blob: 34187354304a6217d16ff3dab5315e605409ab05 [file] [log] [blame]
Michal Simek4b2368f2009-05-26 16:30:32 +02001ifeq ($(CONFIG_MMU),y)
2UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
3else
Michal Simek5f8ffb52009-03-27 14:25:51 +01004UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
Michal Simek4b2368f2009-05-26 16:30:32 +02005endif
Michal Simek5f8ffb52009-03-27 14:25:51 +01006
7# What CPU vesion are we building for, and crack it open
8# as major.minor.rev
Sam Ravnborg950b2602009-07-24 09:04:49 +02009CPU_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 $(CPU_VER) | cut -d '.' -f 3)
Michal Simek5f8ffb52009-03-27 14:25:51 +010013
14export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
15
16# Use cpu-related CONFIG_ vars to set compile options.
Sam Ravnborg950b2602009-07-24 09:04:49 +020017# The various CONFIG_XILINX cpu features options are integers 0/1/2...
18# rather than bools y/n
Michal Simek5f8ffb52009-03-27 14:25:51 +010019
20# Work out HW multipler support. This is icky.
21# 1. Spartan2 has no HW multiplers.
22# 2. MicroBlaze v3.x always uses them, except in Spartan 2
23# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
24ifeq (,$(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 heirarchy 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-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
Michal Simek04e3a552009-04-20 09:56:24 +020035CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
Michal Simek5f8ffb52009-03-27 14:25:51 +010036
37CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
38
Michal Simek5f8ffb52009-03-27 14:25:51 +010039# r31 holds current when in kernel mode
John Williamse469b0e2009-09-17 21:21:23 +100040KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
Michal Simek5f8ffb52009-03-27 14:25:51 +010041
Thomas Chouc3055d12009-05-19 22:48:10 +080042LDFLAGS :=
43LDFLAGS_vmlinux :=
Michal Simek5f8ffb52009-03-27 14:25:51 +010044
John Williamse469b0e2009-09-17 21:21:23 +100045LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
Michal Simek5f8ffb52009-03-27 14:25:51 +010046
Sam Ravnborg950b2602009-07-24 09:04:49 +020047head-y := arch/microblaze/kernel/head.o
48libs-y += arch/microblaze/lib/
49libs-y += $(LIBGCC)
50core-y += arch/microblaze/kernel/
51core-y += arch/microblaze/mm/
52core-y += arch/microblaze/platform/
Michal Simek5f8ffb52009-03-27 14:25:51 +010053
Sam Ravnborg950b2602009-07-24 09:04:49 +020054boot := arch/microblaze/boot
Michal Simek5f8ffb52009-03-27 14:25:51 +010055
Michal Simekf05131c2009-09-14 15:15:49 +020056# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
57DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
58
59ifneq ($(DTB),)
60 core-y += $(boot)/
61endif
62
Michal Simek5f8ffb52009-03-27 14:25:51 +010063# defines filename extension depending memory management type
64ifeq ($(CONFIG_MMU),)
Sam Ravnborg950b2602009-07-24 09:04:49 +020065MMU := -nommu
Michal Simek5f8ffb52009-03-27 14:25:51 +010066endif
Sam Ravnborg950b2602009-07-24 09:04:49 +020067
Michal Simekf05131c2009-09-14 15:15:49 +020068export MMU DTB
Michal Simek5f8ffb52009-03-27 14:25:51 +010069
70all: linux.bin
71
Michal Simekf05131c2009-09-14 15:15:49 +020072BOOT_TARGETS = linux.bin linux.bin.gz simpleImage.%
73
Michal Simek5f8ffb52009-03-27 14:25:51 +010074archclean:
75 $(Q)$(MAKE) $(clean)=$(boot)
76
Michal Simekf05131c2009-09-14 15:15:49 +020077$(BOOT_TARGETS): vmlinux
Michal Simek5f8ffb52009-03-27 14:25:51 +010078 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
79
80define archhelp
Michal Simekf05131c2009-09-14 15:15:49 +020081 echo '* linux.bin - Create raw binary'
82 echo ' linux.bin.gz - Create compressed raw binary'
83 echo ' simpleImage.<dt> - ELF image with $(arch)/boot/dts/<dt>.dts linked in'
84 echo ' - stripped elf with fdt blob
85 echo ' simpleImage.<dt>.unstrip - full ELF image with fdt blob'
86 echo ' *_defconfig - Select default config from arch/microblaze/configs'
87 echo ''
88 echo ' Targets with <dt> embed a device tree blob inside the image'
89 echo ' These targets support board with firmware that does not'
90 echo ' support passing a device tree directly. Replace <dt> with the'
91 echo ' name of a dts file from the arch/microblaze/boot/dts/ directory'
92 echo ' (minus the .dts extension).'
Michal Simek5f8ffb52009-03-27 14:25:51 +010093endef