2543133381
Currently, the kernel uses CONFIG_DEVICE_TREE to wrap a kernel image with a fdt blob which means for any given configuration only one dts file can be selected and so support for only one board can be built This moves the selection of the default .dts file out of the kernel config and into the bootwrapper makefile. The makefile chooses which images to build based on the kernel config and the dts source file name is taken directly from the image name. For example "cuImage.ebony" will use "ebony.dts" as the device tree source file. In addition, this patch allows a specific image to be requested from the command line by adding "cuImage.%" and "treeImage.%" targets to the list of valid built targets in arch/powerpc/Makefile. This allows the default dts selection to be overridden. Another advantage to this change is it allows a single defconfig to be supplied for all boards using the same chip family and only differing in the device tree. Important note: This patch adds two new zImage targets; zImage.dtb.% and zImage.dtb.initrd.% for zImages with embedded dtb files. Currently there are 5 platforms which require this: ps3, ep405, mpc885ads, ep88xc, adder875-redboot and ep8248e. This patch *changes the zImage filenames* for those platforms. ie. 'zImage.ps3' is now 'zImage.dtb.ps3'. This new zImage.dtb targets were added so that the .dts file could be part of the dependancies list for building them. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
225 lines
6.6 KiB
Makefile
225 lines
6.6 KiB
Makefile
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies. Remember to do have actions
|
|
# for "archclean" and "archdep" for cleaning up and making dependencies for
|
|
# this architecture.
|
|
#
|
|
# 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
|
|
# Changes for PPC by Gary Thomas
|
|
# Rewritten by Cort Dougan and Paul Mackerras
|
|
#
|
|
|
|
HAS_BIARCH := $(call cc-option-yn, -m32)
|
|
|
|
# Set default 32 bits cross compilers for vdso and boot wrapper
|
|
CROSS32_COMPILE ?=
|
|
|
|
CROSS32CC := $(CROSS32_COMPILE)gcc
|
|
CROSS32AS := $(CROSS32_COMPILE)as
|
|
CROSS32LD := $(CROSS32_COMPILE)ld
|
|
CROSS32AR := $(CROSS32_COMPILE)ar
|
|
CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
|
|
|
|
ifeq ($(HAS_BIARCH),y)
|
|
ifeq ($(CROSS32_COMPILE),)
|
|
CROSS32CC := $(CC) -m32
|
|
CROSS32AS := $(AS) -a32
|
|
CROSS32LD := $(LD) -m elf32ppc
|
|
CROSS32OBJCOPY := $(OBJCOPY)
|
|
CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
|
|
endif
|
|
endif
|
|
|
|
export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
|
|
|
|
ifeq ($(CROSS_COMPILE),)
|
|
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
|
|
else
|
|
KBUILD_DEFCONFIG := ppc64_defconfig
|
|
endif
|
|
|
|
ifeq ($(CONFIG_PPC64),y)
|
|
OLDARCH := ppc64
|
|
|
|
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
|
|
|
|
ifeq ($(new_nm),y)
|
|
NM := $(NM) --synthetic
|
|
endif
|
|
|
|
else
|
|
OLDARCH := ppc
|
|
endif
|
|
|
|
# It seems there are times we use this Makefile without
|
|
# including the config file, but this replicates the old behaviour
|
|
ifeq ($(CONFIG_WORD_SIZE),)
|
|
CONFIG_WORD_SIZE := 32
|
|
endif
|
|
|
|
UTS_MACHINE := $(OLDARCH)
|
|
|
|
ifeq ($(HAS_BIARCH),y)
|
|
override AS += -a$(CONFIG_WORD_SIZE)
|
|
override LD += -m elf$(CONFIG_WORD_SIZE)ppc
|
|
override CC += -m$(CONFIG_WORD_SIZE)
|
|
override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
|
|
endif
|
|
|
|
LDFLAGS_vmlinux := -Bstatic
|
|
|
|
CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
|
|
AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
|
|
CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
|
|
CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
|
|
KBUILD_CPPFLAGS += $(CPPFLAGS-y)
|
|
KBUILD_AFLAGS += $(AFLAGS-y)
|
|
KBUILD_CFLAGS += -msoft-float -pipe $(CFLAGS-y)
|
|
CPP = $(CC) -E $(KBUILD_CFLAGS)
|
|
|
|
CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
|
|
|
|
ifeq ($(CONFIG_PPC64),y)
|
|
GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
|
|
|
|
ifeq ($(CONFIG_POWER4_ONLY),y)
|
|
ifeq ($(CONFIG_ALTIVEC),y)
|
|
ifeq ($(GCC_BROKEN_VEC),y)
|
|
KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
|
|
endif
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
|
|
endif
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(CONFIG_TUNE_CELL),y)
|
|
KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
|
|
endif
|
|
|
|
# No AltiVec instruction when building kernel
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
|
|
|
|
# No SPE instruction when building kernel
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-spe)
