1ifeq ($(CONFIG_MMU),y) 2UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\" 3else 4UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\" 5endif 6 7# What CPU vesion are we building for, and crack it open 8# as major.minor.rev 9CPU_VER=$(subst ",,$(CONFIG_XILINX_MICROBLAZE0_HW_VER) ) 10CPU_MAJOR=$(shell echo $(CPU_VER) | cut -d '.' -f 1) 11CPU_MINOR=$(shell echo $(CPU_VER) | cut -d '.' -f 2) 12CPU_REV=$(shell echo $(CPU_VER) | cut -d '.' -f 3) 13 14export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV 15 16# Use cpu-related CONFIG_ vars to set compile options. 17 18# Work out HW multipler support. This is icky. 19# 1. Spartan2 has no HW multiplers. 20# 2. MicroBlaze v3.x always uses them, except in Spartan 2 21# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings 22ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY))) 23 ifeq ($(CPU_MAJOR),3) 24 CPUFLAGS-1 += -mno-xl-soft-mul 25 else 26 # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support. 27 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high 28 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul 29 endif 30endif 31CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div 32CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift 33CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare 34 35CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER)) 36 37# The various CONFIG_XILINX cpu features options are integers 0/1/2... 38# rather than bools y/n 39 40# r31 holds current when in kernel mode 41CFLAGS_KERNEL += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2) 42 43LDFLAGS := 44LDFLAGS_vmlinux := 45LDFLAGS_BLOB := --format binary --oformat elf32-microblaze 46 47LIBGCC := $(shell $(CC) $(CFLAGS_KERNEL) -print-libgcc-file-name) 48 49head-y := arch/microblaze/kernel/head.o 50libs-y += arch/microblaze/lib/ $(LIBGCC) 51core-y += arch/microblaze/kernel/ arch/microblaze/mm/ \ 52 arch/microblaze/platform/ 53 54boot := arch/$(ARCH)/boot 55 56# defines filename extension depending memory management type 57ifeq ($(CONFIG_MMU),) 58MMUEXT := -nommu 59endif 60export MMUEXT 61 62all: linux.bin 63 64archclean: 65 $(Q)$(MAKE) $(clean)=$(boot) 66 67linux.bin linux.bin.gz: vmlinux 68 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 69 70define archhelp 71 echo '* linux.bin - Create raw binary' 72 echo ' linux.bin.gz - Create compressed raw binary' 73endef 74