68 lines
2.1 KiB
Makefile
68 lines
2.1 KiB
Makefile
UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
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# What CPU vesion are we building for, and crack it open
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# as major.minor.rev
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CPU_VER=$(subst ",,$(CONFIG_XILINX_MICROBLAZE0_HW_VER) )
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CPU_MAJOR=$(shell echo $(CPU_VER) | cut -d '.' -f 1)
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CPU_MINOR=$(shell echo $(CPU_VER) | cut -d '.' -f 2)
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CPU_REV=$(shell echo $(CPU_VER) | cut -d '.' -f 3)
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export CPU_VER CPU_MAJOR CPU_MINOR CPU_REV
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# Use cpu-related CONFIG_ vars to set compile options.
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# Work out HW multipler support. This is icky.
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# 1. Spartan2 has no HW multiplers.
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# 2. MicroBlaze v3.x always uses them, except in Spartan 2
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# 3. All other FPGa/CPU ver combos, we can trust the CONFIG_ settings
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ifeq (,$(findstring spartan2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
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ifeq ($(CPU_MAJOR),3)
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CPUFLAGS-1 += -mno-xl-soft-mul
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else
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# USE_HW_MUL can be 0, 1, or 2, defining a heirarchy of HW Mul support.
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CPUFLAGS-$(subst 1,,$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL)) += -mxl-multiply-high
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL) += -mno-xl-soft-mul
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endif
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endif
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
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CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
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CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER))
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# The various CONFIG_XILINX cpu features options are integers 0/1/2...
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# rather than bools y/n
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# r31 holds current when in kernel mode
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CFLAGS_KERNEL += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
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LDFLAGS_BLOB := --format binary --oformat elf32-microblaze
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LIBGCC := $(shell $(CC) $(CFLAGS_KERNEL) -print-libgcc-file-name)
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head-y := arch/microblaze/kernel/head.o
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libs-y += arch/microblaze/lib/ $(LIBGCC)
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core-y += arch/microblaze/kernel/ arch/microblaze/mm/ \
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arch/microblaze/platform/
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boot := arch/$(ARCH)/boot
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# defines filename extension depending memory management type
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ifeq ($(CONFIG_MMU),)
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MMUEXT := -nommu
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endif
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export MMUEXT
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all: linux.bin
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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linux.bin linux.bin.gz: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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define archhelp
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echo '* linux.bin - Create raw binary'
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echo ' linux.bin.gz - Create compressed raw binary'
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endef
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