arch/microblaze/Makefile

   1 ifeq ($(CONFIG_MMU),y)
   2 UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
   3 else
   4 UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
   5 endif
   6
   7 # What CPU vesion are we building for, and crack it open
   8 # as major.minor.rev
   9 CPU_VER   := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER))
  10 CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1)
  11 CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2)
  12 CPU_REV   := $(shell echo $(CPU_VER) | cut -d '.' -f 3)
  13
  14 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
  15
  16 # Use cpu-related CONFIG_ vars to set compile options.
  17 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
  18 # rather than bools y/n
  19
  20 # Work out HW multipler support.  This is icky.
  21 # 1. Spartan2 has no HW multiplers.
  22 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
  23 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
  24 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
  25   ifeq ($(CPU_MAJOR),3)
  26     CPUFLAGS-1 += -mno-xl-soft-mul
  27   else
  28     # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
  29     CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
  30     CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
  31   endif
  32 endif
  33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
  34 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
  35 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
  36
  37 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
  38
  39 # r31 holds current when in kernel mode
  40 KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
  41
  42 LDFLAGS         :=
  43 LDFLAGS_vmlinux :=
  44
  45 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  46
  47 head-y := arch/microblaze/kernel/head.o
  48 libs-y += arch/microblaze/lib/
  49 libs-y += $(LIBGCC)
  50 core-y += arch/microblaze/kernel/
  51 core-y += arch/microblaze/mm/
  52 core-y += arch/microblaze/platform/
  53
  54 boot := arch/microblaze/boot
  55
  56 # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
  57 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
  58
  59 ifneq ($(DTB),)
  60         core-y  += $(boot)/
  61 endif
  62
  63 # defines filename extension depending memory management type
  64 ifeq ($(CONFIG_MMU),)
  65 MMU := -nommu
  66 endif
  67
  68 export MMU DTB
  69
  70 all: linux.bin
  71
  72 BOOT_TARGETS = linux.bin linux.bin.gz simpleImage.%
  73
  74 archclean:
  75         $(Q)$(MAKE) $(clean)=$(boot)
  76
  77 $(BOOT_TARGETS): vmlinux
  78         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  79
  80 define archhelp
  81   echo '* linux.bin    - Create raw binary'
  82   echo '  linux.bin.gz - Create compressed raw binary'
  83   echo '  simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
  84   echo '                   - stripped elf with fdt blob
  85   echo '  simpleImage.<dt>.unstrip - full ELF image with fdt blob'
  86   echo '  *_defconfig      - Select default config from arch/microblaze/configs'
  87   echo ''
  88   echo '  Targets with <dt> embed a device tree blob inside the image'
  89   echo '  These targets support board with firmware that does not'
  90   echo '  support passing a device tree directly. Replace <dt> with the'
  91   echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
  92   echo '  (minus the .dts extension).'
  93 endef