xref: /openbmc/linux/arch/parisc/Makefile (revision b4f209e3) 
1#
2# parisc/Makefile
3#
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies.
6#
7# This file is subject to the terms and conditions of the GNU General Public
8# License.  See the file "COPYING" in the main directory of this archive
9# for more details.
10#
11# Copyright (C) 1994 by Linus Torvalds
12# Portions Copyright (C) 1999 The Puffin Group
13#
14# Modified for PA-RISC Linux by Paul Lahaie, Alex deVries,
15# Mike Shaver, Helge Deller and Martin K. Petersen
16#
17
18boot := arch/parisc/boot
19KBUILD_IMAGE := $(boot)/bzImage
20
21NM		= sh $(srctree)/arch/parisc/nm
22CHECKFLAGS	+= -D__hppa__=1
23
24ifdef CONFIG_64BIT
25UTS_MACHINE	:= parisc64
26CHECKFLAGS	+= -D__LP64__=1
27LD_BFD		:= elf64-hppa-linux
28else # 32-bit
29LD_BFD		:= elf32-hppa-linux
30endif
31
32# select defconfig based on actual architecture
33ifeq ($(ARCH),parisc64)
34	KBUILD_DEFCONFIG := generic-64bit_defconfig
35	CC_ARCHES := hppa64
36else
37	KBUILD_DEFCONFIG := generic-32bit_defconfig
38	CC_ARCHES := hppa hppa2.0 hppa1.1
39endif
40
41export LD_BFD
42
43# Set default 32 bits cross compilers for vdso
44CC_ARCHES_32 = hppa hppa2.0 hppa1.1
45CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux
46CROSS32_COMPILE := $(call cc-cross-prefix, \
47	$(foreach a,$(CC_ARCHES_32), \
48	$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
49CROSS32CC := $(CROSS32_COMPILE)gcc
50export CROSS32CC
51
52# Set default cross compiler for kernel build
53ifdef cross_compiling
54	ifeq ($(CROSS_COMPILE),)
55		CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux
56		CROSS_COMPILE := $(call cc-cross-prefix, \
57			$(foreach a,$(CC_ARCHES), \
58			$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
59	endif
60endif
61
62ifdef CONFIG_DYNAMIC_FTRACE
63ifdef CONFIG_64BIT
64NOP_COUNT := 8
65else
66NOP_COUNT := 5
67endif
68
69export CC_USING_RECORD_MCOUNT:=1
70export CC_USING_PATCHABLE_FUNCTION_ENTRY:=1
71
72KBUILD_AFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1
73KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 \
74		 -DFTRACE_PATCHABLE_FUNCTION_SIZE=$(NOP_COUNT)
75
76CC_FLAGS_FTRACE := -fpatchable-function-entry=$(NOP_COUNT),$(shell echo $$(($(NOP_COUNT)-1)))
77endif
78
79OBJCOPY_FLAGS =-O binary -R .note -R .comment -S
80
81cflags-y	:= -pipe
82
83# These flags should be implied by an hppa-linux configuration, but they
84# are not in gcc 3.2.
85cflags-y	+= -mno-space-regs
86
87# -mfast-indirect-calls is only relevant for 32-bit kernels.
88ifndef CONFIG_64BIT
89cflags-y	+= -mfast-indirect-calls
90endif
91
92# Currently we save and restore fpregs on all kernel entry/interruption paths.
93# If that gets optimized, we might need to disable the use of fpregs in the
94# kernel.
95cflags-y	+= -mdisable-fpregs
96
97# Use long jumps instead of long branches (needed if your linker fails to
98# link a too big vmlinux executable). Not enabled for building modules.
99ifdef CONFIG_MLONGCALLS
100KBUILD_CFLAGS_KERNEL += -mlong-calls
101endif
102
103# Without this, "ld -r" results in .text sections that are too big (> 0x40000)
104# for branches to reach stubs. And multiple .text sections trigger a warning
105# when creating the sysfs module information section.
