083cad7804
Since commit2df8220cc5("kbuild: build init/built-in.a just once"), the .version file is not touched at all when KBUILD_BUILD_VERSION is given. If KBUILD_BUILD_VERSION is specified and the .version file is missing (for example right after 'make mrproper'), "No such file or director" is shown. Even if the .version exists, it is irrelevant to the version of the current build. $ make -j$(nproc) KBUILD_BUILD_VERSION=100 mrproper defconfig all [ snip ] BUILD arch/x86/boot/bzImage cat: .version: No such file or directory Kernel: arch/x86/boot/bzImage is ready (#) Show KBUILD_BUILD_VERSION if it is given. Fixes:2df8220cc5("kbuild: build init/built-in.a just once") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
3.4 KiB
SPDX-License-Identifier: GPL-2.0
KBUILD_DEFCONFIG := mmu_defconfig
UTS_SYSNAME = -DUTS_SYSNAME="Linux"
What CPU version are we building for, and crack it open
as major.minor.rev
CPU_VER := $(CONFIG_XILINX_MICROBLAZE0_HW_VER) CPU_MAJOR := $(word 1, $(subst ., , $(CPU_VER))) CPU_MINOR := $(word 2, $(subst ., , $(CPU_VER))) CPU_REV := $(word 3, $(subst ., , $(CPU_VER)))
export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
Use cpu-related CONFIG_ vars to set compile options.
The various CONFIG_XILINX cpu features options are integers 0/1/2...
rather than bools y/n
Work out HW multipler support. This is tricky.
1. Spartan2 has no HW multipliers.
2. MicroBlaze v3.x always uses them, except in Spartan 2
3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY))) ifeq ($(CPU_MAJOR),3) CPUFLAGS-1 += -mno-xl-soft-mul else # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support. CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul endif endif CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
ifdef CONFIG_CPU_BIG_ENDIAN KBUILD_CFLAGS += -mbig-endian KBUILD_AFLAGS += -mbig-endian KBUILD_LDFLAGS += -EB else KBUILD_CFLAGS += -mlittle-endian KBUILD_AFLAGS += -mlittle-endian KBUILD_LDFLAGS += -EL endif
CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
r31 holds current when in kernel mode
KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
libs-y += arch/microblaze/lib/
boot := arch/microblaze/boot
Are we making a simpleImage. target? If so, crack out the boardname
DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
export DTB
all: linux.bin
archheaders: $(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
PHONY += linux.bin linux.bin.gz linux.bin.ub
linux.bin.ub linux.bin.gz: linux.bin
linux.bin: vmlinux
linux.bin linux.bin.gz linux.bin.ub:
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),cat .version)')'
PHONY += simpleImage.$(DTB)
simpleImage.$(DTB): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
@echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),cat .version)')'
define archhelp echo '* linux.bin - Create raw binary' echo ' linux.bin.gz - Create compressed raw binary' echo ' linux.bin.ub - Create U-Boot wrapped raw binary' echo ' simpleImage.
MRPROPER_FILES += $(boot)/simpleImage.*