2 UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
4 UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
7 # What CPU vesion are we building for, and crack it open
9 CPU_VER=$(subst ",,$(CONFIG_XILINX_MICROBLAZE0_HW_VER) )
10 CPU_MAJOR=$(shell echo $(CPU_VER) | cut -d '.' -f 1)
11 CPU_MINOR=$(shell echo $(CPU_VER) | cut -d '.' -f 2)
12 CPU_REV=$(shell echo $(CPU_VER) | cut -d '.' -f 3)
14 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
16 # Use cpu-related CONFIG_ vars to set compile options.
18 # Work out HW multipler support. This is icky.
19 # 1. Spartan2 has no HW multiplers.
20 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
21 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
22 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
24 CPUFLAGS-1 += -mno-xl-soft-mul
26 # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
27 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
28 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
31 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
32 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
35 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
37 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
38 # rather than bools y/n
40 # r31 holds current when in kernel mode
41 CFLAGS_KERNEL += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
45 LDFLAGS_BLOB := --format binary --oformat elf32-microblaze
47 LIBGCC := $(shell $(CC) $(CFLAGS_KERNEL) -print-libgcc-file-name)
49 head-y := arch/microblaze/kernel/head.o
50 libs-y += arch/microblaze/lib/ $(LIBGCC)
51 core-y += arch/microblaze/kernel/ arch/microblaze/mm/ \
52 arch/microblaze/platform/
54 boot := arch/$(ARCH)/boot
56 # defines filename extension depending memory management type
65 $(Q)$(MAKE) $(clean)=$(boot)
67 linux.bin linux.bin.gz: vmlinux
68 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
71 echo '* linux.bin - Create raw binary'
72 echo ' linux.bin.gz - Create compressed raw binary'