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