1 # SPDX-License-Identifier: GPL-2.0
2 KBUILD_DEFCONFIG := mmu_defconfig
5 UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
7 UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
10 # What CPU vesion are we building for, and crack it open
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 $(CPU_VER) | cut -d '.' -f 3)
17 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
19 # Use cpu-related CONFIG_ vars to set compile options.
20 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
21 # rather than bools y/n
23 # Work out HW multipler support. This is tricky.
24 # 1. Spartan2 has no HW multipliers.
25 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
26 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
27 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
29 CPUFLAGS-1 += -mno-xl-soft-mul
31 # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
32 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
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
40 ifdef CONFIG_CPU_BIG_ENDIAN
41 KBUILD_CFLAGS += -mbig-endian
42 KBUILD_AFLAGS += -mbig-endian
45 KBUILD_CFLAGS += -mlittle-endian
46 KBUILD_AFLAGS += -mlittle-endian
50 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
52 # r31 holds current when in kernel mode
53 KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
55 head-y := arch/microblaze/kernel/head.o
56 libs-y += arch/microblaze/lib/
57 core-y += arch/microblaze/kernel/
58 core-y += arch/microblaze/mm/
59 core-$(CONFIG_PCI) += arch/microblaze/pci/
61 drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/
63 boot := arch/microblaze/boot
65 # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
66 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
69 core-y += $(boot)/dts/
72 # defines filename extension depending memory management type
82 $(Q)$(MAKE) $(clean)=$(boot)
84 linux.bin linux.bin.gz linux.bin.ub: vmlinux
85 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
86 @echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
88 simpleImage.%: vmlinux
89 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
90 @echo 'Kernel: $(boot)/$@ is ready' ' (#'`cat .version`')'
93 echo '* linux.bin - Create raw binary'
94 echo ' linux.bin.gz - Create compressed raw binary'
95 echo ' linux.bin.ub - Create U-Boot wrapped raw binary'
96 echo ' simpleImage.<dt> - Create the following images with <dt>.dtb linked in'
97 echo ' simpleImage.<dt> : raw image'
98 echo ' simpleImage.<dt>.ub : raw image with U-Boot header'
99 echo ' simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
100 echo ' simpleImage.<dt>.strip : stripped ELF'
101 echo ' Targets with <dt> embed a device tree blob inside the image'
102 echo ' These targets support board with firmware that does not'
103 echo ' support passing a device tree directly. Replace <dt> with the'
104 echo ' name of a dts file from the arch/microblaze/boot/dts/ directory'
105 echo ' (minus the .dts extension).'
108 MRPROPER_FILES += $(boot)/simpleImage.*