arch/microblaze/Makefile

   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.*