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- # 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) $(CPUFLAGS-2)
- libs-y += arch/microblaze/lib/
- boot := arch/microblaze/boot
- # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
- DTB:=$(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.<dt> - Create the following images with <dt>.dtb linked in'
- echo ' simpleImage.<dt> : raw image'
- echo ' simpleImage.<dt>.ub : raw image with U-Boot header'
- echo ' simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
- echo ' simpleImage.<dt>.strip : stripped ELF'
- echo ' Targets with <dt> embed a device tree blob inside the image'
- echo ' These targets support board with firmware that does not'
- echo ' support passing a device tree directly. Replace <dt> with the'
- echo ' name of a dts file from the arch/microblaze/boot/dts/ directory'
- echo ' (minus the .dts extension).'
- endef
- MRPROPER_FILES += $(boot)/simpleImage.*
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