xref: /openbmc/linux/arch/microblaze/Makefile (revision f7777dcc) 
1ifeq ($(CONFIG_MMU),y)
2UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
3else
4UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
5endif
6
7# What CPU vesion are we building for, and crack it open
8# as major.minor.rev
9CPU_VER   := $(shell echo $(CONFIG_XILINX_MICROBLAZE0_HW_VER))
10CPU_MAJOR := $(shell echo $(CPU_VER) | cut -d '.' -f 1)
11CPU_MINOR := $(shell echo $(CPU_VER) | cut -d '.' -f 2)
12CPU_REV   := $(shell echo $(CPU_VER) | cut -d '.' -f 3)
13
14export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
15
16# Use cpu-related CONFIG_ vars to set compile options.
17# The various CONFIG_XILINX cpu features options are integers 0/1/2...
18# rather than bools y/n
19
20# Work out HW multipler support. This is tricky.
21# 1. Spartan2 has no HW multipliers.
22# 2. MicroBlaze v3.x always uses them, except in Spartan 2
23# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
24ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
25  ifeq ($(CPU_MAJOR),3)
26    CPUFLAGS-1 += -mno-xl-soft-mul
27  else
28    # USE_HW_MUL can be 0, 1, or 2, defining a hierarchy of HW Mul support.
29    CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
30    CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
31  endif
32endif
33CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
34CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
35CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
36
37CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
38
39# r31 holds current when in kernel mode
40KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
41
42LDFLAGS		:=
43LDFLAGS_vmlinux	:=
44
45head-y := arch/microblaze/kernel/head.o
46libs-y += arch/microblaze/lib/
47core-y += arch/microblaze/kernel/
48core-y += arch/microblaze/mm/
49core-y += arch/microblaze/platform/
50core-$(CONFIG_PCI) += arch/microblaze/pci/
51
52drivers-$(CONFIG_OPROFILE) += arch/microblaze/oprofile/
53
54boot := arch/microblaze/boot
55
56# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
57DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
58
59ifneq ($(DTB),)
60	core-y	+= $(boot)/dts/
61endif
62
63# defines filename extension depending memory management type
64ifeq ($(CONFIG_MMU),)
65MMU := -nommu
66endif
67
68export MMU DTB
69
70all: linux.bin
71
72archclean:
73	$(Q)$(MAKE) $(clean)=$(boot)
74
75linux.bin linux.bin.gz linux.bin.ub: vmlinux
76	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
77
78simpleImage.%: vmlinux
79	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
80
81define archhelp
82  echo '* linux.bin    - Create raw binary'
83  echo '  linux.bin.gz - Create compressed raw binary'
84  echo '  linux.bin.ub - Create U-Boot wrapped raw binary'
85  echo '  simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
86  echo '                   - stripped elf with fdt blob'
87  echo '  simpleImage.<dt>.unstrip - full ELF image with fdt blob'
88  echo '  *_defconfig      - Select default config from arch/microblaze/configs'
89  echo ''
90  echo '  Targets with <dt> embed a device tree blob inside the image'
91  echo '  These targets support board with firmware that does not'
92  echo '  support passing a device tree directly. Replace <dt> with the'
93  echo '  name of a dts file from the arch/microblaze/boot/dts/ directory'
94  echo '  (minus the .dts extension).'
95endef
96
97MRPROPER_FILES += $(boot)/simpleImage.*
98