ifeq ($(CONFIG_MMU),y) UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\" else UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\" endif # What CPU vesion are we building for, and crack it open # as major.minor.rev CPU_VER := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER)) CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1) CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2) CPU_REV := $(shell echo $(CPU_VER) | cut -d '.' -f 3) export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV # Use cpu-related CONFIG_ vars to set compile options. # The various CONFIG_XILINX cpu features options are integers 0/1/2... # rather than bools y/n # Work out HW multipler support. This is icky. # 1. Spartan2 has no HW multiplers. # 2. MicroBlaze v3.x always uses them, except in Spartan 2 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings ifeq (,$(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 heirarchy 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 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER)) # r31 holds current when in kernel mode KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2) LDFLAGS := LDFLAGS_vmlinux := LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) head-y := arch/microblaze/kernel/head.o libs-y += arch/microblaze/lib/ libs-y += $(LIBGCC) core-y += arch/microblaze/kernel/ core-y += arch/microblaze/mm/ core-y += arch/microblaze/platform/ core-$(CONFIG_PCI) += arch/microblaze/pci/ drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/ boot := arch/microblaze/boot # Are we making a simpleImage.<boardname> target? If so, crack out the boardname DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS))) ifneq ($(DTB),) core-y += $(boot)/ endif # defines filename extension depending memory management type ifeq ($(CONFIG_MMU),) MMU := -nommu endif export MMU DTB all: linux.bin BOOT_TARGETS = linux.bin linux.bin.gz simpleImage.% archclean: $(Q)$(MAKE) $(clean)=$(boot) $(BOOT_TARGETS): vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ define archhelp echo '* linux.bin - Create raw binary' echo ' linux.bin.gz - Create compressed raw binary' echo ' simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in' echo ' - stripped elf with fdt blob' echo ' simpleImage.<dt>.unstrip - full ELF image with fdt blob' echo ' *_defconfig - Select default config from arch/microblaze/configs' echo '' 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.*