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 := $(shell echo $(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 $(CPU_VER) | cut -d '.' -f 3) 13 14export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV 15 16# Use cpu-related CONFIG_ vars to set compile options. 17# The various CONFIG_XILINX cpu features options are integers 0/1/2... 18# rather than bools y/n 19 20# Work out HW multipler support. This is icky. 21# 1. Spartan2 has no HW multiplers. 22# 2. MicroBlaze v3.x always uses them, except in Spartan 2 23# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings 24ifeq (,$(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 hierarchy of HW Mul support. 29 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high 30 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul 31 endif 32endif 33CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div 34CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift 35CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare 36 37CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER)) 38 39# r31 holds current when in kernel mode 40KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2) 41 42LDFLAGS := 43LDFLAGS_vmlinux := 44 45LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) 46 47head-y := arch/microblaze/kernel/head.o 48libs-y += arch/microblaze/lib/ 49libs-y += $(LIBGCC) 50core-y += arch/microblaze/kernel/ 51core-y += arch/microblaze/mm/ 52core-y += arch/microblaze/platform/ 53core-$(CONFIG_PCI) += arch/microblaze/pci/ 54 55drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/ 56 57boot := arch/microblaze/boot 58 59# Are we making a simpleImage.<boardname> target? If so, crack out the boardname 60DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS))) 61 62ifneq ($(DTB),) 63 core-y += $(boot)/ 64endif 65 66# defines filename extension depending memory management type 67ifeq ($(CONFIG_MMU),) 68MMU := -nommu 69endif 70 71export MMU DTB 72 73all: linux.bin 74 75# With make 3.82 we cannot mix normal and wildcard targets 76BOOT_TARGETS1 = linux.bin linux.bin.gz 77BOOT_TARGETS2 = simpleImage.% 78 79archclean: 80 $(Q)$(MAKE) $(clean)=$(boot) 81 82$(BOOT_TARGETS1): vmlinux 83 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 84$(BOOT_TARGETS2): vmlinux 85 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 86 87define archhelp 88 echo '* linux.bin - Create raw binary' 89 echo ' linux.bin.gz - Create compressed raw binary' 90 echo ' simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in' 91 echo ' - stripped elf with fdt blob' 92 echo ' simpleImage.<dt>.unstrip - full ELF image with fdt blob' 93 echo ' *_defconfig - Select default config from arch/microblaze/configs' 94 echo '' 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