xref: /openbmc/linux/arch/microblaze/Makefile (revision eb50fd3a) 
1KBUILD_DEFCONFIG := mmu_defconfig
2
3ifeq ($(CONFIG_MMU),y)
4UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
5else
6UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
7endif
8
9# What CPU vesion are we building for, and crack it open
10# as major.minor.rev
11CPU_VER   := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER))
12CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1)
13CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2)
14CPU_REV   := $(shell echo $(CPU_VER) | cut -d '.' -f 3)
15
16export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
17
18# Use cpu-related CONFIG_ vars to set compile options.
19# The various CONFIG_XILINX cpu features options are integers 0/1/2...
20# rather than bools y/n
21
22# Work out HW multipler support. This is tricky.
23# 1. Spartan2 has no HW multipliers.
24# 2. MicroBlaze v3.x always uses them, except in Spartan 2
25# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
26ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
27  ifeq ($(CPU_MAJOR),3)
28    CPUFLAGS-1 += -mno-xl-soft-mul
29  else
30    # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
31    CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
32    CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
33  endif
34endif
35CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
36CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
37CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
38CPUFLAGS-$(CONFIG_BIG_ENDIAN) += -mbig-endian
39CPUFLAGS-$(CONFIG_LITTLE_ENDIAN) += -mlittle-endian
40
41CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
42
43# r31 holds current when in kernel mode
44KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
45
46LDFLAGS		:=
47LDFLAGS_vmlinux	:=
48
49head-y := arch/microblaze/kernel/head.o
50libs-y += arch/microblaze/lib/
51core-y += arch/microblaze/kernel/
52core-y += arch/microblaze/mm/
53core-$(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	+= $(boot)/dts/
64endif
65
66# defines filename extension depending memory management type
67ifeq ($(CONFIG_MMU),)
68MMU := -nommu
69endif
70
71export MMU DTB
72
73all: linux.bin
74
75archclean:
76	$(Q)$(MAKE) $(clean)=$(boot)
77
78linux.bin linux.bin.gz linux.bin.ub: vmlinux
79	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
80
81simpleImage.%: vmlinux
82	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
83
84define archhelp
85  echo '* linux.bin    - Create raw binary'
86  echo '  linux.bin.gz - Create compressed raw binary'
87  echo '  linux.bin.ub - Create U-Boot wrapped raw binary'
88  echo '  simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
89  echo '                   - stripped elf with fdt blob'
90  echo '  simpleImage.<dt>.unstrip - full ELF image with fdt blob'
91  echo '  *_defconfig      - Select default config from arch/microblaze/configs'
92  echo ''
93  echo '  Targets with <dt> embed a device tree blob inside the image'
94  echo '  These targets support board with firmware that does not'
95  echo '  support passing a device tree directly. Replace <dt> with the'
96  echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
97  echo '  (minus the .dts extension).'
98endef
99
100MRPROPER_FILES += $(boot)/simpleImage.*
101