1# SPDX-License-Identifier: GPL-2.0 2KBUILD_DEFCONFIG := mmu_defconfig 3 4ifeq ($(CONFIG_MMU),y) 5UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\" 6else 7UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\" 8endif 9 10# What CPU vesion are we building for, and crack it open 11# as major.minor.rev 12CPU_VER := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER)) 13CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1) 14CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2) 15CPU_REV := $(shell echo $(CPU_VER) | cut -d '.' -f 3) 16 17export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV 18 19# Use cpu-related CONFIG_ vars to set compile options. 20# The various CONFIG_XILINX cpu features options are integers 0/1/2... 21# rather than bools y/n 22 23# Work out HW multipler support. This is tricky. 24# 1. Spartan2 has no HW multipliers. 25# 2. MicroBlaze v3.x always uses them, except in Spartan 2 26# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings 27ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY))) 28 ifeq ($(CPU_MAJOR),3) 29 CPUFLAGS-1 += -mno-xl-soft-mul 30 else 31 # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support. 32 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high 33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul 34 endif 35endif 36CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div 37CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift 38CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare 39 40ifdef CONFIG_CPU_BIG_ENDIAN 41KBUILD_CFLAGS += -mbig-endian 42KBUILD_AFLAGS += -mbig-endian 43LD += -EB 44else 45KBUILD_CFLAGS += -mlittle-endian 46KBUILD_AFLAGS += -mlittle-endian 47LD += -EL 48endif 49 50CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER)) 51 52# r31 holds current when in kernel mode 53KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2) 54 55head-y := arch/microblaze/kernel/head.o 56libs-y += arch/microblaze/lib/ 57core-y += arch/microblaze/kernel/ 58core-y += arch/microblaze/mm/ 59core-$(CONFIG_PCI) += arch/microblaze/pci/ 60 61drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/ 62 63boot := arch/microblaze/boot 64 65# Are we making a simpleImage.<boardname> target? If so, crack out the boardname 66DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS))) 67 68ifneq ($(DTB),) 69 core-y += $(boot)/dts/ 70endif 71 72# defines filename extension depending memory management type 73ifeq ($(CONFIG_MMU),) 74MMU := -nommu 75endif 76 77export MMU DTB 78 79all: linux.bin 80 81archclean: 82 $(Q)$(MAKE) $(clean)=$(boot) 83 84linux.bin linux.bin.gz linux.bin.ub: vmlinux 85 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 86 87simpleImage.%: vmlinux 88 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ 89 90define archhelp 91 echo '* linux.bin - Create raw binary' 92 echo ' linux.bin.gz - Create compressed raw binary' 93 echo ' linux.bin.ub - Create U-Boot wrapped raw binary' 94 echo ' simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in' 95 echo ' - stripped elf with fdt blob' 96 echo ' simpleImage.<dt>.unstrip - full ELF image with fdt blob' 97 echo ' *_defconfig - Select default config from arch/microblaze/configs' 98 echo '' 99 echo ' Targets with <dt> embed a device tree blob inside the image' 100 echo ' These targets support board with firmware that does not' 101 echo ' support passing a device tree directly. Replace <dt> with the' 102 echo ' name of a dts file from the arch/microblaze/boot/dts/ directory' 103 echo ' (minus the .dts extension).' 104endef 105 106MRPROPER_FILES += $(boot)/simpleImage.* 107