_BROKEN_VEC),y)
81 CFLAGS += $(call cc-option,-mcpu=970)
82else
83 CFLAGS += $(call cc-option,-mcpu=power4)
84endif
85else
86 CFLAGS += $(call cc-option,-mcpu=power4)
87endif
88else
89 CFLAGS += $(call cc-option,-mtune=power4)
90endif
91endif
92
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +100093# No AltiVec instruction when building kernel
94CFLAGS += $(call cc-option,-mno-altivec)
95
Paul Mackerras14cf11a2005-09-26 16:04:21 +100096# Enable unit-at-a-time mode when possible. It shrinks the
97# kernel considerably.
98CFLAGS += $(call cc-option,-funit-at-a-time)
99
100ifndef CONFIG_FSL_BOOKE
101CFLAGS += -mstring
102endif
103
104cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
105cpu-as-$(CONFIG_4xx) += -Wa,-m405
106cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
107cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
108cpu-as-$(CONFIG_E500) += -Wa,-me500
109cpu-as-$(CONFIG_E200) += -Wa,-me200
110
111AFLAGS += $(cpu-as-y)
112CFLAGS += $(cpu-as-y)
113
114# Default to the common case.
115KBUILD_DEFCONFIG := common_defconfig
116
Paul Mackerras70d64ce2005-10-10 21:52:43 +1000117head-y := arch/powerpc/kernel/head_32.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000118head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
119head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
120head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
121head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
122head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
123
Paul Mackerras9994a332005-10-10 22:36:14 +1000124head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000125head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000126
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000127core-y += arch/powerpc/kernel/ \
128 arch/$(OLDARCH)/kernel/ \
129 arch/powerpc/mm/ \
130 arch/powerpc/lib/ \
131 arch/powerpc/sysdev/ \
132 arch/powerpc/platforms/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000133core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000134core-$(CONFIG_XMON) += arch/powerpc/xmon/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000135core-$(CONFIG_APUS) += arch/ppc/amiga/
136drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
137drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
138drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
139
140drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
141
Paul Mackerras94b212c2005-11-16 13:38:21 +1100142defaultimage-$(CONFIG_PPC32) := zImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000143defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000144defaultimage-$(CONFIG_PPC_PSERIES) := zImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000145KBUILD_IMAGE := $(defaultimage-y)
146all: $(KBUILD_IMAGE)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000147
148CPPFLAGS_vmlinux.lds := -Upowerpc
149
150# All the instructions talk about "make bzImage".
151bzImage: zImage
152
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000153BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
154
155.PHONY: $(BOOT_TARGETS)
156
Paul Mackerras94b212c2005-11-16 13:38:21 +1100157boot := arch/$(ARCH)/boot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000158
159$(BOOT_TARGETS): vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000160 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000161
162define archhelp
Paul Mackerras94b212c2005-11-16 13:38:21 +1100163 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000164 @echo ' install - Install kernel using'
165 @echo ' (your) ~/bin/installkernel or'
166 @echo ' (distribution) /sbin/installkernel or'
167 @echo ' install to $$(INSTALL_PATH) and run lilo'
168 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs'
169endef
170
171archclean:
Paul Mackerrasa3a9e992005-09-28 15:53:36 +1000172 $(Q)$(MAKE) $(clean)=$(boot)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000173 $(Q)rm -rf arch/$(ARCH)/include
174
175archprepare: checkbin
176
177# Temporary hack until we have migrated to asm-powerpc
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000178include/asm: arch/$(ARCH)/include/asm
Benjamin Herrenschmidt50092b22005-11-14 11:02:20 +1100179arch/$(ARCH)/include/asm: FORCE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000180 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +1000181 $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000182
183# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
184# to stdout and these checks are run even on install targets.
185TOUT := .tmp_gas_check
186# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
187# instructions.
188# gcc-3.4 and binutils-2.14 are a fatal combination.
189GCC_VERSION := $(call cc-version)
190
191checkbin:
192 @if test "$(GCC_VERSION)" = "0304" ; then \
193 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
194 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
195 echo 'correctly with gcc-3.4 and your version of binutils.'; \
196 echo '*** Please upgrade your binutils or downgrade your gcc'; \
197 false; \
198 fi ; \
199 fi
200 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
201 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
202 echo 'correctly with old versions of binutils.' ; \
203 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
204 false ; \
205 fi
206
207CLEAN_FILES += $(TOUT)
208