xref: /openbmc/linux/arch/parisc/Makefile (revision 25c2e591) 
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 := $(boot)/bzImage
20
21CHECKFLAGS	+= -D__hppa__=1
22
23ifdef CONFIG_64BIT
24UTS_MACHINE	:= parisc64
25CHECKFLAGS	+= -D__LP64__=1
26LD_BFD		:= elf64-hppa-linux
27else # 32-bit
28LD_BFD		:= elf32-hppa-linux
29endif
30
31# select defconfig based on actual architecture
32ifeq ($(ARCH),parisc64)
33	KBUILD_DEFCONFIG := generic-64bit_defconfig
34	CC_ARCHES := hppa64
35else
36	KBUILD_DEFCONFIG := generic-32bit_defconfig
37	CC_ARCHES := hppa hppa2.0 hppa1.1
38endif
39
40export LD_BFD
41
42# Set default 32 bits cross compilers for vdso
43CC_ARCHES_32 = hppa hppa2.0 hppa1.1
44CC_SUFFIXES  = linux linux-gnu unknown-linux-gnu suse-linux
45CROSS32_COMPILE := $(call cc-cross-prefix, \
46	$(foreach a,$(CC_ARCHES_32), \
47	$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
48CROSS32CC := $(CROSS32_COMPILE)gcc
49export CROSS32CC
50
51# Set default cross compiler for kernel build
52ifdef cross_compiling
53	ifeq ($(CROSS_COMPILE),)
54		CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux
55		CROSS_COMPILE := $(call cc-cross-prefix, \
56			$(foreach a,$(CC_ARCHES), \
57			$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
58	endif
59endif
60
61ifdef CONFIG_DYNAMIC_FTRACE
62ifdef CONFIG_64BIT
63NOP_COUNT := 8
64else
65NOP_COUNT := 5
66endif
67
68export CC_USING_RECORD_MCOUNT:=1
69export CC_USING_PATCHABLE_FUNCTION_ENTRY:=1
70
71KBUILD_AFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1
72KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 \
73		 -DFTRACE_PATCHABLE_FUNCTION_SIZE=$(NOP_COUNT)
74
75CC_FLAGS_FTRACE := -fpatchable-function-entry=$(NOP_COUNT),$(shell echo $$(($(NOP_COUNT)-1)))
76endif
77
78OBJCOPY_FLAGS =-O binary -R .note -R .comment -S
79
80cflags-y	:= -pipe
81
82# These flags should be implied by an hppa-linux configuration, but they
83# are not in gcc 3.2.
84cflags-y	+= -mno-space-regs
85
86# -mfast-indirect-calls is only relevant for 32-bit kernels.
87ifndef CONFIG_64BIT
88cflags-y	+= -mfast-indirect-calls
89endif
90
91# Currently we save and restore fpregs on all kernel entry/interruption paths.
92# If that gets optimized, we might need to disable the use of fpregs in the
93# kernel.
94cflags-y	+= -mdisable-fpregs
95
96# Use long jumps instead of long branches (needed if your linker fails to
97# link a too big vmlinux executable). Not enabled for building modules.
98ifdef CONFIG_MLONGCALLS
99KBUILD_CFLAGS_KERNEL += -mlong-calls
100endif
101
102# Without this, "ld -r" results in .text sections that are too big (> 0x40000)
103# for branches to reach stubs. And multiple .text sections trigger a warning
104# when creating the sysfs module information section.
105ifndef CONFIG_64BIT
106KBUILD_CFLAGS_MODULE += -ffunction-sections
107endif
108
109# select which processor to optimise for
110cflags-$(CONFIG_PA7000)		+= -march=1.1 -mschedule=7100
111cflags-$(CONFIG_PA7200)		+= -march=1.1 -mschedule=7200
112cflags-$(CONFIG_PA7100LC)	+= -march=1.1 -mschedule=7100LC
113cflags-$(CONFIG_PA7300LC)	+= -march=1.1 -mschedule=7300
114cflags-$(CONFIG_PA8X00)		+= -march=2.0 -mschedule=8000
115
116KBUILD_CFLAGS	+= $(cflags-y)
117LIBGCC		:= $(shell $(CC) -print-libgcc-file-name)
118export LIBGCC
119
120libs-y	+= arch/parisc/lib/ $(LIBGCC)
121
122boot	:= arch/parisc/boot
123
124PALO := $(shell if (which palo 2>&1); then : ; \
125	elif [ -x /sbin/palo ]; then echo /sbin/palo; \
126	fi)
127
128PALOCONF := $(shell if [ -f $(srctree)/palo.conf ]; then echo $(srctree)/palo.conf; \
129	else echo $(objtree)/palo.conf; \
130	fi)
131
132palo lifimage: vmlinuz
133	@if test ! -x "$(PALO)"; then \
134		echo 'ERROR: Please install palo first (apt-get install palo)';\
135		echo 'or build it from source and install it somewhere in your $$PATH';\
136		false; \
137	fi
138	@if test ! -f "$(PALOCONF)"; then \
139		cp $(srctree)/arch/parisc/defpalo.conf $(objtree)/palo.conf; \
140		echo 'A generic palo config file ($(objree)/palo.conf) has been created for you.'; \
141		echo 'You should check it and re-run "make palo".'; \
142		echo 'WARNING: the "lifimage" file is now placed in this directory by default!'; \
143		false; \
144	fi
145	$(PALO) -f $(PALOCONF)
146
147BOOT_TARGETS    = zImage Image palo lifimage
148INSTALL_TARGETS = zinstall install
149
150PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
151
152# Default kernel to build
153all: bzImage
154
155zImage: vmlinuz
156Image: vmlinux
157
158bzImage: vmlinux
159	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
160
161vmlinuz: bzImage
162	$(OBJCOPY) $(boot)/bzImage $@
163
164ifeq ($(KBUILD_EXTMOD),)
165# We need to generate vdso-offsets.h before compiling certain files in kernel/.
166# In order to do that, we should use the archprepare target, but we can't since
167# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
168# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
169# Therefore we need to generate the header after prepare0 has been made, hence
170# this hack.
171prepare: vdso_prepare
172vdso_prepare: prepare0
173	$(if $(CONFIG_64BIT),$(Q)$(MAKE) \
174		$(build)=arch/parisc/kernel/vdso64 include/generated/vdso64-offsets.h)
175	$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 include/generated/vdso32-offsets.h
176endif
177
178PHONY += vdso_install
179
180vdso_install:
181	$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso $@
182	$(if $(CONFIG_COMPAT_VDSO), \
183		$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 $@)
184
185install: KBUILD_IMAGE := vmlinux
186zinstall: KBUILD_IMAGE := vmlinuz
187install zinstall:
188	$(call cmd,install)
189
190CLEAN_FILES	+= lifimage
191MRPROPER_FILES	+= palo.conf
192
193define archhelp
194	@echo  '* vmlinux	- Uncompressed kernel image (./vmlinux)'
195	@echo  '  vmlinuz	- Compressed kernel image (./vmlinuz)'
196	@echo  '  palo		- Bootable image (./lifimage)'
197	@echo  '  install	- Install uncompressed vmlinux kernel using'
198	@echo  '		  (your) ~/bin/$(INSTALLKERNEL) or'
199	@echo  '		  (distribution) /sbin/$(INSTALLKERNEL) or'
200	@echo  '		  copy to $$(INSTALL_PATH)'
201	@echo  '  zinstall	- Install compressed vmlinuz kernel'
202endef
203
204archheaders:
205	$(Q)$(MAKE) $(build)=arch/parisc/kernel/syscalls all
206