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 := $(shell echo $(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 $(CPU_VER) | cut -d '.' -f 3)
14 export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
16 # Use cpu-related CONFIG_ vars to set compile options.
17 # The various CONFIG_XILINX cpu features options are integers 0/1/2...
18 # rather than bools y/n
20 # Work out HW multipler support. This is icky.
21 # 1. Spartan2 has no HW multiplers.
22 # 2. MicroBlaze v3.x always uses them, except in Spartan 2
23 # 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
24 ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
26 CPUFLAGS-1 += -mno-xl-soft-mul
28 # USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
29 CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
30 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
33 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
34 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
35 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
37 CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
39 # r31 holds current when in kernel mode
40 KBUILD_KERNEL += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
45 LIBGCC := $(shell $(CC) $(KBUILD_KERNEL) -print-libgcc-file-name)
47 head-y := arch/microblaze/kernel/head.o
48 libs-y += arch/microblaze/lib/
50 core-y += arch/microblaze/kernel/
51 core-y += arch/microblaze/mm/
52 core-y += arch/microblaze/platform/
54 boot := arch/microblaze/boot
56 # defines filename extension depending memory management type
66 $(Q)$(MAKE) $(clean)=$(boot)
68 linux.bin linux.bin.gz: vmlinux
69 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
72 echo '* linux.bin - Create raw binary'
73 echo ' linux.bin.gz - Create compressed raw binary'