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TOMOYO Linux Cross Reference
Linux/arch/microblaze/Makefile

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  1 # SPDX-License-Identifier: GPL-2.0
  2 KBUILD_DEFCONFIG := mmu_defconfig
  3 
  4 UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
  5 
  6 # What CPU version are we building for, and crack it open
  7 # as major.minor.rev
  8 CPU_VER   := $(CONFIG_XILINX_MICROBLAZE0_HW_VER)
  9 CPU_MAJOR := $(word 1, $(subst ., , $(CPU_VER)))
 10 CPU_MINOR := $(word 2, $(subst ., , $(CPU_VER)))
 11 CPU_REV   := $(word 3, $(subst ., , $(CPU_VER)))
 12 
 13 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
 14 
 15 # Use cpu-related CONFIG_ vars to set compile options.
 16 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
 17 # rather than bools y/n
 18 
 19 # Work out HW multipler support. This is tricky.
 20 # 1. Spartan2 has no HW multipliers.
 21 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
 22 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
 23 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
 24   ifeq ($(CPU_MAJOR),3)
 25     CPUFLAGS-1 += -mno-xl-soft-mul
 26   else
 27     # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
 28     CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
 29     CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
 30   endif
 31 endif
 32 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
 33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
 34 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
 35 
 36 ifdef CONFIG_CPU_BIG_ENDIAN
 37 KBUILD_CFLAGS += -mbig-endian
 38 KBUILD_AFLAGS += -mbig-endian
 39 KBUILD_LDFLAGS += -EB
 40 else
 41 KBUILD_CFLAGS += -mlittle-endian
 42 KBUILD_AFLAGS += -mlittle-endian
 43 KBUILD_LDFLAGS += -EL
 44 endif
 45 
 46 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
 47 
 48 # r31 holds current when in kernel mode
 49 KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
 50 
 51 libs-y += arch/microblaze/lib/
 52 
 53 boot := arch/microblaze/boot
 54 
 55 # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
 56 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
 57 
 58 export DTB
 59 
 60 all: linux.bin
 61 
 62 archheaders:
 63         $(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
 64 
 65 PHONY += linux.bin linux.bin.gz linux.bin.ub
 66 linux.bin.ub linux.bin.gz: linux.bin
 67 linux.bin: vmlinux
 68 linux.bin linux.bin.gz linux.bin.ub:
 69         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 70         @echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
 71 
 72 PHONY += simpleImage.$(DTB)
 73 simpleImage.$(DTB): vmlinux
 74         $(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
 75         @echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
 76 
 77 define archhelp
 78   echo '* linux.bin    - Create raw binary'
 79   echo '  linux.bin.gz - Create compressed raw binary'
 80   echo '  linux.bin.ub - Create U-Boot wrapped raw binary'
 81   echo '  simpleImage.<dt> - Create the following images with <dt>.dtb linked in'
 82   echo '                    simpleImage.<dt>        : raw image'
 83   echo '                    simpleImage.<dt>.ub     : raw image with U-Boot header'
 84   echo '                    simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
 85   echo '                    simpleImage.<dt>.strip  : stripped ELF'
 86   echo '  Targets with <dt> embed a device tree blob inside the image'
 87   echo '  These targets support board with firmware that does not'
 88   echo '  support passing a device tree directly. Replace <dt> with the'
 89   echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
 90   echo '  (minus the .dts extension).'
 91 endef
 92 
 93 MRPROPER_FILES += $(boot)/simpleImage.*

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