1 # SPDX-License-Identifier: GPL-2.0
2 KBUILD_DEFCONFIG := mmu_defconfig
4 UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
6 # What CPU version are we building for, and crack it open
8 CPU_VER := $(CONFIG_XILINX_MICROBLAZE0_HW_VER)
9 CPU_MAJOR := $(word 1, $(subst ., , $(CPU_VER)))
10 CPU_MINOR := $(word 2, $(subst ., , $(CPU_VER)))
11 CPU_REV := $(word 3, $(subst ., , $(CPU_VER)))
13 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
15 # Use cpu-related CONFIG_ vars to set compile options.
16 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
17 # rather than bools y/n
19 # Work out HW multipler support. This is tricky.
20 # 1. Spartan2 has no HW multipliers.
21 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
22 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
23 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
25 CPUFLAGS-1 += -mno-xl-soft-mul
27 # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
28 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
29 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
32 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
34 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
36 ifdef CONFIG_CPU_BIG_ENDIAN
37 KBUILD_CFLAGS += -mbig-endian
38 KBUILD_AFLAGS += -mbig-endian
41 KBUILD_CFLAGS += -mlittle-endian
42 KBUILD_AFLAGS += -mlittle-endian
46 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
48 # r31 holds current when in kernel mode
49 KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2)
51 libs-y += arch/microblaze/lib/
53 boot := arch/microblaze/boot
55 # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
56 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
63 $(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all
65 PHONY += linux.bin linux.bin.gz linux.bin.ub
66 linux.bin.ub linux.bin.gz: linux.bin
68 linux.bin linux.bin.gz linux.bin.ub:
69 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
70 @echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
72 PHONY += simpleImage.$(DTB)
73 simpleImage.$(DTB): vmlinux
74 $(Q)$(MAKE) $(build)=$(boot) $(addprefix $(boot)/$@., ub unstrip strip)
75 @echo 'Kernel: $(boot)/$@ is ready' ' (#'$(or $(KBUILD_BUILD_VERSION),`cat .version`)')'
78 echo '* linux.bin - Create raw binary'
79 echo ' linux.bin.gz - Create compressed raw binary'
80 echo ' linux.bin.ub - Create U-Boot wrapped raw binary'
81 echo ' simpleImage.<dt> - Create the following images with <dt>.dtb linked in'
82 echo ' simpleImage.<dt> : raw image'
83 echo ' simpleImage.<dt>.ub : raw image with U-Boot header'
84 echo ' simpleImage.<dt>.unstrip: ELF (identical to vmlinux)'
85 echo ' simpleImage.<dt>.strip : stripped ELF'
86 echo ' Targets with <dt> embed a device tree blob inside the image'
87 echo ' These targets support board with firmware that does not'
88 echo ' support passing a device tree directly. Replace <dt> with the'
89 echo ' name of a dts file from the arch/microblaze/boot/dts/ directory'
90 echo ' (minus the .dts extension).'
93 MRPROPER_FILES += $(boot)/simpleImage.*