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.
3#
4# This file is subject to the terms and conditions of the GNU General Public
5# License. See the file "COPYING" in the main directory of this archive
6# for more details.
7#
8# Copyright (C) 1994 by Linus Torvalds
9# Changes for PPC by Gary Thomas
10# Rewritten by Cort Dougan and Paul Mackerras
11#
12
13# This must match PAGE_OFFSET in include/asm-ppc/page.h.
14KERNELLOAD := $(CONFIG_KERNEL_START)
15
16HAS_BIARCH := $(call cc-option-yn, -m32)
17ifeq ($(HAS_BIARCH),y)
18AS := $(AS) -a32
19LD := $(LD) -m elf32ppc
20CC := $(CC) -m32
21endif
22
23LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
24# The -Iarch/$(ARCH)/include is temporary while we are merging
25CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
26AFLAGS += -Iarch/$(ARCH)
27CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \
28 -ffixed-r2 -mmultiple
29
30# No AltiVec instruction when building kernel
31CFLAGS += $(call cc-option, -mno-altivec)
32
33CPP = $(CC) -E $(CFLAGS)
34# Temporary hack until we have migrated to asm-powerpc
35LINUXINCLUDE += -Iarch/$(ARCH)/include
36
37CHECKFLAGS += -D__powerpc__
38
39ifndef CONFIG_FSL_BOOKE
40CFLAGS += -mstring
41endif
42
43cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
44cpu-as-$(CONFIG_4xx) += -Wa,-m405
45cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
46cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
47cpu-as-$(CONFIG_E500) += -Wa,-me500
48cpu-as-$(CONFIG_E200) += -Wa,-me200
49
50AFLAGS += $(cpu-as-y)
51CFLAGS += $(cpu-as-y)
52
53# Default to the common case.
54KBUILD_DEFCONFIG := common_defconfig
55
56head-y := arch/ppc/kernel/head.o
57head-$(CONFIG_8xx) := arch/ppc/kernel/head_8xx.o
58head-$(CONFIG_4xx) := arch/ppc/kernel/head_4xx.o
59head-$(CONFIG_44x) := arch/ppc/kernel/head_44x.o
60head-$(CONFIG_FSL_BOOKE) := arch/ppc/kernel/head_fsl_booke.o
61
62head-$(CONFIG_6xx) += arch/ppc/kernel/idle_6xx.o
63head-$(CONFIG_POWER4) += arch/ppc/kernel/idle_power4.o
64head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
65
66core-y += arch/ppc/kernel/ arch/powerpc/kernel/ \
67 arch/ppc/platforms/ \
68 arch/ppc/mm/ arch/ppc/lib/ \
69 arch/ppc/syslib/ arch/powerpc/sysdev/ \
70 arch/powerpc/lib/
71core-$(CONFIG_4xx) += arch/ppc/platforms/4xx/
72core-$(CONFIG_83xx) += arch/ppc/platforms/83xx/
73core-$(CONFIG_85xx) += arch/ppc/platforms/85xx/
74core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/
75core-$(CONFIG_XMON) += arch/ppc/xmon/
76core-$(CONFIG_APUS) += arch/ppc/amiga/
77drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
78drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
79drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
80
81drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
82
83BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
84
85.PHONY: $(BOOT_TARGETS)
86
87all: uImage zImage
88
89CPPFLAGS_vmlinux.lds := -Upowerpc
90
91# All the instructions talk about "make bzImage".
92bzImage: zImage
93
94boot := arch/$(ARCH)/boot
95
96$(BOOT_TARGETS): vmlinux
97 $(Q)$(MAKE) $(build)=$(boot) $@
98
99uImage: vmlinux
100 $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
101
102define archhelp
103 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
104 @echo ' uImage - Create a bootable image for U-Boot / PPCBoot'
105 @echo ' install - Install kernel using'
106 @echo ' (your) ~/bin/installkernel or'
107 @echo ' (distribution) /sbin/installkernel or'
108 @echo ' install to $$(INSTALL_PATH) and run lilo'
109 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs'
110endef
111
112archclean:
113 $(Q)$(MAKE) $(clean)=arch/ppc/boot
114 # Temporary hack until we have migrated to asm-powerpc
115 $(Q)rm -rf arch/$(ARCH)/include
116
117archprepare: checkbin
118
119# Temporary hack until we have migrated to asm-powerpc
120include/asm: arch/$(ARCH)/include/asm
121arch/$(ARCH)/include/asm:
122 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
123 $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
124
125# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
126# to stdout and these checks are run even on install targets.
127TOUT := .tmp_gas_check
128# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
129# instructions.
130# gcc-3.4 and binutils-2.14 are a fatal combination.
131
132checkbin:
133 @if test "$(call cc-version)" = "0304" ; then \
134 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
135 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
136 echo 'correctly with gcc-3.4 and your version of binutils.'; \
137 echo '*** Please upgrade your binutils or downgrade your gcc'; \
138 false; \
139 fi ; \
140 fi
141 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
142 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
143 echo 'correctly with old versions of binutils.' ; \
144 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
145 false ; \
146 fi
147
148CLEAN_FILES += $(TOUT)
149