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
29CPP = $(CC) -E $(CFLAGS)
30# Temporary hack until we have migrated to asm-powerpc
31LINUXINCLUDE += -Iarch/$(ARCH)/include
32
33CHECKFLAGS += -D__powerpc__
34
35ifndef CONFIG_FSL_BOOKE
36CFLAGS += -mstring
37endif
38
39cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
40cpu-as-$(CONFIG_4xx) += -Wa,-m405
41cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
42cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
43cpu-as-$(CONFIG_E500) += -Wa,-me500
44cpu-as-$(CONFIG_E200) += -Wa,-me200
45
46AFLAGS += $(cpu-as-y)
47CFLAGS += $(cpu-as-y)
48
49# Default to the common case.
50KBUILD_DEFCONFIG := common_defconfig
51
52head-y := arch/ppc/kernel/head.o
53head-$(CONFIG_8xx) := arch/ppc/kernel/head_8xx.o
54head-$(CONFIG_4xx) := arch/ppc/kernel/head_4xx.o
55head-$(CONFIG_44x) := arch/ppc/kernel/head_44x.o
56head-$(CONFIG_FSL_BOOKE) := arch/ppc/kernel/head_fsl_booke.o
57
58head-$(CONFIG_6xx) += arch/ppc/kernel/idle_6xx.o
59head-$(CONFIG_POWER4) += arch/ppc/kernel/idle_power4.o
60head-$(CONFIG_PPC_FPU) += arch/ppc/kernel/fpu.o
61
62core-y += arch/ppc/kernel/ arch/ppc/platforms/ \
63 arch/ppc/mm/ arch/ppc/lib/ arch/ppc/syslib/
64core-$(CONFIG_4xx) += arch/ppc/platforms/4xx/
65core-$(CONFIG_83xx) += arch/ppc/platforms/83xx/
66core-$(CONFIG_85xx) += arch/ppc/platforms/85xx/
67core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/
68core-$(CONFIG_XMON) += arch/ppc/xmon/
69core-$(CONFIG_APUS) += arch/ppc/amiga/
70drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
71drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
72drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
73
74drivers-$(CONFIG_OPROFILE) += arch/ppc/oprofile/
75
76BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
77
78.PHONY: $(BOOT_TARGETS)
79
80all: uImage zImage
81
82CPPFLAGS_vmlinux.lds := -Upowerpc
83
84# All the instructions talk about "make bzImage".
85bzImage: zImage
86
87boot := arch/$(ARCH)/boot
88
89$(BOOT_TARGETS): vmlinux
90 $(Q)$(MAKE) $(build)=$(boot) $@
91
92uImage: vmlinux
93 $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
94
95define archhelp
96 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
97 @echo ' uImage - Create a bootable image for U-Boot / PPCBoot'
98 @echo ' install - Install kernel using'
99 @echo ' (your) ~/bin/installkernel or'
100 @echo ' (distribution) /sbin/installkernel or'
101 @echo ' install to $$(INSTALL_PATH) and run lilo'
102 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs'
103endef
104
105archclean:
106 $(Q)$(MAKE) $(clean)=arch/ppc/boot
107 # Temporary hack until we have migrated to asm-powerpc
108 $(Q)rm -rf arch/$(ARCH)/include
109
110archprepare: checkbin
111
112# Temporary hack until we have migrated to asm-powerpc
113include/asm: arch/$(ARCH)/include/asm
114arch/$(ARCH)/include/asm:
115 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
116 $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
117
118# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
119# to stdout and these checks are run even on install targets.
120TOUT := .tmp_gas_check
121# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
122# instructions.
123# gcc-3.4 and binutils-2.14 are a fatal combination.
124GCC_VERSION := $(call cc-version)
125
126checkbin:
127 @if test "$(GCC_VERSION)" = "0304" ; then \
128 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
129 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
130 echo 'correctly with gcc-3.4 and your version of binutils.'; \
131 echo '*** Please upgrade your binutils or downgrade your gcc'; \
132 false; \
133 fi ; \
134 fi
135 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
136 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
137 echo 'correctly with old versions of binutils.' ; \
138 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
139 false ; \
140 fi
141
142CLEAN_FILES += $(TOUT)
143