|
|
|
|
# Enable unit-at-a-time mode when possible. It shrinks the
|
|
# kernel considerably.
|
|
KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
|
|
|
|
# Never use string load/store instructions as they are
|
|
# often slow when they are implemented at all
|
|
KBUILD_CFLAGS += -mno-string
|
|
|
|
ifeq ($(CONFIG_6xx),y)
|
|
KBUILD_CFLAGS += -mcpu=powerpc
|
|
endif
|
|
|
|
cpu-as-$(CONFIG_4xx) += -Wa,-m405
|
|
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
|
|
cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
|
|
cpu-as-$(CONFIG_E500) += -Wa,-me500
|
|
cpu-as-$(CONFIG_E200) += -Wa,-me200
|
|
|
|
KBUILD_AFLAGS += $(cpu-as-y)
|
|
KBUILD_CFLAGS += $(cpu-as-y)
|
|
|
|
head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
|
|
head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
|
|
head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
|
|
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
|
|
head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
|
|
|
|
head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
|
|
head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
|
|
|
|
core-y += arch/powerpc/kernel/ \
|
|
arch/powerpc/mm/ \
|
|
arch/powerpc/lib/ \
|
|
arch/powerpc/sysdev/ \
|
|
arch/powerpc/platforms/
|
|
core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
|
|
core-$(CONFIG_XMON) += arch/powerpc/xmon/
|
|
|
|
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
|
|
|
|
# Default to zImage, override when needed
|
|
all: zImage
|
|
|
|
CPPFLAGS_vmlinux.lds := -Upowerpc
|
|
|
|
BOOT_TARGETS = zImage zImage.initrd uImage treeImage.% cuImage.%
|
|
|
|
PHONY += $(BOOT_TARGETS)
|
|
|
|
boot := arch/$(ARCH)/boot
|
|
|
|
$(BOOT_TARGETS): vmlinux
|
|
$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
|
|
|
bootwrapper_install:
|
|
$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
|
|
|
define archhelp
|
|
@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
|
|
@echo ' install - Install kernel using'
|
|
@echo ' (your) ~/bin/installkernel or'
|
|
@echo ' (distribution) /sbin/installkernel or'
|
|
@echo ' install to $$(INSTALL_PATH) and run lilo'
|
|
@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
|
|
endef
|
|
|
|
install: vdso_install
|
|
$(Q)$(MAKE) $(build)=$(boot) install
|
|
|
|
vdso_install:
|
|
ifeq ($(CONFIG_PPC64),y)
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
|
|
endif
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
|
|
|
|
archclean:
|
|
$(Q)$(MAKE) $(clean)=$(boot)
|
|
|
|
archprepare: checkbin
|
|
|
|
# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
|
|
# to stdout and these checks are run even on install targets.
|
|
TOUT := .tmp_gas_check
|
|
# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
|
|
# instructions.
|
|
# gcc-3.4 and binutils-2.14 are a fatal combination.
|
|
|
|
checkbin:
|
|
@if test "$(call cc-version)" = "0304" ; then \
|
|
if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
|
|
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
|
|
echo 'correctly with gcc-3.4 and your version of binutils.'; \
|
|
echo '*** Please upgrade your binutils or downgrade your gcc'; \
|
|
false; \
|
|
fi ; \
|
|
fi
|
|
@if test "$(call cc-fullversion)" = "040200" \
|
|
&& test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
|
|
echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
|
|
echo 'kernel with modules enabled.' ; \
|
|
echo -n '*** Please use a different GCC version or ' ; \
|
|
echo 'disable kernel modules' ; \
|
|
false ; \
|
|
fi
|
|
@if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
|
|
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
|
|
echo 'correctly with old versions of binutils.' ; \
|
|
echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
|
|
false ; \
|
|
fi
|
|
|
|
CLEAN_FILES += $(TOUT)
|
|
|