106ifndef CONFIG_64BIT
107KBUILD_CFLAGS_MODULE += -ffunction-sections
108endif
109
110# select which processor to optimise for
111cflags-$(CONFIG_PA7000)		+= -march=1.1 -mschedule=7100
112cflags-$(CONFIG_PA7200)		+= -march=1.1 -mschedule=7200
113cflags-$(CONFIG_PA7100LC)	+= -march=1.1 -mschedule=7100LC
114cflags-$(CONFIG_PA7300LC)	+= -march=1.1 -mschedule=7300
115cflags-$(CONFIG_PA8X00)		+= -march=2.0 -mschedule=8000
116
117head-y			:= arch/parisc/kernel/head.o
118
119KBUILD_CFLAGS	+= $(cflags-y)
120LIBGCC		:= $(shell $(CC) -print-libgcc-file-name)
121export LIBGCC
122
123libs-y	+= arch/parisc/lib/ $(LIBGCC)
124
125boot	:= arch/parisc/boot
126
127PALO := $(shell if (which palo 2>&1); then : ; \
128	elif [ -x /sbin/palo ]; then echo /sbin/palo; \
129	fi)
130
131PALOCONF := $(shell if [ -f $(srctree)/palo.conf ]; then echo $(srctree)/palo.conf; \
132	else echo $(objtree)/palo.conf; \
133	fi)
134
135palo lifimage: vmlinuz
136	@if test ! -x "$(PALO)"; then \
137		echo 'ERROR: Please install palo first (apt-get install palo)';\
138		echo 'or build it from source and install it somewhere in your $$PATH';\
139		false; \
140	fi
141	@if test ! -f "$(PALOCONF)"; then \
142		cp $(srctree)/arch/parisc/defpalo.conf $(objtree)/palo.conf; \
143		echo 'A generic palo config file ($(objree)/palo.conf) has been created for you.'; \
144		echo 'You should check it and re-run "make palo".'; \
145		echo 'WARNING: the "lifimage" file is now placed in this directory by default!'; \
146		false; \
147	fi
148	$(PALO) -f $(PALOCONF)
149
150BOOT_TARGETS    = zImage Image palo lifimage
151INSTALL_TARGETS = zinstall install
152
153PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
154
155# Default kernel to build
156all: bzImage
157
158zImage: vmlinuz
159Image: vmlinux
160
161bzImage: vmlinux
162	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
163
164vmlinuz: bzImage
165	$(OBJCOPY) $(boot)/bzImage $@
166
167ifeq ($(KBUILD_EXTMOD),)
168# We need to generate vdso-offsets.h before compiling certain files in kernel/.
169# In order to do that, we should use the archprepare target, but we can't since
170# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
171# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
172# Therefore we need to generate the header after prepare0 has been made, hence
173# this hack.
174prepare: vdso_prepare
175vdso_prepare: prepare0
176	$(if $(CONFIG_64BIT),$(Q)$(MAKE) \
177		$(build)=arch/parisc/kernel/vdso64 include/generated/vdso64-offsets.h)
178	$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 include/generated/vdso32-offsets.h
179endif
180
181PHONY += vdso_install
182
183vdso_install:
184	$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso $@
185	$(if $(CONFIG_COMPAT_VDSO), \
186		$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 $@)
187install:
188	$(CONFIG_SHELL) $(srctree)/arch/parisc/install.sh \
189			$(KERNELRELEASE) vmlinux System.map "$(INSTALL_PATH)"
190zinstall:
191	$(CONFIG_SHELL) $(srctree)/arch/parisc/install.sh \
192			$(KERNELRELEASE) vmlinuz System.map "$(INSTALL_PATH)"
193
194CLEAN_FILES	+= lifimage
195MRPROPER_FILES	+= palo.conf
196
197define archhelp
198	@echo  '* vmlinux	- Uncompressed kernel image (./vmlinux)'
199	@echo  '  vmlinuz	- Compressed kernel image (./vmlinuz)'
200	@echo  '  palo		- Bootable image (./lifimage)'
201	@echo  '  install	- Install uncompressed vmlinux kernel using'
202	@echo  '		  (your) ~/bin/$(INSTALLKERNEL) or'
203	@echo  '		  (distribution) /sbin/$(INSTALLKERNEL) or'
204	@echo  '		  copy to $$(INSTALL_PATH)'
205	@echo  '  zinstall	- Install compressed vmlinuz kernel'
206endef
207
208archheaders:
209	$(Q)$(MAKE) $(build)=arch/parisc/kernel/syscalls all
210