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Masahiro Yamada 8212f8986d kbuild: use more subdir- for visiting subdirectories while cleaning

Documentation/kbuild/makefiles.rst suggests to use "archclean" for
cleaning arch/$(SRCARCH)/boot/, but it is not a hard requirement.

Since commit d92cc4d516 ("kbuild: require all architectures to have
arch/$(SRCARCH)/Kbuild"), we can use the "subdir- += boot" trick for
all architectures. This can take advantage of the parallel option (-j)
for "make clean".

I also cleaned up the comments in arch/$(SRCARCH)/Makefile. The "archdep"
target no longer exists.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

2021-10-24 13:49:46 +09:00

5.1 KiB

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parisc/Makefile

This file is included by the global makefile so that you can add your own

architecture-specific flags and dependencies.

This file is subject to the terms and conditions of the GNU General Public

License. See the file "COPYING" in the main directory of this archive

for more details.

Copyright (C) 1994 by Linus Torvalds

Portions Copyright (C) 1999 The Puffin Group

Modified for PA-RISC Linux by Paul Lahaie, Alex deVries,

Mike Shaver, Helge Deller and Martin K. Petersen

KBUILD_IMAGE := vmlinuz

NM = sh $(srctree)/arch/parisc/nm CHECKFLAGS += -D__hppa__=1

ifdef CONFIG_64BIT UTS_MACHINE := parisc64 CHECKFLAGS += -D__LP64__=1 LD_BFD := elf64-hppa-linux else # 32-bit LD_BFD := elf32-hppa-linux endif

select defconfig based on actual architecture

ifeq ($(ARCH),parisc64) KBUILD_DEFCONFIG := generic-64bit_defconfig CC_ARCHES := hppa64 else KBUILD_DEFCONFIG := generic-32bit_defconfig CC_ARCHES := hppa hppa2.0 hppa1.1 endif

export LD_BFD

ifdef cross_compiling ifeq ($(CROSS_COMPILE),) CC_SUFFIXES = linux linux-gnu unknown-linux-gnu CROSS_COMPILE := $(call cc-cross-prefix,
$(foreach a,$(CC_ARCHES),
$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-))) endif endif

ifdef CONFIG_DYNAMIC_FTRACE ifdef CONFIG_64BIT NOP_COUNT := 8 else NOP_COUNT := 5 endif

export CC_USING_RECORD_MCOUNT:=1 export CC_USING_PATCHABLE_FUNCTION_ENTRY:=1

KBUILD_AFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1 KBUILD_CFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY=1
-DFTRACE_PATCHABLE_FUNCTION_SIZE=$(NOP_COUNT)

CC_FLAGS_FTRACE := -fpatchable-function-entry=$(NOP_COUNT),$(shell echo $$(($(NOP_COUNT)-1))) endif

OBJCOPY_FLAGS =-O binary -R .note -R .comment -S

cflags-y := -pipe

These flags should be implied by an hppa-linux configuration, but they

are not in gcc 3.2.

cflags-y += -mno-space-regs

-mfast-indirect-calls is only relevant for 32-bit kernels.

ifndef CONFIG_64BIT cflags-y += -mfast-indirect-calls endif

Currently we save and restore fpregs on all kernel entry/interruption paths.

If that gets optimized, we might need to disable the use of fpregs in the

kernel.

cflags-y += -mdisable-fpregs

Use long jumps instead of long branches (needed if your linker fails to

link a too big vmlinux executable). Not enabled for building modules.

ifdef CONFIG_MLONGCALLS KBUILD_CFLAGS_KERNEL += -mlong-calls endif

Without this, "ld -r" results in .text sections that are too big (> 0x40000)

for branches to reach stubs. And multiple .text sections trigger a warning

when creating the sysfs module information section.

ifndef CONFIG_64BIT KBUILD_CFLAGS_MODULE += -ffunction-sections endif

select which processor to optimise for

cflags-$(CONFIG_PA7000) += -march=1.1 -mschedule=7100 cflags-$(CONFIG_PA7200) += -march=1.1 -mschedule=7200 cflags-$(CONFIG_PA7100LC) += -march=1.1 -mschedule=7100LC cflags-$(CONFIG_PA7300LC) += -march=1.1 -mschedule=7300 cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000

head-y := arch/parisc/kernel/head.o

KBUILD_CFLAGS += $(cflags-y) LIBGCC := $(shell $(CC) -print-libgcc-file-name) export LIBGCC

libs-y += arch/parisc/lib/ $(LIBGCC)

boot := arch/parisc/boot

PALO := $(shell if (which palo 2>&1); then : ;
elif [ -x /sbin/palo ]; then echo /sbin/palo;
fi)

PALOCONF := $(shell if [ -f $(srctree)/palo.conf ]; then echo $(srctree)/palo.conf;
else echo $(objtree)/palo.conf;
fi)

palo lifimage: vmlinuz @if test ! -x "$(PALO)"; then
echo 'ERROR: Please install palo first (apt-get install palo)';
echo 'or build it from source and install it somewhere in your $$PATH';
false;
fi @if test ! -f "$(PALOCONF)"; then
cp $(srctree)/arch/parisc/defpalo.conf $(objtree)/palo.conf;
echo 'A generic palo config file ($(objree)/palo.conf) has been created for you.';
echo 'You should check it and re-run "make palo".';
echo 'WARNING: the "lifimage" file is now placed in this directory by default!';
false;
fi $(PALO) -f $(PALOCONF)

BOOT_TARGETS = zImage Image palo lifimage INSTALL_TARGETS = zinstall install

PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)

Default kernel to build

all: bzImage

zImage: vmlinuz Image: vmlinux

bzImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

ifdef CONFIG_PARISC_SELF_EXTRACT vmlinuz: bzImage $(OBJCOPY) $(boot)/bzImage $@ else vmlinuz: vmlinux @$(KGZIP) -cf -9 $< > $@ endif

install: $(CONFIG_SHELL) $(srctree)/arch/parisc/install.sh
$(KERNELRELEASE) vmlinux System.map "$(INSTALL_PATH)" zinstall: $(CONFIG_SHELL) $(srctree)/arch/parisc/install.sh
$(KERNELRELEASE) vmlinuz System.map "$(INSTALL_PATH)"

CLEAN_FILES += lifimage MRPROPER_FILES += palo.conf

define archhelp @echo '* vmlinux - Uncompressed kernel image (./vmlinux)' @echo ' vmlinuz - Compressed kernel image (./vmlinuz)' @echo ' palo - Bootable image (./lifimage)' @echo ' install - Install uncompressed vmlinux kernel using' @echo ' (your) ~/bin/$(INSTALLKERNEL) or' @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' @echo ' copy to $$(INSTALL_PATH)' @echo ' zinstall - Install compressed vmlinuz kernel' endef

archheaders: $(Q)$(MAKE) $(build)=arch/parisc/kernel/syscalls all

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