linux/arch/microblaze/Makefile
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   1# SPDX-License-Identifier: GPL-2.0
   2KBUILD_DEFCONFIG := mmu_defconfig
   3
   4UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
   5
   6# What CPU version are we building for, and crack it open
   7# as major.minor.rev
   8CPU_VER   := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER))
   9CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1)
  10CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2)
  11CPU_REV   := $(shell echo $(CPU_VER) | cut -d '.' -f 3)
  12
  13export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
  14
  15# Use cpu-related CONFIG_ vars to set compile options.
  16# The various CONFIG_XILINX cpu features options are integers 0/1/2...
  17# rather than bools y/n
  18
  19# Work out HW multipler support. This is tricky.
  20# 1. Spartan2 has no HW multipliers.
  21# 2. MicroBlaze v3.x always uses them, except in Spartan 2
  22# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
  23ifeq (,$(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-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
  30  endif
  31endif
  32CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
  33CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
  34CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
  35
  36ifdef CONFIG_CPU_BIG_ENDIAN
  37KBUILD_CFLAGS += -mbig-endian
  38KBUILD_AFLAGS += -mbig-endian
  39KBUILD_LDFLAGS += -EB
  40else
  41KBUILD_CFLAGS += -mlittle-endian
  42KBUILD_AFLAGS += -mlittle-endian
  43KBUILD_LDFLAGS += -EL
  44endif
  45
  46CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
  47
  48# r31 holds current when in kernel mode
  49KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
  50
  51head-y := arch/microblaze/kernel/head.o
  52libs-y += arch/microblaze/lib/
  53core-y += arch/microblaze/kernel/
  54core-y += arch/microblaze/mm/
  55core-$(CONFIG_PCI) += arch/microblaze/pci/
  56
  57boot := arch/microblaze/boot
  58
  59# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
  60DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
  61
  62core-y  += $(boot)/dts/
  63
  64export DTB
  65
  66all: linux.bin
  67
  68archclean:
  69        $(Q)$(MAKE) $(clean)=$(boot)
  70
  71archheaders:
  72        $(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
  73
  74PHONY += linux.bin linux.bin.gz linux.bin.ub
  75linux.bin.ub linux.bin.gz: linux.bin
  76linux.bin: vmlinux
  77linux.bin linux.bin.gz linux.bin.ub:
  78        $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  79        @echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
  80
  81PHONY += simpleImage.$(DTB)
  82simpleImage.$(DTB): vmlinux
  83        $(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
  84        @echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
  85
  86define archhelp
  87  echo '* linux.bin    - Create raw binary'
  88  echo '  linux.bin.gz - Create compressed raw binary'
  89  echo '  linux.bin.ub - Create U-Boot wrapped raw binary'
  90  echo '  simpleImage.<dt> - Create the following images with <dt>.dtb linked in'
  91  echo '                    simpleImage.<dt>        : raw image'
  92  echo '                    simpleImage.<dt>.ub     : raw image with U-Boot header'
  93  echo '                    simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
  94  echo '                    simpleImage.<dt>.strip  : stripped ELF'
  95  echo '  Targets with <dt> embed a device tree blob inside the image'
  96  echo '  These targets support board with firmware that does not'
  97  echo '  support passing a device tree directly. Replace <dt> with the'
  98  echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
  99  echo '  (minus the .dts extension).'
 100endef
 101
 102MRPROPER_FILES += $(boot)/simpleImage.*
 103