143 lines
3.1 KiB
Makefile
143 lines
3.1 KiB
Makefile
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LOCAL_DIR := $(GET_LOCAL_DIR)
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# can override this in local.mk
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ENABLE_THUMB?=true
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DEFINES += \
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ARM_CPU_$(ARM_CPU)=1
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# do set some options based on the cpu core
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HANDLED_CORE := false
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ifeq ($(ARM_CPU),cortex-a8)
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DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv7=1 \
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ARM_WITH_VFP=1 \
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ARM_WITH_NEON=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_THUMB2=1 \
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ARM_WITH_CACHE=1 \
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ARM_WITH_L2=1
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CFLAGS += -mcpu=$(ARM_CPU)
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#CFLAGS += -mcpu=arm1136jf-s # compiler doesn't understand cortex yet
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HANDLED_CORE := true
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#CFLAGS += -mfpu=vfp -mfloat-abi=softfp
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endif
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ifeq ($(ARM_CPU),arm1136j-s)
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DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv6=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_CACHE=1 \
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ARM_CPU_ARM1136=1
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CFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),arm1176jzf-s)
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DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv6=1 \
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ARM_WITH_VFP=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_CACHE=1 \
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ARM_CPU_ARM1136=1
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CFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),arm926ej-s)
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DEFINES += \
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ARM_WITH_CP15=1 \
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ARM_WITH_MMU=1 \
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ARM_ISA_ARMv5E=1 \
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ARM_WITH_THUMB=1 \
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ARM_WITH_CACHE=1 \
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ARM_CPU_ARM9=1 \
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ARM_CPU_ARM926=1
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CFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifeq ($(ARM_CPU),arm7tdmi)
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DEFINES += \
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ARM_ISA_ARMv4=1 \
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ARM_WITH_THUMB=1 \
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ARM_CPU_ARM7=1
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CFLAGS += -mcpu=$(ARM_CPU)
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HANDLED_CORE := true
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endif
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ifneq ($(HANDLED_CORE),true)
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$(warning $(LOCAL_DIR)/rules.mk doesnt have logic for arm core $(ARM_CPU))
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$(warning this is likely to be broken)
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endif
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THUMBCFLAGS :=
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THUMBINTERWORK :=
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ifeq ($(ENABLE_THUMB),true)
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THUMBCFLAGS := -mthumb -D__thumb__
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THUMBINTERWORK := -mthumb-interwork
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endif
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INCLUDES += \
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-I$(LOCAL_DIR)/include
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BOOTOBJS += \
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$(LOCAL_DIR)/crt0.o
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OBJS += \
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$(LOCAL_DIR)/arch.Ao \
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$(LOCAL_DIR)/asm.o \
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$(LOCAL_DIR)/cache.o \
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$(LOCAL_DIR)/cache-ops.o \
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$(LOCAL_DIR)/ops.o \
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$(LOCAL_DIR)/exceptions.o \
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$(LOCAL_DIR)/faults.o \
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$(LOCAL_DIR)/mmu.o \
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$(LOCAL_DIR)/thread.o \
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$(LOCAL_DIR)/dcc.o
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# set the default toolchain to arm eabi and set a #define
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TOOLCHAIN_PREFIX ?= arm-eabi-
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ifeq ($(TOOLCHAIN_PREFIX),arm-none-linux-gnueabi-)
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# XXX test for EABI better than this
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# eabi compilers dont need this
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THUMBINTERWORK:=
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endif
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CFLAGS += $(THUMBINTERWORK)
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# make sure some bits were set up
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MEMVARS_SET := 0
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ifneq ($(MEMBASE),)
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MEMVARS_SET := 1
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endif
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ifneq ($(MEMSIZE),)
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MEMVARS_SET := 1
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endif
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ifeq ($(MEMVARS_SET),0)
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$(error missing MEMBASE or MEMSIZE variable, please set in target rules.mk)
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endif
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(CFLAGS) $(THUMBCFLAGS) -print-libgcc-file-name)
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#$(info LIBGCC = $(LIBGCC))
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += \
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$(BUILDDIR)/system-onesegment.ld \
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$(BUILDDIR)/system-twosegment.ld
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# rules for generating the linker scripts
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$(BUILDDIR)/system-onesegment.ld: $(LOCAL_DIR)/system-onesegment.ld
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@echo generating $@
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@$(MKDIR)
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$(NOECHO)sed "s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/" < $< > $@
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$(BUILDDIR)/system-twosegment.ld: $(LOCAL_DIR)/system-twosegment.ld
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@echo generating $@
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@$(MKDIR)
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$(NOECHO)sed "s/%ROMBASE%/$(ROMBASE)/;s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/" < $< > $@
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